AN2842 datasheet(18/22 Pages) STMICROELECTRONICS

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AN2842 Datasheet(PDF) 18 Page - STMicroelectronics

Part #	AN2842

Description	Paralleling of power MOSFETs in PFC topology

PDF	22 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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18 / 22 page

Approach to the study

AN2842

18/22

Doc ID 15110 Rev 1

Figure 21. gfs curves for devices with comparable gfs values

Figure 22. gfs curves for devices with different gfs values

Figure 21 and Figure 22 refer to the transfer characteristics of two pair of devices, while in

Figure 23 and Figure 24, we can observe the relative waveforms. A large current imbalance

can be seen if there is a big difference in the transfer characteristics. Thus, the gfs

parameter is also responsible for the current imbalance both during turn-on and turn-off

operations.

AM01560v1

AM01561v1

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