描述 Description

The UCC2541 is a synchronous buck PWM controller for high current and low output voltage applications.

For higher efficiency, it incorporates the Predictive Gate Drive? technology that virtually eliminates body diode conduction losses in synchronous rectifiers.

The UCC2541 is available in the extended temperature range of -40°C to 105°C and is offered in thermally enhanced PowerPAD? 20-pin HTSSOP (PWP) or 32-pin quad flatpack (RHB) package. This space saving package with standard 20-pin TSSOP footprint has a drastically lower thermal resistance of 1.4°C/W JC to accommodate the dual high-current drivers on board.



The UCC2541 is a synchronous buck PWM controller for high current and low output voltage applications.

For higher efficiency, it incorporates the Predictive Gate Drive? technology that virtually eliminates body diode conduction losses in synchronous rectifiers.

The UCC2541 is available in the extended temperature range of -40°C to 105°C and is offered in thermally enhanced PowerPAD? 20-pin HTSSOP (PWP) or 32-pin quad flatpack (RHB) package. This space saving package with standard 20-pin TSSOP footprint has a drastically lower thermal resistance of 1.4°C/W JC to accommodate the dual high-current drivers on board.

特性 Features

? On-Chip Predictive Gate Drive? for High-Efficiency Synchronous Buck Operation
? Dual ±3-A TrueDrive? Outputs
? On-Board Programmable Oscillator with 1-MHz Frequency Operation
? TR Input for Sequencing Operation
? Overcurrent Protection using a Parallel Average Current Mode Control Loop
? 3 Modes to Support 2.7-V to 35-V Input Bias
? Reverse Current Protection for Output Stage
? User Programmable Shutdown Using SS Pin
? ±1.0% Initial Tolerance Bandgap Reference
? High Bandwidth Error Amplifiers
? Thermally Enhanced HTSSOP 20-Pin PowerPAD? Package and QFN-32 Pin
? Synchronization Input
? Supports Pre-Bias Applications
? APPLICATIONS
? High Efficiency Non-Isolated Converters Requiring Advanced Features such as Pre-Bias Support and Tracking Capability
? Point-of-Load Modules for Servers, Telecom, and Data communication Equipments
? Good for Input Voltages of 3.3 V, 5.0 V, 12.0 V, or Intermediate Bus Voltages

Predictive Gate Drive, TrueDrive and PowerPAD are trademarks of Texas Instruments Incorporated.