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reference designBQ25858 | Demoboard BQ25858EVM

Texas Instruments BQ25858 | Demoboard BQ25858EVM

Evaluation module for automotive and I2C controlled, 70V bidirectional buck-boost converter

Overview

TopologyBattery Management System
Input voltage4.2-55 V
Switching frequency200-600 kHz
Output 155 V / 10 A
IC revisionA

Description

The BQ25858 evaluation module (EVM) is a complete evaluation systems for the BQ25858-Q1 IC. The BQ25858EVM has a max input and output of 55V and a max output current of 10A.The BQ25858-Q1 IC is a wide voltage, bidirectional switched-mode buck-boost controller. This device offers high-efficiency power conversion over a wide voltage range with output CC-CV control. This IC has a wide input range of 4.2V to 60V and a wide output range of up to 60V

Features

  • Wide input voltage operating range: 4.2V to 55V
  • Wide output operating range: up to 55V
  • Synchronous buck-boost DC/DC controller with NFET drivers
  • Adjustable switching frequency from 200kHz to 600kHz
  • Optional synchronization to external clock
  • Optional gate driver supply input for optimized efficiency
  • I2C-controlled or resistor programmable options
  • Power up from battery (reverse mode) output 4V to 55V
  • High safety integration
  • Adjustable input overvoltage and undervoltage protection
  • Output overvoltage and overcurrent protection

Typical applications

  • Low voltage battery system
  • Automotive USB charging, Central compute unit multidomain, ADAS domain controller, Infotainment and cluster

More information

Parts approved by Texas Instruments

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λDom typ.(nm)
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150060VS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 570 nm, Bright Green
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Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear
Dominant Wavelength [typ.]570 nm
Emitting ColorBright Green 
Peak Wavelength [typ.]572 nm
Luminous Intensity [typ.]40 mcd
Forward Voltage [typ.]2 V
Chip TechnologyAlInGaP 
Viewing Angle Phi 0° [typ.]140 °
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