AN2393 datasheet(30/35 Pages) STMICROELECTRONICS

Part #	AN2393

Description	Reference design: wide range 200W L6599-based

PDF	35 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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30 / 35 page

Auxiliary flyback power transformer

AN2393

30/35

Auxiliary flyback power transformer

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Application type: Consumer, home appliance

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Transformer type: Open

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Winding type: Layer

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Coil former: Horizontal type, 4+5 pins

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Maximum temperature rise: 45° C

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Maximum operating ambient temperature: 60° C

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Mains insulation: Complies with EN60065 specifications

8.1

Electrical characteristics

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Converter topology: Flyback, DCM/CCM mode

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Core type: E20-N67 or equivalent

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Operating frequency: 60 kHz

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Primary inductance: 4.20 mH

±10% @1 kHz - 0.25 V (see Note 1)

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Leakage inductance: 50 µH MAX @100 kHz - 0.25 V (see Note 2)

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Maximum peak primary current: 0.38 Apk

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RMS primary current: 0.2 ARMS

Note:

Measured between Pins 4 and 5

Measured between Pins 4 and 5 with all secondary windings shorted

Figure 25.

Auxiliary transformer electrical diagram

+5V

Primary

+3.3V

Auxliary

AN2393 Datasheet(PDF) 30 Page - STMicroelectronics

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