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50W GaN Converter Permits Excessive-Effectivity Energy Designs
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The STMicroelectronics VIPerGaN50
With its single-switch topology and excessive integration, together with current-sensing and safety circuitry additionally built-in, the VIPerGaN50 is available in a compact and low-cost 5mm x 6mm bundle. The pace of the built-in GaN transistor permits a excessive switching frequency with a small and light-weight flyback transformer. Minimal further exterior parts are wanted to design a sophisticated, high-efficiency switched-mode energy provide (SMPS).
The VIPerGaN50 helps designers leverage GaN wide-bandgap know-how to fulfill more and more stringent ecodesign codes that focus on international power financial savings and net-zero carbon emissions. It’s suited to client and industrial functions reminiscent of energy adapters, USB-PD chargers, and energy provides for residence home equipment, air conditioners, LED-lighting gear, and sensible meters.
The converter operates in a number of modes to maximise effectivity in any respect line and cargo circumstances. At heavy load, quasi-resonant (QR) operation with zero-voltage switching minimizes turn-on losses and electromagnetic emissions (EMI). At lowered load, valley skipping limits switching losses and leverages ST’s proprietary valley lock to forestall audible noise. Frequency foldback with zero-voltage switching ensures the very best doable effectivity at gentle load, with adaptive burst mode operation to attenuate losses at very low load. As well as, superior energy administration cuts standby energy to under 30mW.
Constructed-in options guarantee security and reliability, together with output over-voltage safety, brown-in and brown-out safety, and enter over-voltage safety. Enter-voltage feedforward compensation can be supplied, to attenuate output peak-power variation, in addition to embedded thermal shutdown, and frequency jittering to attenuate EMI.
The VIPerGaN50 is in manufacturing now and accessible in a 5mm x 6mm QFN bundle, from $2.30 for orders of 1000 items. The system is in a free-sample program and could be ordered on ST eSTore.
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