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Two-Phase Synchronous Buck Controller w/Integrated Mosfet Drivers


Package | PIN: RHB | 32
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $2.89
10-24 $2.60
25-99 $2.43
100-249 $2.18
250-499 $2.03
500-749 $1.77
750-999 $1.53
1000+ $1.50


  • Supports 5-V Output
  • Two-Phase InterleavedOperation
  • Operates With Pre-Biased Outputs
  • 1-V to 40-V Power Stage Operation Range
  • Requires VIN5 @ 50 mA (typ) Depending on External MOSFETs and Switching Frequency
  • 10-µA Shutdown Current
  • Programmable Switching Frequency up to 1 MHz/Phase
  • Current Mode Control with Forced Current Sharing
  • Better than 1% Internal 0.7-V Reference
  • Resistive Divider Sets Direct Output Over Voltage Threshold.
  • Programmable Input Undervoltage Lockout
  • True Remote Sensing Differential Amplifier
  • Resistive or Inductor’s DCR Current Sensing
  • 32-Pin QFN Package
  • Can Be Used with TPS40120 to Provide a 6-Bit Digitally Controlled Output
    • Point-of-Load Converter
    • Graphic Cards
    • Internet Servers
    • Networking Equipment
    • Telecommunications Equipment
    • DC Power Distributed Systems

Texas Instruments  TPS40131RHBR

The TPS40131 is a two-phase synchronous buck controller thatis optimized for low-output voltage, high-output current applications powered from a supply between 1 V and 40 V. A multi-phase converter offers several advantages over a single power stage including lower current ripple on the input and output capacitors, faster transient response to load steps, improved power handling capabilities, and higher system efficiency.

Each phase can be operated at a switching frequency up to 1 MHz, resulting in an effective ripple frequency of up to 2 MHz at the input and the output. The two phases operates 180 degrees out-of-phase.