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TDK-Lambda CHVM3 Series Instruction Manual page 7

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■ Over current protection
The CHVM series has a over load and load short protection installed, which is the over current protection.
When the product status is in over load or load short mode, the output voltage will decrease, and once the problem
has been removed, the voltage will increase again.
■ Recommended pattern
(1) The CHVM series uses a metallic case. When soldering to a double­sided PCB, the wiring for the converter
Should be on the soldering side.
Also, this converter will generate high voltages so the creepage distance should also be taken into account
when designing.
(2) When mounting to a double­sided PCB, the high voltage output pin and land should be as small as possible.
(3) The CHVM series case should be connected to the ­Vin and Vout (Com).
(4) The metallic case does not need to be touching anything.
However, when using and making contact with the metallic case, the anti land impedance should be lowered.
100
100%
output
80
60
50%
40
output
20
0
(%)
0 Output current
(lo)
CHVM
series
Over current protection characteristic
27.94
15.24
2.54
3=7.62
×
79.6
Hold
6
:
1.2
2
-  
φ
diameter
<Page>
7/10
TDK­Lambda
CHVM3 Series
INSTRUCTION MANUAL
100%
17.78
Hold
:
2.5
-  
φ
diameter

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