HPF2187L

Document 489 -1
High Power PoE Signal Path Magnetics
• Meets the current requirements of Gigabit PoE Plus.
• Open circuit inductance is ≥350 µH with a 22.5 mA dc offset
Core material Ferrite
Terminations RoHS Tin-silver-copper over tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight HPF2187L: 240 mg; HPX2126L: 3.9 g
Ambient temperature –40°C to +85°C
Storage temperature Component: –40°C to +85°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)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging HPF2187L: 500/7″ reel; 2000/13″ reel; Plastic tape: 16 mm wide,
0.35 mm thick, 8 mm pocket spacing, 4.4 mm pocket depth
HPX2126L: 300/13″ reel; Plastic tape: 32 mm wide, 0.5 mm thick,
20 mm pocket spacing, 11 mm pocket depth
PCB washing Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf.
Isolation Transformer
Common Mode Choke
Part Inductance2 DCR max3 Isolation4 Irms5
number1 (µH) (Ohms)(Vrms)(A)
Part Inductance2 DCR max3
number1(µH)(Ohms)
HPX2126L_
HPF2187L_
850
0.24
1500
1.9
10.0
0.15
1. When ordering, please specify packaging code:
1. When ordering, please specify packaging code:
HPX2126LD
Packaging:D
=13″ machine-ready reel. EIA-481 embossed plastic
tape (300 parts per full reel).
B=Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge),
use code letter D instead.
2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc.
3. DCR is for each winding.
4. Isolation is measured from primary to secondary of each transformer.
5. Current flowing through each secondary that causes a 20°C temperature rise from 25°C ambient
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
HPF2187LC
Packaging:C
=7″ machine-ready reel. EIA-481 embossed plastic
tape (500 parts per full reel).
B=Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge),
use code letter C instead.
D
=13″ machine-ready reel. EIA-481 embossed plastic
tape. Factory order only, not stocked (2000 parts per
full reel).
2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc.
3. DCR is for each winding.
4. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
US +1-847-639-6400 [email protected]
UK +44-1236-730595 [email protected]
Taiwan +886-2-2264 3646 [email protected]
China +86-21-6218 8074 [email protected]
Singapore + 65-6484 8412 [email protected]
Document 489-1 Revised 04/29/11
© Coilcraft Inc. 2013
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.
Document 489-2
High Power PoE Signal Path Magnetics
Isolation transformer
HPX2126L
1
12
Chipset side
TXCT
RXCT
RX+
2
11
C3
8 pF
3
10
4
9
5
8
7
2
TX–
TXCT
RXCT
6
3
RX+
C6
8 pF
C5
33 pF
C4
8 pF
6
RX–
TX+
C2
33 pF
C1
Note 1
TX–
8
4
7
Cable side
1
TX+
Common mode choke
HPF2187L
5
RX–
Note 1. C1 = 8 pF minus the output capacitance of the chipset
Isolation Transformer HPX2126L
6
Dot indicates pin 1
1
6
Common Mode Choke HPF2187L
Notch indicates pin 1
0.050
1,27
1
4
Recommended
Land Pattern
0.720 max
18,29
8
1
0.217 ±0.006
5,50 ±0,15
0.560
14,22
HPF2187L
XX
5
0.307 ±0.008
7,80 ±0,20
0.138 ±0.008
3,50 ±0,20
0.007 / 0,18
0.317 ±0.012
8,05 ±0,30
7
7
12
0.110
cen
2,76
0.620
max
15.75
*
*
0.236
6,00
12
0.080
2,03
5
4
1
8
0.0395
1,00
0.024
0,60
0.050cen
1,27
* Dimensions are typical prior to applying solder
0.425 max
10,80
0.050 cen
1,27
0.030
0,76
Dimensions are in
inches
mm
1
4
0.098
2,50
Recommended
Land Pattern
8
5
0.200
5,08
Dimensions are in
US +1-847-639-6400 [email protected]
UK +44-1236-730595 [email protected]
Taiwan +886-2-2264 3646 [email protected]
China +86-21-6218 8074 [email protected]
Singapore + 65-6484 8412 [email protected]
0.012
0,305
0.060
1,52
inches
mm
Document 489-2 Revised 04/29/11
© Coilcraft Inc. 2013
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.
Document 489-3
High Power PoE Signal Path Magnetics
Description
Coilcraft’s signal path magnetics meet the current requirements of Gigabit Ethernet PoE Plus. The open circuit
inductance is ≥350 µH with a 38 mA dc offset applied
from 0°C to 70°C. It can handle 3.8 A of injected current.
The system comprises an isolation transformer, a common mode choke and six capacitors. The capacitor
across the primary of the isolation transformer on the TX
side tunes the circuit by matching the output capacitance
of the chipset allowing these components to be used with
virtually all chipsets.
The two isolation transformers are placed in a single
package (HPX2126L) and both common mode chokes
in an even smaller package (HPF2187L). Both packages
fit easily behind a standard Ethernet jack.
Testing
A matching network is used to perform the testing for
return loss, insertion loss, crosstalk, common mode to
common mode rejection and differential to common mode
rejection. The network matches the 50 Ohm single ended
connection of network analyzers to 100 Ohm differential
balanced lines. A 1:1 balun is used with a resistive network to transform the impedance. The network is then
calibrated out of the measurement by using open, short,
For return loss, the chip side of the component is loaded
with 100 Ohms and the cable side of the system is tested
using the matching network.
For insertion loss, the fixture used for the return loss is
altered to replace the 100 Ohm load with a matching
network for the output port of the network analyzer.
For common mode to common mode rejection, TX+ and
TX– (or RX+ and RX–), depending on the side of the
system) is tied together and an S21 measurement is
taken from chip side to cable side.
For differential to common mode rejection, the chip side of
the system is excited by the network analyzer through the
matching network. The measurement is taken by looking
at the balance between two 50 Ohm loads across the
cable side of the system.
For crosstalk, the chip side TX is excited by the network
analyzer through the matching network. The center-tap
on the chip side of each isolation transformer is grounded,
and the chip side RX is measured. The cable side of both
RX and TX is externally loaded 100 Ohms.
Insertion Loss
0
0
10
10
20
20
Insertion Loss (dB)
Return Loss (dB)
Return Loss
load calibration techniques. The circuit is then placed
behind the matching network for each of the tests. All
tests are performed on an Agilent/HP 8753ES network
analyzer.
30
40
50
60
70
80
30
40
50
60
70
80
90
90
100
100
1
10
100
Frequency (MHz)
802.3af specification:
18 dB min from 1 MHz to 40 MHz
16 dB min at 50 MHz
12 dB min at 80 MHz
10 dB min at 100 MHz
1000
1
10
100
Frequency (MHz)
1000
802.3af specification:
1.0 min dB from 0.1 MHz to 100 MHz
1.2 min dB at 125 MHz
US +1-847-639-6400 [email protected]
UK +44-1236-730595 [email protected]
Taiwan +886-2-2264 3646 [email protected]
China +86-21-6218 8074 [email protected]
Singapore + 65-6484 8412 [email protected]
Document 489-3 Revised 04/29/11
© Coilcraft Inc. 2013
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.
Document 489-4
High Power PoE Signal Path Magnetics
Differential to Common Mode Rejection
0
Common Mode Rejection (dB)
10
20
30
40
50
60
70
80
90
100
1
10
100
Frequency (MHz)
1000
Differential to Common Mode Rejection (dB)
Common Mode Rejection
0
10
20
30
40
50
60
70
80
90
100
1
10
100
1000
Frequency (MHz)
802.3af specification:
50 dB min from 1 MHz to 10 MHz
30 dB min from 10 MHz to 125 MHz
20 dB min from 125 MHz to 500 MHz
802.3af specification:
45 dB min at 30 MHz
40 dB min at 60 MHz
35 dB min at 100 MHz
Crosstalk
L vs Offset Current – HPX2126L
1400
0
10
1200
1000
30
Inductance (µH)
Crosstalk (dB)
20
40
50
60
70
800
600
400
85°C
80
90
100
70°C
25°C
200
0
1
10
100
Frequency (MHz)
1000
0
10
20
30
40
50
60
Current (mA)
802.3af specification:
45 dB min at 30 MHz
40 dB min at 60 MHz
33 dB min at 100 MHz
US +1-847-639-6400 [email protected]
UK +44-1236-730595 [email protected]
Taiwan +886-2-2264 3646 [email protected]
China +86-21-6218 8074 [email protected]
Singapore + 65-6484 8412 [email protected]
Document 489-4 Revised 04/29/11
© Coilcraft Inc. 2013
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.