Reference Design

54 W (200 W peak) Audio Amplifier Power Supply

Dual-rail power supply with high loop bandwidth and peak power for home theater systems with up to 650 watts audio power rating.

Source: Power Integrations
7/1/2009

• Greater than 74% efficiency at full load
• Capable of supplying peak load application with a 4:1 crest factor
• Ideal for audio applications which demand high peak power with low quiescent current
• High switching frequencies allow for much smaller transformers, reducing cost, weight,copper area and audible noise
• Excellent load regulation provides constant output constant voltage under extreme loading
• Fast feedback loop provides excellent response to transient loading
• Less than 1 W input power at no-load
• Protection features provide safe shutdown under fault conditions protecting audio loads
• Meets CISPR-22 / EN55022B limits for conducted EMI
• 90 – 265 VAC Input; +28 V, 0.893 A ,-28 V, 0.893 A, and +12 V, 333 mA Outputs