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TPS55285A

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22V 8A buck-boost converter with I2C interface

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Data sheet

TPS55285A

ACTIVE
Data sheet Order now

Product details

Rating Catalog Topology Buck-Boost Vin (max) (V) 22 Vin (min) (V) 2.4 Vout (max) (V) 22 Vout (min) (V) 0.8 Switch current limit (typ) (A) 8 Features Adjustable current limit, Dynamic voltage scaling, Enable, Frequency synchronization, I2C interface, Light-load efficiency, Load Disconnect, Output discharge, Spread Spectrum, Synchronous rectification, USB C/PD compatible, UVLO adjustable EMI features Frequency Dithering, Spread Spectrum Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00072 Duty cycle (max) (%) 100
Rating Catalog Topology Buck-Boost Vin (max) (V) 22 Vin (min) (V) 2.4 Vout (max) (V) 22 Vout (min) (V) 0.8 Switch current limit (typ) (A) 8 Features Adjustable current limit, Dynamic voltage scaling, Enable, Frequency synchronization, I2C interface, Light-load efficiency, Load Disconnect, Output discharge, Spread Spectrum, Synchronous rectification, USB C/PD compatible, UVLO adjustable EMI features Frequency Dithering, Spread Spectrum Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00072 Duty cycle (max) (%) 100
WQFN-HR (VAL) 15 8.75 mm² 3.5 x 2.5
  • Programmable power supply (PPS) support for USB power delivery (USB PD)
    • Wide input voltage range: 2.4V to 22V
    • Minimum input voltage for start-up: 3.0V
    • Programmable output voltage range: 0.8V to 22V with 10mV step
    • ±1% reference voltage accuracy
    • Adjustable output voltage compensation for voltage drop over the cable
    • Programmable output current limit up to 6.35A with 50mA step
  • High efficiency over entire load range
    • 92.0% efficiency at VIN = 20V, VOUT = 5V and IOUT = 5A
    • 95.7% efficiency at VIN = 12V, VOUT = 15V and IOUT = 5A
    • 92.3% efficiency at VIN = 12V, VOUT = 20V and IOUT = 3A
  • I2C programming
    • Output enable (OE) on and off
    • Slew rate of output voltage change
    • Switching frequency: 400kHz, 800kHz, 1.6MHz, 2.1MHz
    • Programmable PFM and FPWM mode at light load
    • Spread spectrum enable, disable
    • Output discharge enable, disable
  • Rich protection features
    • Input overvoltage protection
    • Output relative overvoltage protection
    • Hiccup mode for output short-circuit protection
    • Thermal shutdown protection
    • Average inductor current limit: 8A
  • Small design size
    • Four low RDS(ON) internal MOSFETs
    • Maximum switching frequency up to 2.1MHz
    • 2.5mm × 3.5mm HotRod™ WQFN package
  • Programmable power supply (PPS) support for USB power delivery (USB PD)
    • Wide input voltage range: 2.4V to 22V
    • Minimum input voltage for start-up: 3.0V
    • Programmable output voltage range: 0.8V to 22V with 10mV step
    • ±1% reference voltage accuracy
    • Adjustable output voltage compensation for voltage drop over the cable
    • Programmable output current limit up to 6.35A with 50mA step
  • High efficiency over entire load range
    • 92.0% efficiency at VIN = 20V, VOUT = 5V and IOUT = 5A
    • 95.7% efficiency at VIN = 12V, VOUT = 15V and IOUT = 5A
    • 92.3% efficiency at VIN = 12V, VOUT = 20V and IOUT = 3A
  • I2C programming
    • Output enable (OE) on and off
    • Slew rate of output voltage change
    • Switching frequency: 400kHz, 800kHz, 1.6MHz, 2.1MHz
    • Programmable PFM and FPWM mode at light load
    • Spread spectrum enable, disable
    • Output discharge enable, disable
  • Rich protection features
    • Input overvoltage protection
    • Output relative overvoltage protection
    • Hiccup mode for output short-circuit protection
    • Thermal shutdown protection
    • Average inductor current limit: 8A
  • Small design size
    • Four low RDS(ON) internal MOSFETs
    • Maximum switching frequency up to 2.1MHz
    • 2.5mm × 3.5mm HotRod™ WQFN package

The TPS55285A is a fully integrated, synchronous buck-boost converter that is designed for converting battery voltage, USB power delivery (USB PD) or adapter voltage into power supply rails. The TPS55285A integrates four 15mΩ MOSFETs to provide a high efficiency and small design size.

The TPS55285A has a wide input voltage range from 2.4V (3.0V rising) to 22V and is capable of outputting 0.8V to 22V voltage with 10mV step to support a variety of applications. The TPS55285A features 8A average inductor current limit and supplies up to 7A output current in buck mode. In boost mode, the device is able to deliver 60W from 12V input or 30W from 5V input.

Through the I2C interface, the output voltage of the TPS55285A is programmed dynamically. The default output voltage is 5V when the device is enabled. The I2C interface allows for configuration of slew rate of the output voltage change, switching frequency, forced PWM mode operation.

The TPS55285A offers input and output overvoltage protection, average inductor current limit, cycle-by-cycle peak current limit and output short circuit protection. The TPS55285A also allows for safe operating with output current limit without external output current sense resistor and hiccup mode protection in sustained overload conditions.

The TPS55285A is a fully integrated, synchronous buck-boost converter that is designed for converting battery voltage, USB power delivery (USB PD) or adapter voltage into power supply rails. The TPS55285A integrates four 15mΩ MOSFETs to provide a high efficiency and small design size.

The TPS55285A has a wide input voltage range from 2.4V (3.0V rising) to 22V and is capable of outputting 0.8V to 22V voltage with 10mV step to support a variety of applications. The TPS55285A features 8A average inductor current limit and supplies up to 7A output current in buck mode. In boost mode, the device is able to deliver 60W from 12V input or 30W from 5V input.

Through the I2C interface, the output voltage of the TPS55285A is programmed dynamically. The default output voltage is 5V when the device is enabled. The I2C interface allows for configuration of slew rate of the output voltage change, switching frequency, forced PWM mode operation.

The TPS55285A offers input and output overvoltage protection, average inductor current limit, cycle-by-cycle peak current limit and output short circuit protection. The TPS55285A also allows for safe operating with output current limit without external output current sense resistor and hiccup mode protection in sustained overload conditions.
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* Data sheet TPS55285A 22V, 8A, Buck-Boost Converter With I2 C Interface datasheet PDF | HTML 06 Jul 2026

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Evaluation board

TPS552852EVM — TPS552852 evaluation module

The TPS552852EVM helps to evaluate the behavior and performance of the TPS552852 at different input voltages, output voltages, and load conditions. This EVM is designed for 2.4V to 22V input voltage and 12V default output voltage applications. This EVM has test points for Vin, Vout, SW1, SW2, VCC, (...)
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WQFN-HR (VAL) 15 Ultra Librarian
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