Data Sheets Rev. 2
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Overview

Features and Benefits

  • Operates from a 19V to 60V Input Supply
  • 10A CC Mode Charging Current
  • 13.8V Absorption CV Voltage and 13.5V Floating CV Voltage
  • 350kHz Switching Frequency
  • Resistor-Programmable UVLO Threshold (EN/UVLO)
  • Input Short Protection
  • 11V Programmed Deeply Discharged Battery Detection
  • Capacitor Programmed 17 Hours Absorption CV Timer
  • Full-Battery Detection with Taper Current Threshold or Absorption CV Timer
  • Cycle-by-Cycle Overcurrent Limit
  • External Clock Synchronization (RT/SYNC)
  • Charger Status Flags (FLG1 and FLG2)
  • Charging Current Monitoring (ISMON)
  • Battery Temperature Sensing and Charge when Within Operating Temperature Range of -20°C to +60°C
  • Charging Voltage Temperature Compensation (-18mV/°C)
  • IC Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Complies with CISPR 32 (EN55032) Class B Conducted and Radiated Emissions

Product Details

The MAX17702EVKITA# (EV kit) provides a proven design to evaluate the MAX17702 high-efficiency, high-voltage, Himalaya synchronous step-down DC-DC lead-acid (Pb-acid) charger controller. The EV kit charges the Pb-acid battery in constant current (CC), absorption constant-voltage (CV) states, and enters an floating CV state after detecting the taper current threshold or absorption CV timer timeout in the absorption CV state. The EV kit is designed to charge the Pb-acid battery with 10A CC mode charging current (ICHGMAX) and 13.8V absorption CV voltage (VOUT) from a 19V to 60V input supply. The EV kit is optimized for 24V nominal input-voltage application. The switching frequency of the EV kit is set at 350kHz (fSW) for optimum efficiency and component size. The EV kit features an absorption CV timer (TMR) to set the maximum charging time in the absorption CV state. The EV kit features battery temperature sensing and charges only when the temperature is in the allowable charging temperature range. The EV kit also features the charging voltage temperature compensation based on battery temperature. The EV kit also provides a good layout example, which is optimized for conducted, radiated EMI and thermal performance. For more details about the IC benefits and features, refer to the MAX17702 IC data sheet.

Applications

  • Battery Backup for Lighting, Security Cameras, and Control Panels
  • Building and Home-Automation Backup Power
  • Industrial Battery Charging and Energy Storage
  • Portable Industrial Equipment
  • Power Tools

Applicable Parts

Documentation & Resources

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  • Data Sheets (1)
  • Evaluation Design Files (1)
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