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EPC and Richtek introduce a reference design that achieves greater than 98% efficiency using the RT6190 buck boost controller and EPC2204 EPC GaN FETs
EL SEGUNDO, Calif.— January 2023 — EPC & Richtek announces the availability of a 4-switches bidirectional buck-boost controller reference design board that converts an input voltage of 12 V - 24 V to a regulated 5 V - 20 V output voltage and delivers up to 5 A continuous current and 6.5 A maximum current. The combination of the new Richtek RT6190 controller with ultra-efficient EPC2204 GaN FETs from EPC shrinks the solution size by greater than 20% compared to traditional solutions for high-power density applications. The solution achieves greater than 98% efficiency for 20 V and 12 V output voltage and can operate without heatsink with maximum rise temperature below 15 degC for 20 V to 5 V, and 55 degC for 12 V to 20 V, at 5 A continuous current.
The EPC2050 from Efficient Power Conversion is an Enhancement Mode GaN Power Transistor. It has a drain-source voltage of over 350 V, a drain-source on-resistance of 55 milliohms, and a gate threshold voltage of 1.3 V.