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TPS61022RWUR

8A sync boost, 0.5-5.5V in, 2.2-5.5V out, 94.7% eff, true disconnect, pass-through, 2x2mm VQFN-7

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Manufacturer Part：

TPS61022RWUR

Package：

VQFN-HR-7 (2.0 x 2.0 x 0.6mm)

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Description

Product Overview

The TPS61022RWUR is an 8A synchronous boost converter from Texas Instruments with ultra-low 0.5V input voltage capability, designed for supercapacitor backup and battery-powered IoT applications. With integrated 12mΩ/18mΩ MOSFETs, 94.7% efficiency at 3.6V→5V/3A, selectable PFM/PWM mode, true load disconnect, and pass-through mode, it delivers high power in a tiny 2x2mm VQFN-7 package.

Key Specifications

Topology Synchronous Boost
Input Voltage Range 0.5V to 5.5V (startup from 1.8V)
Output Voltage Range 2.2V to 5.5V (adjustable)
Switch Current Limit 8A valley (6.5A min over temperature)
Integrated MOSFETs LS: 12mΩ, HS: 18mΩ
Efficiency 94.7% (3.6V→5V, 3A)
Switching Frequency 1MHz (VIN>1.5V); 0.6MHz (VIN<1V)
Quiescent Current 26µA (VOUT, auto PFM)
Shutdown Current 0.5µA (VIN), 3µA (VOUT)
Reference Voltage Accuracy ±2.5% over -40°C to +125°C
Max Duty Cycle 97%
Pass-Through Mode Yes (VIN > VOUT)
Load Disconnect True disconnect during shutdown
Output OVP 5.7V
MODE Pin Auto PFM (low) or Forced PWM (high)
Package VQFN-HR-7 (2.0 x 2.0mm)
Operating Temperature -40°C to +125°C (junction)

Features

  • 0.5V ultra-low input voltage operation
  • 8A valley switch current limit with 12mΩ/18mΩ FETs
  • 94.7% peak efficiency
  • True load disconnect during shutdown
  • Pass-through mode when VIN > VOUT
  • Auto PFM or forced PWM selectable via MODE pin
  • 26µA quiescent current in auto PFM
  • 5.7V output overvoltage protection
  • Output short-circuit protection
  • Thermal shutdown protection
  • 2mm x 2mm VQFN-7 package

Applications

  • Supercapacitor backup power
  • USB power bank / portable chargers
  • IoT and battery-powered devices
  • GPRS/GSM module power
  • Single-cell Li-ion/LiFePO4 boost
  • Low-voltage energy harvesting

The TPS61022RWUR is a high-power synchronous boost converter from Texas Instruments with an ultra-low 0.5V minimum input voltage, making it uniquely suited for supercapacitor backup applications where the energy source may be deeply discharged. It integrates 12mΩ (low-side) and 18mΩ (high-side) MOSFETs for 94.7% efficiency at 3.6V-to-5V/3A conversion. The 8A valley current limit supports high output power from low-voltage sources. A MODE pin selects between auto PFM mode (26µA IQ for light-load efficiency) and forced PWM mode (for predictable noise spectrum). The device features true load disconnect during shutdown (no body diode path from output to input), pass-through mode when VIN exceeds VOUT, 5.7V output overvoltage protection, and output short-circuit protection — all in a tiny 2x2mm VQFN-7 package.

The TPS61022 uses a synchronous boost (step-up) topology with current-mode control. During each switching cycle, the low-side MOSFET turns on, building current in the external inductor. When the inductor current reaches the valley current limit threshold, the low-side FET turns off and the high-side FET turns on, transferring the inductor energy to the output. The switching frequency is nominally 1MHz when VIN > 1.5V and decreases to 0.6MHz as VIN drops below 1V, maintaining manageable on-times at low input voltages. In auto PFM mode, the device skips pulses at light load to maintain regulation with minimal switching losses (26µA IQ). In forced PWM mode, the device switches continuously regardless of load. When VIN rises above VOUT, the pass-through mode turns on the high-side FET continuously, connecting VIN to VOUT through the inductor with very low voltage drop — useful when a primary supply is available. True disconnect is achieved because the high-side MOSFET has no body diode path from VOUT to VIN when the device is shut down.

Pin Name Description
1 GND Ground
2 SW Switch node (connect to inductor)
3 VOUT Output voltage (2.2V-5.5V)
4 FB Feedback voltage (adjust output via divider)
5 EN Enable (high = enabled, low = shutdown)
6 MODE Mode select (high = FPWM, low = auto PFM)
7 VIN Input supply (0.5V to 5.5V)
  • Supercapacitor Backup Power: Use a 2.7V supercapacitor as backup for a 3.3V or 5V system rail. When the main supply fails, the TPS61022 boosts the supercap voltage from 2.7V down to 0.5V, extracting maximum stored energy. The 0.5V minimum input allows the supercap to discharge to near-zero, extending backup time. Set MODE low (auto PFM) to minimize IQ during normal operation when the main supply is present and the TPS61022 is not switching.
  • USB Power Bank (5V/2A): Boost a single Li-ion cell (3.0V-4.2V) to 5V/2A for USB output. The 8A current limit supports 2A output even at 3.0V input. True disconnect prevents battery drain when the USB load is removed. The 94.7% efficiency minimizes heat in the compact enclosure.
  • GPRS Module Power: Supply a GPRS module that draws 2A bursts during transmission. The TPS61022 boosts a single LiFePO4 cell (3.2V) to 4.0V with 8A current limit, handling the 2A transmit bursts with margin. Forced PWM mode ensures a clean output voltage without PFM ripple during the critical transmit windows.
Model Vin Min Isw Key Difference
TPS61023 0.5V 4A Lower current, smaller solution
TPS61088 1.8V 13A Higher current, higher Vin min
MP3426 1.8V 8A MPS, similar current, higher Vin min
SY7065 0.6V 6.5A Silergy, similar Vin, lower current
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Quality Assurance

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We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

Shipping & Payment

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Contact Information

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Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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Contact Information

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Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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