TDK-Lambda CCG Series, Инструкция по эксплуатации

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INSTRUCTION MANUAL
CCG
TDK­Lambda
<Page>
10/23
Output Voltage Adjustment by External Resistor or Variable Resistor (Only CCG­S)
(1) In case of adjusting output voltage lower
(1­1) Maximum output current
In case of adjusting output voltage lower, maximum output current is until rated maximum
output current of specification.
ex)In case of CCG30­xx­12S
When setting 12V Model to 10.8V output, maximum output power = 10.8V×2.5A = 27W.
(1­2) External resister connecting method
Connect an external resistor or variable resister Ra between TRM and +Vout terminal.
To prevent the effect of noise or other, connect as short as possible because TRM terminal is
relatively high impedance.
Please refer to
Table 6­1 w hen adjusting output voltage.
Output Voltage
：
Vout(V), External Resistor Value
：
Ra(kΩ)
Output voltage could be adjusted within the ­10% of nominal output voltage
by external resistor Ra.
Fig.6­2 Basic Connection for Output Voltage Trim Down
Table 6­1 Equation of External Resistor and Output Voltage
+Vout
­Vout
Load
TRM
+
­
Ra
CCG­S
CCGxx­xx­03S
CCGxx­xx­05S
CCGxx­xx­12S
CCGxx­xx­15S
Model
関係式
Vout (V) = 3.3 +
16.05
22.8+Ra (k
Ω
)
Vout (V) = 5.01 +
53.95
32.3+Ra (k
Ω
)
Vout (V) = 12.05 +
445.7
63.1+Ra (k
Ω
)
Vout (V) = 15.08 +
732.7
74.7+Ra (k
Ω
)
Ra (k
Ω
) =
22.8 ­
16.05
3.3­Vout (V)
Ra (k
Ω
) = 32.3 ­
53.95
5.01­Vout (V)
Ra (k
Ω
) =
63.1 ­
445.7
12.05­Vout (V)
Ra (k
Ω
) = 74.7 ­
732.7
15.08­Vout (V)