Product Details
Key Features
Applications/Uses
Package/Pins | LQFP/64 |
Budgetary Price (See Notes) | 0 |
Simplified Block Diagram
Technical Docs
Data Sheet | 14-Channel High-Voltage Data-Acquisition System | Sep 24, 2020 | |
White Paper | Why Designing ICs from the Ground Up for Automotive Applications Matters |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
Package/Pins | LQFP/64 |
Budgetary Price (See Notes) | 0 |
Key Features
- AECQ-100 Grade 1 Temperature Range -40°C to 125°C
- 65V Operating Voltage
- Ultra-Low-Power Operation
- Standby Mode: 2mA
- Shutdown Mode: 2µA
- Redundant ADC and Comparator (COMP) Acquisitions
- Simultaneous Cell and Bus-Bar Voltage Acquisitions
- 14 Cell-Voltage Measurement Channels
- 1mV Accuracy (3.6V, 25°C)
- 2mV Accuracy (5°C to 40°C)
- 4.5mV Accuracy (-40°C to +125°C)
- 14 Cell-Balancing Switches
- > 300mA Software-Programmable Balancing Current
- Optimized Driving and Parking Balancing Modes
- Automated Balancing with Individual Cell Timers
- Automated Balancing by Cell Voltage
- Emergency Discharge Mode
- Six Configurable Auxiliary Inputs for Temperature, Voltage, or GPIO
- Integrated Die-Temperature Measurement
- Automatic Thermal Protection
- Individually Configurable Safety Alert
- Overvoltage, Undertemperature Faults
- Undervoltage, Overtemperature Faults
- One Cell-Mismatch Alert
- Support ASIL D Requirements for Cell Voltage, Temperature, Communication
- Selectable UART, Dual UART, or SPI Interface
- Battery-Management UART Protocol
- Daisy-Chain Up to 32 Devices
- Capacitive Communication-Port Isolation
- Up to 2Mbps Baud Rate (auto-detect)
- 1.5µs Propagation Delay (per device)
- Packet-Error Checking (PEC)
- Configurable Hardware-Alert Interfaces
- Factory-Trimmed Oscillator
- No External Crystals Required
- 32-Bit Unique Device ID
- 64-Pin (10mm x 10mm) LQFP Package
Applications/Uses
- Battery-Backup Systems (UPS)
- Battery-Powered Tools
- Electric Bikes
- Electric Vehicles (EVs)
- High-Voltage Battery Stacks
- Hybrid Electric Vehicles (HEVs)
- Super-Cap Systems
Description
Cell and bus-bar voltages ranging from -2.5V to +5V are measured differentially over a 65V common-mode range, with a typical accuracy of 1mV (3.6V cell, 25°C).If oversampling is enabled, up to 128 measurements per channel can be averaged internally with 14-bit resolution and combined with digital post-processing IIR filtering for increased noise immunity. The system can shut itself down in the event of a thermal overload by measuring its own die temperature.
For robust communications, the system uses a Maxim battery-management UART or SPI protocol, and is optimized to support a reduced feature set of internal diagnostics and rapid-alert communication through both embedded communication and hardware-alert interfaces to support ASIL D and FMEA requirements.
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Also see: EV Powertrain ›
Technical Docs
Data Sheet | 14-Channel High-Voltage Data-Acquisition System | Sep 24, 2020 | |
White Paper | Why Designing ICs from the Ground Up for Automotive Applications Matters |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .