EPR-32 Datasheet, PDF (27/36 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP-32 − TOPSwitch-GX 25 W Multiple Output DVD, Set-top Box Power Supply Using TOP245P

13-Jul-06
EPR-32 - 25 W Multiple Output TOP245P Supply
12 Control Loop Gain/Phase Measurements
12.1 115 VAC Maximum Load
Figure 26 − Gain-Phase Plot, 180 VAC, Maximum Steady State Load.
Vertical Scale: Gain = 10 dB/div, Phase = 30°/div.
Crossover Frequency = 10 kHz, Phase Margin = 60°.
12.2 115 VAC 50% Load
Figure 27 − Gain-Phase Plot, 180 VAC, Maximum Steady State Load.
Vertical Scale: Gain = 10 dB/div, Phase = 30°/div.
Crossover Frequency = 13 kHz, Phase Margin = 70°.
Page 27 of 36
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