50W continuous output (200W peak) audio power supply designed by PKS607YN, with circuit diagram, bill of materials, specification file

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Summary:

The universal input supply has two main output voltages: +28 V and -28 V and contains two parallel converters. Each output can provide 25 W continuous output with 100 W peak power. Both converters use the PeakSwitch device (PKS607YN) and share an input stage. The 12 V rated output is used to provide 333 mA of output current. The duration of the peak power output is affected by temperature, depending on the ambient temperature and heat dissipation.

design feature

• Replaceable linear transformer power supply for use in home audio systems
• Compact and lightweight
• Fast transient response and high loop bandwidth for superior audio performance with Class D amplifiers
• High peak power meets audio signal crest factor requirements
• Avoid over-design and save costs
• Shutdown suppression circuitry allows the output to be reduced under extreme overload conditions, preventing audio voltage drops
• Dual converter design maintains excellent cross regulation between high voltage lines
• Auxiliary output eliminates the need for a separate auxiliary power supply
• high efficiency
• More than 75% efficiency at full load

50W continuous output (200W peak) audio power PCB physical map

50W continuous output (200W peak) audio power circuit diagram

50W continuous output (200W peak) audio power PCB layout

See the PDF document for details (click on the PDF file to download)