DER-120
Triple Output Flyback – DPA424R
October 26, 2005
11 Control Loop Measurements
11.1 Maximum Load
Figure 20 – Gain-Phase Plot, 28VDC Input Maximum Steady State Load
Vertical Scale: Gain = 8 dB/div, Phase = 40 °/div.
Crossover Frequency = 4.55 kHz Phase Margin = 49.4°
Figure 21 – Gain-Phase Plot, 48VDC Input Maximum Steady State Load
Vertical Scale: Gain = 8 dB/div, Phase = 40 °/div.
Crossover Frequency = 2.23 kHz Phase Margin = 63.7°
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
Page 21 of 25