STMicroelectronics Enhances Current Sensing for Improved Control, Efficiency and Safety

- High-side current-sense amplifiers deliver wide-input common-mode voltage range for applications up to 70V

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2010-06-23 11:18

서울--(뉴스와이어)--STMicroelectronics (NYSE: STM), a world leader in ICs for sensing and control, has unveiled a chip that simplifies the design of power management, monitoring and safety equipment by allowing direct and accurate measurement of current in power lines operating at up to 70V.

Accurate current measurements are essential when managing the delivery of power in various automotive, telecom and industrial systems. The information can be used to optimize power consumption or to identify faults such as a failed power supply or jammed motor, which can cause excessive current to flow. Current is usually sensed using a series shunt resistor and a network of traditional amplifiers, an approach that complicates design, imposes high power losses and limits accuracy.

The TSC103 is the latest in ST’s family of high-side current-sense amplifiers, which simplify design by connecting directly to power-supply lines at high voltages. This approach requires only a small sensing resistor and consumes less power than the conventional solution. The TSC103 accepts a common-mode input from 2.9V up to 70V and measures current more accurately than similar competing devices. The common-mode input range can also be set from -2.1V to 65V in dual-supply configurations, with outstanding stability of the accuracy versus common-mode voltage. The output is proportional to the measured current and can be connected directly to the analog input of a microcontroller.

In addition to the TSC103, ST has also introduced the TSC1031, featuring enhanced EMI filtering to maintain performance in electrically noisy environments. Both devices have adjustable sensitivity that allows their use in diverse applications, such as 24V vehicle systems, 48V telecom equipment, multi-LED display backlights, or solid-state lighting. The devices are fully ESD specified for rugged performance and they can operate from -40°C to 125°C.

Major features of TSC103/TSC1031:
· 2.7V to 5.5V operating supply voltage
· Selectable output gain: 20V/V (TSC103 only), 25V/V (TSC103 only), 50V/V, 100V/V
· Maximum 360-microamp current consumption
· 2.9V to 70V common-mode input range
· -2.1V to 65V common-mode input range in dual-supply configuration
· -16V to 75V common-mode surviving range, to withstand reverse-battery and load-dump conditions

The TSC103 and the TSC1031 are available in industry-standard SO8 and miniature TSSOP8 packages and are priced from $0.96 for sample quantities in industrial grade and $1.12 for automotive- grade devices. Alternative pricing options are available for larger quantities.

About STMicroelectronics
STMicroelectronics is a global leader serving customers across the spectrum of electronics applications with innovative semiconductor solutions. ST aims to be the undisputed leader in multimedia convergence and power applications leveraging its vast array of technologies, design expertise and combination of intellectual property portfolio, strategic partnerships and manufacturing strength. In 2009, the Company’s net revenues were $8.51 billion. Further information on ST can be found at www.st.com.

ST마이크로일렉트로닉스 개요
ST마이크로일렉트로닉스는 혁신적인 반도체 솔루션을 다양한 전자 애플리케이션 분야의 고객들에게 제공하고 있는 세계적인 선도업체이다. ST는 자사의 방대한 기술, 설계 전문기술 및 IP 포트폴리오 통합, 전략적 협력업체와 강력한 제조시설 등을 활용하여 멀티미디어 컨버전스 및 전력 애플리케이션 분야에서 명실상부한 선도업체가 되는 것을 목표로 하고 있다. ST의 2010년도 매출은 103억 5,000만 달러이다. ST에 대한 보다 상세한 정보는 www.st.com를 참조하라.

웹사이트: http://www.st.com