ADI Maxim MAX17823B 12-Channel High-Voltage Data Acquisition System

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.

Part no.: MAX17823BGCB+

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Key features

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
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), Packet-Error Checking (PEC)
Factory-Trimmed Oscillators (No External Crystals Required)
Two Time-of-Day Alarms
Countdown Timer with Repeat and Pause Functions
64-Byte RAM for User Data Storage
Integrated Protection
Power-on Reset for Default Configuration
Automatic Switchover to Backup Battery or Supercapacitor on Power-Fail
Lockup-Free Operation with Bus Timeout

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

ADI Power management controller MAX17823B

ADI-Power-management-controller-MAX17823B datasheet

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Industrial Power Supplies

In short, industrial power supplies are power supplies catered towards the industrial-level applications, many of which have more demanding conditions, as compared to the standard laboratory conditions. Industrial power supplies tend to come in more ruggedized packaging, with tolerances to more extreme temperatures, higher peak-load capacities, and high isolation voltages for certain unique industrial requiremants. The power supplies usually support both AC and DC, up to voltages of 100W, as compared to the standard 24W used in laboratory settings, with most being able to change between the two with a flick of a switch.

Automotive Electronics

With IoT technologies, the automotive industry is creating innovative and advanced solutions, including connected car solutions, Advanced Driver-Assistance System (ADAS), In-vehicle infotainment systems, navigation & telematics solutions, predictive maintenance solutions, vehicle-to-vehicle (V2V) applications, vehicle to infrastructure (V21) applications and vehicle to everything (V2X) communication applications.