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TPS61289

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26-V 20-A bi-directional buck-boost converter

Product details

Vin (min) (V) 0.5 Vin (max) (V) 24 Operating temperature range (°C) -40 to 125 Topology Boost Rating Catalog Vout (min) (V) 4.5 Vout (max) (V) 25 Iq (typ) (A) 0.00019 Duty cycle (max) (%) 99.5
Vin (min) (V) 0.5 Vin (max) (V) 24 Operating temperature range (°C) -40 to 125 Topology Boost Rating Catalog Vout (min) (V) 4.5 Vout (max) (V) 25 Iq (typ) (A) 0.00019 Duty cycle (max) (%) 99.5
VQFN-HR (RZP) 14 7.5 mm² 3 x 2.5
  • VLOW voltage range: 0.5V to 23V
    • The minimum VLOW voltage is determined by the VLOW/VHIGH ratio and frequency
  • VHIGH voltage range: 4.5V to 25V
  • Pin selectable bidirectional buck or boost mode
  • Buck/boost forced PWM mode operation
  • High efficiency and power capability
    • Programmable current limit: 5A to 20A
    • Integrated 8.5mΩ high-side MOSFET
  • Switching frequency
    • FSW 250kHz when VLOW > 1.7V
    • FSW down to 100kHz when VLOW < 1.5V
    • FSW down to 50kHz when VLOW < 0.5V
    • 200mV hysteresis prevents frequency jitter
  • Synchronization capability to external clock
  • Rich protection
    • VHIGH overvoltage protection at 27V
    • VHIGH undervoltage protection at 3.1V
    • VCC undervoltage protection at 2.15V
    • Precise EN/UVLO threshold
    • Cycle-by-cycle overcurrent protection
    • Thermal shutdown
  • 2.5mm × 3.0mm VQFN 14 HotRod™ Lite package
  • VLOW voltage range: 0.5V to 23V
    • The minimum VLOW voltage is determined by the VLOW/VHIGH ratio and frequency
  • VHIGH voltage range: 4.5V to 25V
  • Pin selectable bidirectional buck or boost mode
  • Buck/boost forced PWM mode operation
  • High efficiency and power capability
    • Programmable current limit: 5A to 20A
    • Integrated 8.5mΩ high-side MOSFET
  • Switching frequency
    • FSW 250kHz when VLOW > 1.7V
    • FSW down to 100kHz when VLOW < 1.5V
    • FSW down to 50kHz when VLOW < 0.5V
    • 200mV hysteresis prevents frequency jitter
  • Synchronization capability to external clock
  • Rich protection
    • VHIGH overvoltage protection at 27V
    • VHIGH undervoltage protection at 3.1V
    • VCC undervoltage protection at 2.15V
    • Precise EN/UVLO threshold
    • Cycle-by-cycle overcurrent protection
    • Thermal shutdown
  • 2.5mm × 3.0mm VQFN 14 HotRod™ Lite package

The TPS61289 is a bidirectional buck/boost synchronous converter that integrates the high-side synchronous rectifier MOSFET and uses an external low side MOSFET. The TPS61289 can be configured as a buck or boost converter using the MODE pin. The TPS61289 can support 20A switching current and the VHIGH voltage supports up to 25V. The minimum VLOW voltage is determined by the VLOW/VHIGH ratio and frequency, for example, the VLOW voltage can support as low as 0.5V at the VHIGH = 15V condition. The device provides an excellent balance of efficiency, thermal dissipation and solution size for high power bidirectional conversion.

The TPS61289 offers adjustable switching current limit function. In addition, the device provides VHIGH overvoltage and undervoltage protection, cycle-by-cycle overcurrent protection, and thermal shutdown protection.

The TPS61289 offers a very small solution size with 2.5mm x 3.0mm VQFN HotRod™ Lite package with minimal external components.

The TPS61289 is a bidirectional buck/boost synchronous converter that integrates the high-side synchronous rectifier MOSFET and uses an external low side MOSFET. The TPS61289 can be configured as a buck or boost converter using the MODE pin. The TPS61289 can support 20A switching current and the VHIGH voltage supports up to 25V. The minimum VLOW voltage is determined by the VLOW/VHIGH ratio and frequency, for example, the VLOW voltage can support as low as 0.5V at the VHIGH = 15V condition. The device provides an excellent balance of efficiency, thermal dissipation and solution size for high power bidirectional conversion.

The TPS61289 offers adjustable switching current limit function. In addition, the device provides VHIGH overvoltage and undervoltage protection, cycle-by-cycle overcurrent protection, and thermal shutdown protection.

The TPS61289 offers a very small solution size with 2.5mm x 3.0mm VQFN HotRod™ Lite package with minimal external components.

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Technical documentation

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Type Title Date
* Data sheet TPS61289 23VLOW , 25VHIGH , 20A Bidirectional BUCK/BOOST Converter datasheet (Rev. A) PDF | HTML 04 Jan 2024
EVM User's guide TPS61289 Evaluation Module User's Guide PDF | HTML 22 Nov 2023
Certificate TPS61289EVM-113 EU Declaration of Conformity (DoC) 13 Sep 2023

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS61289EVM — TPS61289 evaluation module

The TPS61289EVM-113 is designed to help users easily evaluate and test the operation and functionality of the TPS61289 device. The TPS61289 is a stackable, bidirectional synchronous buck-boost converter that integrates the high-side synchronous rectifier FET and uses an external FET.
User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS61289 PSpice Encrypted Transient Model

SLVME35.ZIP (177 KB) - PSpice Model
Package Pins Download
VQFN-HR (RZP) 14 View options

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