TPS40054

Product Folder Sample & Buy Technical Documents Tools & Software TPS40054: Not Recommended For New Designs Support & Community TPS40054, TPS40055, TPS40057 SLUS593I – DECEMBER 2003 – REVISED DECEMBER 2014 TPS4005x Wide-Input Synchronous Buck Controller 1 Features 1 Operating Input Voltage 8 V to 40 V Input Voltage Feed-Forward Compensation < 1% Internal 0.7-V Reference Programmable Fixed-Frequency up to 1-MHz Voltage Mode Controller Internal Gate-Drive Outputs for High-Side and Synchronous N-Channel MOSFETs 16-Pin PowerPAD™ Package (θJC = 2°C/W) Thermal Shutdown Externally Synchronizable Programmable High-Side Sense Short-Circuit Protection Programmable Closed-Loop Soft-Start TPS40054 Source Only TPS40055 Source and Sink TPS40057 Source and Sink With VO Prebias 2 Applications Power Modules Networking and Telecom Industrial and Servers 3 Description The TPS4005x is a family of high-voltage, wide-input (8 V to 40 V), synchronous, step-down controllers. The TPS4005x family offers design flexibility with a variety of user-programmable functions, including soft-start, UVLO, operating frequency, voltage feed-forward, high-side current limit, and loop compensation. The TPS4005x uses voltage feed-forward control techniques to provide good line regulation over the wide (4:1) input voltage range, and fast response to input line transients. Near-constant modulator gain with input variation eases loop compensation. The externally programmable curren...