The MAX17823B is a data acquisition system for the management of high-voltage battery modules. The system features 12-bit SAR ADC that can measure 12 cell voltages and two temperatures in 161μs. There are 12 internal switches for cell balancing and extensive built-in diagnostics. Up to 32 devices can be daisy-chained together to manage 384 cells and monitor 64 temperatures. Cell voltages (0 to 5V) are measured differentially over a 65V common-mode range. Cell measurements have a typical accuracy of 2mV (3.6V cell, +25°C). If oversampling is enabled, up to 128 measurements per channel can be averaged internally with 14-bit resolution. The system can shut itself down in the event of a thermal overload by measuring its own die temperature. The system uses Maxim’s battery-management UART protocol for robust communications and when used in conjunction with the MAX17880 12-channel battery monitor, they are ideal for automotive battery-management systems that require a high safety integrity level. Applications * Battery Packs * Battery Systems * Electric Bikes * Electric Vehicles and Hybrid Vehicle (HEV) * High-Power Battery Backup Systems * High-Voltage, Multi-Cell Series-Stacked- * Power Tools * SuperCap Backup Systems * AEC-Q100 Grade 2 Temperature Range * -40°C to +105°C * Operating Voltage from 9V to 65V * Ultra-Low-Power Operation * Standby Mode: 2mA * Shutdown Mode: 2μA * 12 Cell-Voltage-Measurement Channels * 2mV Accuracy (3.6V, +25° C) * 5mV Accuracy (0°C to +45°C) * 10mV Accuracy (-40°C to +105°C) * 12 Cell-Balancing Switches * Up to 150mA per Switch * Emergency-Discharge Mode * Two Temperature-Measurement Channels * Die Temperature Measurement * Automatic Thermal Protection * 29 Voltage Threshold Alerts * 12 Over-Voltage Faults * 12 Under-Voltage Faults * Two Over-Temperature Faults * Two Under-Temperature Faults * One Cell Mismatch Alert (highest cell versus lowest cell) * Four GPIOs * Built-in Diagnostics to Support ASIL D and FMEA Requirements * Battery-Management UART Protocol * Daisy-Chain Up to 32 Devices * Communication Port Isolation * Up to 2Mbps Baud Rate (Autodetect) * 1.5&micros Propagation Delay per Device * Packet-Error Checking (PEC) * Factory-Trimmed Oscillators * No External Crystals Required * 10mm x 10mm Package (64-Pin LQFP) https://elecena.pl/product/22319432/12-channel-high-voltage-data-acquisition-system 2022-12-27 https://elecena.pl/product/22319432/12-channel-high-voltage-data-acquisition-system 2025-01-17