MAX17880 [MAXIM]
Ensures Safe Operation of Li-Ion Battery Packs While Reducing System Cost;
| 型号： | MAX17880 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Ensures Safe Operation of Li-Ion Battery Packs While Reducing System Cost 电池 |
| 文件： | 总2页 (文件大小：358K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ROBUST BMS SOLUTION
Ensures Safe Operation of Li-Ion Battery Packs While Reducing System Cost
Our groundbreaking BMS architecture provides the most comprehensive safety and reliability available while greatly reducing
system cost. It employs a low-power, capacitively coupled daisy chain to overcome the shortcomings of current-driven
architectures.
At the heart of the system is Maxim’s fourth-generation high-voltage battery-management IC (MAX17823). This daisy-chainable
12-cell device integrates a full suite of ISO-26262 diagnostic features to ensure ASIL D compliance. To minimize isolation
requirements, our proprietary architecture utilizes a unidirectional, differential UART-to-SPI bridge (MAX17841B) to provide a
robust interface between the cell monitoring ICs and the BMS microprocessor’s SPI port. This approach only requires one pair of
low-cost transformers at the bottom of the daisy chain to achieve galvanic isolation for the high-voltage electronics. In contrast,
current-driven architectures require isolation transformers at each BMS monitoring IC, imposing a significant cost penalty.
Additionally, Maxim’s proprietary daisy chain achieves the fastest speeds for cell-stack measurements and ASIL diagnostics.
This gives you the most accurate synchronization to pack current measurements and, therefore, most accurate state-of-charge
estimation. The result is higher battery service life, higher driving range per charge, and lower system cost.
Key Advantages
Safe
Cost Effective
Future Proof
• Proprietary differential UART daisy
chain has best-in-class EMC/EMI
robustness
• Capacitively coupled daisy chain
only requires one pair of isolation
transformers at bottom of daisy chain
• Superior noise immunity for future
fast-charge techniques
• High robustness for different battery
chemistries
• Integrated self-diagnostics for ASIL D
compliance
• Built-in diagnostics minimize part count
and development costs
• Supports cable lengths greater than 1m
for optimal distribution of cells
• World-class measurement and
diagnostic speed at 100 measurements
per second
BMS Product Brief
PACK +
PACK
SWITCHES
MAX17823
MAX17880
BATTERY
MODULE
SLAVE
MONITOR
&
REDUNDANT
FAULT
MONITOR
CONTROL
TEMP
TEMP
MAX17823
MAX17880
BATTERY
MODULE
SLAVE
MONITOR
&
REDUNDANT
FAULT
MONITOR
CONTROL
MAX17823
MAX17880
BATTERY
MODULE
SLAVE
MONITOR
&
REDUNDANT
FAULT
MONITOR
CONTROL
TEMP
DIFFERENTIAL
UART
DIFFERENTIAL
UART
ISO
ISO
MASTER
CONTROLLER
MAX17841B
MAX17841B
SPI
UART-SPI
INTERFACE
UART-SPI
INTERFACE
PACK
SWITCHES
PACK -
www.maximintegrated.com/MAX17823
www.maximintegrated.com/MAX17841B
© 2014 Maxim Integrated Products, Inc. All rights reserved. Maxim Integrated and the Maxim Integrated logo are trademarks of
Maxim Integrated Products, Inc., in the United States and other jurisdictions throughout the world.
Rev. 0; January 2014
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