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
(H 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
4
5
6
7
8
V in Pri.
Sec. 3
(Fb/Bias)
Sec. 1
Sec. 2
1
2
3
4
5
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
(.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
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