AN2432 datasheet(25/27 Pages) STMICROELECTRONICS

Part #	AN2432

Description	This document describes a 60W adapter application using

PDF	27 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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25 / 27 page

Transformer specification

AN2432

25/27

Figure 31.

Windings position

Note:

Primaries A and B are in series.

Note:

Cover primary and auxiliary wire ends with silicon sleeve.

8.2

Mechanical aspect

●

Maximum height from PCB: 35 mm

●

Coil former type: horizontal, 7+7 pins (Pins #2 and #8 removed)

●

Pins pitch: 5.08 mm

●

Rows distance: 25.4 mm

●

Pins #2 and #8 removed

●

External copper shield: 12 mm width

Table 12.

Winding characteristics

Pins

Winding

RMS current

Number of turns

Wire type

3 – 2

PRIMARY - A

1.06 ARMS

G2 – 2 x

φ 0.45 mm

12, 13 – 9, 10

SECONDARY

7.4 ARMS

G2 – 60 x

φ 0.18 mm

2 – 1

PRIMARY - B

1.06 ARMS

G2– 2 x

φ 0.45 mm

6 – 7

AUX

0.05 ARMS

12 Spaced

G2 –

φ 0.25 mm

COIL FORMER

INSULATING

TAPE

SECONDARY

PRIMARY - A

PRIMARY - B

AUX

3mm

coil former

insulating

tape

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