PFC coil specification

AN2521

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PFC coil specification

7.1

General description and characteristics

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Application type: consumer, home appliance

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Inductor type: open

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Coil former: vertical type, 5+3 pins

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Max. temp. rise: 45 °C

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Max. operating ambient temp.: 60 °C

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Mains insulation: N.A.

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Unit finishing: varnished

7.2

Electrical characteristics

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Converter topology: boost, transition mode

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Core type: CQ25 - PC47

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Minimum operating frequency: 20 kHz

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Typical operating frequency: 400 µH ±10% @1 kHz - 0.25 V (see Note: 1)

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Note:

1

Measured between pins #5 and #6

7.3

Electrical schematic and winding characteristics

Figure 31.

Electrical diagram

Table 9.

Winding characteristics

PINS

Winding

RMS current

Number of

turns

Wire

type

8 - 3

1.

Aux winding is wound on coil former before primary winding. To be insulate with a layer of polyester tape.

5 spaced

Ø 0.28 mm

5 - 6

2.

Primary winding external insulation: 2 layers of polyester tape

50

Multi stranded #10 x Ø 0.20 mm

5

6

PRIM.

AUX

8

3