AN3339 datasheet(38/44 Pages) STMICROELECTRONICS

38 / 44 page

Resonant power transformer specification

AN3339

38/44

Doc ID 18449 Rev 2

Resonant power transformer specification

General description and characteristics

●

Application type: consumer, home appliance

●

Transformer type: open

●

Coil former: horizontal type, 7+7 pins, two slots

●

Max. temp. rise: 45 °C

●

Max. operating ambient temperature: 60 °C

●

Mains insulation: acc. to EN60065

Electrical characteristics

●

Converter topology: half bridge, resonant

●

Core type: ETD34-PC44 or equivalent

●

Min. operating frequency: 60 kHz

●

Typical operating frequency: 110 kHz

●

Primary inductance: 620 µH±10 % at 1 kHz-0.25 V(b)

●

Leakage inductance: 105 µH at 100 kHz-0.25 V(c)

Electrical diagram and winding characteristics

Figure 55.

Transformer electrical diagram

Measured between pins 2-4.

Measured between pins 2-4 shorting pins 12, 9, 11, 13, 14.

Table 5.

Transformer winding data

Pins

Winding

RMS current

Number of turns

Wire type

2 - 4

Primary

1.2 Arms

40x

φ 0.1 mm - G2

8 - 12

SEC 12-A(1)

4 Arms

90x

φ 0.1 mm - G2

AN3339 Datasheet(PDF) 38 Page - STMicroelectronics

AN3339 Datasheet(HTML) 38 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44

Datasheet Download

Link URL