UCC28501DWG4

Overview

The UCC28501DWG4 is a BiCMOS power factor correction and pulse width modulation combination controller manufactured by Texas Instruments. It integrates average current mode control for the PFC stage and voltage mode control for the PWM stage within a single package. The device supports Boost, Flyback, and Forward topologies with a switching frequency of 1 MHz. It operates in an SOIC-16 package, providing dual outputs with a maximum duty cycle of 50%. The component functions with a 5 V output voltage and 1 A output current capability, operating reliably between -40°C and +85°C.

Feature Summary

• Integrates average current mode PFC control with voltage mode PWM control
• Supports multiple converter topologies including Boost, Flyback, and Forward
• Features high-speed switching capabilities with defined rise and fall times

Applications

• Power factor correction circuits in AC-DC converters
• Combined PFC and PWM power supply designs
• High-efficiency power management systems requiring integrated control

Procurement Notes

Verify the specific suffix G4 to confirm lead-free compliance and RoHS status as per manufacturer specifications. Ensure the SOIC-16 package variant matches the required footprint for PCB layout. Confirm that the 1 MHz switching frequency aligns with the thermal and electromagnetic interference requirements of the target design. Cross-reference the datasheet revision to ensure compatibility with existing reference designs.

Selection Notes

Select this component when a single IC solution is required for both power factor correction and isolated DC-DC conversion stages. It is suitable for applications demanding high efficiency and reduced component count compared to discrete solutions. Consider the 1 MHz switching frequency for potential size reduction in passive components. Verify that the dual-output drive capability meets the gate drive requirements of the external MOSFETs or transistors in the circuit.

Part Context

This part belongs to the UCC285xx series of combination controllers from Texas Instruments. These devices are designed to simplify the design of high-performance power supplies by integrating two distinct control loops into one package. The DWG4 designation indicates a specific tape and reel or tube packaging option within the standard SOIC-16 form factor, ensuring consistency in manufacturing and handling procedures.

Replacement Considerations

UCC28501DW