E L E C T R O N I C S I N C .

Flyback Power Transformer

TEL: (818) 892-0761

FAX: (818) 894-5791

http://www.pca.com

PCA ELECTRONICS, INC.

16799 SCHOENBORN ST.

NORTH HILLS, CA 91343

• Used in SMPS Flyback Topology

• Designed for use with Power Integration Chip

• Reinforced Insulation (Triple Insulated Wire)

• UL 94V-0 Recognized Components

• UL 1446 Class F Insulation System

• Very Low Core Loss

EPC3127-X

Product performance is limited to specified parameters. Data is subject to change without prior notice.

Electrical Parameters @ 25° C

Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25

CSC3127-X

Rev. 5

1/3/05 FT

Package

Voltage

(Vdc)

Primary

OCL

(µH ± 10%)

1900

1900

2400

475

2800

@ 10 KHz,

0.1 Vrms

TNY268P

TNY266P

TOP232Y/TOP242Y

TOP244P

TNY267

Chipset

120-375

120-375

120-375

120-375

120-375

V in

5

5

5

13.55

3.3

V out

1

Current

(Amp.)

• Note : “N” means Not Required/No Connections •

PCA

Part

Number

EPC3127-1

EPC3127-2

EPC3127-3

EPC3127-4

{

Schematic A

1

2

3

45

6

7

8

V in Pri.

Sec. 3

(Fb/Bias)

Sec. 1

Sec. 2

1

2

3

45

6

7

8

Pri.

Sec. 3

(Fb/Bias)

Sec. 1

Sec. 2

Schematic B

N

N

3.3

N

N

V out

2

15

15

15

15

15

V out

3

3.0

2.0

2.0

1.2

2.0

Sec.

1

N

N

2

N

N

Sec.

2

.05

.05

.05

.05

.05

Sec.

3

A

A

B

A

A

Schematic

Dielectric Rating

(Vrms)

Between Sec. Wdg’s to Core

1 sec. 4500 or 60 sec. 3750

Pri. to all Sec. Wdg’s & Core

1 sec. 4500 or 60 sec. 3750

Between Pri. Wdg & Bias

1 sec. 1500

.787

(20.00)

.590

Typ.

(15.00)

.728

Max.

(18.50)

.138

(3.50)

.031 Ø

(.800)

.815

(20.70)

.552

Max.

(14.00)

.063

(1.60)

.197

(5.00)

.590

Typ.

(15.00)

.197

(5.00)

.051

(1.30)

.590

(15.00)

.590

(15.00)

PCA

EPC3127-X

D.C.

• Switching Frequency : 132 KHz • Isolation : 4500 Vrms •