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Wide Input Synchronous Buck Controller with Voltage Feed Forward


Package | PIN: RHL | 20
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $2.86
10-24 $2.58
25-99 $2.40
100-249 $2.10
250-499 $1.97
500-749 $1.68
750-999 $1.41
1000+ $1.35


  • Operation Over 4.5-V to 28-V Input Range
  • Fixed-Frequency Voltage-Mode Controller
  • Integrated Unity Gain Amplifierfor Remote Output Sensing
  • Predictive Gate Drive™ Generation II for Improved Efficiency
  • <1% Internal 700-mV Reference
  • Input Voltage Feed Forward Control
  • Prebiased Output Compatible
  • Internal Gate Drive Outputs for High-Side and Synchronous N-Channel MOSFETs
  • Switching Frequency Programmable to 1 MHz
  • 20-Pin QFN Package
  • Thermal Shutdown Protection
  • Software Design Tool and EVM Available
    • Power Modules
    • Networking/Telecom
    • Industrial
    • Servers

Predictive Gate Drive is a trademark of Texas Instruments.

Texas Instruments  TPS40075RHLR

The TPS40075 is a mid voltage, wide input (4.5-V to 28-V),synchronous, step-down controller, offering design flexibility for a variety of user programmable functions, including; soft start, UVLO, operating frequency, voltage feed-forward and high-side FET sensed short circuit protection.

The TPS40075 drives external N-channel MOSFETs using second generation Predictive Gate Drive to minimize conduction in the body diode of the low side FET and maximize efficiency. Pre-biased outputs are supported by not allowing the low side FET to turn on until the voltage commanded by the closed loop soft start is greater than the pre-bias voltage. Voltage feed forward provides good response to input transients and provides a constant PWM gain over a wide input voltage operating range to ease compensation requirements. Programmable short circuit protection provides fault current limiting and hiccup recovery to minimize power dissipation with a shorted output. The 20-pin QFN package gives good thermal performance and a compact footprint.