8-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) 8 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 600 Switching frequency (Max) (kHz) 1000 Iq (Typ) (mA) 0.027 Features 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)

Package | Pins | Size

VQFN-HR (RWU) 7 4 mm² 2 x 2 open-in-new Find other Boost converters (integrated switch)


  • 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 12-mΩ (LS) / 18-mΩ (HS) MOSFETs
  • 8-A Valley switching current limit
  • 94.7% Efficiency at VIN = 3.6 V, VOUT = 5 V and IOUT = 3 A
  • 1-MHz Switching frequency when VIN > 1.5 V and 0.6-MHz switching frequency when VIN < 1 V
  • ±2.5% Reference voltage accuracy over –40°C to +125°C
  • Pin-selectable auto PFM operation mode or forced PWM 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
  • 2-mm × 2-mm VQFN 7-pin package

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The TPS61022 provides a power supply solution for portable equipment and IoT devices powered by various batteries and super capacitors. The TPS61022 has minimum 6.5-A valley switch current limit over full temperature range. With a wide input voltage range of 0.5 V to 5.5 V, the TPS61022 supports supercapacitor backup power applications, which may deeply discharge the supercapacitor.

The TPS61022 operates at 1-MHz switching frequency when the input voltage is above 1.5 V. the switching frequency decreases gradually to 0.6 MHz when the input voltage is below 1.5 V down to 1 V. A MODE pin sets the TPS61022 operating either in power-save mode or forced PWM mode in light load condition. The TPS61022 only consumes a 26-µA quiescent current from VOUT in light load condition. During shutdown, the load is completely disconnected from the input power. The TPS61022 has 5.7-V output overvoltage protection, output short-circuit protection, and thermal shutdown protection.

The TPS61022 offers a very small solution size with its 2-mm × 2-mm VQFN package and minimum amount of external components.

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Technical documentation

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Type Title Date
* Data sheet TPS61022 8-A Boost converter with 0.5-V ultra-low input voltage datasheet (Rev. B) Jan. 13, 2020
Application notes TPS61022 and TPS61023 Boost Converters Layout Guidelines May 20, 2020
Application notes Adjustable Undervoltage Lockout Circuit Used in TPS61022 and TPS61023 Feb. 04, 2020
Application notes Supercap last gasp failsafe power for RF comunications in E-Meters Jan. 27, 2019

Design & development

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Hardware development

document-generic User guide

TPS61022 is an 8-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 up to 8A input current capability. It also feature special MODE pin to enable or disable the power save mode.

The TPS61022EVM-034 is the (...)

  • Input voltage range: 0.5 V to 5.5 V
  • Output voltage setting range: 2.2 V to 5.5 V
  • IOUT > 2 A at VOUT = 5 V when VIN > 1.8 V
  • < 30-µA quiescent current from VOUT
  • Pin selectable power save mode or forced PWM mode

Design tools & simulation

SLVMCZ3A.ZIP (119 KB) - PSpice Model
SLVC760.ZIP (969 KB)

Reference designs

Supercapacitor backup power supply for E-Meters reference design
PMP30528 — This reference design automatically provides back-up voltages to an E-Meter during a power interruption. While the input voltage is between 10 V to 12 V, two buck controllers (TPS62147, TPS62173) generate 3.9 V at 2 A and 5 V at 150 mA. An optional synchronous boost generates 3.3 V at 50 mA. A (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
VQFN-HR (RWU) 7 View options

Ordering & quality

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