Circuit design of 24W audio amplifier power supply
Summary:
The isolated flyback converter is a universal input 12V, 2A (24W) power supply that provides up to 36 W of peak power for a short period of time and maintains for a period of time. Differential mode EMI filtering is provided by C1, C2, C10 and L1. Common mode EMI filtering is provided by L1, L2, C8, and C13.
design feature
- Universal input voltage range
- Efficiency meets CEC/Energy Star 2008 requirements
- 80% efficiency (required 78%)
- Low no-load power consumption, less than 150 mW
- Compliant with CISPR-22/EN55022 B conducted EMI limits, EMI margin greater than 10 dBμV
- Integrated safety and reliability:
- Precise, auto-recovery and hysteretic shutdown with hysteresis to keep PCB temperature within safe conditions under all conditions
- Enters the auto-restart protection state when the output short circuit and the feedback loop open loop
24W audio amplifier power supply circuit diagram
See the uploading documentation for details (click to download)
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