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TPS40197
SLUS886B – NOVEMBER 2008...
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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)
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