Automotive GaN Application

Hybrid and Electric Powertrain 48 V

48 V/12 V Bi-Directional Power Distribution Systems:
GaN Increases Efficiency, Reduces Size and Weight, Lowers Cost

By 2025, one of every 10 vehicles sold worldwide will be a 48 V mild hybrid. 48 V systems boost fuel efficiency ~ 10-15% delivering 4X the power without increasing engine size, and carbon-dioxide emissions by 25%.The need for 48 V bus power distribution becomes increasingly evident with all the new power hungry electronically driven functions and features appearing on the latest cars. For example: Electric start-stop, electric steering, electric suspension, electric turbo-supercharging, variable speed air conditioning to name just a few.

With the emergence of autonomous vehicles, additional demands from systems such as lidar, radar, camera, and ultrasonic sensors, are placed upon the power distribution system. These require high performance graphic processors to gather, interpret, integrate, and to make sense of it all. These processors are very power hungry and put an additional burden on traditional automotive 12 V electrical distribution buses.

For 48 V bus systems, GaN technology increases the efficiency, shrinks the size, and reduces system cost.

GaN automotive power

Reference Designs

Automotive 48 V Reference Designs

  Part Number Description VIN VOUT lOUT
(A)
fSW Featured Product  
EPC9163 Demonstration Board
EPC9163 2 kW 48 V/12 V Bidirectional Power Module 20 V – 60 V (Buck)
11.3 V – 16 V (Boost)
5 V - 16 V (Buck)
20 V - 50 V (Boost)
140 A (Buck)
140 A (Boost input)
500 kHz EPC2218 Buy Now
EPC9165 Demonstration Board
EPC9165 2 kW 48 V/14 V, 140 Bidirectional Power Module 20 V – 60 V (Buck)
11.3 V – 16 V (Boost)
5 V - 16 V (Buck)
20 V - 50 V (Boost)
140 A (Buck)
140 A (Boost input)
500 kHz EPC2302 Buy Now
EPC9170 Demonstration Board
EPC9170 2 kW 48 V/14 V, 140 A Power Module20 V – 60 V (Buck)
11.3 V – 16 V (Boost)
5 V - 16 V (Buck)
20 V - 50 V (Boost)
140 V (Buck)
140 A (Boost)
500 kHzEPC23101
EPC2302
Buy Now
EPC9205 Demonstration Board
EPC9137 1.5 kW 48 V/12 V bidirectional power module 20 – 60 (Buck)
12 – 16 (Boost)
5 - 16 (Buck)
20 - 48 (Boost)
125 A (Buck)
29 A (Boost)
250 kHz EPC2206 Buy Now

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 AEC Devices for 48 V Power Distribution

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)
EPC2206 Preferred Single AEC 80 6 2.2 15 4.1 3 72 90 390 LGA 6.05 x 2.3 Buy Now
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Videos

3 Ways GaN is Driving Changes in Automotive Systems

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