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STMicroelectronics’ 50W GaN Converter Allows Excessive-Effectivity Energy Designs in Shopper and Industrial Purposes
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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 package deal. The pace of the built-in GaN transistor permits a excessive switching frequency with a small and light-weight flyback transformer. Minimal further exterior elements are wanted to design a sophisticated, high-efficiency switched-mode energy provide (SMPS).
The VIPerGaN50 helps designers leverage GaN wide-bandgap know-how to satisfy more and more stringent ecodesign codes that concentrate on world vitality financial savings and net-zero carbon emissions. It’s suited to shopper and industrial functions resembling energy adapters, USB-PD chargers, and energy provides for dwelling 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 diminished load, valley skipping limits switching losses and leverages ST’s proprietary valley lock to stop audible noise. Frequency foldback with zero-voltage switching ensures the best potential effectivity at gentle load, with adaptive burst mode operation to attenuate losses at a really low load. As well as, superior energy administration cuts standby energy to beneath 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 also be offered, 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 obtainable in a 5mm x 6mm QFN package deal, from $2.30 for orders of 1000 items. The gadget is in a free-sample program and will be ordered on ST eSTore.
For extra data, please go to www.st.com/vipergan
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