AN2690 datasheet(28/31 Pages) STMICROELECTRONICS

tên linh kiện	AN2690

Giải thích chi tiết về linh kiện	This application note describes the characteristics and the features

PDF	31 Pages

Scroll/Zoom	100%

nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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28 / 31 page

Transformer specification

AN2690

28/31

Transformer specification

General description and characteristics

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Application type: consumer, home appliance

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Transformer type: open

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Winding type: ayer

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COIL former: horizontal type, 9+9 pins

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Max. temperature rise: 45 °C

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Max. operating ambient temp.: 60 °C

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Mains insulation: acc. with EN60950

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Unit finishing: varnishing

Electrical characteristics

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Converter topology: flyback, CCM/DCM mode

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Core type: EER34 - PC47

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Min. operating frequency: -

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Typical operating freq: 60 kHz

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Primary inductance: 550 µH ±10% at 1 kHz - 0.25 V (see Note: 1)

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Leakage inductance: 17 µH max at 100 kHz - 0.25 V (see Note: 2)

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Max. peak primary current: 2.65 Apk

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RMS primary current: 0.78 ARMS

Note:

Measured between pins (2, 3) - (5, 6)

Measured between pins (2, 3) - (5, 6) with all secondary windings shorted

Electrical diagram and winding characteristics

Figure 27.

Transformer electrical diagram

AUX

10-11

15-16

+19V

PRIM. A

PRIM. B

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