MAXREFDES1277: 48V data acquisition system with integrated current sense amplifier for two-wheeler battery management applications

The MAXREFDES1277 reference design enables quick evaluation of the MAX17852/53 for 48V two-Wheeler battery management applications (BMS).

This design showcases capabilities of the MAX17852/53 like individual 14-cell voltage measurements, pack voltage, temperature (up to four sensors using general purpose inputs/outputs [GPIOs]), pack current (MAX17852 only) measurement, and passive cell balancing.

The MAX17852/53 supports ASIL-D requirements for cell voltage, temperature, current, communication, and failure mode effects analysis (FMEA).

特征

3 to 14 cell voltage measurement with ±2mV accuracy at 5°C to 40°C
Supports flexi pack configuration
Pack current measurement using external current sense resistor
Passive cell balancing up to 300mA with internal switch with odd or even cell balancing scheme (single cell or group)
Auto cell balancing configuration with undervoltage (UV) threshold and timer options
Manual cell balancing configuration
Four configurable auxiliary inputs for temperature, voltage, or GPIO
Internal die temperature measurement
Individually configurable safety alert
Overvoltage (OV), undervoltage, overtemperature and undertemperature faults
One cell-mismatch alert
Selectable universal asynchronous receiver- transmitter (UART) or serial peripheral interface (SPI)
UART configurations with packet error checking (PEC)
Dual UART configuration with redundancy
Single UART configuration
Single-side component placement
Compatible with MAX17852EVKIT software along with MINIQUSB board