3.7-A boost converter with 0.5-V ultra-low input voltage


Product details


Vin (Min) (V) 0.5 Vin (Max) (V) 5.5 Vout (Min) (V) 2.2 Vout (Max) (V) 5.5 Switch current limit (Typ) (A) 3.7 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 500 Switching frequency (Max) (kHz) 1000 Iq (Typ) (mA) 0.02 Features Bypass Mode Pass-through Mode, Enable, Light Load Efficiency, Load Disconnect, Pre-Bias Start-Up, Synchronous Rectification, UVLO Fixed Duty cycle (Max) (%) 97 Operating temperature range (C) -40 to 125 Rating Catalog open-in-new Find other Boost converters (integrated switch)

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  • Input voltage range: 0.5 V to 5.5 V
  • 1.8-V Minimum input voltage for start-up
  • Output voltage setting range: 2.2 V to 5.5 V
  • Two 47-mΩ (LS) / 68-mΩ (HS) MOSFETs
  • 3.7-A Valley switching current limit
  • 94% Efficiency at VIN = 3.6 V, VOUT = 5 V and IOUT = 1.5 A
  • 1-MHz Switching frequency when VIN > 1.5 V and 0.5-MHz switching frequency when VIN < 1 V
  • Typical 0.1-µA shutdown current from VIN and SW
  • ±2.5% Reference voltage accuracy over –40°C to +125°C
  • Auto PFM operation mode at light load
  • Pass-through mode when VIN > VOUT
  • True disconnection between input and output during shutdown
  • Output overvoltage and thermal shutdown protections
  • Output short-circuit protection
  • 1.2-mm × 1.6-mm SOT563 (DRL) 6-pin package
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TPS61023 device is a synchronous boost converter with 0.5-V ultra-low input voltage. The device provides a power supply solution for portable equipment and smart devices powered by various batteries and super capacitors. The TPS61023 has typical 3.7-A valley switch current limit over full temperature range. With a wide input voltage range of 0.5 V to 5.5 V, the TPS61023 supports super capacitor backup power applications, which may deeply discharge the super capacitor.

The TPS61023 operates at 1-MHz switching frequency when the input voltage is above 1.5 V. The switching frequency decreases gradually to 0.5 MHz when the input voltage is below 1.5 V down to 1 V. The TPS61023 enters power-save mode at light load condition to maintain high efficiency over the entire load current range. The TPS61023 consumes a 20-µA quiescent current from VOUT in light load condition. During shutdown, the TPS61023 is completely disconnected from the input power and only consumes a 0.1-µA current to achieve long battery life. The TPS61023 has 5.7-V output overvoltage protection, output short circuit protection, and thermal shutdown protection.

The TPS61023 offers a very small solution size with 1.2-mm × 1.6-mm SOT563 (DRL) package and minimum amount of external components.

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Technical documentation

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Type Title Date
* Data sheet TPS61023 3.7-A Boost Converter with 0.5-V Ultra-low Input Voltage datasheet (Rev. B) Aug. 18, 2020
Application note Measuring and Understanding the Output Voltage Ripple of a Boost Converter Feb. 22, 2021
Application note Designing a Low-Cost, High-Accuracy Infrared Thermometer Nov. 25, 2020
Technical article Accelerate your electric mask design Jul. 01, 2020
Application note TPS61022 and TPS61023 Boost Converters Layout Guidelines May 20, 2020
Application note Adjustable Undervoltage Lockout Circuit Used in TPS61022 and TPS61023 Feb. 04, 2020

Design & development

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Hardware development

document-generic User guide

TPS61023 is a 3-A boost converter with ultra low input voltage. It features 0.5-V to 5.5-V input voltage range, 2.2-V to 5.5-V adjustable output voltage and has minimum 3-A valley switch current limit.

The TPS61023EVM-052 is the evaluation module for the TPS61023 with output voltage setting to 5 V.

  • Input voltage range: 0.5 V to 5.5 V
  • Output voltage setting range: 2.2 V to 5.5 V
  • IOUT > 1 A at VOUT = 5 V when VIN > 1.8 V
  • < 20-µA quiescent current from VOUT

Software development

SLVC803.ZIP (1206 KB)

Design tools & simulation

SLVMD68A.ZIP (793 KB) - PSpice Model
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