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TPS55289

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30-V, 8-A buck-boost converter with I²C interface

Product details

Topology Buck-Boost Vin (Min) (V) 3 Vin (Max) (V) 30 Vout (Max) (V) 22 Vout (Min) (V) 0.8 Duty cycle (Max) (%) 100 Features Adjustable Current Limit, Dynamic Voltage Scaling, Enable, Frequency Synchronization, I2C interface, Light Load Efficiency, Load Disconnect, Output Discharge, Spread Spectrum, Synchronous Rectification, UVLO Adjustable Switch current limit (Typ) (A) 8 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 2200 Iq (Typ) (mA) 0.76 Iout (Max) (A) 8 Rating Catalog Operating temperature range (C) -40 to 125
Topology Buck-Boost Vin (Min) (V) 3 Vin (Max) (V) 30 Vout (Max) (V) 22 Vout (Min) (V) 0.8 Duty cycle (Max) (%) 100 Features Adjustable Current Limit, Dynamic Voltage Scaling, Enable, Frequency Synchronization, I2C interface, Light Load Efficiency, Load Disconnect, Output Discharge, Spread Spectrum, Synchronous Rectification, UVLO Adjustable Switch current limit (Typ) (A) 8 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 2200 Iq (Typ) (mA) 0.76 Iout (Max) (A) 8 Rating Catalog Operating temperature range (C) -40 to 125
  • Programmable power supply (PPS) support for USB power delivery (USB PD)
    • 3.0-V to 30-V wide input voltage range
    • 0.8-V to 22-V with 10-mV step programmable output voltage range
    • ±1% reference voltage accuracy
    • Adjustable output voltage compensation for voltage droop over the cable
    • Programmable output current limit up to 6.35 A with 50-mA step
    • ±5% accurate output current monitoring
    • I2C interface
  • High efficiency over entire load range
    • 96% efficiency at VIN = 12 V, VOUT = 20 V, and IOUT = 3 A
    • Programmable PFM and FPWM mode at light load
  • Avoid frequency interference and crosstalk
    • Optional clock synchronization
    • Programmable switching frequency from 200 kHz to 2.2 MHz
  • EMI mitigation
    • Optional programmable spread spectrum
    • Lead-less package
  • Rich protection features
    • Output overvoltage protection
    • Hiccup mode for output short-circuit protection
    • Thermal shutdown protection
    • 8-A average inductor current limit
  • Small solution size
    • Maximum switching frequency up to 2.2 MHz
    • 3.0-mm × 5.0-mm HotRod™ QFN package
  • Programmable power supply (PPS) support for USB power delivery (USB PD)
    • 3.0-V to 30-V wide input voltage range
    • 0.8-V to 22-V with 10-mV step programmable output voltage range
    • ±1% reference voltage accuracy
    • Adjustable output voltage compensation for voltage droop over the cable
    • Programmable output current limit up to 6.35 A with 50-mA step
    • ±5% accurate output current monitoring
    • I2C interface
  • High efficiency over entire load range
    • 96% efficiency at VIN = 12 V, VOUT = 20 V, and IOUT = 3 A
    • Programmable PFM and FPWM mode at light load
  • Avoid frequency interference and crosstalk
    • Optional clock synchronization
    • Programmable switching frequency from 200 kHz to 2.2 MHz
  • EMI mitigation
    • Optional programmable spread spectrum
    • Lead-less package
  • Rich protection features
    • Output overvoltage protection
    • Hiccup mode for output short-circuit protection
    • Thermal shutdown protection
    • 8-A average inductor current limit
  • Small solution size
    • Maximum switching frequency up to 2.2 MHz
    • 3.0-mm × 5.0-mm HotRod™ QFN package

The TPS55289 is a synchronous buck-boost converter that is optimized for converting battery voltage or adapter voltage into power supply rails. The TPS55289 integrates four MOSFET switches, providing a compact solution for USB power delivery (USB PD) application.

The TPS55289 has up to 30-V input voltage capability. Through the I2C interface, the output voltage of the TPS55289 can be programmed from 0.8 V to 22 V with 10-mV step. When working in boost mode, the device can deliver 60 W from a 12-V input. It is capable of delivering 45 W from 9-V input voltage.

The TPS55289 employs an average current-mode control scheme. The switching frequency is programmable from 200 kHz to 2.2 MHz by an external resistor and can be synchronized to an external clock. The TPS55289 also provides optional spread spectrum to minimize peak EMI.

The TPS55289 offers output overvoltage protection, average inductor current limit, cycle-by-cycle peak current limit, and output short circuit protection. The TPS55289 also makes sure it safely operates with optional output current limit and hiccup-mode protection in sustained overload conditions.

The TPS55289 can use a small inductor and small capacitors with high switching frequency. It is available in a 3.0-mm × 5.0-mm QFN package.

The TPS55289 is a synchronous buck-boost converter that is optimized for converting battery voltage or adapter voltage into power supply rails. The TPS55289 integrates four MOSFET switches, providing a compact solution for USB power delivery (USB PD) application.

The TPS55289 has up to 30-V input voltage capability. Through the I2C interface, the output voltage of the TPS55289 can be programmed from 0.8 V to 22 V with 10-mV step. When working in boost mode, the device can deliver 60 W from a 12-V input. It is capable of delivering 45 W from 9-V input voltage.

The TPS55289 employs an average current-mode control scheme. The switching frequency is programmable from 200 kHz to 2.2 MHz by an external resistor and can be synchronized to an external clock. The TPS55289 also provides optional spread spectrum to minimize peak EMI.

The TPS55289 offers output overvoltage protection, average inductor current limit, cycle-by-cycle peak current limit, and output short circuit protection. The TPS55289 also makes sure it safely operates with optional output current limit and hiccup-mode protection in sustained overload conditions.

The TPS55289 can use a small inductor and small capacitors with high switching frequency. It is available in a 3.0-mm × 5.0-mm QFN package.

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Technical documentation

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Type Title Date
* Data sheet TPS55289 30-V, 8-A Buck-Boost Converter with I2C Interface datasheet 28 Mar 2022
User guide TPS55289 Buck-Boost Converter Evaluation Module User's Guide 23 Mar 2022
Certificate TPS55289EVM EU RoHS Declaration of Conformity (DoC) 15 Mar 2022

Design & development

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Evaluation board

TPS55289EVM — TPS55289 evaluation module for 36-V, 8-A/4-A, I²C fully integrated buck-boost converter

The TPS55289 is a synchronous buck-boost converter that is optimized for converting battery voltage or adaptor voltage into power supply rails. The TPS55289 integrates four MOSFET switches providing a compact solution for USB Power Delivery (USB PD) application.

Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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