By Steve Bush 11th May 2022
Efficient Power Conversion has introduced a 1.7mΩ (typ) 100V 10.2mm2 footprint enhancement-mode GaN transistor.
THe chip-scale part, named EPC2071, it from the company’s fifth GaN hemt generation and, compared with its fourth generation, gives the EPC2071 the same on-resistance as the prior generation with 26% smaller size according to the company, which sees it switching at 1MHz and beyond in the primary side of LLC dc-dc converter that take 40 – 60V and produce 12 – 5V, in servers and telecoms applications for example.
It also foresees use driving brushless dc motors in e-bikes, e-scooter, robots, drones and power tools, where small size and the potential to reduce deadtime to 20ns is claimed.
A development kit, EPC9174, is a 1.2kW 1MHz 48Vin 12Vout LLC converter with EPC2071 in the primary side full bridge occupying 22.9 x 58.4 x 10mm (1,472W/in3). Peak efficiency is 97.3% at 550W, and the full load (12V 100A) efficiency is 96.3%.
Both EPC2071 and the demo board are available from Digi-Key.
EPC can be found at PCIM Europe on stand 113 in Hall 9 at PCIM this week.
Tagged with: dc-dc EPC GaN PCIM
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