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BQ25758A

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Controlador buck-boost bidireccional de 60 V controlado por circuito interintegrado (I²C) compati

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BQ25758A

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Detalles del producto

Number of series cells 14 Charge current (max) (A) 20 Vin (max) (V) 60 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, SuperCap Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 60 Absolute max Vin (max) (V) 70 Control topology Switch-Mode Buck-boost Control interface I2C Features IINDPM (Input current limit), Input OVP, Integrated ADC, USB C/PD compatible, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.2 Rating Catalog Operating temperature range (°C) -40 to 125
Number of series cells 14 Charge current (max) (A) 20 Vin (max) (V) 60 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, SuperCap Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 60 Absolute max Vin (max) (V) 70 Control topology Switch-Mode Buck-boost Control interface I2C Features IINDPM (Input current limit), Input OVP, Integrated ADC, USB C/PD compatible, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.2 Rating Catalog Operating temperature range (°C) -40 to 125
VQFN (RRV) 36 30 mm² 6 x 5
  • Wide input voltage operating range: 4.4V 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
    • 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: 4.4V 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
    • 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

BQ25758A 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.

BQ25758A 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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* Data sheet BQ25758A: I2C Controlled, Bidirectional Buck-Boost Controller with Wide Voltage Range datasheet PDF | HTML 23 ago 2024

Diseño y desarrollo

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Placa de evaluación

BQ25758AEVM — Módulo de evaluación BQ25758A

El módulo de evaluación (EVM) BQ25758A es un sistema de evaluación completo para el IC BQ25758A. El BQ25758AEVM tiene una entrada y una salida máximas de 55 V y una corriente de salida máxima de 10 A. El IC BQ25758A es un controlador buck-boost bidireccional de modo conmutado de amplia tensión. El (...)
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