Table of Contents
Overview
Global warming, air pollution and other environmental issues have accelerated the trend away from the internal combustion engine (ICE*) towards EV, PHEV, HEV and other environmentally conscious vehicles.
The EU ELV* Directive is a vigorous effort to reduce the environmental impact through a reduction of substances of concern including lead. However, the 12V lead-acid battery is exempt from the Directive and will continue to be used as there is no alternative that can replace its use in ICE, EV, PHEV or HEV vehicles.
Since 12V lead-acid batteries are expected to be prohibited in the near future, battery manufacturers are working on developing a 12V lithium-ion battery replacement. Lithium-ion batteries differ from lead-acid batteries in that they require a BMS* for high-accuracy monitoring of battery voltage, charge-discharge current, temperature, etc. To prevent battery depletion, a reduction in standby current is indispensable.
ABLIC provides a host of products that are ideal as ICs in a BMS. ABLIC's lineup includes lithium-ion battery protection ICs suitable for voltage monitoring of any battery cell, high-speed battery monitoring ICs suitable for total voltage monitoring of battery cells, operational amplifiers suitable for monitoring charge-discharge current, intermittently operating convenience timer ICs suitable for reducing standby current or low current consumption power supply ICs. ABLIC has a host of products enabling selection of ICs ideal for 12V BMS.
- *ELV: End of Life Vehicle
- *BMS: Battery Management System
Block Circuit
Click each product group for more product information.
*VD: Voltage detector (Reset IC) *LDO: Low-dropout regulator *WDT: Watchdog timer
ICs ideal for 12V BMS
| Product | Recommended product | Applications and Features |
|---|---|---|
| Lithium-ion Battery Protection IC | S-19192 | Battery monitoring IC for 3-serial to 6-serial cell pack. With a standalone monitoring function and self-diagnosis (self-test) function. |
| Battery Monitoring IC (Voltage detector) | S-19114 | Industry's fastest detection response time of 10µs max. Built-in SENSE Pin reverse connection protection circuit. Low current consumption of 2.0µA. |
| Battery Monitoring IC (Voltage detector) | S-191E | Provides overvoltage and undervoltage monitoring. Built-in SENSE Pin reverse connection protection circuit. Current consumption of 0.9µA. |
| Battery Monitoring IC (Voltage detector) | S-19113 | Provides undervoltage monitoring. Built-in SENSE Pin reverse connection protection circuit. Current consumption of 0.6µA. |
| Operational amplifier | S-19630A | High-accuracy current detection. 36V operation, Rail-to-Rail input/output, low offset voltage of 50μV. |
| Operational amplifier | S-19611A | High-accuracy current detection. 5.5V operation, Rail-to-Rail input/output, low offset voltage of 100μV. |
| Convenience Timer | S-35720 A | Ultra-low current consumption of 0.2uA typ. Reduce standby current by operating the system intermittently. |
| LDO Regulator (Linear Regulator) | S-19310 | Supplies and monitors power to the timer IC controlling intermittent operation. World's lowest current consumption of 2.2µA. With reset function. |
| Watchdog Timer | S-19518/9 | With reset and LDO regulator functions. Current consumption of 3.2µA. |
| EEPROM | S-25AxxxB | SPI Serial EEPROM. Comes with a variety of functions for preventing incorrect operation. Ensures 300,000 rewrites in operation at up to 125℃. |