AN3276

Doc ID 17975 Rev 1

13/22

2.3

Table 1 summarizes the maximum voltage across each semiconductor versus the phases.

Moreover, its recovery current should be optimized to avoid an higher current in the power

sustain average currents of 5 to 8 A (depending on the application) and a repetitive reverse

2.4

time td1 and td2 shown in Figure 7 should be always positive. According to the typical CCM

and

turn-on dI/dt at its maximum operating junction condition.

Table 1.

Maximum

voltages

Phases

Waveform expression

NO

YES

NO

NO

OUT

1

2

1

max

mainsRMS

V

m

1

)

m

(m

2

V

+

+

+

⋅

⋅

OUT

2

2

1

OUT

max

mainsRMS

V

m

1

)

m

(m

)

V

2

(V

+

+

+

⋅

−

⋅

V

max

P

2

max

V

-

V

max

V

F

L

V

max

P

m

OUT

IN

mainsRMS

OUT

2

mainsRMS

s

OUT

IN

2

⋅

⋅

−

⋅

⋅

⋅

⋅

>

⋅

()

()

2

max

V

V

2

max

V

F

V

L

max

I

m

1

m

mains

OUT

mains

s

OUT

RM

2

1

⋅

−

⋅

⋅

⋅

⋅

⋅

⋅

+

>