With USB Power Delivery in mind, EPC has designed a 180W GaN dc-dc converter evaluation board. Its two-phase power section occupies only 24 x 24mm, using both sides of the board and ignoring input and output bulk capacitors. Called EPC91109 and intended to implement USB-PD 3.1, it delivers 12, 16 or 20V from an input range of 20 to 36V. ...
Renesas has introduced three 650V GaN power transistors, aimed at server power supplies and e-mobility chargers. “Designed for multi-kilowatt-class applications, these devices combine GaN technology with a silicon-compatible gate drive input,” according to the company. “Offered in TOLT, TO-247 and TOLL package options, the devices give engineers the flexibility to customize their thermal management and board design.” The result of ...
Microchip has introduced a 15W radiation-rated dc-dc converter for space use. Intended to be fed from a satallite’s 28V bus (22V to 42V, 50V abs max), SA15-5-5T has three isolated 5V 1A outputs that can be paralleled for more current or connected in series for higher voltages. Output ripple is <1%, and operation is over-55 to 125°C, with de-rating above ...
Wise Integration has released its GaN PFC (power factor correction) controller chip to production. WIW1101 is based on a 32bit MCU, said the company, and is specifically for totem pole PFCs operating in critical conduction mode (CrCM), switching at up to 2MHz and delivering between 100W and 1.5kW. Its proprietary internal algorithm “enables ZVS [zero voltage switching] across all power ...
Electronics Weekly
