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BQ25758

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I²C controlled 60-V bi-directional buck-boost controller with USB PD EPR and PPS support

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Data sheet

BQ25758

ACTIVE
Data sheet Order now

Product details

Rating Catalog Features IINDPM (Input current limit), Input OVP, Integrated ADC, USB C/PD compatible, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.4 Vin (max) (V) 60 Absolute max Vin (max) (V) 70 Control topology Switch-Mode Buck-boost Control interface I2C Operating temperature range (°C) -40 to 85
Rating Catalog Features IINDPM (Input current limit), Input OVP, Integrated ADC, USB C/PD compatible, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.4 Vin (max) (V) 60 Absolute max Vin (max) (V) 70 Control topology Switch-Mode Buck-boost Control interface I2C Operating temperature range (°C) -40 to 85
VQFN (RRV) 36 30 mm² (6 mm × 5 mm)
  • Wide input voltage operating range: 4.2V to 60V
  • Synchronous buck-boost DC/DC controller with NFET drivers
    • Adjustable switching frequency from 200kHz to 600kHz
    • Optional synchronization to external clock
    • Integrated loop compensation with soft start
    • Selectable PFM operation for light load efficiency improvement (PFM or forced PWM option)
    • Optional gate driver supply input for optimized efficiency
  • Support USB-PD Extended Power Range (EPR) in forward and reverse power direction
    • Adjustable input and output voltage regulation from 3.3V to 60V with 20mV/step
    • Adjustable input and output current regulation (RAC_SNS, ROUT_SNS) from 400mA to 20A with 50mA/step using 5mΩ resistor
  • Bypass mode for highest efficiency with VOUT = VAC
  • Buck-only mode
  • High accuracy
    • ±2% output voltage regulation
    • ±3% output current regulation
    • ±2% input voltage regulation
    • ±3% input current regulation
  • I2C controlled for optimal system performance with resistor-programmable option
    • Hardware adjustable input and output current limits
  • Integrated 16-bit ADC for voltage, current, and temperature monitoring
  • High safety integration
    • Adjustable input overvoltage and undervoltage protection
    • Output overvoltage and overcurrent protection
    • Thermal shutdown
  • Status outputs
    • Adapter present status (PG)
    • Switcher operation status (STAT)
  • Package
    • 36-pin 5mm × 6mm QFN
  • Wide input voltage operating range: 4.2V to 60V
  • Synchronous buck-boost DC/DC controller with NFET drivers
    • Adjustable switching frequency from 200kHz to 600kHz
    • Optional synchronization to external clock
    • Integrated loop compensation with soft start
    • Selectable PFM operation for light load efficiency improvement (PFM or forced PWM option)
    • Optional gate driver supply input for optimized efficiency
  • Support USB-PD Extended Power Range (EPR) in forward and reverse power direction
    • Adjustable input and output voltage regulation from 3.3V to 60V with 20mV/step
    • Adjustable input and output current regulation (RAC_SNS, ROUT_SNS) from 400mA to 20A with 50mA/step using 5mΩ resistor
  • Bypass mode for highest efficiency with VOUT = VAC
  • Buck-only mode
  • High accuracy
    • ±2% output voltage regulation
    • ±3% output current regulation
    • ±2% input voltage regulation
    • ±3% input current regulation
  • I2C controlled for optimal system performance with resistor-programmable option
    • Hardware adjustable input and output current limits
  • Integrated 16-bit ADC for voltage, current, and temperature monitoring
  • High safety integration
    • Adjustable input overvoltage and undervoltage protection
    • Output overvoltage and overcurrent protection
    • Thermal shutdown
  • Status outputs
    • Adapter present status (PG)
    • Switcher operation status (STAT)
  • Package
    • 36-pin 5mm × 6mm QFN

BQ25758 is a wide input voltage, bidirectional switched-mode buck-boost controller. The device offers high-efficiency power conversion over a wide voltage range with output CC-CV control. The device integrates all the loop compensation for the buck-boost converter, thereby providing a high density solution with ease of use. In reverse mode, the device draws power from the output supply and regulates the input terminal voltage with an added constant current loop for protection.

Besides the I2C host-controlled mode, the device also supports programmable hardware limits. Input current, and output current regulation targets can be set with single resistor on the IIN, and IOUT pins, respectively. By default, the device is programmed to provide 5V output, and the target output voltage can be adjusted via the VOUT_REG register bits.

BQ25758 is a wide input voltage, bidirectional switched-mode buck-boost controller. The device offers high-efficiency power conversion over a wide voltage range with output CC-CV control. The device integrates all the loop compensation for the buck-boost converter, thereby providing a high density solution with ease of use. In reverse mode, the device draws power from the output supply and regulates the input terminal voltage with an added constant current loop for protection.

Besides the I2C host-controlled mode, the device also supports programmable hardware limits. Input current, and output current regulation targets can be set with single resistor on the IIN, and IOUT pins, respectively. By default, the device is programmed to provide 5V output, and the target output voltage can be adjusted via the VOUT_REG register bits.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet BQ25758: I2C Controlled, Bidirectional Buck-Boost Controller with Wide Voltage Range datasheet (Rev. B) PDF | HTML Mar 20, 2024
Application note How to Compensate for Cable Losses With BQ25758 PDF | HTML Aug 21, 2024

Design & development

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Evaluation board

BQ25758EVM — BQ25758 evaluation module

The BQ25758EVM evaluation module (EVM) is a complete evaluation system for the BQ25758 IC, a buck-boost controller with a wide input range of 4.2V to 60V, a wide output voltage range of up to 60V, and bi-directional capabilities. The BQ25758EVM has a max input and output of 55V and a max output (...)

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Application software & framework

TI-CHARGER-GUI — GUI software for use with USB2ANY & battery charging evaluation modules

The TI-CHARGER-GUI offers a web-based or standalone graphical user interface to assist in the process of evaluating, designing with, configuring or testing battery charger products. The software provides full access to registers and an easy interface to send and sequence commands.
Supported products & hardware
Calculation tool

BQ25756-DESIGN-CALC — BQ25756 design calculator

BQ25756 design calculator is a calculation tool for BQ25756 which is a wide input voltage, switched mode buck-boost Li-Ion, Li-polymer, or LiFePO4 battery charge controller with bidirectional power flow support.
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VQFN (RRV) 36 Ultra Librarian
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