Power Supply
PSM28-VNXP Power Supply
Specifications
| Part Number | PSM28-VNXP |
|---|---|
| Form Factor | VITA 90.4 Style B - 39mm Pitch |
| Backplane Profile | VITA 90.3 28V-Centric, 320-pin, PSU_12V-Only |
| Available Grades | FM3/Class C (Level 3 Parts); FM4/Class D (COTS); EDU (Commercial) |
| Input Voltage | 28V |
| Output Voltage | 12V, 3.3V |
| # of Outputs | 1 - unswitched; 2 - switched |
| Power | 288W (peak); 144W (nominal) |
Product overview
The Frontgrade™ PSM28-VNXP is an isolated 28V input, 150W, GaN based power supply designed as a plug-in module for VITA 90 VNX+ subsystems. Operating from a regulated or unregulated external 28V power bus, the PSM28-VNXP provides efficient power conversion to deliver tightly regulated 12V (VS1) and 3.3V_Aux power to modules plugged into a VNXP backplane. The power supply provides one dedicated and two switched 12V outputs, in addition to a dedicated, low power, 3.3V_Aux output.
Beyond power delivery to the subsystem, the PSM28-VNXP includes several fault protection features like input under/over voltage protection, EMI filtering, and output overcurrent. Additionally, the power supply includes the Frontgrade UT32M0R500 ARM-M0+™ microcontroller providing chassis management functions to the system controller as well as gathering housekeeping telemetry for the power stages.
In its standard configuration, the RPS-PS boasts the following attributes:
Primary Input Power
22V to 36V Input range, 28V Nominal
42V for 2 seconds Survival Limit
150uF Max Input Capacitance
Isolated from secondary > 1 Meg ohm at 50V
MIL-STD-461 Revision G capable