MYGTM01210BZN Application
16
!
13.
Notice
13.1. Input / Output capacitor
When a inductance or a switch devise are connected to the input line, or when you use a power supply with
output inductance as the input voltage source, the input voltage of the DC-DC converter will be fluctuated.
By this input voltage fluctuation, the transient load response of the DC-DC converter may be deteriorated or
abnormal oscillation may occur. So please confirm normal operation on each application.
Please use external input capacitor in order to decrease inductance of input line.
In case you use external output capacitor in order to improve transient load response, please use input
capacitor to prevent abnormal oscillation. When you use external capacitors, following capacitors are
recommendable.
Output capacitor (C3+C4+C5+C6) : Please use capacitors lesss than 4500μF
13.2. Wiring of input / output capacitor
In the case of input / output capacitor connection, in order to reduce electrical noise, please design PCBs
with consideration of the following item.
①.Please be sure to check normal operation on your system.
②.Please use low impedance capacitors with good high frequency characteristic.
③.Please shorten those leads of each capacitor as much as possible, and make sure the lead
Inductance low.
④.Both input-side and output side, please make the wiring loop between plus and minus as small as
possible.The influence of leakage inductance can be reduced.
⑤.Please design the print pattern of the main circuit as wide and short as possible.
Make wiring roop small
Make wiring roop small
+Vin
+Vout
out
+V
+Vin
-Vin
DC-DC
Converter
+Vin
Load
GND
C1
C2
shorten the leads and pattern
shorten the leads and pattern
13.3. This product should not be operated in parallel or in series.
13.4. Please do not use a connector or a socket to connect this product to your product.
The electric characteristics may be deteriorated by the influence of contact resistance.
13.5. Be sure to provide an appropriate fail-safe function on your product to prevent secondary damage
that may be caused due to abnormal functional or failure of this product.
13.6. Inrush current protection is not a feature of this product.
13.7. Please connect the input terminals with the correct polarity. If an error in polarity connection is made this
product may be damaged. If this product is damaged internally, an elevated input current may flow, and so
this product may exhibit an abnormal temperature rise, or your product may be damaged.
Please add a diode and fuse per the following diagram to protect them.
fuse
+
+
+
Load
OUT
diode
IN
-
-
Standard of fuse : current rating 15A
※Please select diode and fuse after confirming the operation of your product.
Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2010.7.14