UCC28630 Flyback Controller


High-power flyback controller with primary-side regulation and peak-power mode from TI

Texas Instruments' UCC28630 targets high-power, primary-side regulated flyback converters. The powerful gate driver and ability to operate in both CCM and DCM make the device suitable for applications with a wide power range. The peak-power mode allows transient peak power delivery up to 200% of nominal rating, with only a 25% peak-current increase, maximizing transformer utilization.

The transformer bias winding is used to sense output voltage for regulation, and for low-loss input voltage sensing. Advanced sampling and processing techniques allow CCM operation, and deliver excellent output voltage regulation performance for optocouplerless designs at power levels of 100 W and higher.

Features
  • High-power, primary-side regulation for output voltage and current, no optocoupler required
  • Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM) operation
  • Built-in 700 V start-up current source
  • Active X-capacitor discharge function
 
  • Constant-Current (CC) mode limiting
  • High gate-drive current 1 A source and 2 A sink
  • Low-power modes for <30 mW system standby
  • Best-in-class light load (10%) efficiency >85% for 65 W nominal power design
  • Peak-power mode for transient overload
  • Shutdown terminal interface for external NTC

UCC28630 Flyback Controller

Manufacturer Part Number Description Available Quantity Datasheets
UCC28630D IC REG CTRLR FLYBK ISO 7SOIC 264

Evaluation Module

Manufacturer Part Number Description Available Quantity Datasheets
UCC28630EVM-572 EVAL MOD FOR UCC28630 4