TDK-Lambda CHVM2R5-12-0350NW, Инструкция по эксплуатации

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INSTRUCTION MANUAL
CHVM3 Series
TDK­Lambda
<Page>
■ Setting and adjustment of output voltage
The CHVM series output voltage can be adjusted by using an external voltage or external adjustable resistor.
●The above characteristics (Output voltage ­VR resistance value characteristic) graph is an indication
of the resistance value R1 and R2.When setting the voltage to a set rate using a stable resistor,
first decide the adjustable resistor R1 and R2.
●Do not apply voltage higher than 4V+5% on the Vcont.
●Choose an adjustable resistor appliance with good temp characteristics.
●When the resistance value for the adjustable resistor is 5.0KΩ, the max output voltage of 4.0V which is 100%,
should be applied to Vcont pin. Since the max output voltage largely affects the margin of error for the
resistance value, set the resistance value at 5.0KΩ±5%.
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12V
+Vin
-Vin
Vout (+ or -)
Vout (Com)
Vref Vcont
Load
1
2
4
5
3
+
C1 C2
6
+
C1=47 μ F
C2=4700pF
Output voltage control
Apply 0v to 4V
or
VR (5K
Ω
)
R1 R2
CHVM
F1
100%
80%
60%
40%
20%
0%
Output voltage － VR resistance value characteristic
O
ut
pu
t v
ol
ta
ge
VR resistance value
R1 5K Ω
R2 0K
Ω
0K Ω
5K
Ω
Output control voltage
Output voltage － Output control voltage
characteristic
0V
100%
80%
60%
40%
20%
0%
O
ut
pu
t v
ol
ta
ge
4V 3V 2V 1V