Data Center GaN Applications: AC/DC Power Conversion

AC/DC Power Conversion
GaN Increases Power Density and Lowers Cost

The expansion of applications such as cloud computing, wearables, machine learning, autonomous driving, and IoT drive towards an even more data-intensive world, increasing demands on data centers and power consumption. The importance of efficiency, power density, and cost of the AC to DC switching power supply is driving solutions to GaN FETs to yield ultra-high efficiency power factor correction (PFC) front-end rectifier solutions.

Totem Pole PFC is becoming common for data center power supply due to Titanium 80+ efficiency requirements accelerating the trend for the highest power density. The fast-switching capability of GaN technology increases the power density without compromising efficiency for PFC designs.

GaN FETs and ICs also increase efficiency and reduce size for the DC-DC stage following the PFC that converts the 400 V bus voltage to 48 V or 12 V. In the secondary side, the synchronous rectification circuit, GaN FETs can offer lower gate driver and conduction losses, zero reverse recovery (QRR), higher switching frequency, and are up to 1/15th of the size of MOSFET solutions. GaN FETs parallel better than their silicon counterparts for higher power and reliability. GaN FETs and ICs also offer outstanding thermal performance.

GaN DC-DC Data Center

Reference Designs

Data Center AC/DC Reference Designs

Part Number Description VIN VOUT lOUT
(A)		 FSW
(kHz)		 Featured Product  
PMP20978 Demonstration Board
 PMP209781 kW Resonant Converter with GaN Sync Rectification390 V48 V21 A EPC2033 Contact TI

EPC’s application team is constantly working on new reference designs. If there is a requirement not met by the listed boards, please contact us via Ask a GaN Expert to discuss your application further.

Half-bridge development boards are available for quick evaluation of most eGaN FETs and ICs.

Products

Recommended Devices for Data Center AC/DC Conversion

Part Number Status Configuration VDS
max		 VGS
max		 max
RDS(on)
(mΩ)
@5VGS		 QG
typ
(nC)		 QGS
typ
(nC)		 QGD
typ
(nC)		 QOSS
typ
(nC)		 ID (A) Pulsed ID
(A)		 Package
(mm)
EPC2055 Preferred Single 40 6 3.6 6.6 2.3 0.7 13 29 161 LGA 2.5 x 1.5 Buy Now
EPC2067 Preferred Single 40 6 1.55 17.1 5.3 2 37 69 409 LGA 3.25 x 2.85 Buy Now
EPC2066 Preferred Single 40 6 1.1 25 8.9 3.2 59 90 639 LGA 6.05 x 2.3 Buy Now
EPC2206 Preferred Single AEC 80 6 2.2 15 4.1 3 72 90 390 LGA 6.05 x 2.3 Buy Now
EPC2044 Preferred Single 100 6 10.5 4.3 1.3 0.5 15 9.4 89 BGA 2.15 x 1.25 Buy Now
EPC2204 Preferred Single 100 6 6 5.7 1.8 0.8 25 29 125 LGA 2.5 x 1.5 Buy Now
EPC2088 Preferred Single 100 6 3.2 12.5 4.4 1.4 47 60 231 LGA 3.5 x 1.95 Buy Now
EPC2308 Engr Single 150 6 6 10.6 3.8 1.4 50 48 157 QFN 3 x 5 Buy Now
EPC2059 Preferred Single 170 6 9 5.7 1.3 0.9 35 24 102 LGA 2.8 x 1.4 Buy Now
EPC2207 Preferred Single 200 6 22 4.5 1.3 0.7 23 14 54 LGA 2.8 x 0.925 Buy Now
EPC2307 Engr Single 200 6 10 10.6 3.8 1.3 58 48 130 QFN 3 x 5 Buy Now
EPC2215 Preferred Single 200 6 8 13.6 3.3 2.1 69 32 162 LGA 4.6 x 1.6 Buy Now
EPC2304 Engr Single 200 6 5 21 7.5 2.6 115 102 260 QFN 3 x 5 Buy Now
EPC2050 Preferred Single 350 6 80 2.8 1.3 0.3 35 6.3 26 BGA 1.95 x 1.95 Buy Now
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