Document 984
For TI TPS23752
Flyback Transformer POE PD controller
• Developed forTexas Instruments green modeTPS23752 POE
PD controller
• 1500 Vrms, one minute isolation (hipot) primary and bias to
secondary; 500 Vrms, one minute isolation primary to bias;
750 Vrms all pins to the core.
Core material Ferrite
Terminations RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight 11.7 g
Ambient temperature –40°C to +125°C
Storage temperature Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Resistance to soldering heat Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /
85% relative humidity)
Packaging 175 per 13″ reel Plastic tape: 44 mm wide, 0.5 mm thick,
32 mm pocket spacing, 12.0 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
Inductance
at0A2
±±0ꢀ(µH)
Leakage
DCR max (Ohms)4
Turns ratios7
Part
inductance5 Capacitance6
Ipk3
(A)
number1
pri
sec
bias
max (µH)
max (pF)
pri:sec
pri:bias
Output8
JA4456-DL_
70
0.07
0.0043 0.310
0.615
158
1:0.182
1:0.409
3.3
5 V, 5 A
Dot indicates pin 1
12
1. When ordering, please specify termination and packaging codes:
1
JA4456-DLD
Termination: L = RoHS tin-silver over tin over nickel over phos bronze.
0.810
max
Special order: T = RoHS tin-silver-copper (95.5/4/0.5) or S = non-RoHS tin-lead (63/37).
20,57
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic tape (175 parts per full reel). Quantities
less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
6
7
B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating
the need for multiple packaging codes. When ordering, simply change the last letter of your
part number from B to D.
1.181
30,00
max
2. Inductance is for the primary, measured at 250 kHz, 0.5 Vrms.
3. Peak primary current drawn at minimum input voltage.
4. DCR for the primary and secondary are with the windings connected in parallel.
5. Leakage inductance is for the primary windings with all the secondary windings shorted.
6 Capacitance is for the primary, measured at 250 kHz, 0.5 Vrms with all secondary pins shorted.
7. Turns ratios are with the primary windings and secondary windings connected in parallel.
8. Output of the secondary is with all windings connected in parallel. Bias winding output is 12 V, 20 mA.
9. Electrical specifications at 25°C.
0.50
12,7
max
0.004/0,10
0.827
21,00
0.969
24,60
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
0.080
2,03
7
8
9
1
2
0.930
23,62
0.050
1,27
0.028
0,711
7
1
6
1
Pri
Sec
4
3
10
11
12
Recommended
Land Pattern
5
12
0.118
3,0
0.118
3,0
0.130
3,30
Bias
6
inches
mm
Dimensions are in
Primary windings and secondary windings
to be connected in parallel on PC board.
Document 984 Revised 12/21/21
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
China +86-21-6218 8074 sales@coilcraft.com.cn
Singapore + 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2021
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
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