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TPS631000

ACTIVE

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

Product details

Topology Buck-Boost Vin (Min) (V) 1.6 Vin (Max) (V) 5.5 Vout (Max) (V) 5.3 Vout (Min) (V) 1.2 Duty cycle (Max) (%) 100 Features Enable, Light Load Efficiency, Load Disconnect, Synchronous Rectification, UVLO Fixed Switch current limit (Typ) (A) 2.9 Switching frequency (Min) (kHz) 1800 Switching frequency (Max) (kHz) 2200 Iq (Typ) (mA) 0.008 Iout (Max) (A) 2 Rating Catalog Operating temperature range (C) -40 to 125
Topology Buck-Boost Vin (Min) (V) 1.6 Vin (Max) (V) 5.5 Vout (Max) (V) 5.3 Vout (Min) (V) 1.2 Duty cycle (Max) (%) 100 Features Enable, Light Load Efficiency, Load Disconnect, Synchronous Rectification, UVLO Fixed Switch current limit (Typ) (A) 2.9 Switching frequency (Min) (kHz) 1800 Switching frequency (Max) (kHz) 2200 Iq (Typ) (mA) 0.008 Iout (Max) (A) 2 Rating Catalog Operating temperature range (C) -40 to 125
SOT-5X3 (DRL) 8 3 mm² 2.1 x 1.2
  • 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. A) 10 Dec 2022

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

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.
Not available on TI.com
Simulation model

TPS631000 Encrypted PSPICE Model

SLVMDV2.ZIP (528 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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SOT-5X3 (DRL) 8 View options

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