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EPC3248G-X-LF_15 Datasheet, PDF (1/2 Pages) PCA ELECTRONICS INC. – Power over Ethernet 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
• Input Voltage : 36-57 VDC
• 40 % Duty Cycle Typ. @ 48 VDC Input Voltage
• UL 94V-0 Recognized Materials
• UL 1446 Class B Insulation System
• Storage Temperature : -40°C to +125°C
• Operating Temperature : -40°C to +85°C
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(PoE+)
4(PoE+)
4(PoE+)
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 Out Bias
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
Current
(Amp.)
Fb
V Out Bias
3.92 0.05
2.59 0.05
1.08 0.05
1.16 0.05
0.77 0.05
0.32 0.05
1.97 0.05
1.30 0.05
0.54 0.05
3.92 0.05
2.59 0.05
1.08 0.05
12.12 0.05
8.0 0.05
3.33 0.05
Primary OCL Le Package Schematic
(µH ± 10%) (µH Max.) Type
@ 300 KHz, @ 300 KHz,
0.1 Vrms 0.1 Vrms
120
2.5
ER14.5
1
120
2.5
ER14.5
1
120
2.5
ER14.5
1
200
2.5
ER9.5
2
200
2.5
ER9.5
2
200
2.5
ER9.5
2
120
3.5
ER11
1
120
3.5
ER11
1
120
3.5
ER11
1
120
2.5
ER14.5
1
120
2.5
ER14.5
1
120
2.5
ER14.5
1
25
4.0
EFD20
3
25
4.0
EFD20
3
25
4.0
EFD20
3
• Isolation : Pri., Bias to Sec. ; 1500 Vrms • Isolation : Pri. to Bias ; 500 Vrms •
Notes :
1. Lead Finish
2. Peak Solder Rating
3. Moisture Sensitive Levels (MSL)
EPC3248-X
SnPb
EPC3248-X-LF
Hot Dipped Sn or SnCu
225°C
260°C
1
1
(Unlimited, ≤30°C/60%RH) (Unlimited, ≤30°C/60%RH)
Schematic 1
1
V In
(Pins 1-3)
2
3
4
Fb/Bias
5
10
9
V Out
7
6
Schematic 2
Schematic 3
V In 1
(Pins 1-3)
2
3
Fb/Bias
4
8
7
V Out
6
5
1
V In
(Pins 1-3)
2
3
5
Fb/Bias
6
12
11
10
V Out
9
8
7
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. 5 8-15-11 FT
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com
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