ST intros temperature stable measurement ICs for power management and motor control apps

GENEVA, SWITZERLAND: STMicroelectronics is leading progress toward lower-cost precision control of functions such as battery monitoring, power management and motor control with its latest generation of high-side current-sensing ICs. As a single-chip high-side current-sense amplifier, ST's TSC1021 simplifies the design of accurate measurement circuitry in electronic control units. ST achieves a lower cost than existing devices by leveraging its own high-voltage manufacturing process.

"The TSC1021 will provide an unmatched price-performance proposition suitable for a number of important markets," said Alberto De Marco, Director, HiRel and Standard Products Business Unit, Analog, Power and MEMS Group. "In addition to numerous consumer and automotive opportunities, it will also be chosen for smart power management in equipment such as wireless base stations and computer servers."

The TSC1021 provides a common-mode operating range of 2.8V to 30V and the device can withstand an outstanding range of -32V to +60V on its input pins without damage, enabling the device to target a variety of applications at a far more competitive price for equipment such as automotive actuators and battery-powered products.

In addition to its more focused common-mode voltage range, the TSC1021 benefits from high temperature stability, as well as high immunity to electromagnetic interference (EMI) thanks to its built-in filtering. These features will safeguard performance in industrial and automotive environments, and permit use in equipment such as accurate positioning mechanisms and safety systems including use in automotive such as window control, electric doors and seats, cooling fan and fuel pump applications.

Major features of the TSC1021
* 2.8V to 30V common-mode voltage range.
* -32V to +60V surviving range (reversed battery and load-dump conditions).
* Output voltage drift 100 ppm/degrees C maximum on the full temperature range.
* Input offset drift 8uV/degrees C maximum on the full temperature range.
* Overall current consumption below 300uA.
* Operating temperature range: -40 degrees C to 125 degrees C.
* AEC-Q100 automotive qualification.

The TSC1021 is in production now in the TSSOP-8 package, priced at $0.68 in quantities of 1000. Alternative pricing options are also available for larger orders.