BYD Microelectronics (BME), a division of the global BYD Company Ltd., announced that the Multi-channel, Current Transducers in BYD Electric Cars have reached an operational milestone of more than 130,000,000 miles in the last five years. The EVs have operated for more than 400,000 miles each and the BLX9 (the main BME multi-channel current sensor) has performed without a single issue over 5 years, according to the company.
The BLX9 is used for the electronic measurement of currents: DC, AC, pulsed, mixed, with a galvanic isolation between the primary circuit and the secondary circuit. Automotive applications include hybrid and EV battery pack current sensing; fuel cell current control; DC/DC converters and AC/DC inverters; hybrid and EV motor inverter drive; and EPS and X-by-wire applications.
The BYD BLX9 was designed to minimize system footprint and reduce power consumption. It is an open-loop, Hall-effect, three-channel system that measures all three phase current leads in a single module. It is designed to withstand extreme temperatures as high as 125 ˚C and as cold as -40 ˚C . The BME has 24 different current transducer product lines with 2-10 models in each series. Its range covers from 6 amps to over 2000 amps.
Each transducer meets EN50178 standards and has transient in-rush current and power-source-reverse-polarity protection with CE/UL/ROHS markings. BYD says that the BME current transducer yields excellent linearity, high accuracy, and robust anti-interference capabilities.
BME was created in 2005 to provide quality and customized integrated circuits and discrete power devices for BYD’s vertical integration manufacturing. BME designs and fabricates power management ICs, power MOSFETs, IGBTs, FRDs, IPEMs, IPMs, TVSs, current transducers, CMOS image sensors, ambient light & proximity sensors, touch control ICs, touch panel modules, etc.
BME products cover applications in automotive, new energy, industrial, telecom and consumer electronics. BYD Microelectronics is located in Shenzhen, China, and has a turnkey service foundry in Ningbo, China, with sales and distribution offices in Asia, Europe and North America.