TDK-Lambda CHVM2 Series, Инструкция по эксплуатации

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INSTRUCTION MANUAL
CHVM2 Series
TDK­Lambda
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■ ON/OFF Control
By opening and closing the ON/OFF pin and ­Vin pin the external voltage can be turned on and off.
Between the ON/OFF pin (5) and ­Vin pin (2)
1) Open will turn the output ON
2) Short(0 to 1.0V
､
1mAmax) will turn the output OFF
The ON/OFF pin is internally pulled up to the +Vin, so be careful of the voltage from the switching element
of the ON/OFF pin (photo couplers, transistors, etc)
Keep the (5) open when not using the ON/OFF control.
The chattering to the ON/OFF pin will affect the output voltage, so choose one without any chattering.
When the output is turned off by ON/OFF control, the residual output voltage should be within 0.5%.
■ Over current protection
The CHVM series installed the over current protection to protect from the over load and load short. When the
product status is in over load or load short mode, the output voltage will be decreased, and once the problem
has been removed, the voltage will automatically recover.
The over current protection has a hold back characteristic.
The load should be set more than minimum resistor value which according to each series.
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-Vin
ON/OFF
(5)
(2)
Non-isolation type
-Vin
ON/OFF
(5)
(2)
Isolation type
10
0
80
60
40
20
0
0 Output current (lo)
100
％
100% output
50% output
O
utp
ut
vo
lta
ge
s
et
va
lu
e
(%)
CHVM Series
Over current protection
characteristic