Produktdetails

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 85
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 85
VQFN (RRV) 36 30 mm² 6 x 5
  • 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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Technische Dokumentation

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Typ Titel Datum
* Data sheet BQ25758: I2C Controlled, Bidirectional Buck-Boost Controller with Wide Voltage Range datasheet (Rev. B) PDF | HTML 20 Mär 2024
EVM User's guide BQ25758 Evaluation Module PDF | HTML 25 Mär 2024

Design und Entwicklung

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Evaluierungsplatine

BQ25758EVM — Evaluierungsmodul BQ25758

Das BQ25758-Evaluierungsmodul (EVM) ist ein komplettes Evaluierungssystem für den BQ25758 IC. Der IC BQ25758 ist ein Abwärts/Aufwärts-Controller mit einem breiten Eingangsspannungsbereich von 4,2 V bis 60V, einem großen Ausgangsspannungsbereich von bis zu 60 V, bidirektionale Optionen. Der IC (...)

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Berechnungstool

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.
Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

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BQ25756 Stand-alone- oder I²C-gesteuerter bidirektionaler 70-V-Abwärts-/Aufwärts-Laderegler mit MPPT BQ25758 Bidirektionaler Abwärts-/Aufwärtsregler, I²C, 60 V, mit USB PD EPR und PPS-Unterstützung BQ25756E Stand-alone or I²C-controlled bidirectional buck-boost charge controller for up to 7S batteries
Hardware-Entwicklung
Evaluierungsplatine
BQ25756EVM Evaluierungsmodul BQ25756 für bidirektionalen Abwärts-/Aufwärtsbatterie-Ladecontroller mit 1 bis 14
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VQFN (RRV) 36 Optionen anzeigen

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