Industry's first able to monitor up to 16 cells per 1 IC.
Toshiba Corporation announced it will launch a lithium-ion battery monitor chipset for automotive applications. The battery monitor IC integrated into the chipset is the industry's first to be able to manage up to 16 cells per 1 IC, allowing for a reduction of components and the development of simple, low cost battery monitoring systems.
The chipset, which integrates a battery monitor IC (TB9141FG), and microcontroller (TMPM358FDTFG), detects the remaining charge level and equalizes it among cells and can also detect abnormal battery status. It is an ideal choice that delivers enhanced battery management technology which is required for hybrid electric vehicles (HEVs) and electric vehicles (EVs).
The TB9141FG uses 96V high-voltage process and realizes monitoring of a 16-cell Li-ion battery with a single IC. The TB9141FG is able to communicate in a noisy environment, using differential signaling in a daisy chain communication link between two or more TB9141FGs, an important feature for automotive applications.
The TMPM358FDTFG is a 32-bit RISC microcontroller built around an ARM CortexTM-M3 core and is compliant with functional safety standards (IEC61508 / ISO26262). The device achieves a battery monitor system with low power consumption, due to its back up RAM function, sleep function and Toshiba's original low power technologies.
Toshiba will provide a reference model mounting the TB9141FG and the TMPM358FDTFG and a software library. It allows customers to easily create their own battery monitor system.
TB9141FG Battery Monitor IC Key Features
- Monitor up to 16 cells
- Noise tolerant communication
- ±2mV (typ.) cell-voltage-measurement-accuracy
- Voltage measurement in operating cell balancing
- Built-in self-test functions
TMPM358FDTFG Microcontroller Key Features
- Backup function in power down status of CortexTM-M3 core
- ECC (Error Check & Correct) function
- Built-in self-test functions
- Software libraries developed under ISO26262 certificated process
Availability
Sample and reference model shipments of this chipset will start in February and March 2013 respectively. Mass production will start in April 2014. Sample prices of TB9141FG and TMPM358FDTFG are 800 yen and 1,000 yen, respectively.
