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TPS631000

ACTIVE

1.5-A output current, high-power-density buck-boost converter

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Data sheet

TPS631000

ACTIVE
Data sheet Order now

Product details

Rating Catalog Topology Buck-Boost Vin (max) (V) 5.5 Vin (min) (V) 1.6 Vout (max) (V) 5.3 Vout (min) (V) 1.2 Features Enable, Light Load Efficiency, Load Disconnect, Synchronous Rectification, UVLO Fixed Operating temperature range (°C) -40 to 125 Switching frequency (min) (kHz) 1800 Switching frequency (max) (kHz) 2200 Iq (typ) (µA) 8 Duty cycle (max) (%) 100 Switch current limit (typ) (A) 2.9 Type Converter
Rating Catalog Topology Buck-Boost Vin (max) (V) 5.5 Vin (min) (V) 1.6 Vout (max) (V) 5.3 Vout (min) (V) 1.2 Features Enable, Light Load Efficiency, Load Disconnect, Synchronous Rectification, UVLO Fixed Operating temperature range (°C) -40 to 125 Switching frequency (min) (kHz) 1800 Switching frequency (max) (kHz) 2200 Iq (typ) (µA) 8 Duty cycle (max) (%) 100 Switch current limit (typ) (A) 2.9 Type Converter
SOT-5X3 (DRL) 8 3.36 mm² 2.1 x 1.6
  • 1.6-V to 5.5-V input voltage range
    • Device input voltage > 1.65 V for start-up
  • 1.2-V to 5.3-V output voltage range (adjustable)
  • High output current capability, 3-A peak switch current
    • 2-A output current for VIN ≥ 3 V, VOUT = 3.3 V
    • 1.5-A output current for VIN ≥ 2.7 V, VOUT = 3.3 V
  • High efficiency over the entire load range
    • 8-µA typical quiescent current
    • Power save mode
  • 150-mV load-step response at a 1-A current step
  • Peak current buck-boost mode architecture
    • Seamless mode transition with < 20-mV output ripple
    • Forward and reverse current operation
    • Start-up into pre-biased outputs
    • Fixed-frequency operation with 2-MHz switching
  • Safety and robust operation features
    • Overcurrent protection and short-circuit protection
    • Integrated soft start with active ramp adoption
    • Overtemperature protection and overvoltage protection
    • True shutdown function with load disconnect
    • Forward and backward current limit
  • Small solution size
    • Small 1-µH inductor
    • Works with one 0805 output capacitor over the full VOUT range
  • Create a custom design using the TPS631000 with the WEBENCH Power Designer
  • 1.6-V to 5.5-V input voltage range
    • Device input voltage > 1.65 V for start-up
  • 1.2-V to 5.3-V output voltage range (adjustable)
  • High output current capability, 3-A peak switch current
    • 2-A output current for VIN ≥ 3 V, VOUT = 3.3 V
    • 1.5-A output current for VIN ≥ 2.7 V, VOUT = 3.3 V
  • High efficiency over the entire load range
    • 8-µA typical quiescent current
    • Power save mode
  • 150-mV load-step response at a 1-A current step
  • Peak current buck-boost mode architecture
    • Seamless mode transition with < 20-mV output ripple
    • Forward and reverse current operation
    • Start-up into pre-biased outputs
    • Fixed-frequency operation with 2-MHz switching
  • Safety and robust operation features
    • Overcurrent protection and short-circuit protection
    • Integrated soft start with active ramp adoption
    • Overtemperature protection and overvoltage protection
    • True shutdown function with load disconnect
    • Forward and backward current limit
  • Small solution size
    • Small 1-µH inductor
    • Works with one 0805 output capacitor over the full VOUT range
  • Create a custom design using the TPS631000 with the WEBENCH Power Designer

The TPS631000 is a constant frequency peak current mode control buck-boost converter. The device has a 3-A peak current limit (typical) and 1.6-V to 5.5-V input voltage range. The TPS631000 provides a power supply solution for system pre-regulators and voltage stabilizers.

Depending on the input voltage, the TPS631000 automatically operates in boost, buck, or in 3-cycle buck-boost mode when the input voltage is approximately equal to the output voltage. The transitions between modes happen at a defined duty cycle and avoid unwanted toggling within the modes to reduce output voltage ripple. 8-µA quiescent current and power save mode power enable the highest efficiency for light to no-load conditions.

The TPS631000 offers a very small solution size with a 1.2-mm × 2.1-mm SOT-583 package, a 1-µH inductor, and one 0805 output capacitor.

The TPS631000 is a constant frequency peak current mode control buck-boost converter. The device has a 3-A peak current limit (typical) and 1.6-V to 5.5-V input voltage range. The TPS631000 provides a power supply solution for system pre-regulators and voltage stabilizers.

Depending on the input voltage, the TPS631000 automatically operates in boost, buck, or in 3-cycle buck-boost mode when the input voltage is approximately equal to the output voltage. The transitions between modes happen at a defined duty cycle and avoid unwanted toggling within the modes to reduce output voltage ripple. 8-µA quiescent current and power save mode power enable the highest efficiency for light to no-load conditions.

The TPS631000 offers a very small solution size with a 1.2-mm × 2.1-mm SOT-583 package, a 1-µH inductor, and one 0805 output capacitor.
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Technical documentation

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* Data sheet TPS631000 1.5-A Output Current, High Power Density Buck-Boost Converter datasheet (Rev. B) PDF | HTML 20 Jun 2022
Application note 배터리로 구동되는 카메라 및 비디오 초인종을 위한 전원 레일 설계 PDF | HTML 19 Sep 2023
Application note Power Rails Design for Battery Powered Camera and Video Doorbell PDF | HTML 25 May 2023

Design & development

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Evaluation board

TPS631000EVM — TPS631000 high power density buck-boost converter evaluation module

The TPS631000 is a constant frequency peak current mode control buck-boost converter. The device has typical 2.9-A peak current limit and input voltage range of 1.6 V to 5.5 V. The TPS631000 provides a power supply solution for system pre-regulator and voltage stabilizer.
User guide: PDF | HTML
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Simulation model

TPS631000 Encrypted PSPICE Model

SLVMDV2.ZIP (528 KB) - PSpice Model
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SOT-5X3 (DRL) 8 Ultra Librarian
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