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TPS40007 - Synchronous Buck Controller

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General Description

The TPS4000x are controllers for low-voltage, non-isolated synchronous buck regulators.

These controllers drive an N-channel MOSFET for the primary buck switch, and an N-channel MOSFET for the synchronous rectifier switch, thereby achieving very high-efficiency power conversion.

In addition, the device controls the delays from main switch off to rectifier turn-on and from rectifier turn-off to main switch turn-on in such a way as to minimize diode losses (both conduction and recovery) in the synchronous rectifier with TI’s proprietary Predictive Gate Drivet technology.

Overview

TPS40007 TPS40009 SLUS589B− NOVEMBER 2003 − REVISED FEBRUARY 2005 LOWĆINPUT HIGHĆEFFICIENCY SYNCHRONOUS BUCK.

Key Features

  • D Operating Input Voltage 2.25 V to 5.5 V D Output Voltage as Low as 0.7 V D 1% Internal 0.7 V Reference D Predictive Gate Drivet N-Channel MOSFET Drivers for Higher Efficiency D Externally Adjustable Soft-Start and Overcurrent Limit D Fixed-Frequency Voltage-Mode Control.
  • TPS40007, 300 kHz.
  • TPS40009, 600 kHz D Source/Sink with VOUT Prebias D 10-Lead MSOP PowerPadt Package for Higher Performance D Thermal Shutdown D Internal Boostrap Diode.

More Datasheets from Texas Instruments

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