28 PRODUCT UPDATE Issue 4 2023 Power Electronics Europe www.power-mag.com electronic control units (ECUs) and sensors for control. Rohm notes that Hall ICs are one of the most adopted sensor types, with an ability to detect position and motor rotation in a non-contact manner that reduces the wear and tear suffered with mechanical switches. In addition, they are also compact and can be equipped with protection circuits. Rohm explains that it has combined its Hall IC expertise, gained serving the mobile and consumer sectors, with original high withstand voltage processes. The resulting BD5310xG-CZ / BD5410xG-CZ series feature what is claimed to be an industry-leading 42V withstand voltage that enables direct connection to a primary (12V battery) power supply. This helps to improve reliability under battery power, which can fluctuate rapidly depending on the operating conditions. The wide operating supply voltage range of 2.7V to 38V enables support for a variety of applications for comfort and safety, including door locks, seat position, power windows. The internal topology also reduces power consumption by approximately 20% compared with general products, to achieve an industry-leading current consumption of 1.9mA, claims Rohm. Both series comply with the AEC-Q100 (Grade 1) automotive reliability standard while incorporating multiple protection circuits required for vehicle systems. The BD5310xG-CZ series is a unipolar detection type and the BD5410xGCZ series provides latch-type detection. There are 11 models in total, available in detection magnetic flux densities ranging from 2.0mT to 28.0mT. Unipolar detection can be used for detecting position in applications such as door open/close and door locks, whereas latch detection is suitable for rotation detection in various motors used in windows and sliding doors. Digital non-isolated IBC has 4:1 conversion ratio The non-isolated DC/DC converter has a fixed 4:1 down conversion ratio and provides 800W continuous, 1.5kW peak output from an industry standard package, measuring just 23.4 x 17.8 x 9.6mm. Input range is 38 to 60V DC (68V DC peak) for an output of 9.5 to 15V DC. The BMR314 is targeted at applications such as powering point of load (PoL) converters in AI and datacomms centres where high peak loads can occur and where space is at a premium but energy saving is important. The converter has high efficiency of 97.4% peak in a low profile package optimised for cold wall cooling. Up to 70A output current is available and the device is protected against over-temperature, input under-voltage and output overcurrent, over-voltage and short circuits. Control and monitoring are provided through a PMBus interface and MTBF is 7.47 million hours according to Telcordia SR-332 Issue 4 Method 1 at 40°C. Operating temperature range is -20°C and 125°C for a specified hot spot location. There is a timed warning and shutdown with over-temperature to minimise stress, particularly under peak loading conditions. The DC/DC converter is available as a surface mount device with LGA terminations and meets the safety requirements of IEC/EN/UL 62368-1 for non-isolated converters and meets ‘Class B’ conducted EMI limits to standards EN 55032/CISPR 32/FCC part 15J with a simple external filter. It is supported by the company’s Flex Power Designer software tool for configuration, performance simulation and monitoring. BMR314 is now available for sampling and is planned to go into volume production in Q4 2023. Littelfuse unveils first automotive grade P-channel MOSFET The P-channel power MOSFET has low conduction loss and a maximum on-state resistance of 4.2Ω. It offers reduced power dissipation, decreasing heat generation and improving efficiency in the end applications. It also has a low gate charge of 11.9nC, for fast and efficient switching operation. The MOSFET is rugged and has dynamic dv/dt and avalanche rating in order to withstand harsh conditions of automotive applications which require durability and reliability. The IXTY2P50PA saves PCB space with a miniature TO-252 (DPAK) footprint in surface mount form factor. This allows for compact designs in applications such as automotive ECUs, sensor circuits, high side switches, push-pull amplifiers, automatic test equipment and current regulators, advises Littelfuse. The automotive grade PolarP P-Channel Power MOSFET is available in reel packaging of 2500 pieces. Samples can be requested through authorised Littelfuse distributors worldwide. Low profile power supply meets industrial automation needs The company has added a 3000W AC/DC enclosed power supply with an adjustable output voltage from 100 to 350V DC. The ETA3000BC is intended for industrial applications requiring a fast output voltage response and integrates Cosel’s digital microprocessor technology. Active current sharing facilitates paralleling up to 10 units for extra power or redundancy. There is also an active filter for efficiency and the phase shift, full bridge topology offers efficiency up to 93%. The high response speed to adjustments of the output voltage across the full range is particularly suitable for demanding industrial applications. Industrial applications such as laser, plasma processing and industrial heating require the output voltage of power supplies to adjust rapidly within 100 to 350V DC in less than two milliseconds to provide an accurate voltage to the emitting element. This requires very tight, specific power control. The FETA3000BC’s response time across the full output voltage range is just 1.5ms. With an input voltage range of 170 to 264V AC, the power supply delivers a
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