GE Industrial Solutions HW-HC004-005-006 Series - Manual (Page 18)

Data Sheet
October 4, 2013
HW/HC004/005/006 Series DC-DC Power Module:
18-36Vdc & 36-75Vdc Input; 1.0V-5Vdc Output; 4A - 6A Output Current
LINEAGE POWER 18
Feature Descriptions (continued)
The relationship between the output voltage and the trim
resistor value for a Δ% reduction in output voltage is:
Nominal 5V, 3.3V, 2.5V, 2.0V, 1.8V, & 1.5V modules:
Nominal 1.2V module:
Nominal 1.0V module:
Connecting an external resistor (R
trim-up
) between the
TRIM pin and the V
O
(+) pin increases the output voltage
set point. To maintain set point accuracy, the trim
resistor tolerance should be ±0.5%.
The relationship between the output voltage and the trim
resistor value for a Δ% increase in output voltage is:
Nominal 5V, 3.3V, 2.5V, 2.0V, 1.8V, & 1.5V modules:
Nominal 1.2V module:
Nominal 1.0V module:
(V
O
refers to the nominal output voltage, i.e. 5.0V for V
O
on an HW004A0A. Δ% is the required % change in
output voltage, i.e. to trim a 5.0V module to 5.10V the
Δ% value is 2).
Examples:
To trim down the output of a nominal 5.0V module
(HW004A0A) to 4.90V
Δ% = 2
R
trim-down
= 249.39 k
Ω
To trim up the output of a nominal 3.3V module
(HW005A0F) to 3.63V
Δ% = 10
R
trim-up
=94.2 k
Ω
R
trim-down
= - 6.11 k
Ω
511
∆%
R
trim-down
= - 4.46 k
Ω
346
∆%
R
trim-down
= - 4.90 k
Ω
390
∆%
R
trim-up
= - - 6.11 k
Ω
5.11V
O
(100+
∆%)
1.225
∆%
511
∆%
R
trim-up
= - - 4.46 k
Ω
5.11V
O
(100+
∆%)
1.225
∆%
346
∆%
R
trim-up
= - - 6.11 k
Ω
5.11x3.3(100+10)
1.225x10
511
10
R
trim-down
= - 6.11 k
Ω
511
2
R
trim-up
= - - 4.90 k
Ω
5.11V
O
(100+
∆%)
1.225
∆%
390
∆%