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Engineering Prototype Report f
刘艳
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Engineering Prototype Report for EP-32 TOPSwitch®-GX 25 W Multiple Output DVD, Set-top Box Power Supply Using TOP245P:85 VAC to 265 VAC Input, 3.3 V, 5 V, 12 V,
-24 V, 20 W continuous / 25 W peak output
Application DVD player, Set-top box and other multiple
output applications
Author Power Integrations Applications Department
Summary and Features
• Low parts count, low cost design
• Excellent cross-regulation without linear post-regulators
• Simple input EMI filter
• Meets EN55022 B / CISPR22 B EMI with >20 dB margin
• Low no-load input power (<65 mW at 115 VAC, <90 mW at 230 VAC)
• High standby efficiency, <0.9 W input power with 0.5 W load
• High efficiency, >75%
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