INSTRUCTION MANUAL
CCG15
・
30
Series
TDK-Lambda
<Page>
10/23
●
Output Voltage Adjustment by External Resistor or Variable Resistor (Only CCG-S)
(1) In case of adjusting output voltage lower
(1-1) 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 CCG30-xx-12S
When setting 12V Model to 10.8V output, maximum output power = 10.8V×2.5A = 27W.
(1-2) 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 6-1 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.6-2 Basic Connection for Output Voltage Trim Down
Table 6-1 Equation of External Resistor and Output Voltage
+Vout
-Vout
Load
TRM
+
-
Ra
CCG-S
CCGxx-xx-03S
CCGxx-xx-05S
CCGxx-xx-12S
CCGxx-xx-15S
Model
Equation
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
3.3-Vout (V)
Ra (k
Ω
) =
32.3
-
53.95
5.01-Vout (V)
Ra (k
Ω
) =
63.1
-
445.7
12.05-Vout (V)
Ra (k
Ω
) =
74.7
-
732.7
15.08-Vout (V)
