TPS40197

Product Folder Order Now Technical Documents Tools & Software Support & Community TPS40197 SLUS886B – NOVEMBER 2008 – REVISED JUNE 2019 TPS40197 4.5-V to 14-V Input, 6-A Buck Controller With Four-Bit VID Interface 1 Features 1 Input Voltage Range: 4.5 V to 14 V 4-Bit Dynamic VID-On-The-Fly Support VID Programmable Output Voltage with Programmable Transition Rate Fixed Switching Frequency of 520 kHz Selectable Low-Side (Three Settings) and Fixed High-Side Thermally Compensated Overcurrent Protection Power Good Indicator Internal 5-V Regulator Voltage Mode Control Internally Fixed 5.5-ms Soft-Start Time Prebias Output Safe Thermal Shutdown at 140°C 16-Pin QFN Package 2 Applications Smart-Reflex™ DSPs POL Modules Telecom 3 Description The TPS40197 is a synchronous buck controller that operates from 4.5 V to 14 V input supply nominally. The controller implements voltage-mode control architecture with the switching frequency fixed at 520 kHz. The higher switching frequency facilitates the use of smaller inductor and output capacitors, thereby providing a compact power-supply solution. An adaptive anti-cross conduction scheme is used to prevent shoot through current in the power FETs. The TPS40197 integrates the PWM control and 4-bit VID interface in a single chip to allow seamless onthe-fly VID changes with programmable transition rate. It provides a simple power solution for SmartReflex™ DSP cores. Device Information(1) PART NUMBER PACKAGE ...