TOP245P datasheet(15/35 Pages) POWERINT

15 / 35 page

DER-18

DVD Recorder Supply – TOP245P

March 30, 2004

Page 15 of 35

Power Integrations

Tel: +1 408 414 9200 Fax: +1 408 414 9201

www.powerint.com

Transformer Spreadsheets

ACDC_TOPGX_Rev1.5_081203

INPUT INFO OUTP

UNIT

TOP_GX_081203.xls: TOPSwitch-GX

Continuous/Discontinuous Flyback

Transformer Design Spreadsheet

ENTER APPLICATION

VARIABLES

Customer

VACMIN

Volts

Minimum AC Input Voltage

VACMAX

280

Volts

Maximum AC Input Voltage

Hertz

AC Mains Frequency

Volts

Output Voltage

Watts

0.75

Efficiency Estimate

0.75

Loss Allocation Factor

Volts

Bias Voltage

mSeco

nds

Bridge Rectifier Conduction Time

Estimate

CIN

uFarad

Input Filter Capacitor

ENTER TOPSWITCH-GX

VARIABLES

TOP-GX

TOP2

45P

Univer

sal

115 Doubled/230V

Chosen Device

TOP24

Power

Out

22W

30W

External Ilimit reduction factor (KI=1.0

for default ILIMIT, KI <1.0 for lower

ILIMIT)

ILIMITMIN

1.023 Amps

Use 1% resistor in setting external

ILIMIT

ILIMITMAX

1.177 Amps

Use 1% resistor in setting external

ILIMIT

Frequency - (F)=132kHz,

(H)=66kHz

Full (F) frequency option - 132kHz

13200

Hertz

TOPSwitch-GX Switching Frequency:

Choose between 132 kHz and 66 kHz

fSmin

12400

Hertz

TOPSwitch-GX Minimum Switching

Frequency

fSmax

14000

Hertz

TOPSwitch-GX Maximum Switching

Frequency

VOR

103

Volts

Reflected Output Voltage

VDS

Volts

TOPSwitch on-state Drain to Source

Voltage

0.5

Volts

Output Winding Diode Forward Voltage

Drop

VDB

0.7

Volts

Bias Winding Diode Forward Voltage

Drop

0.50

Ripple to Peak Current Ratio (0.4 <

KRP < 1.0 : 1.0< KDP<6.0)

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