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EPC Announces 15MHz Half-Bridge Demo Boards

eGaN FET boards demonstrate reduced losses at high frequency

EPC has introduced the EPC9066, EPC9067, and EPC9068 15MHz Half-Bridge development boards, which are configurable to a buck converter or as a ZVS class-D amplifier.

These boards are said to provide an easy-to-use way for power systems designers to evaluate the performance of GaN transistors, enabling the designers to get their products into volume production quickly.

All three boards feature a zero reverse recovery (QRR) synchronous bootstrap rectifier augmented gate driver to increase efficiency at high frequency operation, up to 15MHz. The boards can produce a maximum output of 2.7A in the buck and ZVS class-D amplifier configurations. Loss reduction is realised across the entire current range.

The EPC9066/67/68 feature 40V, 65V, and 100V-rated eGaN FETs respectively. These boards are 2in x 1.5in and are laid out in a half-bridge configuration. Each board uses the Texas Instruments LM5113 gate driver with supply and bypass capacitors.

The gate driver has been configured with a synchronous FET bootstrap circuit featuring the 100V, 2800mΩ EPC2038 eGaN FET, which eliminates the driver losses induced by the reverse recovery of the internal bootstrap diode.

The boards have various probe points and Kelvin measurement points for DC input and output. In addition, the boards provide the capability to install a heat sink for high power operation.



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