DER-40 datasheet(23/30 Pages) POWERINT

Part #	DER-40

Description	21W (45W peak) Multiple Output Power Supply using TOP246Y

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Manufacturer	POWERINT [Power Integrations, Inc.]

Direct Link	http://www.powerint.com

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23 / 30 page

DER-40

DVD/RW HDD PSU using TOP246Y

February 22, 2005

Page 23 of 30

Power Integrations

Tel: +1 408 414 9200 Fax: +1 408 414 9201

www.powerint.com

11 Control Loop Measurements

The power supply is loaded at 21W continuous load.

11.1 110 VAC Maximum Continuous Load

Figure 9 - Gain-Phase Plot, 110 VAC, 21W Steady State Load.

Vertical Scale: Gain = 10 dB/div, Phase = 30

°/div.

Crossover Frequency = 3 kHz Phase Margin = 105

°

11.2 230 VAC Maximum Continuous Load

Figure 10 - Gain-Phase Plot, 230 VAC, 21W Steady State Load.

Vertical Scale: Gain = 10 dB/div, Phase = 30°/div.

Crossover Frequency = 6.5 kHz, Phase Margin = 60

°

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