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Texas Instruments


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TPS63050RMWR Overview

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The TPS6305x family of devices is a high efficiency, low quiescent-current buck-boostconverter, suitable for applications where the input voltage is higher or lower than theoutput.

Continuous output current can go as high as 500 mA in boost mode and as high as 1 A inbuck mode. The maximum average current in the switches is limited to a typical value of 1 A. TheTPS6305x family of devices regulate the output voltage over the complete input voltage range byautomatically switching between buck or boost mode depending on the input voltage, ensuringseamless transition between modes.

The buck-boost converter is based on a fixed-frequency, pulse-width-modulation (PWM)controller using synchronous rectification to obtain the highest efficiency. At low load currents,the converter enters Power Save Mode to maintain high efficiency over the complete load currentrange.

The PFM/PWM pin allows the user to select between automatic-PFM/PWM mode operation andforced-PWM operation. During PWM mode a fixed-frequency of typically 2.5 MHz is used. The outputvoltage is programmable using an external resistor divider, or is fixed internally on the chip. Theconverter can be disabled to minimize battery drain. During shutdown, the load is disconnected fromthe battery. The device is packaged in a 12-pin DSBGA and in a 12-pin HotRod package.


  • Real buck or boost with seamless transition between buck and boost mode
  • 2.5 V to 5.5 V Input voltage range
  • 0.5-A Continuous output current: VIN ≥ 2.5 V,
    VOUT = 3.3 V
  • Adjustable and fixed output voltage version
  • Efficiency > 90% in boost mode and > 95% in buck mode
  • 2.5-MHz Typical switching frequency
  • Adjustable average input current limit
  • Adjustable soft-start time
  • Device quiescent current < 60 μA
  • Automatic power save mode or forced PWM mode
  • Load disconnect during shutdown
  • Overtemperature protection
  • Small 1.6mm x 1.2mm, 12-pin WCSP and 2.5mm x 2.5mm 12-pin HotRod QFN package
  • Create a custom design using the:
    • TPS63050 With theWEBENCH Power Designer
    • TPS63051 With theWEBENCH Power Designer


Circuit Diagram


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