ZHCSJX1B NOVEMBER 2008 – June 2019 TPS40197
PRODUCTION DATA.
The TPS40197 is a synchronous buck controller which provides all the necessary features to construct a high-performance DC/DC converter. Support for pre-biased outputs eliminates concerns about damaging sensitive loads during startup. Strong gate drivers for the high-side and rectifier MOSFETs decrease switching losses for increased efficiency. Adaptive gate drive timing prevents shoot through and minimizes body diode conduction in the rectifier MOSFET, also increasing efficiency. Selectable short-circuit protection thresholds and hiccup recovery from a short-circuit increase design flexibility and minimize power dissipation in the event of a prolonged output fault. A dedicated enable pin allows the converter to be placed in a very low quiescent current shutdown mode. Internally fixed switching frequency and soft-start time reduce external component count, simplifying design and layout, as well as reducing footprint and cost. The dynamic voltage identification (VID) circuitry is designed to provide Smart-Reflex™ power supply solution to DSPs with core voltage optimization.