Flyback Power Transformer
E L E C T R O N I C S I N C .
EPC3133-X
• 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
Electrical Parameters @ 25° C
Schematic
PCA
Part
Chipset
Voltage
Primary
Current
(Vdc)
OCL
(Amp.)
Number
(µH 10%)
V out
2
V out
4
V out
V out
3
Sec.
1
Sec.
Sec.
V in
@ 10 KHz,
Sec.
4
1
2
3
Pin 1-3
0.1 Vrms
N
0.4
N
TNY253 (44 KHz)
TOP242P (132 KHz)
TNY254 (44KHz)
TNY266P (132 KHz)
TNY267
N
6.2
N
---
30
---
---
---
---
.173
N
EPC3133-1
EPC3133-2
EPC3133-3
EPC3133-4
EPC3133-5
EPC3133-6
120-375
120-375
120-375
120-375
120-375
120-375
7.5
3.3
12
5
N
5100
2100
3670
1660
2800
1800
---
.005
---
A
B
A
A
A
A
1.5
.05
.05
N
15
15
N
.25
N
N
1.0
---
N
N
2.0
.05
.05
3.3
24
15
13
---
0.17
TNY268 (132 KHz)
24
0.17
---
•
Switching Frequency : 132 KHz/44 KHz
•
Isolation : 3750 Vrms
•
Dielectric Rating
(Vdc)
1 sec. 4500 or 60 sec. 3750
Pri. to all Sec. Wdg’s
1 sec. 4500 or 60 sec. 3750
Between Sec. Wdg’s to Core
Note : “N” means Not Required/No Connections •
1 sec. 1500 or 60 sec. 1000
Between Pri. Wdg & Bias
•
Schematic A
Schematic B
1
1
9
9
V in Pri.
(Pin 1-3)
V in Pri.
2
Sec. 4
Sec. 1
Sec. 2
2
3
4
(Pin 1-3)
3
8
7
8
7
Sec. 2
Sec. 1
4
Sec. 3
Sec. 3
6
6
(Fb/Bias)
(Fb/Bias)
5
5
Shield is optional
Pin #2 is not connected in circuit
Package
.590
(15.00)
.937
.779
.197
(23.80)
(19.80)
(5.00)
9
6
PCA
.669
.587
.193 (4.90)
EPC3133-X
(17.00)
(14.90)
1
5
.157 (4.00)
.098
.138
(2.50)
.197
(3.50)
.025 Sq.
(.640)
.551
(5.00)
.590
(14.00)
.669
Typ.
Typ.
(17.00)
(15.00)
Unless Otherwise Specified Dimensions are in Inches /mm
.010 /.25
Product performance is limited to specified parameters. Data is subject to change without prior notice.
CSC3133-X Rev. 3 1/26/05 FT
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com