Automotive Electronics

Automotive Battery Management Data Acquisition System ICs

ZMD AG (ZMDI) today announces the ZSSC1750 and ZSSC1751, two fully automotive-qualified, high-precision data-acquisition system basis chips (SBCs). Both the ZSSC1750 and ZSSC1751 include two high-precision, high-resolution analog-to-digital converters (ADCs) for simultaneous measurement of battery voltage and current as well as internal and external temperatures. In addition, they provide several power-saving operating modes, including an autonomous periodic wake-up from sleep mode that can run entirely self-contained. Once a fault condition, such as exceeding a predefined current, voltage or temperature threshold occurs, these SBCs will automatically wake up and alert a higher-level controller. Both SBCs are controlled via an SPI interface. The ZSSC1750 provides an additional communication option using a physical LIN interface.

“The ZSSC1750 and ZSSC1751 System Basis Chips are perfectly suited for precision data acquisition tasks in safety-critical environments, such as lead acid battery monitoring in automotive applications,” said Josef Janisch, Global Product Manager for Multimarket Sensing Products.

The two synchronous, high-resolution ADCs combined with a wide-range programmable gain amplifier allow complex battery management tasks at currents ranging from milliamperes to kiloamperes. A standard SPI interface makes these products compatible with microcontrollers of any size and type, giving customers the best options for selecting the most economical solutions for their requirements.

ZSSC1750 and ZSSC1751 features include: Integrated, precision measurement solution for accurate prediction of battery state of health (SOH), state of charge (SOC) or state of function (SOF); Two high-precision 24-bit sigma-delta ADCs; 18-bit with no missing codes; Voltage channel input measurement range from 3.6V to 28.8V with an accuracy of ±60ppm of full-scale; 16-bit internal and external temperature measurement; Only 60uA (typical) current consumption in sleep mode; and Built-in self-test and diagnostic features.

Both ZSSC1750 and ZSSC1751 are in full production. Parts and evaluation kits are available from ZMDI. For 1,000 pieces, the ZSSC1750 is priced at EUR 4,05 or USD 5.67 per unit and the ZSSC1751 is priced at EUR 3,91 or USD 5.47 per unit.

ZMD AG (ZMDI)
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