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VTM48ET040M050B0R

型号：

VTM48ET040M050B0R

品牌：

VICOR[ VICOR CORPORATION ]

页数：

21 页

PDF大小：

1855 K

下载PDF手册
VTM™ Current Multiplier  
VTM48Ex040y050B0R  
S
C
NRTL US  
High Efficiency, Bi-directional, Sine Amplitude Converter™  
Features & Benefits  
Description  
The VI Chip® bi-directional current multiplier is a Sine Amplitude  
• 48VDC to 4VDC 50A bi-directional current multiplier  
Converter™ (SAC™) operating from a 26 to 55VDC primary  
source or a 2.2 to 4.6VDC secondary source to power a load. The  
bi-directional Sine Amplitude Converter isolates and transforms  
voltage at a secondary:primary ratio of 1/12. The SAC offers a  
low AC impedance beyond the bandwidth of most downstream  
regulators; therefore for a step-down conversion; capacitance  
normally at the load can be located at the source to the Sine  
Amplitude Converter to enable a reduction in size of capacitors.  
Since the K factor of the VTM48EF040T050B0R is 1/12, the  
capacitance value on the primary side can be reduced by a factor  
of 144 in an application where the source is located on the primary  
side, resulting in savings of board area, materials and total  
system cost.  
• Can power a load connected to either the primary or  
secondary side  
• High efficiency (>94%) reduces system power  
consumption  
• High density (170A/in3)  
• “Full Chip” VI Chip® package enables surface mount,  
low impedance interconnect to system board  
• Contains built-in protection features against:  
nꢀOvervoltage Lockout  
nꢀOvercurrent  
The VTM48EF040T050B0R is provided in a VI Chip package  
compatible with standard pick-and-place and surface mount  
assembly processes. The co-molded VI Chip package provides  
enhanced thermal management due to a large thermal interface  
area and superior thermal conductivity. The high conversion  
efficiency of the VTM48EF040T050B0R increases overall system  
efficiency and lowers operating costs compared to  
nꢀShort Circuit  
nꢀOvertemperature  
• Provides enable/disable control,  
internal temperature monitoring  
• ZVS/ZCS resonant Sine Amplitude Converter topology  
conventional approaches.  
• Less than 50ºC temperature rise at full load  
in typical applications  
The VTM48EF040T050B0R enables the utilization of Factorized  
Power Architecture™ which provides efficiency and size benefits  
by lowering conversion and distribution losses and promoting high  
density point of load conversion.  
Typical Applications  
• High End Computing Systems  
• Automated Test Equipment  
• High Density Power Supplies  
• Communications Systems  
Product Ratings  
VPRI = 26 – 55V  
ISEC = 50A (NOM)  
K = 1/12  
VSEC = 2.2 – 4.6V (no load)  
Part Numbering  
Typical Application  
Product Number  
Package Style  
Product Grade  
+IN  
+OUT  
F = J-Lead  
T = -40° to 125°C  
M = -55° to 125°C  
Enable  
VTM48Ex040y050B0R  
PRM A  
T = Through hole  
-IN  
-OUT  
+PRI  
-PRI  
+SEC  
-SEC  
For Storage and Operating Temperatures see General Characteristics Section  
VTM®  
Battery  
+IN  
+OUT  
-OUT  
Enable  
PRM B  
-IN  
VTM™ Current Multiplier  
Page 1 of 21  
Rev 1.3  
11/2016  
vicorpower.com  
800 927.9474  
VTM48Ex040y050B0R  
Absolute Maximum Ratings  
The absolute maximum ratings below are stress ratings only. Operation at or beyond these maximum ratings can cause permanent damage to the device.  
Parameter  
Comments  
Min  
Max  
Unit  
+PRI to –PRI  
-1.0  
60  
VDC  
PC to –PRI  
TM to –PRI  
-0.3  
20  
7
VDC  
VDC  
-0.3  
-0.3  
VC to –PRI  
20  
2250  
40  
VDC  
VDC  
VDC  
+PRI / –PRI to +SEC / –SEC (hipot)  
+SEC to –SEC  
-0.5  
Primary Source Electrical Specifications  
Specifications apply over all line and load conditions when power is sourced from the primary side, unless otherwise noted; Boldface specifications apply over  
the temperature range of -40°C < TJ < 125°C (T-Grade); All other specifications are at TJ = 25ºC unless otherwise noted.  
Attribute  
Symbol  
Conditions / Notes  
No external VC applied  
Min  
26  
0
Typ  
Max  
55  
55  
1
Unit  
Primary voltage range  
VPRI  
VDC  
VC applied  
VPRI slew rate  
dVPRI/dt  
VPRI_UV  
V/µs  
V
Module latched shutdown,  
No external VC applied, IOUT = 50A  
VPRI UV turn off  
24  
26  
VPRI = 48V  
1.5  
10  
12  
6.3  
8
VPRI = 26V to 55V  
No Load power dissipation  
Inrush current peak  
PNL  
W
A
VPRI = 48V, TC = 25ºC  
VPRI = 26V to 55V, TC = 25ºC  
4.7  
10  
VC enable, VPRI = 48V, CSEC = 9100µF,  
RLOAD = 78mΩ  
IINRP  
20  
DC input current  
IPRI_DC  
K
4.5  
A
V / V  
V
Transfer ratio  
K = VSEC/ VPRI, ISEC = 0A  
1/12  
Secondary voltage  
VSEC  
VSEC = VPRI • K –ISEC • RSEC, See Page 13  
Secondary current (average)  
Secondary current (peak)  
Secondary power (average)  
ISEC_AVG  
ISEC_PK  
POUT_AVG  
54  
75  
A
tPEAK < 10ms, IOUT_AVG ≤ 50A  
ISEC_AVG ≤ 50A  
A
248  
W
VPRI = 48V, ISEC = 50A  
VPRI = 26V to 55V, ISEC = 50A  
VPRI = 48V, ISEC = 25A  
93.1  
90.2  
92.4  
94.0  
93.5  
Efficiency (ambient)  
hAMB  
%
VTM™ Current Multiplier  
Page 2 of 21  
Rev 1.3  
11/2016  
vicorpower.com  
800 927.9474  
VTM48Ex040y050B0R  
Primary Source Electrical Specifications (Cont.)  
Specifications apply over all line and load conditions when power is sourced from the primary side, unless otherwise noted; Boldface specifications apply over  
the temperature range of -40°C < TJ < 125°C (T-Grade); All other specifications are at TJ = 25ºC unless otherwise noted.  
Attribute  
Efficiency (hot)  
Symbol  
hHOT  
Conditions / Notes  
VIN = 48V, TC = 100°C, ISEC = 50A  
10A < ISEC < 50A  
Min  
93.0  
80.0  
Typ  
Max  
Unit  
%
94.0  
Efficiency (over load range)  
h20%  
%
Secondary resistance (cold)  
Secondary resistance (ambient)  
Secondary resistance (hot)  
Switching frequency  
RSEC_COLD  
RSEC_AMB  
RSEC_HOT  
FSW  
TC = -40°C, ISEC = 50A  
TC = 25°C, ISEC = 50A  
TC = 100°C, ISEC = 50A  
1.5  
1.8  
2.0  
2.5  
2.6  
3.0  
mΩ  
mΩ  
2.0  
2.7  
3.3  
mΩ  
1.36  
2.72  
1.43  
2.86  
1.50  
3.00  
MHz  
MHz  
Secondary ripple frequency  
FSW_RP  
COUT = 0F, ISEC = 50A, VPRI = 48V,  
20MHz BW  
Secondary voltage ripple  
VSEC_PP  
216  
350  
mV  
Secondary inductance (parasitic)  
Secondary capacitance (internal)  
LSEC_PAR  
CSEC_INT  
Frequency up to 30MHz, Simulated J-lead model  
Effective Value at 4VSEC  
600  
200  
pH  
µF  
VTM Standalone Operation.  
VPRI pre-applied, VC enable  
Secondary capacitance (external)  
CSEC_EXT  
9100  
µF  
Protection  
Primary Overvoltage lockout  
VPRI_OVLO+  
tOVLO  
IOCP_SEC  
ISCP_SEC  
Module latched shutdown  
55.1  
58.5  
8
60.0  
100  
V
µs  
A
Primary Overvoltage lockout  
response time constant  
Effective internal RC filter  
Secondary overcurrent trip  
53  
78  
Secondary Short circuit protection  
trip current  
100  
A
Secondary overcurrent  
response time constant  
tOCP_SEC  
Effective internal RC filter (Integrative)  
6.2  
ms  
Secondary Short circuit  
protection response time  
From detection to cessation  
of switching (Instantaneous)  
tSCP_SEC  
TJ_OTP  
1
µs  
ºC  
Thermal shutdown setpoint  
125  
130  
135  
Reverse inrush current protection  
Reverse Inrush protection is enabled for this product  
VTM™ Current Multiplier  
Page 3 of 21  
Rev 1.3  
11/2016  
vicorpower.com  
800 927.9474  
VTM48Ex040y050B0R  
Secondary Source Electrical Specifications  
Specifications apply over all line and load conditions when power is sourced from the secondary side, unless otherwise noted; Boldface specifications apply  
over the temperature range of -40°C < TJ < 125°C (T-Grade); All other specifications are at TJ = 25ºC unless otherwise noted.  
Attribute  
Symbol  
Conditions / Notes  
No external VC applied  
Min  
2.17  
0
Typ  
Max  
4.58  
5
Unit  
Secondary voltage range  
VSEC  
VDC  
VC applied  
VSEC slew rate  
dVSEC/dt  
VSEC_UV  
1
V/µs  
V
Module latched shutdown,  
No external VC applied, IPRI = 4.2A  
VSEC UV turn off  
2.0  
2.2  
VSEC = 4V  
1.5  
10.0  
12.0  
6.3  
VSEC = 2.17V to 4.58V  
VSEC = 4V, TC = 25ºC  
VSEC = 2.17V to 4.58V, TC = 25ºC  
No Load power dissipation  
PNL_SEC  
W
4.7  
8.0  
VC enable, VSEC = 4V, CPRI = 63µF,  
RLOAD = 11Ω  
Inrush current peak  
IIN_SEC_P  
120  
240  
A
DC secondary current  
Primary voltage  
ISEC_DC  
VPRI  
IPRI_AVG  
IPRI_PK  
54.0  
A
V
VPRI = VSEC /K –IPRI • RPRI, See Page 13  
Primary current (average)  
Primary current (peak)  
Primary power (average)  
4.2  
6.3  
230  
A
tPEAK < 10ms, IPRI_AVG ≤ 4.2A  
IPRI_AVG ≤ 4.2A  
A
PPRI_AVG  
W
VSEC = 4V, IPRI = 4.2A  
93.1  
90.2  
92.4  
93.0  
80.0  
380  
94.0  
Efficiency (ambient)  
hAMB  
VSEC = 2.17V to 4.58V, IPRI = 4.2A  
VSEC = 4V, IPRI = 2.1A  
%
93.5  
94.0  
Efficiency (hot)  
hHOT  
h20%  
VSEC = 4V, TC = 100°C, IPRI = 4.2A  
0.8A < IPRI < 4.2A  
%
%
Efficiency (over load range)  
Primary resistance (cold)  
Primary resistance (ambient)  
Primary resistance (hot)  
RPRI_COLD  
RPRI_AMB  
RPRI_HOT  
TC = -40°C, IPRI = 4.2A  
TC = 25°C,IPRI = 4.2A  
420  
473  
521  
460  
545  
560  
mΩ  
mΩ  
mΩ  
430  
TC = 100°C, IPRI = 4.2A  
480  
CPRI = 0F, IPRI = 4.2A, VSEC = 4V,  
2.2MHz BW  
Primary voltage ripple  
VPRI_PP  
600  
mV  
µF  
VTM Standalone Operation.  
VSEC pre-applied, VC enable  
Primary capacitance (external)  
CPRI_EXT  
63  
Protection  
Secondary OVLO  
VSEC_OVLO+  
tOVLO_SEC  
IOCP_PRI  
Module latched shutdown  
4.6  
4.9  
8
5.0  
V
µs  
A
Secondary Overvoltage lockout  
response time constant  
Effective internal RC filter  
Primary overcurrent trip  
4
6
8
Primary Short circuit protection  
trip current  
ISCP_PRI  
8
A
Primary overcurrent  
response time constant  
tOCP_PRI  
tSCP_PRI  
Effective internal RC filter (Integrative)  
6.2  
1
ms  
µs  
Primary Short circuit protection  
response time  
From detection to cessation  
of switching (Instantaneous)  
VTM™ Current Multiplier  
Page 4 of 21  
Rev 1.3  
11/2016  
vicorpower.com  
800 927.9474  
VTM48Ex040y050B0R  
Signal Characteristics  
Specifications apply over all line and load conditions when power is sourced from the primary side, unless otherwise noted; Boldface specifications apply over  
the temperature range of -40°C < TJ < 125°C (T-Grade); All other specifications are at TJ = 25ºC unless otherwise noted.  
VTM CONTROL : VC  
•
•
•
•
•
•
•
Referenced to -PRI.  
Used to wake up powertrain circuit.  
A minimum of 11.5V must be applied indefinitely for VPRI < 26V to ensure normal operation.  
VC slew rate must be within range for a succesful start.  
PRM™ VC can be used as valid wake-up signal source.  
Internal Resistance used in “Adaptive Loop” compensation.  
VC voltage may be continuously applied.  
SIGNAL TYPE  
STATE  
ATTRIBUTE  
SYMBOL  
CONDITIONS / NOTES  
MIN  
11.5  
TYP MAX UNIT  
Required for start up, and operation  
below 26V.  
External VC voltage  
VVC_EXT  
16.5  
150  
V
VC = 11.5V, VPRI = 0V  
VC = 11.5V, VPRI > 26V  
VC = 16.5V, VPRI > 26V  
Fault mode. VC > 11.5V  
66  
15  
83  
75  
100  
1
VC current draw  
IVC  
mA  
Steady  
VC internal diode rating  
VC internal resistor  
DVC_INT  
RVC-INT  
V
kΩ  
ANALOG  
INPUT  
VC internal resistor  
temperature coefficient  
TVC_COEFF  
900 ppm/°C  
VC start up pulse  
VC slew rate  
VVC_SP  
dVC/dt  
IINR_VC  
tPEAK <18ms  
20  
0.25  
1
V
V/µs  
A
Start Up  
Required for proper start up  
VC = 16.5V, dVC/dt = 0.25V/µs  
0.02  
VC inrush current  
VPRI pre-applied, PC floating,  
VC enable, CPC = 0µF  
VC to VSEC turn-on delay  
tON  
500  
µs  
VC = 11.5V to PC high, VPRI = 0V,  
dVC/dt = 0.25V/µs  
Transitional  
VC to PC delay  
tVC_PC  
75  
125  
µs  
µF  
Internal VC capacitance  
CVC_INT  
VC = 0V  
3.2  
VTM™ Current Multiplier  
Page 5 of 21  
Rev 1.3  
11/2016  
vicorpower.com  
800 927.9474  
VTM48Ex040y050B0R  
Signal Characteristics (Cont.)  
Specifications apply over all line and load conditions when power is sourced from the primary side, unless otherwise noted; Boldface specifications apply over  
the temperature range of -40°C < TJ < 125°C (T-Grade); All other specifications are at TJ = 25ºC unless otherwise noted.  
PRIMARY CONTROL : PC  
•
•
•
•
•
•
•
Referenced to -PRI.  
The PC pin enables and disables the VTM. When held below 2V, the VTM will be disabled.  
PC pin outputs 5V during normal operation. PC pin is equal to 2.5V during fault mode given VPRI > 26V or VC > 11.5V.  
After successful start up and under no fault condition, PC can be used as a 5 V regulated voltage source with a 2mA maximum current.  
Module will shutdown when pulled low with an impedance less than 400Ω.  
In an array of VTMs, connect PC pin to synchronize start up.  
PC pin cannot sink current and will not disable other modules during fault mode.  
SIGNAL TYPE  
STATE  
ATTRIBUTE  
PC voltage  
SYMBOL  
CONDITIONS / NOTES  
MIN TYP MAX UNIT  
VPC  
IPC_OP  
RPC_OP  
IPC_EN  
4.7  
5.0  
5.3  
2
V
Steady  
PC source current  
mA  
kΩ  
µA  
pF  
kΩ  
V
PC resistance (internal)  
PC source current  
Internal pull down resistor  
50  
50  
150  
100  
400  
300  
1000  
ANALOG  
OUTPUT  
Start Up  
PC capacitance (internal)  
PC resistance (external)  
PC voltage  
CPC_INT  
RPC_S  
60  
2
Enable  
Disable  
VPC_EN  
VPC_DIS  
IPC_PD  
2.5  
3
2
PC voltage (disable)  
PC pull down current  
PC disable time  
V
DIGITAL  
INPUT/  
OUTPUT  
5.1  
mA  
µs  
tPC_DIS_T  
tFR_PC  
5
Transitional  
PC fault response time  
From fault to PC = 2V  
100  
µs  
Temperature Monitor : TM  
•
•
•
•
•
Referenced to -PRI.  
The TM pin monitors the internal temperature of the VTM controller IC within an accuracy of 5°C.  
Can be used as a “Power Good” flag to verify that the VTM is operating.  
The TM pin has a room temperature setpoint of 3V and approximate gain of 10mV/°C.  
Output drives Temperature Shutdown comparator.  
SIGNAL TYPE  
STATE  
ATTRIBUTE  
TM voltage  
SYMBOL  
CONDITIONS / NOTES  
TJ controller = 27°C  
MIN TYP MAX UNIT  
VTM_aMB  
ITM  
2.95 3.00 3.05  
V
µA  
mV/ºC  
mV  
V
TM source current  
TM gain  
100  
ANALOG  
OUTPUT  
Steady  
Disable  
ATM  
10  
TM voltage ripple  
TM voltage  
VTM_PP  
VTM_DIS  
RTM_INT  
CTM_EXT  
tFR_TM  
CTM = 0F, VPRI = 48V, ISEC = 50A  
Internal pull down resistor  
From fault to TM = 1.5V  
120  
0
200  
DIGITAL  
OUTPUT  
(FAULT FLAG)  
TM resistance (internal)  
25  
40  
50  
50  
kΩ  
pF  
Transitional TM capacitance (external)  
TM fault response time  
10  
µs  
VTM™ Current Multiplier  
Page 6 of 21  
Rev 1.3  
11/2016  
vicorpower.com  
800 927.9474  
VTM48Ex040y050B0R  
Timing Diagram (Power sourced from the primary side)  
6
7
ISEC  
ISEC  
ISEC  
8
d
1
2
3
4
5
VC  
b
VVC-EXT  
a
VOVLO  
VPRI  
NL  
≥ 26V  
c
e
f
VSEC  
TM  
VTM-AMB  
PC  
g
5V  
3V  
a: VC slew rate (dVC/dt)  
b: Minimum VC pulse rate  
c: tOVLO_PIN  
1. Initiated VC pulse  
2. Controller start  
3. VPRI ramp up  
Notes:  
– Timing and voltage is not to scale  
– Error pulse width is load dependent  
d: tOCP_SEC  
e: Secondary turn on delay (tON  
f: PC disable time (tPC_DIS_T  
g: VC to PC delay (tVC_PC  
4. VPRI = VOVLO  
)
5. VPRI ramp down no VC pulse  
6. Overcurrent, Secondary  
7. Start up on short circuit  
8. PC driven low  
)
)
VTM™ Current Multiplier  
Page 7 of 21  
Rev 1.3  
11/2016  
vicorpower.com  
800 927.9474  
VTM48Ex040y050B0R  
Application Characteristics  
The following values, typical of an application environment, are collected at TC = 25ºC with power sourced from the primary side unless otherwise noted.  
See associated figures for general trend data.  
ATTRIBUTE  
SYMBOL  
CONDITIONS / NOTES  
VPRI = 48V, PC enabled  
TYP  
UNIT  
No load power dissipation  
Efficiency (ambient)  
PNL  
4.7  
94.3  
94.2  
2.4  
W
%
hAMB  
VPRI = 48V, ISEC = 50A  
Efficiency (hot)  
hHOT  
VPRI = 48V, ISEC = 50A, TC = 100ºC  
VPRI = 48V, ISEC = 50A, TC = -40ºC  
VPRI = 48V, ISEC = 50A  
%
Secondary resistance (cold)  
Secondary resistance (ambient)  
Secondary resistance (hot)  
Secondary voltage ripple  
VOUT transient (positive)  
VOUT transient (negative)  
RSEC_COLD  
RSEC_AMB  
RSEC_HOT  
VSEC_PP  
mΩ  
mΩ  
mΩ  
mV  
mV  
mV  
2.8  
VPRI = 48V, ISEC = 50A, TC = 100ºC  
3.2  
CSEC = 0F,  
= 50A,  
= 48V, 20MHz BW  
ISEC  
VPRI  
320  
750  
750  
VSEC_TRAN+  
VSEC_TRAN-  
ISEC_STEP = 0A to 50A, VPRI = 48V, ISLEW = 17A/µs  
ISEC_STEP = 50A to 0A,  
= 48V, ISLEW =  
0A/µs  
VPRI  
11  
10  
9
98  
96  
94  
8
7
6
5
4
3
2
92  
1
26  
29  
32  
35  
Primary Voltage (V)  
-40°C 25°C  
38  
41  
43  
46  
49  
52  
55  
-40  
-20  
0
20  
Case Temperature (C)  
26V 48V  
40  
60  
80  
100  
VPRI  
:
55V  
TCASE  
:
100°C  
Figure 1 — No load power dissipation vs. VPRI  
Figure 2 — Full secondary load efficiency vs. temperature  
35  
30  
25  
20  
15  
10  
5
92  
87  
82  
77  
72  
67  
62  
57  
52  
0
0
5
10  
15  
20  
25  
30  
35  
40  
45  
50  
0
5
10  
15  
20  
25  
30  
35  
40  
45  
50  
Secondary Load Current (A)  
Secondary Load Current (A)  
26V  
48V  
55V  
VPRI  
:
26V  
48V  
55V  
VPRI  
:
Figure 3 — Efficiency at –40°C  
Figure 4 — Power dissipation at –40°C  
VTM™ Current Multiplier  
Page 8 of 21  
Rev 1.3  
11/2016  
vicorpower.com  
800 927.9474  
VTM48Ex040y050B0R  
98  
94  
90  
86  
82  
78  
24  
20  
16  
12  
8
4
0
74  
70  
0
5
10  
15  
20  
25  
30  
35  
40  
45  
50  
0
5
10  
15  
20  
25  
30  
35  
40  
45  
50  
Secondary Load Current (A)  
Secondary Load Current (A)  
26V  
48V  
55V  
VPRI  
:
26V  
48V  
55V  
VPRI  
:
Figure 5 — Efficiency at 25°C  
Figure 6 — Power dissipation at 25°C  
28  
24  
20  
16  
12  
8
96  
92  
88  
84  
80  
76  
72  
4
0
0
5
10  
15  
20  
25  
30  
35  
40  
45  
50  
0
5
10  
15  
20  
25  
30  
35  
40  
45  
50  
Secondary Load Current (A)  
Secondary Load Current (A)  
26V  
48V  
55V  
VPRI  
:
26V  
48V  
55V  
VPRI  
:
Figure 7 — Efficiency at 100°C  
Figure 8 — Power dissipation at 100°C  
4.0  
3.0  
2.0  
1.0  
0.0  
350  
300  
250  
200  
150  
100  
50  
-40  
-20  
0
20  
40  
60  
80  
100  
0
5
10  
15  
20  
25  
30  
35  
40  
45  
50  
Case Temperature (C)  
Secondary Load Current (A)  
VPRI  
:
Full Load  
26V  
48V  
55V  
Figure 9 — RSEC vs. temperature  
Figure 10 — VRIPPLE vs. ISEC ; No external CSEC Board mounted  
.
module, scope setting: 20MHz analog BW  
VTM™ Current Multiplier  
Page 9 of 21  
Rev 1.3  
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10ms Max  
80  
70  
60  
50  
40  
30  
20  
10  
0
Continuous  
0
1
2
3
4
5
Secondary Voltage (V)  
Figure 11 — Safe operating area  
Figure 12 — Full load ripple, 100µF CPRI; No external CSEC Board  
.
mounted module, scope setting: 20MHz analog BW  
Figure 13 — Start up from application of VPRI  
;
Figure 14 — Start up from application of VC;  
VC pre-applied CSEC = 9100µF  
VPRI pre-applied CSEC = 9100µF  
Figure 15 — 0A – Full load transient response:  
Figure 16 — Full load – 0A transient response:  
CPRI = 100µF, no external CSEC  
CPRI = 100µF, no external CSEC  
VTM™ Current Multiplier  
Page 10 of 21  
Rev 1.3  
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VTM48Ex040y050B0R  
General Characteristics  
Specifications apply over all line and load conditions with power sourced from primary side unless otherwise noted; Boldface specifications apply over the  
temperature range of -40ºC < TJ < 125ºC (T-Grade); All Other specifications are at TJ = 25°C unless otherwise noted.  
Attribute  
Symbol  
Conditions / Notes  
Mechanical  
Min  
Typ  
Max  
Unit  
Length  
Width  
L
W
H
32.25 / [1.270] 32.5 / [1.280] 32.75 / [1.289]  
21.75 / [0.856] 22.0 / [0.866] 22.25 / [0.876]  
mm/[in]  
mm/[in]  
mm/[in]  
cm3/[in3]  
g/[oz]  
Height  
Volume  
Weight  
6.48 / [0.255]  
6.73 / [0.265]  
4.81 / [0.294]  
15.0 / [0.53]  
6.98 / [0.275]  
Vol  
W
No heat sink  
Nickel  
0.51  
0.02  
2.03  
0.15  
Lead Finish  
Palladium  
Gold  
µm  
0.003  
0.051  
Thermal  
VTM48EF040T050B0R (T-Grade)  
VTM48EF040M050B0R (M-Grade)  
VTM48ET040T050B0R (T-Grade)  
VTM48ET040M050B0R (M-Grade)  
-40  
-55  
-40  
-55  
125  
125  
125  
125  
Operating temperature  
TJ  
°C  
Isothermal heat sink and  
isothermal internal PCB  
hJC  
Thermal resistance  
Thermal capacity  
1
5
°C/W  
Ws/°C  
Assembly  
6
lbs  
Peak compressive force  
applied to case (Z-axis)  
Supported by J-lead only  
5.41  
125  
125  
125  
125  
lbs/in2  
VTM48EF040T050B0R (T-Grade)  
VTM48EF040M050B0R (M-Grade)  
VTM48ET040T050B0R (T-Grade)  
VTM48ET040M050B0R (M-Grade)  
-40  
-65  
-40  
-65  
Storage temperature  
ESD withstand  
TST  
°C  
Human Body Model,  
“JEDEC JESD 22-A114-F”  
ESDHBM  
ESDCDM  
1000  
400  
VDC  
Charge Device Model,  
“JEDEC JESD 22-C101-D”  
Soldering  
Peak temperature during reflow  
Peak time above 217°C  
MSL 4 (Datecode 1528 and later)  
245  
90  
3
°C  
s
60  
1.5  
1.5  
Peak heating rate during reflow  
Peak cooling rate post reflow  
°C/s  
°C/s  
6
VTM™ Current Multiplier  
Page 11 of 21  
Rev 1.3  
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VTM48Ex040y050B0R  
General Characteristics (Cont.)  
Specifications apply over all line and load conditions with power sourced from primary side unless otherwise noted; Boldface specifications apply over the  
temperature range of -40ºC < TJ < 125ºC (T-Grade); All Other specifications are at TJ = 25°C unless otherwise noted.  
Attribute  
Symbol  
Conditions / Notes  
Safety  
Min  
Typ  
Max  
3800  
Unit  
Isolation voltage (hipot)  
Isolation capacitance  
Isolation resistance  
VHIPOT  
CPRI_SEC  
RPRI_SEC  
2250  
2500  
10  
VDC  
pF  
Unpowered unit  
3200  
MΩ  
MIL-HDBK-217 Plus Parts Count;  
25ºC Ground Benign, Stationary,  
Indoors / Computer Profile  
3.8  
5.7  
MHrs  
MHrs  
MTBF  
Telcordia Issue 2 - Method I Case 1;  
Ground Benign, Controlled  
cTUVus  
cURus  
Agency approvals / standards  
CE Marked for Low Voltage Directive and ROHS Recast Directive, as applicable  
VTM™ Current Multiplier  
Page 12 of 21  
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nꢀFault detection flag: The TM voltage source is internally  
turned off as soon as a fault is detected. For system  
monitoring purposes (microcontroller interface) faults are  
detected on falling edges of TM signal.  
Using the Control Signals VC, PC, TM, IM  
The VTM Control (VC) pin is a primary referenced pin which  
powers the internal VCC circuitry when within the specified voltage  
range of 11.5V to 16.5V. This voltage is required for VTM current  
multiplier start up and must be applied as long as the primary is  
below 26V. In order to ensure a proper start, the slew rate of the  
applied voltage must be within the specified range.  
Start Up Behavior  
Depending on the sequencing of the VC voltage with respect  
to the same voltage, whether the source is on the primary or  
secondary, the behavior during start up will vary as follows:  
Some additional notes on the using the VC pin:  
nꢀIn most applications, the VTM module primary side will be  
powered by an upstream PRM™ regulator which provides a  
10ms VC pulse during start up. In these applications the VC  
pins of the PRM regulator and VTM current multiplier should  
be tied together.  
nꢀNormal operation (VC applied prior to the source voltage):  
In this case, the controller is active prior to the source  
ramping. When the source voltage is applied, the VTM  
module load voltage will track the source (See Figure 13).  
The inrush current is determined by the source voltage rate  
of rise and load capacitance. If the VC voltage is removed  
prior to the primary voltage reaching 26V, the VTM may  
shut down.  
nꢀIn bi-directional applications, the primary of the VTM may  
also be providing power to a PRM input. In these  
applications, a proper VC voltage within the specified range  
must be applied any time the primary voltage of the VTM is  
below 26V.  
nꢀStand-alone operation (VC applied after VPRI): In this case the  
VTM secondary will begin to rise upon the application of the  
VC voltage (See Figure 14). The Adaptive Soft Start Circuit may  
vary the secondary voltage rate of rise in order to limit the inrush  
current to its maximum level. When starting into high  
capacitance, or a short, the secondary current will be limited for  
a maximum of 1200µs. After this period, the Adaptive Soft Start  
Circuit will time out and the VTM module may shut down. No  
restart will be attempted until VC is re-applied or PC is toggled.  
The maximum secondary capacitance is limited to 9100µF in this  
mode of operation to ensure a successful start.  
nꢀThe VC voltage can be applied indefinitely allowing for  
continuous operation down to 0VPRI  
.
nꢀThe fault response of the VTM module is latching. A positive  
edge on VC is required in order to restart the unit. If VC is  
continuously applied the PC pin may be toggled to restart  
the VTM module.  
Primary Control (PC) is a primary referenced pin that can be used  
to accomplish the following functions:  
nꢀDelayed start: Upon the application of VC, the PC pin will  
source a constant 100µA current to the internal RC  
network. Adding an external capacitor will allow further  
delay in reaching the 2.5V threshold for module start.  
Thermal Considerations  
VI Chip® products are multi-chip modules whose temperature  
distribution varies greatly for each part number as well as with  
the line/load conditions, thermal management and environmental  
conditions. Maintaining the top of the VTM48EF040T050B0R case  
to less than 100ºC will keep all junctions within the VI Chip module  
below 125ºC for most applications.  
nꢀAuxiliary voltage source: Once enabled in regular  
operational conditions (no fault), each VTM PC provides a  
regulated 5V, 2mA voltage source.  
nꢀDisable: PC pin can be actively pulled down in order  
to disable the module. Pull down impedance shall be lower  
than 400Ω.  
The percent of total heat dissipated through the top surface  
versus through the J-lead is entirely dependent on the particular  
mechanical and thermal environment. The heat dissipated through  
the top surface is typically 60%. The heat dissipated through the  
J-lead onto the PCB board surface is typically 40%. Use 100% top  
surface dissipation when designing for a conservative  
cooling solution.  
nꢀFault detection flag: The PC 5V voltage source is internally  
turned off as soon as a fault is detected. It is important to  
notice that PC doesn’t have current sink capability. Therefore,  
in an array, PC line will not be capable of disabling  
neighboring modules if a fault is detected.  
nꢀFault reset: PC may be toggled to restart the unit if VC  
It is not recommended to use a VI Chip module for an extended  
period of time at full load without proper heat sinking.  
is continuously applied.  
Temperature Monitor (TM) is a primary referenced pin that  
provides a voltage proportional to the absolute temperature of the  
converter control IC.  
It can be used to accomplish the following functions:  
nꢀMonitor the control IC temperature: The temperature in  
Kelvin is equal to the voltage on the TM pin scaled  
by 100. (i.e. 3.0V = 300K = 27ºC). If a heat sink is applied,  
TM can be used to thermally protect the system.  
VTM™ Current Multiplier  
Page 13 of 21  
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Sine Amplitude Converter™ Point of Load Conversion  
The Sine Amplitude Converter (SAC) uses a high frequency  
resonant tank to move energy from primary to secondary or vice-  
versa, depending on where the source is located. The resonant  
tank is formed by Cr and leakage inductance Lr in the power  
transformer windings. The resonant LC tank, operated at high  
frequency, is amplitude modulated as a function of primary voltage  
and secondary current. A small amount of capacitance embedded  
in the primary and secondary stages of the module is sufficient for  
full functionality and is key to achieving power density.  
The VTM48EF040T050B0R SAC can be simplified into the  
following model:  
973pH  
ISEC
RSEC  
LPRI = 5.7nH  
LSEC = 600pH  
2.5mΩ  
+
+
R
CSEC  
R
CPRI  
3.13Ω  
1/12 • VPRI  
430µΩ  
V•I  
K
0.57mΩ  
1/12 • ISEC  
+
–
C
PRI  
2µF  
CSEC  
200µF  
+
–
VSEC  
V
Iq  
PRI  
98mA  
–
–
Figure 17 — VI Chip® module AC model  
At no load:  
The use of DC voltage transformation provides additional  
interesting attributes. Assuming that RSEC = 0Ω and IQ = 0A, Eq. (3)  
now becomes Eq. (1) and is essentially load independent, resistor R  
is now placed in series with VPRI as shown in Figure 18.  
VSEC = VPRI • K  
(1)  
K represents the “turns ratio” of the SAC.  
Rearranging Eq (1):  
VSEC  
K =  
(2)  
R
VPRI  
SAC™  
K = 1/12  
VSEC  
+
–
VPRI  
In the presence of load, VSEC is represented by:  
VSEC = VPRI • K – ISEC • RSEC  
and ISEC is represented by:  
IPRI – IQ  
(3)  
Figure 18 — K = 1/12 Sine Amplitude Converter™  
with series primary resistor  
ISEC  
=
(4)  
K
The relationship between VPRI and Vsec becomes:  
RSEC represents the impedance of the SAC, and is a function of  
VSEC = (VPRI – IPRI • RSEC) • K  
(5)  
the RDSON of the primary and secondary MOSFETs and the winding  
resistance of the power transformer. IQ represents the quiescent  
current of the SAC control and gate drive circuitry. For applications  
where the source is located on the secondary side, equations 1 to  
Substituting the simplified version of Eq. (4)  
(IQ is assumed = 0A) into Eq. (5) yields:  
4 can be re-arranged to represent VPRI and IPRI as a function of VSEC  
and ISEC  
2
.
VSEC = VPRI • K – ISEC • RSEC • K  
(6)  
VTM™ Current Multiplier  
Page 14 of 21  
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This is similar in form to Eq. (3), where RSEC is used to represent the  
characteristic impedance of the SAC™. However, in this case a real  
R on the primary side of the SAC is effectively scaled by K2 with  
respect to the secondary.  
Low impedance is a key requirement for powering a high-  
current, low voltage load efficiently. A switching regulation stage  
should have minimal impedance while simultaneously providing  
appropriate filtering for any switched current. The use of a SAC  
between the regulation stage and the point of load provides a  
dual benefit of scaling down series impedance leading back to  
the source and scaling up shunt capacitance or energy storage  
as a function of its K factor squared. However, the benefits are  
not useful if the series impedance of the SAC is too high. The  
impedance of the SAC must be low, i.e. well beyond the crossover  
frequency of the system.  
Assuming that R = 1Ω, the effective R as seen from the secondary  
side is 6.9mΩ, with K = 1/12 as shown in Figure 18.  
A similar exercise should be performed with the additon of a  
capacitor or shunt impedance at the primary to the SAC. A switch  
in series with VIN is added to the circuit. This is depicted in  
Figure 19.  
A solution for keeping the impedance of the SAC low involves  
switching at a high frequency. This enables small magnetic  
components because magnetizing currents remain low. Small  
magnetics mean small path lengths for turns. Use of low loss core  
material at high frequencies also reduces core losses.  
S
SAC™  
V
+
–
K = 1/12  
SEC  
C
V
PRI  
The two main terms of power loss in the VTM module are:  
nꢀNo load power dissipation (PNL): defined as the power used to  
power up the module with an enabled powertrain at no load.  
nꢀResistive loss (RSEC): refers to the power loss across the VTM  
modeled as pure resistive impedance.  
Figure 19 — Sine Amplitude Converter™ with primary capacitor  
A change in VPRI with the switch closed would result in a change in  
capacitor current according to the following equation:  
PDISSIPATED = PNL + PRSEC  
Therefore,  
PSEC = PPRI –PDISSIPATED = PPRI – PNL – PRSEC  
(10)  
dVPRI  
IC(t) = C  
(7)  
dt  
(11)  
Assume that with the capacitor charged to VPRI, the switch is  
opened and the capacitor is discharged through the idealized SAC.  
In this case,  
The above relations can be combined to estimate the overall  
module efficiency:  
PPRI – PNL – PRSEC  
PPRI  
PSEC  
PPRI  
η =  
=
(12)  
IC = ISEC • K  
(8)  
2
Substituting Eq. (1) and (8) into Eq. (7) reveals:  
VPRI • IPRI – PNL – (ISEC  
)
• RSEC  
=
VPRI • IPRI  
dVSEC  
dt  
C
ISEC  
=
(9)  
•
2
K
2
PNL + (ISEC  
)
• RSEC  
= 1 –  
(
)
VPRI • IPRI  
The equation in terms of the secondary has yielded a K2 scaling  
factor for C, specified in the denominator of the equation.  
A K factor less than unity, results in an effectively larger  
capacitance on the secondary when expressed in terms of the  
primary. With a K = 1/12 as shown in Figure 19, C = 1µF would  
appear as C = 144µF when viewed from the secondary. Note that  
in situations where the souce voltage is located on the secondary  
side, the effect is reversed and effective valve of capacitance  
located on the secondary side is divided by a factor of 1/K2 when  
reflected to the primary.  
VTM™ Current Multiplier  
Page 15 of 21  
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Primary and Secondary Filter Design  
Capacitive Filtering Considerations  
for a Sine Amplitude Converter™  
A major advantage of a SAC™ system versus a conventional PWM  
converter is that the former does not require large functional  
filters. The resonant LC tank, operated at extreme high frequency,  
is amplitude modulated as a function of primary voltage and  
secondary current and efficiently transfers charge through the  
isolation transformer. A small amount of capacitance embedded in  
the primary and secondary stages of the module is sufficient for full  
functionality and is key to achieving high power density.  
It is important to consider the impact of adding input and output  
capacitance to a Sine Amplitude Converter on the system as a  
whole. Both the capacitance value and the effective impedance of  
the capacitor must be considered.  
A Sine Amplitude Converter has a DC ROUT value which has already  
been discussed in Page 13. The AC ROUT of the SAC contains  
several terms:  
This paradigm shift requires system design to carefully evaluate  
external filters in order to:  
nꢀResonant tank impedance  
nꢀInput lead inductance and internal capacitance  
nꢀOutput lead inductance and internal capacitance  
nꢀGuarantee low source impedance.  
To take full advantage of the VTM module dynamic response,  
the impedance presented to its input terminals must be low  
from DC to approximately 5MHz. Input capacitance may be  
added to improve transient performance or compensate for high  
source impedance.  
The values of these terms are shown in the behavioral model in  
Page 13. It is important to note on which side of the transformer  
these impedances appear and how they reflect across the  
transformer given the K factor.  
nꢀFurther reduce input and/or output voltage ripple without  
sacrificing dynamic response.  
Given the wide bandwidth of the VTM module, the source  
response is generally the limiting factor in the overall system  
response. Anomalies in the response of the source will appear at  
the output of the VTM module multiplied by its K factor.  
The overall AC impedance varies from model to model. For most  
models it is dominated by DC ROUT value from DC to beyond  
500KHz. The behavioral model in Page 13 should be used to  
approximate the AC impedance of the specific model.  
Any capacitors placed at the output of the VTM module reflect  
back to the input of the module by the square of the K factor  
(Eq. 9) with the impedance of the module appearing in series. It is  
very important to keep this in mind when using a PRM™ regulator  
to power the VTM module. Most PRM modules have a limit on  
the maximum amount of capacitance that can be applied to the  
output. This capacitance includes both the PRM output capacitance  
and the VTM module output capacitance reflected back to the  
input. In PRM module remote sense applications, it is important to  
consider the reflected value of VTM module output capacitance  
when designing and compensating the PRM module control loop.  
nꢀProtect the module from overvoltage transients imposed  
by the system that would exceed maximum ratings and  
cause failures.  
The VI Chip® module input/output voltage ranges must not  
be exceeded. An internal overvoltage lockout function prevents  
operation outside of the normal operating input range. Even  
during this condition, the powertrain is exposed to the applied  
voltage and power MOSFETs must withstand it.  
Capacitance placed at the input of the VTM module appear to  
the load reflected by the K factor with the impedance of the VTM  
module in series. In step-down ratios, the effective capacitance  
is increased by the K factor. The effective ESR of the capacitor is  
decreased by the square of the K factor, but the impedance of the  
module appears in series. Still, in most step-down VTM modules  
an electrolytic capacitor placed at the input of the module will have  
a lower effective impedance compared to an electrolytic capacitor  
placed at the output. This is important to consider when placing  
capacitors at the output of the module. Even though the capacitor  
may be placed at the output, the majority of the AC current will be  
sourced from the lower impedance, which in most cases will be the  
module. This should be studied carefully in any system design using  
a module. In most cases, it should be clear that electrolytic output  
capacitors are not necessary to design a stable,  
well-bypassed system.  
VTM™ Current Multiplier  
Page 16 of 21  
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Current Sharing  
Fuse Selection  
The SAC™ topology bases its performance on efficient transfer  
of energy through a transformer without the need of closed  
loop control. For this reason, the transfer characteristic can be  
approximated by an ideal transformer with some resistive drop and  
positive temperature coefficient.  
In order to provide flexibility in configuring power systems  
VI Chip® products are not internally fused. Input line fusing of  
VI Chip products is recommended at system level to provide  
thermal protection in case of catastrophic failure.  
The fuse shall be selected by closely matching system  
requirements with the following characteristics:  
This type of characteristic is close to the impedance characteristic  
of a DC power distribution system, both in behavior (AC dynamic)  
and absolute value (DC dynamic).  
nꢀCurrent rating  
(usually greater than maximum current of VTM module)  
When connected in an array with the same K factor, the VTM  
module will inherently share the load current (typically 5%) with  
parallel units according to the equivalent impedance divider that  
the system implements from the power source to the point of load.  
nꢀMaximum voltage rating  
(usually greater than the maximum possible input voltage)  
nꢀAmbient temperature  
nꢀNominal melting I2t  
Some general recommendations to achieve matched array  
impedances:  
Bi-Directional Operation  
nꢀDedicate common copper planes within the PCB to deliver  
and return the current to the modules.  
The VTM48EF040T050B0R is capable of bi-directional operation. If  
a voltage is present at the secondary which satisfies the condition  
VSEC > VPRI • K at the time the VC voltage is applied, or after the  
unit has started, then energy will be transferred from secondary  
to primary. The primary to secondary ratio will be maintained. The  
VTM48EF040T050B0R will continue to operate bi-directional as  
long as the primary and secondary are within the specified limits.  
nꢀProvide the PCB layout as symmetric as possible.  
nꢀApply same input / output filters (if present) to each unit.  
For further details see:  
AN:016 Using BCM® Bus Converters in High Power Arrays.  
ZPRI_EQ1  
ZSEC_EQ1  
VTM®1  
RS_1  
VPRI  
VSEC  
ZPRI_EQ2  
ZSEC_EQ2  
VTM®2  
RS_2  
+
–
Load  
DC  
ZPRI_EQn  
ZSEC_EQn  
VTM®n  
RS_n  
Figure 20 — VTM module array  
VTM™ Current Multiplier  
Page 17 of 21  
Rev 1.3  
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800 927.9474  
VTM48Ex040y050B0R  
J-Lead Package Mechanical Drawing  
mm  
(inch)  
NOTES:  
mm  
2. DIMENSIONS ARE  
.
inch  
UNLESS OTHERWISE SPECIFIED, TOLERANCES ARE:  
3. .X / [.XX] = +/-0.25 / [.01]; .XX / [.XXX] = +/-0.13 / [.005]  
4
. PRODUCT MARKING ON TOP SURFACE  
DXF and PDF files are available on vicorpower.com  
J-Lead Package Recommended Land Pattern  
+SEC1  
-SEC1  
+PRI  
+SEC2  
-SEC2  
-PRI  
3. .X / [.XX] = +/-0.25 / [.01]; .XX / [.XXX] = +/-0.13 / [.005]  
4. PRODUCT MARKING ON TOP SURFACE  
mm  
2. DIMENSIONS ARE  
.
inch  
UNLESS OTHERWISE SPECIFIED, TOLERANCES ARE:  
DXF and PDF files are available on vicorpower.com  
VTM™ Current Multiplier  
Page 18 of 21  
Rev 1.3  
11/2016  
vicorpower.com  
800 927.9474  
VTM48Ex040y050B0R  
Through-Hole Package Mechanical Drawing  
mm  
(inch)  
NOTES:  
mm  
2. DIMENSIONS ARE  
.
inch  
UNLESS OTHERWISE SPECIFIED, TOLERANCES ARE:  
3. .X / [.XX] = +/-0.25 / [.01]; .XX / [.XXX] = +/-0.13 / [.005]  
4
. PRODUCT MARKING ON TOP SURFACE  
DXF and PDF files are available on vicorpower.com  
Through-Hole Package Recommended Land Pattern  
+SEC1  
-SEC1  
+PRI  
+SEC2  
-SEC2  
-PRI  
3. .X / [.XX] = +/-0.25 / [.01]; .XX / [.XXX] = +/-0.13 / [.005]  
4. PRODUCT MARKING ON TOP SURFACE  
mm  
2. DIMENSIONS ARE  
.
inch  
UNLESS OTHERWISE SPECIFIED, TOLERANCES ARE:  
DXF and PDF files are available on vicorpower.com  
VTM™ Current Multiplier  
Page 19 of 21  
Rev 1.3  
11/2016  
vicorpower.com  
800 927.9474  
VTM48Ex040y050B0R  
Recommended Heat Sink Push Pin Location  
(NO GROUNDING CLIPS)  
(WITH GROUNDING CLIPS)  
Notes:  
5. Unless otherwise specified:  
Dimensions are mm (inches)  
tolerances are:  
1. Maintain 3.50 (0.138) Dia. keep-out zone  
free of copper, all PCB layers.  
2. (A) Minimum recommended pitch is 39.50 (1.555).  
This provides 7.00 (0.275) component  
edge-to-edge spacing, and 0.50 (0.020)  
clearance between Vicor heat sinks.  
(B) Minimum recommended pitch is 41.00 (1.614).  
This provides 8.50 (0.334) component  
edge-to-edge spacing, and 2.00 (0.079)  
clearance between Vicor heat sinks.  
3. VI Chip® module land pattern shown for reference  
only; actual land pattern may differ.  
Dimensions from edges of land pattern  
to push–pin holes will be the same for  
all full-size VI Chip® products.  
x.x (x.xx) = 0.3 (0.01)  
x.xx (x.xxx) = 0.13 (0.005)  
4. RoHS compliant per CST–0001 latest revision.  
6. Plated through holes for grounding clips (33855)  
shown for reference, heat sink orientation and  
device pitch will dictate final grounding solution.  
VTM Module Pin Configuration  
4
3
2
1
A
B
C
D
A
B
C
D
E
Signal Name  
+PRI  
Pin Designation  
A1-E1, A2-E2  
L1-T1, L2-T2  
H1, H2  
J1, J2  
+SEC  
-SEC  
+SEC  
-SEC  
+PRI  
E
F
–PRI  
TM  
VC  
PC  
+SEC  
–SEC  
G
H
TM  
VC  
PC  
H
J
J
K
L
K
L
M
N
P
R
T
K1, K2  
M
N
P
R
T
A3-D3, A4-D4, J3-M3, J4-M4  
E3-H3, E4-H4, N3-T3, N4-T4  
-PRI  
Bottom View  
VTM™ Current Multiplier  
Page 20 of 21  
Rev 1.3  
11/2016  
vicorpower.com  
800 927.9474  
VTM48Ex040y050B0R  
Vicor’s comprehensive line of power solutions includes high density AC-DC and DC-DC modules and  
accessory components, fully configurable AC-DC and DC-DC power supplies, and complete custom  
power systems.  
Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is assumed by Vicor for its use. Vicor makes no  
representations or warranties with respect to the accuracy or completeness of the contents of this publication. Vicor reserves the right to make  
changes to any products, specifications, and product descriptions at any time without notice. Information published by Vicor has been checked and  
is believed to be accurate at the time it was printed; however, Vicor assumes no responsibility for inaccuracies. Testing and other quality controls  
are used to the extent Vicor deems necessary to support Vicor’s product warranty. Except where mandated by government requirements, testing of  
all parameters of each product is not necessarily performed.  
Specifications are subject to change without notice.  
Vicor’s Standard Terms and Conditions  
All sales are subject to Vicor’s Standard Terms and Conditions of Sale, which are available on Vicor’s webpage or upon request.  
Product Warranty  
In Vicor’s standard terms and conditions of sale, Vicor warrants that its products are free from non-conformity to its Standard Specifications (the  
“Express Limited Warranty”). This warranty is extended only to the original Buyer for the period expiring two (2) years after the date of shipment  
and is not transferable.  
UNLESS OTHERWISE EXPRESSLY STATED IN A WRITTEN SALES AGREEMENT SIGNED BY A DULY AUTHORIZED VICOR SIGNATORY, VICOR  
DISCLAIMS ALL REPRESENTATIONS, LIABILITIES, AND WARRANTIES OF ANY KIND (WHETHER ARISING BY IMPLICATION OR BY OPERATION OF LAW)  
WITH RESPECT TO THE PRODUCTS, INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR REPRESENTATIONS AS TO MERCHANTABILITY,  
FITNESS FOR PARTICULAR PURPOSE, INFRINGEMENT OF ANY PATENT, COPYRIGHT, OR OTHER INTELLECTUAL PROPERTY RIGHT, OR ANY OTHER  
MATTER.  
This warranty does not extend to products subjected to misuse, accident, or improper application, maintenance, or storage. Vicor shall not be liable  
for collateral or consequential damage. Vicor disclaims any and all liability arising out of the application or use of any product or circuit and assumes  
no liability for applications assistance or buyer product design. Buyers are responsible for their products and applications using Vicor products  
and components. Prior to using or distributing any products that include Vicor components, buyers should provide adequate design, testing and  
operating safeguards.  
Vicor will repair or replace defective products in accordance with its own best judgment. For service under this warranty, the buyer must contact  
Vicor to obtain a Return Material Authorization (RMA) number and shipping instructions. Products returned without prior authorization will be  
returned to the buyer. The buyer will pay all charges incurred in returning the product to the factory. Vicor will pay all reshipment charges if the  
product was defective within the terms of this warranty.  
Life Support Policy  
VICOR’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS  
PRIOR WRITTEN APPROVAL OF THE CHIEF EXECUTIVE OFFICER AND GENERAL COUNSEL OF VICOR CORPORATION. As used herein, life support  
devices or systems are devices which (a) are intended for surgical implant into the body, or (b) support or sustain life and whose failure to perform  
when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to the  
user. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the  
failure of the life support device or system or to affect its safety or effectiveness. Per Vicor Terms and Conditions of Sale, the user of Vicor products  
and components in life support applications assumes all risks of such use and indemnifies Vicor against all liability and damages.  
Intellectual Property Notice  
Vicor and its subsidiaries own Intellectual Property (including issued U.S. and Foreign Patents and pending patent applications) relating to the  
products described in this data sheet. No license, whether express, implied, or arising by estoppel or otherwise, to any intellectual property rights is  
granted by this document. Interested parties should contact Vicor’s Intellectual Property Department.  
The products described on this data sheet are protected by the following U.S. Patents Numbers:  
5,945,130; 6,403,009; 6,710,257; 6,911,848; 6,930,893; 6,934,166; 6,940,013; 6,969,909; 7,038,917; 7,145,186; 7,166,898; 7,187,263;  
7,202,646; 7,361,844; D496,906; D505,114; D506,438; D509,472; and for use under 6,975,098 and 6,984,965.  
Vicor Corporation  
25 Frontage Road  
Andover, MA, USA 01810  
Tel: 800-735-6200  
Fax: 978-475-6715  
email  
Customer Service: custserv@vicorpower.com  
Technical Support: apps@vicorpower.com  
VTM™ Current Multiplier  
Page 21 of 21  
Rev 1.3  
11/2016  
vicorpower.com  
800 927.9474  
厂商 型号 描述 页数 下载

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CPI

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CPI

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CPI

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CPI

 		VTM-6113R2D 60至80瓦， CW迷你螺旋TWT[ 60 to 80 W, CW Mini Helix TWT ] 1 页

CPI

 		VTM-6195R1 28 W， CW螺旋TWT系列[ 28 W, CW Helix TWT Series ] 1 页

CPI

 		VTM-6196R1 20 W， CW螺旋TWT系列[ 20 W, CW Helix TWT Series ] 1 页

CPI

 		VTM-6292F8 200瓦螺旋TWT系列[ 200 W Helix TWT Series ] 1 页

CPI

 		VTM-6292M4 250W的螺旋TWT系列[ 250 W Helix TWT Series ] 1 页

TE

 		VTM1 接通延时时序模块[ On-Delay Timing Module ] 1 页

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