EP11 datasheet(16/46 Pages) POWERINT

16 / 46 page

EPR-00011 - 70 W Adapter

22-Jan-01

Page 16 of 46

Power Integrations Inc

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

www: http://www.powerint.com

DC INPUT VOLTAGE

PARAMETERS

VMIN

82 Volts

Minimum DC Input Voltage

VMAX

375 Volts

Maximum DC Input Voltage

CURRENT WAVEFORM SHAPE

PARAMETERS

DMAX

0.62

Maximum Duty Cycle

IAVG

1.00 Amps

Average Primary Current

2.32 Amps

Peak Primary Current

1.39 Amps

Primary Ripple Current

IRMS

1.31 Amps

Primary RMS Current

TRANSFORMER PRIMARY DESIGN

PARAMETERS

273 uHenries

Primary Inductance

Primary Winding Number of Turns

Bias Winding Number of Turns

ALG

834 nH/T^2

Gapped Core Effective Inductance

2934 Gauss

Maximum Flux Density at PO, VMIN (BM<3000)

4140 Gauss

Peak Flux Density (BP<4200)

BAC

880 Gauss

AC Flux Density for Core Loss Curves (0.5 X Peak to Peak)

191

Relative Permeability of Ungapped Core

0.16 mm

Gap Length (Lg > 0.1 mm)

BWE

12.88 mm

Effective Bobbin Width

0.71 mm

Maximum Primary Wire Diameter including insulation

INS

0.07 mm

Estimated Total Insulation Thickness (= 2 * film thickness)

DIA

0.64 mm

Bare conductor diameter

AWG

23 AWG

Primary Wire Gauge (Rounded to next smaller standard AWG value)

512 Cmils

Bare conductor effective area in circular mils

CMA

390

Cmils/Am

Primary Winding Current Capacity (200 < CMA < 500)

TRANSFORMER SECONDARY DESIGN

PARAMETERS (SINGLE OUTPUT / SINGLE

OUTPUT EQUIVALENT)

Lumped parameters

ISP

13.96 Amps

Peak Secondary Current

ISRMS

6.22 Amps

Secondary RMS Current

3.65 Amps

Power Supply Output Current

IRIPPLE

5.05 Amps

Output Capacitor RMS Ripple Current

CMS

1245 Cmils

Secondary Bare Conductor minimum circular mils

AWGS

19 AWG

Secondary Wire Gauge (Rounded up to next larger standard AWG

value)

DIAS

0.91 mm

Secondary Minimum Bare Conductor Diameter

ODS

3.07 mm

Secondary Maximum Outside Diameter for Triple Insulated

Wire

INSS

1.08 mm

Maximum Secondary Insulation Wall Thickness

VOLTAGE STRESS

PARAMETERS

VDRAIN

647 Volts

Maximum Drain Voltage Estimate (Includes Effect

of Leakage Inductance)

PIVS

81 Volts

Output Rectifier Maximum Peak Inverse Voltage

PIVB

52 Volts

Bias Rectifier Maximum Peak Inverse Voltage

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