Melexis has qualified a pair of current sensors to UL/IEC 62368-1 for use where ‘reinforced isolation’ is mandated. “Until now, MLX91220 and MLX91221 had only been qualified as a basic, single barrier, isolation device, mandating the need for an engineer to incorporate extra elements like an isolation amplifier into their design,” according to the company. The UL/IEC 62368-1 certification (material ...
Toshiba is aiming at industrial programmable logic controllers with fast surface-mount photocouplers that have hysteresis in the signal path. They are amplified types with threshold detection and an open-drain output. Operation is across -40 to +125°C and the secondary side will run from between 2.7 and 5.5V, consuming ~1mA. Operation is specified at 3.3 and 5V. Input-referred hysteresis is typically ...
Recom has created a chassis-mount isolated dc-dc converter for nominal battery voltages from 24 to 90V. Called RMOD360-UW, it can deliver full power continuously with inputs between 27 and 106V, as well as 240W down to 18V, and it will deliver 360W from up to 126V for 10 minutes. Output is 24.5Vdc. A 300W relative, RMOD300-UW, comes in three versions ...
Allegro MicroSystems has created an isolated gate driver IC for GaN power transistors that has no need for high-side bootstrapping nor the provision of a secondary side drive supply voltage. Instead, a dc-dc converter within AHV85111 produces secondary-side dc power rails – one positive and one negative – to provide gate drive power from a 12V supply (10.8 – 13.2V) ...
Texas Instruments has added an analogue version of the non-optical replacement for digital opto-isolators it just revealed. Called ‘opto-emulators’, both analogue and digital versions replace the LED and photo-diode or photo-transistor within a conventional opto-isolator with an SiO2 barrier across which the a modulated version of the input signal is passed – probably magnetically (Electronics Weekly has requested clarification). The ...
Micsig Technology is aiming at mains and high-voltage GaN power supply development with a series of optical fibre isolated oscilloscope probes, with bandwidths up to 1GHz and risetimes down to ≤350ps. This kind of probe has no electrically-conductive path between probe tip and scope. Instead, the scope end of the probe and the probe’s head are linked by optical fibres, ...
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