GE Industrial Solutions NH020-Series - Manual (Page 12)

Lineage Power 12
Data Sheet
October 14, 2009
5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W
NH020-Series Power SIPs:
Thermal Considerations
To predict the approximate cooling needed for the SIP, deter-
mine the power dissipated as heat by the unit for the particu-
lar application. Figures 29—32 show typical heat dissipation
for the SIP over a range of output currents.
Note: Dimensions are in millimeters and (inches).
Figure 27. Thermal Test Setup.
Proper cooling can be verified by measuring the power SIP’s
temperature at lead 7 of Q31 as shown in Figure 28.
Figure 28. Temperature Measurement Location.
The temperature at this location should not exceed 115 °C.
The output power of the SIP should not exceed the rated
power for the SIP as listed in the Ordering Information table.
Convection Requirements for Cooling
To predict the approximate cooling needed for the SIP, deter-
mine the power dissipated as heat by the unit for the particu-
lar application. Figures 29—32 show typical heat dissipation
for the SIP over a range of output currents.
Figure 29. NH020M Power Dissipation vs. Output
current.
Figure 30. NH020Y Power Dissipation vs. Output
Current.
Figure 31. NH020G Power Dissipation vs. Output
Current.