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OUTPUT VOLTꢀGE ꢀDJUSTMENT (1500 SERIES DUꢀL OUTPUT)
The converter’s output voltage may be trimmed to 10% of the nominal output voltage.
TRIM UP
Trim output voltage up by connecting an external resistor between Pins 5 and 6. Use the following equation.
Reference Table 1 for variable ꢀ.
ꢀ
Δ %
- 24 (ꢁΩ)
Radj-up =
Example:
If we want to trim 5% up for 12V output units,
where ꢀ = 2.23, Δ % = 0.05
2.23
0.05
- 24 ꢁΩ = 20.6 ꢁΩ
Radj-up =
CASE A
Output Voltage
ꢀ
Table 1.
5V
12V
15V
1.87
2.23
2.28
TRIM DOWN
Trim output voltage down by connecting an external resistor between Pins 5 and 8. Use the following
equation. Reference Table 2 for variable C and D.
C
Δ %
- D (ꢁΩ)
Radj-down =
Example:
If we want to trim 5% down for 5V output units,
where C = 5.63, D = 31.5, Δ % = 0.05
5.63
0.05
- 31.5 ꢁΩ = 81.1 ꢁΩ
Radj-down =
CASE A
Output Voltage
C
D
Table 2.
5V
12V
15V
5.63
19.3
25.1
31.5
45.5
51.4
>> B-119
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