AN2761

List of figures

Doc ID 14690 Rev 2

3/36

List of figures

Figure 1.

L6562A PFC controller in an SMPS architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2.

Boost converter circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 3.

Inductor current waveform and MOSFET timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 4.

Switching frequency fixing the line voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 5.

Transition angle versus input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 6.

Capacitive losses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 7.

Conduction losses and total losses in the STP8NM50 MOSFET for the 80W TM PFC . . . 17

Figure 8.

L6562A internal schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 9.

Bode plot - open-loop transfer function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 10.

Bode plot - phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 11.

Multiplier characteristics family . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 12.

Optimum MOSFET turn-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 13.

Excel spreadsheet design specification input table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 14.

Other design data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 15.

Excel spreadsheet TM PFC schematic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 16.

Excel spreadsheet BOM - 80 W TM PFC based on L6562A . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 17.

EVL6562A-TM-80W demonstration board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 18.

Wide range 80W demonstration board electrical circuit (EVL6562A-TM-80W) . . . . . . . . . 27

Figure 19.

EVL6562A-TM-80W compliance to EN61000-3-2 standard . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 20.

EVL6562A-TM-80W compliance to JEIDA-MITI standard . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 21.

EVL6562A-TM-80W power factor vs. Vin and load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 22.

EVL6562A-TM-80W THD vs. Vin and load. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 23.

EVL6562A-TM-80W efficiency vs. Vin and load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 24.

EVL6562A-TM-80W static Vout regulation vs. Vin and load . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 25.

EVL6562A-TM-80W input current at 100 V-50 Hz - 80 W load . . . . . . . . . . . . . . . . . . . . . 31

Figure 26.

EVL6562A-TM-80W input current at 230 V-50 Hz - 80 W load . . . . . . . . . . . . . . . . . . . . . 31

Figure 27.

EVL6562A-TM-80W input current at 100 V-50 Hz - 40 W load . . . . . . . . . . . . . . . . . . . . . 31

Figure 28.

EVL6562A-TM-80W input current at 230 V-50 Hz - 40 W load . . . . . . . . . . . . . . . . . . . . . 31

Figure 29.

EVL6562A-TM-80W input current at 100 V-50 Hz - 20 W load . . . . . . . . . . . . . . . . . . . . . 32

Figure 30.

EVL6562A-TM-80W input current at 230 V-50 Hz - 20 W load . . . . . . . . . . . . . . . . . . . . . 32