TPS61022 8-A boost converter with 0.5-V ultra-low input voltage | TI.com

TPS61022
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8-A boost converter with 0.5-V ultra-low input voltage

 

Description

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.

Features

  • 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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WEBENCH® Designer TPS61022

  Min   Max Range
Vin  V 0.5 to 5.5V
Vout  V 2.2 to 5.5V
Iout  A ≤ 4A
Ambient Temp  °C -40 to 125°C

Parametrics

Compare all products in Boost converters (integrated switch) Email Download to Excel
Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Switch current limit (Typ) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Duty cycle (Max) (%) Operating temperature range (C) Type Rating Package Group
TPS61022 Order now 0.5     5.5     2.2     5.5     8     1     600     1000     0.027     Enable
Light Load Efficiency
Load Disconnect
Pre-Bias Start-Up
Synchronous Rectification
UVLO Fixed    
97     -40 to 125     Converter     Catalog     VQFN-HR | 7    
TLV61048 Order now 2.65     5.5     3.3     14     3.7     1     430     1250     0.1     Enable
Light Load Efficiency
Pre-Bias Start-Up    
  -40 to 125     Converter     Catalog     SOT-23 | 6    
TPS61020 Order now 0.9     6.5     1.8     5.5     1.5     1     480     720     0.025     Synchronous Rectification     100     -40 to 85     Converter     Catalog     VSON | 10    
TPS61021A Order now 0.5     4.4     1.8     4     4.3     1     50     2000     0.017     Enable
Light Load Efficiency
Load Disconnect
Synchronous Rectification    
90     -40 to 125     Converter     Catalog     WSON | 8    
TPS61023 Order now 0.5     5.5     2.2     5.5     3.7     1     500     1000     0.02     Enable
Light Load Efficiency
Load Disconnect
Pre-Bias Start-Up
Synchronous Rectification
UVLO Fixed    
97     -40 to 125     Converter     Catalog     SOT-5X3 | 6    
TPS61029 Order now 0.9     5.5     1.8     5.5     1.8     1     480     720     0.025     Synchronous Rectification