EPR-68 Datasheet, PDF (23/28 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP 68 - 6.6 W DC-DC Flyback Converter Using DPA-Switch- (DPA423G)

19-Jul-2005
12.2 57 VDC Maximum Load
EP68 3.3 V, 2 A DC-DC Power Supply
Figure 27 - Gain-Phase Plot, 57 VDC, Light Load (100 mA).
Vertical Scale: Gain = 10 dB / div, Phase = 30° / div.
Crossover Frequency = 10.8 kHz, Phase Margin = 40°
Figure 28 - Gain-Phase Plot, 57 VDC, Light Load (100 mA).
Vertical Scale: Gain = 10 dB / div, Phase = 30° / div.
Crossover Frequency = 0.9 kHz, Phase Margin = 60°
The results indicate adequate loop bandwidth and significant gain and phase margin.
Page 23 of 28
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