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Wide Input (8V-40V) up to 1MHz Frequency Synchronous Buck Controller, source/sink


Package | PIN: PWP | 16
Temp: I (-40 to 85)
Carrier: Partial Tube
Qty Price
1-9 $4.58
10-24 $4.13
25-99 $3.84
100-249 $3.37
250-499 $3.16
500-749 $2.68
750-999 $2.26
1000+ $2.16


  • Operating Input Voltage 8 V to 40 V
  • Input Voltage Feed-Forward Compensation
  • < 1% Internal 0.7-V Reference
  • Programmable Fixed-Frequency up to 1-MHz
    Voltage Mode Controller
  • Internal Gate-Drive Outputs for High-Side
    and Synchronous N-Channel MOSFETs
  • 16-Pin PowerPAD™ Package (θJC = 2°C/W)
  • Thermal Shutdown
  • Externally Synchronizable
  • Programmable High-Side Sense Short-Circuit
  • Programmable Closed-Loop Soft-Start
  • TPS40054 Source Only
  • TPS40055 Source and Sink
  • TPS40057 Source and Sink With VO Prebias

Texas Instruments  TPS40055PWP

The TPS4005x is a family of high-voltage, wide-input (8 V to 40 V), synchronous, step-down controllers. The TPS4005x family offers design flexibility with a variety of user-programmable functions, including soft-start, UVLO, operating frequency, voltage feed-forward, high-side current limit, and loop compensation.

The TPS4005x uses voltage feed-forward control techniques to provide good line regulation over the wide (4:1) input voltage range, and fast response to input line transients. Near-constant modulator gain with input variation eases loop compensation. The externally programmable current limit provides pulse-by-pulse current limit, as well as hiccup mode operation using an internal fault counter for longer duration overloads.