Document 1342
For MPS MP8007
Flyback Transformers Flyback Reference Design
• Designed for Monolithic Power Systems MP8007 Flyback
ReferenceDesignforIEEE802.3afcompliantPoEapplications.
• Operates in continuous conduction mode with 36 – 57 V input.
• 1500 Vrms, 5 mA, one minute isolation (hipot) between primary
and auxiliary to secondary.
Core material Ferrite
Terminations RoHS tin-silver-copper over tin over nickel over phos
bronze.
Weight 6.0 – 6.2 g
Ambient temperature –40°C to +85°C
Max part temperature +125°C (ambient + temp rise)
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: 32 mm wide, 0.6 mm thick,
28 mm pocket spacing, 12.93 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
Inductance
at 0 A2
±±0ꢀ (ꢁµ)
Leakage
inductance4
max (ꢁµ)
DCR max (Ohms)3
Turns ratio5
pri : aux : sec
Part
Power
(W)
Ipk6
(A)
number1
pri
aux
sec
Output7
CX9628-AL_
CX9629-AL_
CX9649-AL_
12
12
12
43.7
42.9
45.3
0.095
0.10
0.10
0.094
0.10
0.10
0.009
0.02
0.09
1.00
1.00
1.00
1 : 0.25 : 0.20
1 : 0.25 : 0.45
1 : 0.25 : 0.90
2.0
2.0
2.0
5 V, 2.5 A
12 V, 1.0 A
24 V, 0.5 A
1. When ordering, please specify packaging code:
Dot indicates pin 1
Internal code
0.028
0,70
CX9629-ALD
10
1
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).
0.530
13,46
max
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.
5
6
0.512
13,00
0.098
2,50
2. Inductance is for the primary, measured at 100 kHz, 0.1 Vrms, 0 Adc.
3. DCR for the secondary is with both windings connected in parallel.
4. Leakage inductance measured between pins 1 and 3 with all other pins
shorted.
0.485
12,32
max
5. Turns ratio is with the secondary windings connected in parallel.
6. Peak primary current drawn at minimum input voltage.
7. Output is with the secondary windings connected in parallel.
8. Auxiliary winding 6.8 V, 0.02 A.
9. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
0.004/0,10
0.039
1,00
0.699
17,75
max
0.050
1,27
0.104
2,64
0.543
13,80
3
1
Pri
1
7
6
Recommended
Land Pattern
Sec
5
inches
mm
0.098
2,50
Dimensions are in
9
10
Aux
4
Secondary windings to be connected
in parallel on PC board
Document 1342 Revised 04/03/23
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Singapore + 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2023
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.