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TPS40131

ACTIVE

Two-Phase Synchronous Buck Controller w/Integrated Mosfet Drivers

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Data sheet

TPS40131

ACTIVE
Data sheet Order now

Product details

Vin (min) (V) 1 Vin (max) (V) 40 Iout (max) (A) 50 Operating temperature range (°C) -40 to 85 Control mode current mode Topology Multiphase Rating Catalog Vout (min) (V) 0.7 Vout (max) (V) 5.8 Features Enable, Frequency synchronization, Phase Interleaving, Power good, Pre-Bias Start-Up, Remote Sense, Synchronous Rectification Iq (typ) (µA) 1000 Duty cycle (max) (%) 87.5 Number of phases 2
Vin (min) (V) 1 Vin (max) (V) 40 Iout (max) (A) 50 Operating temperature range (°C) -40 to 85 Control mode current mode Topology Multiphase Rating Catalog Vout (min) (V) 0.7 Vout (max) (V) 5.8 Features Enable, Frequency synchronization, Phase Interleaving, Power good, Pre-Bias Start-Up, Remote Sense, Synchronous Rectification Iq (typ) (µA) 1000 Duty cycle (max) (%) 87.5 Number of phases 2
VQFN (RHB) 32 25 mm² 5 x 5
  • Supports 5-V Output
  • Two-Phase Interleaved Operation
  • 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
  • APPLICATIONS
    • Point-of-Load Converter
    • Graphic Cards
    • Internet Servers
    • Networking Equipment
    • Telecommunications Equipment
    • DC Power Distributed Systems

  • Supports 5-V Output
  • Two-Phase Interleaved Operation
  • 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
  • APPLICATIONS
    • Point-of-Load Converter
    • Graphic Cards
    • Internet Servers
    • Networking Equipment
    • Telecommunications Equipment
    • DC Power Distributed Systems

The TPS40131 is a two-phase synchronous buck controller that is 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.

The TPS40131 is a two-phase synchronous buck controller that is 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.

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Technical documentation

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Type Title Date
* Data sheet Two-Phase Synchronous Buck Controller w/Integrated MOSFET Drivers datasheet 12 Feb 2007
Application note 'C6472 12Vin Flexible Pwr Design Using DCDC Controllers and LDOs (8x C6472) 26 Mar 2010
Application note TMS320C6472 5V Input Pwr Design, Integrated FET DC/DC Converters and Controllers 26 Mar 2010
EVM User's guide Using the TPS40131EVM, A 40A Single Output Two-Phase Synchronous Buck Converter (Rev. A) 08 May 2007
EVM User's guide Using the TPS40131EVM, A 40A Single Output Two-Phase Synchronous Buck Converter 23 Feb 2007

Design & development

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VQFN (RHB) 32 Ultra Librarian
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