AN3152

List of figures

Doc ID 17056 Rev 1

3/17

List of figures

Figure 1.

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2.

BOOST stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 3.

Power transformer and rectification stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 4.

BUCK current generator stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 5.

100 Hz bridge sync rectifier stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 6.

Efficiency vs. power output on BOOST stage @ Rg=8.2 Ω and di/dt = 1400 W . . . . . . . . . 9

Figure 7.

Figure 8.

Figure 9.

di/dt vs. gate resistance value @ total parasitic inductance of 110 nH on the power loop 12

Figure 10.

Figure 11.

Silicon vs. SiC diode comparison @ IF = 5 A, di/dt = 840 A/µs. . . . . . . . . . . . . . . . . . . . . . 14