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TPS55285

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23V, 7A fully-integrated buck-boost converter with I2C interface

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Data sheet

TPS55285

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Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck-Boost Type Converter Vin (min) (V) 2.4 Vin (max) (V) 22 Switching frequency (min) (kHz) 360 Switching frequency (max) (kHz) 2400 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 Vout (min) (V) 0.8 Vout (max) (V) 22 Iq (typ) (µA) 720 Duty cycle (max) (%) 100 Switch current limit (typ) (A) 8
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck-Boost Type Converter Vin (min) (V) 2.4 Vin (max) (V) 22 Switching frequency (min) (kHz) 360 Switching frequency (max) (kHz) 2400 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 Vout (min) (V) 0.8 Vout (max) (V) 22 Iq (typ) (µA) 720 Duty cycle (max) (%) 100 Switch current limit (typ) (A) 8
WQFN-HR (VAL) 15 8.75 mm² 2.5 x 3.5
  • Programmable power supply (PPS) support for USB power delivery (USB PD)
    • Wide input voltage range: 2.4V to 22V
    • 3.0V Minimum input voltage for start-up
    • 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
    • 96.0% efficiency at VIN = 12V, VOUT = 20V and IOUT = 3A
  • I2C Programming
    • Output enable(OE) On/Off
    • Slew rate of output voltage change
    • Switching frequency: 400kHz, 800kHz, 1.6MHz, 2.2MHz
    • Programmable PFM and FPWM mode at light load
    • Spread spectrum enable/disable
    • Output discharge enable/disable
  • Rich protection features
    • Input overvoltage protection
    • Output absolute overvoltage protection
    • Output relative overvoltage protection
    • Hiccup mode for output short-circuit protection
    • Thermal shutdown protection
    • 8A average inductor current limit
  • Small solution size
    • Four low RDS(ON) internal MOSFETs
    • Maximum switching frequency up to 2.2MHz
    • 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
    • 3.0V Minimum input voltage for start-up
    • 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
    • 96.0% efficiency at VIN = 12V, VOUT = 20V and IOUT = 3A
  • I2C Programming
    • Output enable(OE) On/Off
    • Slew rate of output voltage change
    • Switching frequency: 400kHz, 800kHz, 1.6MHz, 2.2MHz
    • Programmable PFM and FPWM mode at light load
    • Spread spectrum enable/disable
    • Output discharge enable/disable
  • Rich protection features
    • Input overvoltage protection
    • Output absolute overvoltage protection
    • Output relative overvoltage protection
    • Hiccup mode for output short-circuit protection
    • Thermal shutdown protection
    • 8A average inductor current limit
  • Small solution size
    • Four low RDS(ON) internal MOSFETs
    • Maximum switching frequency up to 2.2MHz
    • 2.5mm × 3.5mm HotRod™ WQFN package

The TPS55285 is a fully integrated synchronous buck-boost converter that is optimized for converting battery voltage, USB Power Delivery (USB PD) or adaptor voltage into power supply rails. The TPS55285 integrates four 15mΩ MOSFETs to provide a high efficiency and small size solution.

The TPS55285 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. It features 8A average inductor current limit and can supply up to 7A output current in buck mode. When working in boost mode, it can deliver 60W from 12V input or 30W from 5V input.

Through the I2C interface, the output voltage of the TPS55285 can be 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 TPS55285 offers input and output over-voltage protection, average inductor current limit, cycle-by-cycle peak current limit and output short circuit protection. The TPS55285 also ensures safe operating with output current limit without external output current sense resistor and hiccup mode protection in sustained overload conditions.

The TPS55285 allows the use of small inductor and capacitor with high switching frequency. It is available in 2.5mm × 3.5mm QFN package.

The TPS55285 is a fully integrated synchronous buck-boost converter that is optimized for converting battery voltage, USB Power Delivery (USB PD) or adaptor voltage into power supply rails. The TPS55285 integrates four 15mΩ MOSFETs to provide a high efficiency and small size solution.

The TPS55285 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. It features 8A average inductor current limit and can supply up to 7A output current in buck mode. When working in boost mode, it can deliver 60W from 12V input or 30W from 5V input.

Through the I2C interface, the output voltage of the TPS55285 can be 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 TPS55285 offers input and output over-voltage protection, average inductor current limit, cycle-by-cycle peak current limit and output short circuit protection. The TPS55285 also ensures safe operating with output current limit without external output current sense resistor and hiccup mode protection in sustained overload conditions.

The TPS55285 allows the use of small inductor and capacitor with high switching frequency. It is available in 2.5mm × 3.5mm QFN package.
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* Data sheet TPS55285 22V, 8A Buck-Boost Converter with I2 C Interface datasheet PDF | HTML 21 Feb 2025

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Evaluation board

TPS55285EVM — TPS55285 evaluation module

The TPS55285EVM-053 evaluation module (EVM) is designed to demonstrate the features and functionality of the TPS55285 device, which is a high-performance, high-efficiency synchronous buck-boost converter with I²C interface. The TPS55285 also verifies safe operating with an optional output current (...)

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WQFN-HR (VAL) 15 Ultra Librarian
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