Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833

603-778-2300 www.wallindustries.com Fax 603-778-9797

YFW15 Ultra Wide Series

Single and Dual Output

15 Watt DC/DC Converter

4:1 Wide Input Voltage Range

Rev B

MECHANICAL DRAWING

Unit: inches (mm)

PIN CONNECTION

PIN

SINGLE

DUAL

1

+INPUT

+INPUT

2

-INPUT

-INPUT

4

CTRL

CTRL

5

NO PIN

+OUTPUT

6

+OUTPUT

COMMON

7

-OUTPUT

-OUTPUT

8

TRIM

TRIM

EXTERNAL OUTPUT TRIMMING

Output can be externally trimmed by

using the method shown below.

( ) for dual output trim.

1.60 (40.6)

1. All dimensions in Inches (mm)

Tolerance: X.XX±0.02 (X.X±0.5)

X.XXX±0.01 (X.XX±0.25)

2. Pin pitch tolerance ±0.01 (0.25)

0.200 (5.08)

0.70 (17.8)

0.600 (15.24)

0.400

(10.16)

0.400

(10.16)

0.500

(12.70)

0.700 (17.78)

0.40

(10.2)

0.22 (5.6)

1

2

4

5

8

7

BOTTOM

VIEW

Recommended Filter for EN55022 Class B Compliance

+Vin

-Vin

+Vout

-Vout

L1

D/D Converter

C1

C4

C3

Load

C2

＋INPUT

－INPUT

1

2

3

4

The components used in the Figure 1 are as follows:

C1

C2

C3

C4

L1

YFW24xxx-xxxx 6.8µF/50V

N/A

1000pF/2KV 1000pF/2KV

450µH

Common Choke

YFW48xxx-xxxx 2.2µF/100V 2.2µF/100V 1000pF/2KV 1000pF/2KV

450µH

Common Choke

Recommended EN55022 Class B Filter Circuit Layout

YFW15

SERIES

FIGURE 1

FIGURE