Cirrus-logic CRD1611-8W Manual de usuario descargar pdf (Pagina 15)

CRD1611-8W

DS975RD5 15

7.2 Flyback Transformer

The flyback transformer stage is a quasi-resonant peak current-regulated DC-DC converter capable of delivering

the highest possible efficiency with constant current output while minimizing line frequency ripple. The auxiliary wind-

ing is used for zero-current detection and overvoltage protection.

Figure 11. Flyback Transformer Schematic

7.2.1 Electrical Specifications

Characteristics conditions:

• Operating temperature range: -25 °C to +120 °C (including coil heat)

Notes: 9. Time = 2sec.

10. Measured across pins 3 and 4.

11. Measured across pins B and A.

12. Measured across pins 2 and 1.

Parameter Condition Symbol Min Typ Max Unit

Flyback Transformer

Electrical Strength (Note 9)

operate

=50/60Hz

-4K-V

RMS

Primary Inductance (Note 10)

resonant

=10kHz, 0.3V at

20°C

13.05 14.5 15.95 mH

Primary Leakage Inductance (Note 10)

resonant

=10kHz, 0.3V at

20°C

- 106 - H

Primary DC Resistance (Note 10)

DCR

=20°C

5.25 7.0 8.75 

Secondary DC Resistance (Note 11)

DCR

=20°C

-120-m

Auxiliary DC Resistance (Note 12)

DCR

=20°C

-400-m

113T

#36 AWG

(0.13mm)

67 T

# 36AWG

(0.13mm)

10 T

# 36AWG

(0.13mm)

Primary

Auxiliary

Secondary

10T

#27AWG

(0.35mm)

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 24 25

CRD1611-8W 1
8 Watt Reference Design 1

Comentarios a estos manuales

Sin comentarios

Cirrus-logic CRD1611-8W Manual de usuario Pagina 15

Comentarios a estos manuales

Relacionado con productos y manuales para Hardware Cirrus-logic CRD1611-8W