UCC28951 Series

Green phase-shifted full-bridge controller with SR control for Wide input voltage Range

Catalog

Green phase-shifted full-bridge controller with SR control for Wide input voltage Range

Part	Operating Temperature [Min]	Operating Temperature [Max]	Output Phases	Clock Sync	Output Type	Synchronous Rectifier	Number of Outputs	Supplier Device Package	Topology	Mounting Type	Duty Cycle (Max)	Package / Case	Package / Case	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Control Features	Output Configuration	Frequency - Switching [Max]
Texas Instruments UCC28951PWT	-40 °C	125 ¯C	1		Transistor Driver		6	24-TSSOP	Full-Bridge	Surface Mount	95 %	24-TSSOP	0.173 in 4.4 mm	8 V	17 V	Enable Frequency Control Soft Start	Positive	1 MHz

Catalog

Green phase-shifted full-bridge controller with SR control for Wide input voltage Range

Key Features

• Enhanced zero-voltage switching (ZVS) rangeDirect synchronous rectifier (SR) controlLight-load efficiency management including:Burst mode operationDiscontinuous conduction mode (DCM), dynamic SR on/off controlAverage- or peak-current mode control with programmable slope compensation and voltage-mode controlClosed-loop soft-start and enable functionProgrammable switching frequency up to 1 MHz with bidirectional synchronization(±3%) cycle-by-cycle current limit protection with hiccup mode support150µA start-up currentVDD undervoltage lockoutWide temperature range: –40°C to +125°CEnhanced zero-voltage switching (ZVS) rangeDirect synchronous rectifier (SR) controlLight-load efficiency management including:Burst mode operationDiscontinuous conduction mode (DCM), dynamic SR on/off controlAverage- or peak-current mode control with programmable slope compensation and voltage-mode controlClosed-loop soft-start and enable functionProgrammable switching frequency up to 1 MHz with bidirectional synchronization(±3%) cycle-by-cycle current limit protection with hiccup mode support150µA start-up currentVDD undervoltage lockoutWide temperature range: –40°C to +125°C

Description

The UCC28951 controller is an enhanced version of the UCC28950. It is a fully compatible drop-in replacement for the UCC28950. The UCC2895x devices use advanced control of the full-bridge in addition to active control of the synchronous rectifier (SR) output stage. ZVS operation ensured over a wide range of operating conditions, while the load current naturally tunes the switching delays of the secondary-side synchronous rectifiers(SR). This functionality maximizes overall system efficiency. Easily get started with the UCC2895x 600W phase shifted full bridge design review/application note, The 24-pin, TSSOP package complies with RoHS requirements. The UCC28951 controller is an enhanced version of the UCC28950. It is a fully compatible drop-in replacement for the UCC28950. The UCC2895x devices use advanced control of the full-bridge in addition to active control of the synchronous rectifier (SR) output stage. ZVS operation ensured over a wide range of operating conditions, while the load current naturally tunes the switching delays of the secondary-side synchronous rectifiers(SR). This functionality maximizes overall system efficiency. Easily get started with the UCC2895x 600W phase shifted full bridge design review/application note, The 24-pin, TSSOP package complies with RoHS requirements.