AN2649

Booster diode

13/20

Table 2 gives the energy losses at turn-on and turn-off versus Vin.

Figure 16.

Turn-off switch (with SiC diode) -

Vin = 88 Vac

Figure 17.

Turn-off switch (with SiC diode) -

Vin = 110 Vac

Figure 18.

Turn-off switch (with SiC diode) -

Vin = 220 Vac

Figure 19.

Turn-off switch (with SiC diode) -

Vin = 264 Vac

Table 2.

MOSFET energy losses using Si diode

Vin [Vac]

Eon [uJ]

Eoff [uJ]

88

37.3

4.7

110

26.7

4.6

220

12.82

5.1

264

13.77

5.3