7MHz GaN FETs with integrated gate drivers reduce size and cost

March 08, 2018 // By Nick Flaherty
Efficient Power Conversion has launched two enhancement-mode monolithic GaN power transistor products with integrated drivers.

The EPC2112 is a 200 V, 40-mΩ eGaN FET plus integrated gate driver. In comparison, the EPC2115 is an integrated circuit with dual 150 V, 70-mΩ eGaN FETs plus gate drivers. Both products are capable of operating up to 7 MHz and are available in low inductance, extremely small, 2.9 mm x 1.1 mm BGA surface-mount passivated die.

The monolithic ICs enable designers to improve efficiency, save space, and lower costs compared to silicon-based solutions. The ultra-low capacitance and zero reverse recovery of eGaN FETs enable efficient operation in many topologies.

In both products, the integrated driver is specifically matched to the eGaN device to yield optimal performance under various operating conditions. Performance is further enhanced due to the small, low inductance footprint. Monolithic integration eliminates interconnect inductances for higher efficiency at high frequency. This is especially important for high frequency applications such as resonant wireless power, and high frequency DC-DC conversion.

As design examples for these new ICs, two differential class-E amplifier development boards are available for order. The EPC9089 is an AirFuel Alliance compatible class 4 (33 W) and uses the EPC2112. The EPC9088 is a class 3 (16 W) amplifier using the EPC2115.

The EPC2112 is also featured in a new demonstration board, the EPC9131, for a 300 kHz SEPIC converter low voltage DC-DC application.

The EPC2112 monolithic integrated gate driver and GaN FET price for 1K units is $3.29 each and the EPC2115 integrated gate driver with dual GaN FETs price for 1K units is $3.44 each.

The EPC9088 and EPC9089 development boards are price at $158.13 and $159.13, respectively. The EPC9131 is priced at $215.62

www.epc-co.com


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