TPS40075 Wide Input Synchronous Buck Controller with Voltage Feed Forward |

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Wide Input Synchronous Buck Controller with Voltage Feed Forward

Wide Input Synchronous Buck Controller with Voltage Feed Forward - TPS40075


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.


  • 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.


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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Number of Phases Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Control mode
TPS40075 Order now 4.5     28     0.7     23     20     1     1     100     1000     1.5     Enable
Frequency Synchronization
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification    
84     -40 to 85     Catalog     VQFN | 20     Controller     Voltage Mode    
TPS40077 Order now 4.5     28     0.7     23     20     1     1     300     1000     1.5     Enable
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
84     -40 to 85     Catalog     HTSSOP | 16     Controller     Voltage Mode