page

date

DESCRIPTION: chassis mount dc-dc converter

10 of 11

08/2009

20050

phone

phone 503.612.2300 fax

www.v-infinity.com

fax 503.612.2383

PART NUMBER: VHK50W

note: The recommended components are a starting point but not guaranteed for meeting these EMI requirements. More or less

filtering may be required for a specific application or to meet other EMI standards, e.g.MIL-STD-461

C6

C7

C4

C5

DC/DC Converter

CASE

+Vo

-Vo

+Vin

C1

-Vin

L2

C3

C2

L1

Note:

Model No.

C1

C2

C3

C4

C5

C6

C7

L1

L2

VHK50W-Q24-S28

100uF/50V KY

100uF/50V KY

NC NC 1000pF/2KV

NC

NC

0.12mH

0.34mH

VHK50W-Q48-S28 100uF/100V KY 100uF/100V KY NC NC 1000pF/2KV

NC

NC

0.12mH

0.34mH

C5

C4

CASE

FUSE

TVS

+Vo

-Vo

+Vin

C1

-Vin

L2

C6

C3

C2

L1

EMI to meet class A

EMI to meet class B

C1

C2

C3

C4

C5

C6

L1

L2

VHK50W-Q24-S48

100uF/50V

ESR<0.33Ω

100uF/50V

ESR<0.33Ω

NC

NC

NC

NC

NC

Short

3.5uH

C1

C2

C3

C4

C5

C6

L1

L2

VHK50W-Q48-S48

47uF/100V

KMF

47uF/100V

KMF

2200pF/2KV

NC

NC

Short 3.5uH

VHK50W-Q24-S48

10uF/50V

X7R,2220

Ceramic

100uF/50V

ESR<0.33Ω

100uF/50V

ESR<0.33Ω

4700pF/2KV 2200pF/2KV 1000pF/2KV 1.5mH 3.4uH

VHK50W-Q48-S48

47uF/100V

KMF

47uF/100V

KMF

47uF/100V

KMF

4700pF/2KV 2200pF/2KV 1000pF/2KV 1.5mH 3.4uH

FIGURE 10.3. EMI FILTER FOR VHK50W, 48 V

FIGURE 10.2B. EMI FILTER FOR VHK50W, 28 V (CLASS B)