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e-power Journal > News > Focus > Test&Measurements > ROHM 40 V window voltage detector for very high accuracy and ultra-low power consumption
NewsTest&Measurements

ROHM 40 V window voltage detector for very high accuracy and ultra-low power consumption

Giovanni Di Maria
Giovanni Di Maria September 1, 2022
Updated 2022/09/01 at 6:19 PM
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Highly reliable, low-power voltage monitoring for industrial and automotive equipment requiring functional safety. ROHM has developed BD48HW0G-C, the high-precision, ultra-low current consumption voltage detector, optimized for a wide range of automotive and industrial applications that require voltage monitoring of electronic circuits for added safety, including drives electronic control systems for the automotive sector and industrial automation equipment. In recent years, the continuous technological innovation aimed at automation that has affected the automotive and industrial equipment sectors has increased the demand for greater safety. At the same time, to build safer systems, it is necessary to develop products that provide guarantees in terms of safety (fail-safe measures and functional safety) in the event of an accident. To date, ROHM has developed over 1,000 voltage detectors that play a leading role in ensuring the safety of the equipment. With a complete product line-up, ROHM supplies over 250 million pieces worldwide each year (figure for fiscal 2021) for a wide range of low voltage applications.

Contents
Application examplesWhat is Nano Energy technology?

The new BD48HW0G-C window model uses high voltage BiCDMOS processes along with ROHM’s proprietary analog design technology. The goal is to allow maximum operating voltages of 40 V and a voltage detection accuracy of +/- 0.75%, the best in the industry. At the same time, the detection voltage can be freely set, allowing high-precision monitoring of abnormal voltages in a wide range of applications, from low to high voltage, so as to obtain extremely reliable systems with minimal operating anomalies. In addition to this, BD48HW0G-C leverages ROHM’s proprietary technology with ultra-low current consumption Nano Energy, which reduces power consumption to just 500 nA (0.5 µA, only 6% compared to standard products with functionality and equivalent precision). It also allows for trouble-free use in battery-powered automotive systems that show a high power consumption with the engine off. This makes the product also suitable for voltage monitoring in various power supply circuits for automotive and industrial applications that require functional safety.

For the future, ROHM plans to expand its line-up of single type high voltage fixed sense voltage detectors featuring Nano Energy technology to provide increased safety in automotive and industrial environments. The BD48HW0G-C window voltage detector features a wide operating voltage range from 1.8V to 40V and a voltage detection accuracy of +/- 0.75% (over the entire range temperature), the best in the industry. In addition to a maximum operating voltage of 40V, voltage sensing can be freely set allowing for high-precision monitoring of abnormal voltages in a wide range of applications, both at low and high voltages, contributing to highly reliable systems that maximize the efficiency in power supplies in the automotive and industrial sectors. The BD48HW0G-C achieves an ultra-low current consumption of 500nA thanks to ROHM’s Nano Energy technology. This is a consumption of just 6% compared to standard products with equivalent functions and precision, a feature that makes it suitable for applications where increasing power consumption is a problem.

Application examples

Automotive systems: inverters for electric and hybrid vehicles, electronic control units, ADAS applications, on-board infotainment. Industrial equipment: industrial automation equipment, measuring instruments, sensor systems and further automotive and industrial applications that require voltage monitoring.

What is Nano Energy technology?

Nano Energy means proprietary ultra-low current consumption technology that achieves quiescent current (no load current consumption) in the order of nA by bringing together advanced analog technologies covering circuit design, layout and processes using the system of vertical integration of ROHM. This helps to extend not only the operating times of battery-powered IoT and mobile devices, but also to improve efficiency in automotive and industrial devices in cases where an increase in power consumption is problematic. https://www.rohm.com/support/nano

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TAGGED: consumption, detector, voltage
Giovanni Di Maria September 1, 2022
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