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DC-DC “brick” converters are familiar to many engineers, and have wide usage in telecommunications, networking, data centers, and many other applications. This is due in large part to adoption of a common footprint defined by the Distributed-power Open Standards Alliance (DOSA) and generally accepted input/output voltage ranges. These converters provide isolation and voltage step-down, and have become increasingly sophisticated, with features that enable advanced system optimization and control.
November 23, 2015
By: John Glaser
Alex Lidow of EPC shows the latest GaN-enabled wireless power tech at APEC 2015.
Power Systems Design
March 19, 2015
EPC9115 DC-DC bus converter showcases superior performance achieved using eGaN FETS with designated drivers in a conventional fully regulated, isolated eighth brick DC-DC converter topology.
EL SEGUNDO, Calif. — March 2015 — Efficient Power Conversion Corporation (EPC) introduces the EPC9115, a demonstration design for a 12 V, 42 A output with an input range of 48 V to 60 V. The demonstration board features enhancement-mode (eGaN®) power transistors – the EPC2020 (60 V) and EPC2021 (80V) – along with the LM5113 half-bridge driver and UCC27611 low side driver from Texas Instruments. The power stage is a conventional hard-switched 300 kHz isolated buck converter.
At the IEEE APEC 2015 power electronics industry conference, EPC applications experts will make eight technical presentations on GaN FET technology and applications showing the superiority of GaN transistors compared to silicon power MOSFETs.
In this article, we show that using GaN Transistors such as Efficient Power Conversion’s eGaN® FETs can improve the efficiency of isolated eighth brick DC-DC converters. This type of power converters is used extensively in mainframes, servers and telecommunication systems, and is available in a variety of sizes, output power capability, and input and output voltage ranges. Its modularity, power density, reliability and versatility have simplified the isolated power supply market.
By Johan Strydom, Ph.D., Vice President of Applications, EPC
Bodo’s Power Systems
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EPC9102 showcases the performance that can be achieved using the EPC2001 eGaN FETs and the LM5113 eGaN FET driver from Texas Instruments
EL SEGUNDO, Calif.—May, 2012 — Efficient Power Conversion Corporation (EPC) introduces the EPC9102, a fully functional eighth brick converter. This board is a 36 V – 60 V input to 12 V output, 375 kHz phase-shifted full bridge (PSFB) eighth brick converter with 17 A maximum output current. The EPC9102 uses the 100 V EPC2001 eGaN FETs in conjunction with the recently introduced LM5113 100V half-bridge gate driver from Texas Instruments. The LM5113 is the industry’s first driver to optimally drive and fully release the benefits of enhancement mode gallium nitride FETs. The EPC9102 demonstrates the performance capabilities of high switching frequency eGaN FETs when coupled with this eGaN driver.