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4.5V to 28V Input, Synchronous Buck Controller with Voltage Feed Forward


Package | PIN: PWP | 16
Temp: I (-40 to 85)
Carrier: Partial Tube
Qty Price
1-9 $3.45
10-24 $3.11
25-99 $2.89
100-249 $2.54
250-499 $2.38
500-749 $2.02
750-999 $1.70
1000+ $1.63


  • Operation Over 4.5-V to 28-V Input Range
  • Programmable, Fixed-Frequency, up to 1-MHz, Voltage-Mode Controller
  • Predictive Gate Drive™ Anti-Cross-Conduction Circuitry
  • <1% Internal 700-mV Reference
  • Internal Gate Drive Outputs for High-Side and Synchronous N-Channel MOSFETs
  • 16-Pin PowerPAD™ Package
  • Thermal Shutdown Protection
  • Pre-Bias Compatible
  • Power-Stage Shutdown Capability
  • Programmable High-Side Sense Short-Circuit Protection
    • Power Modules
    • Networking/Telecom
    • PCI Express
    • Industrial
    • Servers

Predictive Gate Drive, PowerPAD are trademarks of Texas Instruments.
All other trademarks are the property of their respective owners.

Texas Instruments  TPS40077PWP

The TPS40077 is a midvoltage, 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 TPS40077 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 16-pin PowerPAD package gives good thermal performance and a compact footprint.