DAP005

Application information

25/39

Design data

Vin1 := 88V

Vo1:= 200V

Vin2 := 264V

Vo2:= 385V

Vox ;= 400V

∆Vo ;= 40V

Step 1

choose: Vinx: = 270V

Step 2

Step 3

Step 4

Vin

clamp:

Vox

Vo

1

–

Vo

2

Vo

1

–

--------------------------- Vin

2

⋅

=

Vox

Vo

2

–

Vo

2

Vo

1

–

--------------------------- Vin

1

⋅

–

Vinclamp = 278.27V

k:

3

2Vin

x

⋅

-----------------------

=

k = 7.857 x 10-3

R1:

Vo

∆

20

----------- 10

6

⋅

=

R1 = 2 x 106

Ω

R2:

2.5 R1

Vin

2

Vin

1

–

Vo

1

2.5

–

() Vin

2

Vo

2

2.5

–

() Vin

1

⋅

–

⋅

--------------------------------------------------------------------------------------------------

⋅

⋅

=

R2 = 4.762 x 104

Ω

R

T:k

2 R1

Vin

2

Vin

1

–

Vo

2

Vo

1

–

------------------------------

⋅⋅

⋅

=

RT = 2.114 x 10

4

Ω