TPS40070

TPS40070 TPS40071 www.ti.com .................................................................................................................................................. SLUS582J – DECEMBER 2003 – REVISED APRIL 2009 HIGH-EFFICIENCY MIDRANGE INPUT SYNCHRONOUS BUCK CONTROLLER WITH VOLTAGE FEED-FORWARD FEATURES 1 2 Operation Over 4.5-V to 28-V Input Range Programmable Fixed-Frequency up to 1-MHz Voltage-Mode Controller Predictive Gate Drive™ With Anti-Cross Conduction Circuitry <1% Internal 700-mV Reference Internal Gate Drive Outputs for High-Side and Synchronous N-Channel MOSFETs 16-Pin PowerPAD™ Package Thermal Shutdown Protection TPS40070: Source Only TPS40071: Source/Sink Programmable High-Side Sense Short Circuit Protection APPLICATIONS Power Modules Networking/Telecom PCI Express Industrial Servers SIMPLIFIED APPLICATION DIAGRAM DESCRIPTION The TPS4007x is a mid voltage, wide input (4.5 V to 28 V), synchronous, step-down converter. The TPS4007x offers design flexibility with a variety of user programmable functions, including; soft-start, UVLO, operating frequency, voltage feed-forward and high-side FET sensed short circuit protection. The TPS4007x incorporates MOSFET gate drivers for external N-channel high-side and synchronous rectifier (SR) MOSFETs. Gate drive logic incorporates predictive anti-cross conduction circuitry to prevent simultaneous high-side and synchronous rectifier conduction, while minimizing to eliminating current f...