• Part: PFS757
  • Description: Combined Two-Switch Forward and Flyback Power Supply Controllers
  • Manufacturer: Power Integrations
  • Size: 1.55 MB
PFS757 Datasheet (PDF) Download
Power Integrations
PFS757

Description

The HiperTFS device family members incorporate both a high-power two-switch-forward converter and a mid-power flyback (standby) converter into a single, low-profile eSIP™ power package. The single chip solution provides the controllers for the two-switch-forward and flyback converters, high- and low-side drivers, all three of the high-voltage power MOSFETs, and eliminates the converter’s need for costly external pulse transformers.

Key Features

  • Transformer reset control
  • Prevents transformer saturation under all conditions
  • Allows >50% duty cycle operation
  • Reduces primary side RMS currents and conduction losses
  • Standby supply provides built-in overload power compensation
  • Up to 434 W total output power in a highly compact package
  • Up to 550 W peak
  • High efficiency solution easily enables design to meet stringent efficiency specifications
  • >90% efficiency at full load
  • No-load regulation and low losses at light-load