GE Industrial Solutions NH020-Series - Manual (Page 11)

Lineage Power 11
Data Sheet
October 14, 2009
5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W
NH020-Series Power SIPs:
Feature Descriptions (continued)
Output Voltage Set-Point Adjustment
(Trim)
(continued)
Figure 23. NH020M Rtrim-up Test Results.
Figure 24. NH020Y Rtrim-up Test Results.
Figure 25. NH020G Rtrim-up Test Results .
Figure 26. NH020F Rtrim-up Test Results .
Overcurrent Protection
To provide protection in a fault condition, the unit is equipped
with internal overcurrent protection. The unit operates nor-
mally once the fault condition is removed.
The power module will supply up to 350% of rated current for
less than 1.25 seconds before it enters thermal shutdown.
Overtemperature Protection
To provide additional protection in a fault condition, the unit is
equipped with a nonlatched thermal shutdown circuit. The
shutdown circuit engages when Q1 or Q2 exceeds approxi-
mately 110 °C. The unit attempts to restart when Q1 or Q2
cool down and cycles on and off while the fault condition
exists. Recovery from shutdown is accomplished when the
cause of the overtemperature condition is removed.