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ZMDI expands battery management portfolio

25 Jul 2014

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ZMD AG (ZMDI) has announced a couple of fully automotive-qualified, high-precision data-acquisition system basis chips (SBCs). As a global supplier of analogue and mixed-signal solutions for automotive, industrial, medical, information technology and consumer applications, the ZSSC1750 and ZSSC1751 are geared to extend its battery sensing and battery management product family.

Both devices include two high-precision, high-resolution 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.

ZSSC1750

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 MCUs of any size and type, giving customers the best options for selecting the most economical solutions for their requirements.

The ZSSC1750 and ZSSC1751 are integrated, precision measurement solutions for accurate prediction of battery state of health (SOH), state of charge (SOC) or state of function (SOF). They feature voltage channel input measurement range from 3.6-28.8V with an accuracy of ±60ppm of full-scale. The devices also boast 16bit internal and external temperature measurement, and only 60uA (typical) current consumption in sleep mode. The ZSSC1750 and ZSSC1751 have built-in self-test and diagnostic features. Both devices are in full production. Parts and evaluation kits are available from ZMDI. For 1,000 pieces, the ZSSC1750 is priced at $5.67 per unit and the ZSSC1751 is priced at $5.47 per unit.




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