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User’s Guide

BM2P134E-EVK-001

No. 63UG097E Rev.001

Feb.2021

Design Reference of Transformer

Manufacturer:

Wurth.

Bobbin:

EE20/10/6 (Vertical)

Core:

EE20/10/6

TERM. NO. s FOR REF. ONLY

PART MUST INSERT FULLY TO

SURFACE A IN RECOMMENDED GRID

.028 SQ.(10)

[.70]

.996 MAX.

[25.30]

.138/.157 *

[3.50/4.00]

-A-

.894 MAX

[22.70]

LOT CODE & DATE CODE

DOT LOCATES TERM. #1

.575 MAX.

[14.60]

.400

[10.16]

Ø 0.063(10)

[1.60]

.150(8)

[3.80]

RECOMMENDED

P>C PATTERN, COMPONENT SIDE

Figure 4. Bobbin diagram

Figure 5. Winding structure diagram

Table 4. Wurth Transformer Winding Specification

Coil

Terminal

Turns

Wire

Winding Method

NP1

3-2

1 X1UEW 0.25 mm

1 Layer Space

NS1

10-8

1 X1TIW 0.55 mm

1 Layer Space

4-5

1 X1UEW 0.18 mm

1 Layer Space

NS2

9-7

1 X TIW 0.55 mm

1 Layer Space

NP2

2-1

1 X1UEW 0.25 mm

1 Layer Space

Inductance (LP):

397 μH ± 10 %

Leakage Inductance:

20 μH Max

Withstand Voltage:

Pri - Sec AC3000 V

Pri - Core AC1800 V

Sec - Core AC1800 V

Insulation resistance:

100 MΩ over (DC500 V)

TAPE

BOBBIN

AUXILLARY (ND)

PRIMARY (NP1)

SECONDARY(NS1)

SECONDARY(NS2)

PRIMARY (NP2)

TAPE

NP2

NP1

NS2

NS1

EE20/10/6

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