Maxim intros high voltage sensors for e- cars

SAN JOSE, USA: Maxim Integrated Products has introduced its fourth generation of high voltage sensor for drive train batteries in e-cars. The MAX17823, the high voltage sensor, features an integrated safety diagnosis function which is in accordance to the safety standard ISO26262. The device extends the driving range of electric vehicles and at the same time, it optimises the safety and reliability of batteries and fuel cells.

The device has also got an interface which is equipped with a proprietary UART communication interface with differential PHY. With the help of this interface, the chip serves all the requirements of an automotive environment.

Costly digital isolators or optocouplers are not required as the MAX17823 provides uninterrupted cell monitoring even when the battery remains disconnected. The hot-plug capability at the battery connections guarantees highest levels of reliability for design and production of battery management systems (BMS).

The device measures the voltages at an accuracy of 2mV or better and has got diagnosis functions that prevent the system from premature shutdown. The daisy-chain design of the UART supports cable lengths of up to 3m and meets highest industrial and automotive EMI requirements.

The operating temperature range covers the span from -40°C to +105°C. The device comes in an LQFP package.