“The new device is fabricated using our PowiGaN technology. It’s a proprietary process from PI that allows us to do very efficient power conversion,” explained Andy Smith, Director of Training at Power Integrations. “We’re marrying it with our InnoMux-2 technology, which is the ability to deliver multiple outputs with a single-stage converter both efficiently and accurately.”

The technology incorporates the 1700 V GaN switch with multi-output regulation, the company’s FluxLink digital isolation technology, and secondary-side zero voltage switching.

A key technical feature is the switch’s efficiency levels at higher voltages. Testing demonstrated consistent performance across voltage ranges. “We took one board and swapped the power IC between them… and look at that, the efficiency is pretty close to identical, which is astounding,” said Smith.

The 1700 V InnoMux-2 IC easily supports 1000 VDC nominal input voltage in a flyback configuration and achieves over 90 percent efficiency in applications requiring one, two, or three supply voltages. Each output is regulated within one percent accuracy, eliminating post regulators and improving system efficiency further by approximately ten percent. The new device replaces expensive silicon carbide (SiC) transistors in power supply applications such as automotive chargers, solar inverters, three-phase meters, and a wide variety of industrial power systems.

Smith continues, “We are able to build a 1700 V GaN transistor. Nobody else is, and the reason for that is the proprietary technology we use for our GaN.” The economics are also notable, with Smith adding that “GaN transistors are somewhere approaching the cost of silicon to manufacture. In fact, in the long term, GaN and silicon prices will probably converge.”

The market timing appears favorable. According to Ezgi Dogmus, Activity Manager at Yole Group, the power GaN device market is poised to reach $2 billion by the decade’s end.

The metering market presents an early opportunity. “Metering hits at that high voltage all day long. They have shorter design cycles than typically would be the case for an industrial application,” Smith explained, noting that “when they roll out energy meters, they tend to roll them out in large quantities, 20, 100,000 at a time.”

Radu Barsan, vice president of technology at Power Integrations, said, “Our rapid pace of GaN development has delivered three world-first voltage ratings in a span of less than two years: 900 V, 1250 V and now 1700 V. Our new InnoMux-2 ICs combine 1700 V GaN and three other recent innovations: independent, accurate, multi-output regulation; FluxLink, our secondary-side regulation (SSR) digital isolation communications technology; and zero voltage switching (ZVS) without an active-clamp, which all but eliminates switching losses.”

The InnoMux-2 with 1700V GaN technology is now available at $4.90 in 10,000-unit quantities. Power Integrations offers a reference design (RDR-1053) for a 60 W dual-output power supply to demonstrate the technology’s capabilities.

This development in power conversion technology could enable new options for high-voltage applications while balancing efficiency and cost considerations. As energy efficiency requirements evolve, technologies like this may contribute to meeting future power conversion needs.

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Vishay Intertechnology, Inc. introduced the industry’s first 1 Form A solid-state relay to offer AEC-Q102 qualification and a 100 V load voltage. Offered in the low profile SOP-4 package, the Vishay Semiconductors VORA1010M4 delivers the industry’s fastest turn-on and turn-off times of 0.1 ms typical, in addition to the highest operating temperature of +125 °C.

The fast turn-off time of the optically isolated device released today is a result of its integrated turn-off circuit, while its combination of a state-of-the-art infrared emitter and photovoltaic diode array delivers its fast turn-on time. This switching performance makes the solid-state relay ideal for safety-critical applications, while its compact SOP-4 package saves space over competing solutions in the DIP-4 package.

Offering an isolation voltage of 3750 VRMS, the Automotive Grade VORA1010M4 is designed to provide clean, bounce-free switching for glass dimming, lighting control, inverters, motor controls, and battery management systems (BMS) in electric (EV) and hybrid electric (HEV) vehicles; industrial motor drives and controls; security and automation systems; and telecom servers and data centers.

Available in tape-and-reel packing, the device is RoHS-compliant, halogen-free, and Vishay Green.

Samples and production quantities of the VORA1010M4 are available now, with lead times of eight weeks.

The post Solid-state relay switches 100 V in 0.1 ms appeared first on Power Electronic Tips.

Highlights include: 62 W continuous, 98 W peak output power; Elimination of two DC-DC converters, yielding a 30% reduction in PCB area compared to conventional two-stage designs; Thermally efficient IC package allowing PCB cooling without the need for heatsinks; Zero voltage switching ZVS without extra circuitry; SR-FET gate detection;

High-voltage InnoMux2-EP ICs incorporate a 750 V PowiGaN primary switch, ZVS (without an active clamp) and synchronous rectification. The advanced InnoMux-2 controller manages light-load power delivery, eliminating the need for pre-load resistors and reducing no-load consumption.

For multi-output power supplies up to 35 W that require multiple CC outputs for LED strings (computer monitors or appliances with display panels), consider the InnoMux2-BL IC family.

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