Power Integrations - 300W fwd pwr supply

This engineering report describes a 61 V (nominal), 280 W power supply reference design operating from 90-264 VAC. A 5 V, 4 A standby output is also provided. The power supply main output is designed with a constant voltage/ constant current characteristic for use in battery charger applications.

The design is based on the PFS7528H and TFS7707H, with the main forward stage operating at 66 kHz.