EPR-12 Datasheet, PDF (33/40 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP-12 - 145 W PC Forward Converter with TOP247 and 10 W 5 V Output Standby Flyback with TNY266

01-Feb-05
EPR-12 – PC Forward Converter with Standby Flyback Power Supply
11 Waveforms
0.5 A/div
+ 5 V output
3.3 V Output
Figure 21 – Primary Drain Current at Start-up,
Activated from Remote ON/OFF
with 120 VAC Input.
Figure 22 – +5 V and 3.3 V Rise at Turn-on from
Remote ON/OFF , 120 VAC Input,
5 V out at 12 A, 3.3 V at 12 A,
0 A on +12 V.
5 V Standby
5 V Standby
5 V Main
5 V Main
Figure 23 – 5 V Main and 5 V Standby Start-up
(120 VAC). Max Load on all Outputs.
Figure 24 – 5 V and 5 V Standby Drop out After
AC off Max Load on 5 V Standby, Min
Load on all Other Outputs.
Page 33 of 40
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