AN4242 datasheet(23/26 Pages) STMICROELECTRONICS

Part #	AN4242

Description	New generation of 650 V SiC diodes

PDF	26 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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23 / 26 page

DocID024196 Rev 1

23/26

AN4242

Efficiency measurement

4.2

Example of efficiency measurements

Compared to the conventional ultrafast diode, using SiC diodes we can expect, an efficiency

gain of between 1% and 2%.

An example of efficiency measurements in a 480 W PFC at VIN = 115 V AC is presented in

Figure 20. The efficiency gain with the SiC diode compared to the conventional 600 V silicon

diodes reaches 1.2%.

Figure 20. Typical efficiency measurement in a 480 W PFC at VIN = 115 V,

Fsw = 100 kHz, dI/dt = 600 A/µs

New 8A 600V Tandem G2

New 6A 650V SiC G2

DCM mode

CCM mode

diode»50 °C

diode»120 °C

8 A, 600 V Turbo 2 diode

8 A, 600 V Tandem G1

6 A, 600 V SiC G1

Efﬁciency (%)

Load (%)

1020

5060

100

AN4242 Datasheet(PDF) 23 Page - STMicroelectronics