5 March 2018
EPC9130 48V−12V regulated power supply development board delivers over 1250W per cubic inch and 96% efficiency
© Semiconductor Today Magazine / Juno PublishiPicture: Disco’s DAL7440 KABRA laser saw.
Efficient Power Conversion Corp (EPC) of El Segundo, CA, USA – which makes enhancement-mode gallium nitride on silicon (eGaN) power field-effect transistors (FETs) for power management applications – has introduced the EPC9130 48V−12V non-isolated, fully regulated development board.
With 12A per phase, the five-phase board has a maximum output current of 60A, making it capable of over 700W. The EPC9130 provides extremely high-power density, exceeding 1250W per cubic inch, and over 96% efficiency.
The EPC9130 development board’s five phases each use two 100V EPC2045 eGaN FETs in a half-bridge configuration with a uP1966A gate driver from uPI Semiconductor Corp. The pulse width modulation (PWM) signals to the gate drivers are fed by an onboard dsPIC33 microcontroller from Microchip Technology Inc. The board is said to contain all critical components and layout for optimal switching performance, with a bill of materials of less than $0.06 per Watt in volume.
Emerging computing applications demand more power in much smaller form factors, notes EPC. In addition to the expanding needs of the server market, some of the most challenging applications are multi-user gaming systems, autonomous cars, artificial intelligence, and cryptocurrency mining. The EPC9130 significantly improves the power density while reducing the size and cost of the 48V–12V DC-DC converters needed for these demanding applications.
“This DC-DC system has a power density greater than 1250W/in3 and an efficiency greater than 96%, both are records for this type of conversion,” claims CEO & co-founder Alex Lidow. “What really makes this solution compelling is that the cost of the components is less than $0.06 per watt, significantly lower than systems in production today,” he adds.
The EPC9130 is priced at $468 each and is available for delivery from distributor Digi-Key Corp. A Quick Start Guide (containing set-up procedures, circuit diagram, performance curve, and bill of material) is provided on-line. A video discussing the performance of the EPC9130 is available on EPC’s website.