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EPC3248G-X Datasheet, PDF (1/2 Pages) PCA ELECTRONICS INC. – Power over Ethernet (PoE/PD) Flyback Transformer
ELECTRONICS INC.
Power over Ethernet (PoE/PD)
Flyback Transformer
EPC3248G-X & EPC3248G-X-LF
• Used in SMPS DC/DC Converter as a Flyback
Transformer in PoE/Powered Devices (PD)
• Switching Frequency : 300 KHz to 400 KHz
• Add “-LF” after part number for Lead Free
* 40 % Duty Cycle Typ. @ 48 V Input
• UL 94V-0 Recognized Components
• UL 1446 Class B Insulation System
• Low Core Loss Material
Electrical Specifications @ 25°C
Part
Number
EPC3248G-1
EPC3248G-2
EPC3248G-3
EPC3248G-4
EPC3248G-5
EPC3248G-6
EPC3248G-7
EPC3248G-8
EPC3248G-9
EPC3248G-10
EPC3248G-11
EPC3248G-12
EPC3248G-13
EPC3248G-14
EPC3248G-15
Chipset
DPA425
DPA425
DPA425
DPA423
DPA423
DPA423
DPA424
DPA424
DPA424
DPA424/5
DPA424/5
DPA424/5
DPA426
DPA426
DPA426
PoE
Class
0
0
0
1
1
1
2
2
2
3
3
3
4(PoEP)
4(PoEP)
4(PoEP)
PD
Power
(Watts)
Min. Max.
0.44 12.95
0.44 12.95
0.44 12.95
0.44 3.84
0.44 3.84
0.44 3.84
3.84 6.49
3.84 6.49
3.84 6.49
6.49 12.95
6.49 12.95
6.49 12.95
Reserved
Reserved
Reserved
Class
Usage
Default
Default
Default
Optional
Optional
Optional
Optional
Optional
Optional
Optional
Optional
Optional
Reserved
Reserved
Reserved
Voltage
(Vdc)
Fb
V In V Out Bias
36-57
36-57
36-57
36-57
36-57
36-57
36-57
36-57
36-57
36-57
36-57
36-57
36-57
36-57
36-57
3.3 13.2
5.0 13.33
12.0 12.0
3.3 13.2
5.0 13.33
12.0 12.0
3.3 13.2
5.0 13.0
12.0 12.0
3.3 13.2
5.0 13.2
12.0 12.0
3.3 13.2
5.0 13.2
12.0 12.0
Primary OCL
(µH ± 10%)
@ 300 KHz,
0.1 Vrms
120
120
120
200
200
200
120
120
120
120
120
120
25
25
25
Current
(Amp.)
Fb
Sec 1 Bias
3.92 .050
2.59 .050
1.08 .050
1.16 .050
0.77 .050
0.32 .050
1.97 .050
1.30 .050
0.54 .050
3.92 .050
2.59 .050
1.08 .050
12.12 .050
8.0 .050
3.33 .050
• Isolation : Pri., Bias to Sec. ; 1500 Vrms • Isolation : Pri. to Bias ; 500 Vrms •
Package
Type
ER14.5
ER14.5
ER14.5
ER9.5
ER9.5
ER9.5
ER11
ER11
ER11
ER14.5
ER14.5
ER14.5
EFD20
EFD20
EFD20
Schematic
1
1
1
2
2
2
1
1
1
1
1
1
3
3
3
Note : Class 4 is currently reserved for Power over Ethernet Plus (PoEP) and should not be used at this time.
Notes :
1. Assembly Process (Solder Composition)
EPC3248-X
SnPb
EPC3248-X-LF
Pb-Free
2. Peak Solder Rating
(per IPC/JEDEC-J-STD-020C)
3. Moisture Sensitive Levels (MSL)
(per IPC/JEDEC-J-STD-020C)
4. Weight
225°C
260°C
1
1
(Unlimited, ≤30°C/60%RH) (Unlimited, ≤30°C/60%RH)
TBD grams
TBD grams
5. Packaging Information
(Tube)
TBD pcs / tube
TBD pcs / tube
Schematic 1
1
V In (Pins 1-3)
[36-57 Vdc]
2
3
Fb/Bias
4
[13.2 V/0.05 A]
5
10
9
Sec. 1
7
6
Note :
1. Input Pins : Pins 1 & 3
2. Connect Pins 9,10 and 6,7 in
user board for higher power
Schematic 2
V In 1
[36-57 Vdc]
2
Fb/Bias 3
[13.2 V/0.05 A]
4
8
7
Sec. 1
6
5
Note :
1. Input Pins : Pins 1 & 2
2. Connect Pins 8,7 and 5,6 in
user board for higher power
Schematic 3
(Reserved for Class 4 PoEP)
1
V In (Pins 1-3)
[36-57 Vdc]
2
3
Fb/Bias 5
[13.2 V/0.05 A]
6
12
11
10
Sec. 1
9
8
7
Note :
1. Input Pins : Pins 1 & 3
2. Connect Pins 12,11,10 and 9,8,7
in user board for higher power
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
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.
CSC3248G-X & -LFa Rev. 3 9/26/05 FT
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com
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