dc2539a-a – high efficiency ieee802.3bt (poe++, type 3
TRANSCRIPT
1dc2539aafb
DEMO MANUAL DC2539A-A
Description
LT4295, LT4321 High Efficiency IEEE802.3bt (PoE++, Type 3, 51W) PD
with Flyback DC/DC Converter and Auxiliary Power Input
Demonstration circuit 2539A is an IEEE802.3bt (Draft 2.1) compliant Power over Ethernet (PoE) Powered Device (PD). It features the LT®4295 PD interface and switch-ing regulator controller and the LT4321 PoE ideal diode bridge controller.
The LT4295 provides IEEE802.3af (PoE, Type 1), IEEE802.3at (PoE+, Type 2), and IEEE802.3bt (PoE++, Type 3) compliant interfacing and power supply control. It utilizes an external, low RDS(ON) (57mΩ typical) N-channel FET for the hot swap function to improve efficiency. The LT4295 controls a DC/DC converter that utilizes a highly efficient Flyback topology with synchronous rectification.
The LT4321 controls eight low RDS(ON) (30mΩ typical) N-channel FETs to further improve end-to-end power
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners.
performance summary
BoarD photos
delivery efficiency and ease thermal design. This solution replaces the eight diodes typically found in a passive PoE rectifier bridge.
The DC2539A-A accepts up to 51W of delivered power from a Power Sourcing Equipment (PSE) via the RJ45 connector (J1) or a local 48VDC power supply using the auxiliary supply input. When both supplies are connected, the auxiliary supply input has priority over the PoE input. The DC2539A-A supplies a 12V output at up to 3.9A.
Design files for this circuit board are available at http://www.linear.com/demo/DC2539A-A
Specifications are at TA = 25°C
Top Side Bottom Side
PARAMETER CONDITIONS VALUE
Port Voltage (VPORT) At RJ45 37V to 57V
Auxiliary Voltage From AUX+ to AUX– Terminals 37V to 57V
Output Voltage (VOUT) 12V (Typical)
Output Current (IOUT) 3.9A (Max)
Output Voltage Ripple VPORT = 42.5V, IOUT = 3.9A 54mVP-P (Typical)
Load Regulation ±0.4% (Typical)
Efficiency VPORT = 50V, IOUT = 3A, End-to-End 91.5% (Typical)
Switching Frequency 250kHz (Typical)
2dc2539aafb
DEMO MANUAL DC2539A-A
typical performance characteristics
Top Side Bottom Side
Figure 2. Efficiency (End-to-End)
Figure 1. Thermal Pictures (Conditions: VPORT = 57V, VOUT = 12V, IOUT = 3.9A)
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DEMO MANUAL DC2539A-A
typical performance characteristics
Figure 5. Output Voltage Ripple (Conditions: VPORT = 42.5V, VOUT = 12V, IOUT = 3.9A)
Figure 4. Switch Node Waveforms (Conditions: VPORT = 57V, VOUT = 12V, IOUT = 3.9A)
5dc2539aafb
DEMO MANUAL DC2539A-A
typical performance characteristics
Figure 6. Load Transient Response (Conditions: VPORT = 42.5V, Load Step: 2A to 4A to 2A)
6dc2539aafb
DEMO MANUAL DC2539A-A
typical performance characteristics
Figure 7. Gain and Phase Margin of the Flyback DC/DC Converter (Conditions: VPORT = 57V, VOUT = 12V, IOUT = 3.9A)
CROSSOVER FREQUENCY GAIN MARGIN PHASE MARGIN
≈5.8kHz ≈20dB ≈63°
7dc2539aafb
DEMO MANUAL DC2539A-A
Quick start proceDurePower Over Ethernet (PoE) Input
1 Disconnect auxiliary supply if it is connected to AUX+ and AUX– inputs of the DC2539A-A.
2 Place and connect test equipment (voltmeter, ammeter, oscilloscope, and electronic load) as shown in Figure 8.
3 Turn down the electronic load to a minimum value and turn off the electronic load.
4 Connect the output of the IEEE 802.3bt compliant PSE to the RJ45 connector (J1) of the DC2539A using a CAT5e or CAT6 Ethernet cable. (See note.)
5 After the LED (D4) on the DC2539A is lit, check the output voltage using a voltmeter. Output voltage should be within 12.0V±0.2V.
6 Turn on the electronic load and increase its load cur-rent up to 3.9A. Observe the output voltage regulation, efficiency, and other parameters.
7 Verify T2P response with an oscilloscope as shown in Figure 8. The T2P response to the type of PSE con-nected to the DC2539A-A is provided in Table 1.
Note: An 802.3bt PSE has not yet been released. In the interim, an LTPoE++® compliant PSE (DC1814A-B) may be used to provide power to the DC2539A-A. The LTPoE++ classification will not be 802.3bt compliant, but the PSE will provide a compatible detection and power output. Specifically, the T2P output of the DC2539A-A is different from the behavior stated in Table 1 and will indicate connection to a Type 2 PSE. Otherwise PD behavior will be unaffected.
Figure 8. Setup Diagram for PoE Input
IEEE802.3btPSE
CAT5eOR CAT6CABLE
+
–
DC POWERSUPPLY
+
–
VOLTMETER
+
– AMMETER
+
–
ELECTRONICLOAD
+
–
OSCILLOSCOPE
DC2539 F08
+
–
Table 1. T2P ResponsePSE T2P Response Negotiated PD Input Power
IEEE
Logic High 13W
Logic Low 25.5W
50% Logic High/50% Logic Low, Toggle at 976Hz ±7% 51W
LTPoE++, 52.7W Logic Low 51W
8dc2539aafb
DEMO MANUAL DC2539A-A
Auxiliary Supply Input
1. Place and connect test equipment (voltmeter, ammeter, oscilloscope, and electronic load) as shown in Figure 9.
2. Turn down the electronic load to a minimum value and turn off the electronic load.
3. Connect the output of the auxiliary supply to the DC2539A as shown in Figure 9. Turn on the auxiliary supply and set its current limit to 2A. Then increase its output voltage to 48V.
Quick start proceDure4. Once the LED (D4) on the DC2539A is lit, check the
output voltage using a voltmeter. Output voltage should be within 12.0V±0.2V.
5. Turn on the electronic load and increase its load cur-rent up to 3.9A. Observe the output voltage regulation, efficiency, and other parameters.
6. Verify T2P response with an oscilloscope as shown in Figure 9. The T2P response during auxiliary power operation is: 75% Logic High/25% Logic Low, Toggle at 976Hz ±7%
VOLTMETER
+
– AMMETER
+
–
ELECTRONICLOAD
+
–
OSCILLOSCOPE
DC2539 F09
+
–
AUXILIARYSUPPLY
+ –
Figure 9. Setup Diagram for Auxiliary Supply Input
9dc2539aafb
DEMO MANUAL DC2539A-A
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
DC2539A General BOM
1 1 CG1 CAP, CER, X7R 1000pF 2kV 10% 1808 MURATA GR442QR73D102KW01L
2 1 CG2 CAP, CER, X7R 0.01µF 100V 20% 1206 AVX 12061C103MAT2A
3 0 C1 CAP, CER, OPT 2kV 1812 OPT
4 0 C5 CAP, CER, X7U OPT 6.3V 10% 1210 OPT
5 1 C6 CAP, ELEC, 10µF 100V 20% 6.3 × 7.7 SUNCON 100CE10KX
6 1 C7, C29 CAP, CER, X7R 2.2µF 100V 10% 1210 MURATA GRM32ER72A225KA35
7 1 C10 CAP, CER, X7R 10nF 100V 20% 0603 MURATA GRM188R72A103KA01D
8 2 C11, C12 CAP, CER, X7R 0.047µF 100V 10% 0603 KEMET C0603C473K1RACTU
9 1 C13 CAP, CER, X7R 10µF 10V 10% 1206 MURATA GRM31CR71A106KA01L
10 0 C15, C18, C19, C21 CAP, CER, X5R OPT 2kV 20% 1812 OPT
11 1 C17 CAP, CER, X7R 1µF 25V 10% 0603 MURATA GRM188R71E105KA12
12 1 C20 CAP, CER, X7R 2.2nF 25V 10% 0603 MURATA GRM188R71E222KA01
13 1 C23 CAP, CER, X7R 4.7nF 2kV 1812 MURATA GR443DR73D472KW01L
14 1 C26 CAP, CER, X7R 100pF 16V 0402 AVX, 0402YC101KAT2A
15 0 C27 CAP, CER, X7R OPT 6.3V 10% 0402 OPT
16 1 D1 DIODE, SCHOTTKY, PMEG10020 100V SOD128 NXP PMEG10020AELPX
17 3 D2, D16, D19 DIODE, TVS, PTVS58VS1UR 58V SOD123 NXP PTVS58VS1UR
18 1 D3 DIODE, ZENER, MMSZ5252BS 24V SOD323 DIODES INC MMSZ5252BS
19 1 D4 DIODE, LED GREEN ROHM SML-010FTT86L
20 1 D13 DIODE, SCHOTTKY, NXP, BAT46W 100V SOD323 NXP BAT46WJ,115
21 1 D15 DIODE, DIODE INC, BAV19WS 120V SOD323 DIODE INC BAV19WS
22 1 D17 DIODE, SCHOTTKY, PMEG1020EA 10V SOD323 NXP PMEG1020EA
23 8 E2, E3, E4, E5, E6, E9, E11, E12
TP, TURRET, PAD150-094 0.094" MILL-MAX 2501-2-00-80-00-00-07-0
24 1 J1 CONN, INTEGRATED JACK, 7499511001A WURTH 7499511001A
25 1 J2 CONN, RJ45 JACK, SS-6488-NF-K1 STEWART CONNECTOR SS-6488-NF-K1
26 2 J3, J4 CONN, BANANA, 575-4 0.175" KEYSTONE 575-4
27 1 L2 IND, 4.7µH WURTH 744316470
28 1 L4 IND, 100µH COILCRAFT DO1608C-104
29 0 L5 IND, OPT OPT
30 9 Q11, Q12, Q13, Q14, Q15, Q16, Q17, Q18
MOSFET, N-CH, PSMN075-100MSE 100 LFPAK33 NXP PSMN075-100MSE
31 1 Q1 MOSFET, N-CH, PSMN040-100MSE 100 LFPAK33 NXP PSMN040-100MSE
32 1 Q5 TRANSISTOR, PNP, PBSS5140T 40V SOT23 NXP PBSS5140T
33 1 Q6 TRANSISTOR, NPN, PBSS4140T 40V SOT23 NXP PBSS4140T
34 1 Q7 TRANSISTOR, PNP, FMMT723 100V SOT23 DIODES INC FMMT723TA
35 4 RT1, RT2, RT3, RT4 RES, CHIP, 75Ω 5% 0603 NIC NRC06J750TRF
36 1 R5 RES, CHIP, 8.2Ω 5% 0805 NIC NRC10J8R2TRF
37 1 R6 RES, CHIP, 3.3k 5% 0603 NIC NRC06J332TRF
38 1 R7 RES, CHIP, 20Ω 5% 0805 VISHAY CRCW080520R0JNEA
39 1 R12 RES, CHIP, 0Ω 5% 0603 NIC NRC06ZOTRF
parts list
10dc2539aafb
DEMO MANUAL DC2539A-A
parts listITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
40 1 R13 RES, CHIP, 100Ω 5% 0603 VISHAY CRCW0603100RFKEA
41 1 R15 RES, CHIP, 15Ω 5% 0603 NIC NRC06J150TRF
42 1 R17 RES, CHIP, 2.00k 1% 0603 NIC NRC06F2001TRF
43 1 R18, RES, CHIP, 10k 5% 0603 YAGEO RC0603JR-0710KL
44 1 R21 RES, CHIP, 174k 1% 0603 VISHAY CRCW0603174KFKEA
45 1 R22 RES, CHIP, 107k 1% 0603 NIC NRC06F1073TRF
46 2 R27, R31 RES, CHIP, 0Ω SHUNT 0402 NIC NRC04ZOTRF
47 1 R28 RES, CHIP, 0Ω SHUNT 0603 NIC NRC06ZOTRF
48 1 R29 RES, CHIP, 52.3k 1% 0603 VISHAY CRCW060352K3FKEA
49 0 R32 RES, CHIP, OPT 5% 1812 OPT
50 0 R33 RES, CHIP, OPT 5% 0805 OPT
51 1 T3 XFMR, SMD GATE DRIVE, EPA4271GE PCA EPA4271GE
52 0 T3 (ALTERNATE) XFMR, SMD GATE DRIVE, PE-68386NL PULSE PE-68386NL
53 1 U3 IC, POE IDEAL BRIDGE CONTROLLER LT4321IUF QFN16
LINEAR TECH LT4321IUF
54 2 STENCIL (TOP & BOTTOM) STENCIL DC2539A
DC2539A-A
1 1 C2 CAP, CER, X5R 10µF 16V 10% 1210 MURATA GRM32DR61C106KA01
2 1 C3 CAP, CER, X5R 10µF 16V 10% 1210 MURATA GRM32DR61C106KA01
3 1 C4 CAP, ELEC, 47µF 35V 20% 6.0X5.8 PANASONIC EEH-ZA1V470P
4 1 C8 CAP, CER, U2J 330pF 630V 5% 1206 MURATA GRM31A7U2J331JW31
5 1 C9 CAP, CER, U2J 220pF 630V 5% 1206 MURATA GRM31A7U2J221JW31
6 1 C16 CAP, CER, X7R 1µF 25V 10% 0805 MURATA GRM21BR71E105KA99L
7 1 C22 CAP, CER, X7R 3.3nF 25V 10% 0603 AVX 06033C332KAT2A
8 1 C24 CAP, CER, X7R 0.1µF 25V 20% 0603 MURATA GRM188R71E104KA01D
9 1 C25 CAP, CER, X7R 330pF 25V 10% 0603 AVX 06033C331KAT2A
10 0 D18 DIODE, OPT 40V SOD323 OPT
11 1 L1 IND, 220nH WURTH 744316022
12 1 L3 IND, CMC, 6mH, COILCRAFT UA8085-AL
13 1 Q2 MOSFET, N-CH, 150V SOP ADVANCE TOSHIBA TPH1500CNH
14 1 Q4 MOSFET, N-CH, 150V SOP ADVANCE TOSHIBA TPH1500CNH
15 1 R2 RES, CHIP, 1.5k 5% 0805 NIC NRC10J152TRF
16 1 R3 RES, CHIP, 75Ω 5% 1206 VISHAY CRCW120675R0JNEA
17 1 R4 RES, CHIP, 75Ω 5% 1206 VISHAY CRCW120675R0JNEA
18 1 R8 RES, CHIP, 39Ω 5% 1206 VISHAY CRCW120639R0JNEA
19 1 R9 RES, CHIP, 39Ω 5% 1206 VISHAY CRCW120639R0JNEA
20 1 R10 RES, CHIP, 5.62k 1% 0603 VISHAY CRCW06035K62FKEA
21 1 R11 RES, CHIP, 5.23k 1% 0603 YAGEO RC0603FR-075K23L
11dc2539aafb
DEMO MANUAL DC2539A-A
parts listITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
22 1 R14 RES, CHIP, 20mΩ 1% 2010 VISHAY WSL2010R0200FEA
23 1 R16 RES, CHIP, 0Ω, Shunt, 0805 VISHAY CRCW08050000Z0EA
24 1 R19 RES, CHIP, 47.5Ω 1% 0805 VISHAY CRCW080547R5FKEA
25 1 R20 RES, CHIP, 150Ω 1% 0805 VISHAY CRCW0805150RFKEA
26 0 R23 RES, CHIP, OPT 5% 0603 OPT
27 1 R24 RES, CHIP, 30k 5% 0603 VISHAY CRCW060330K1JNEA
28 1 R25 RES, CHIP, 10k 5% 0603 YAGEO RC0603JR-0710KL
29 1 R26 RES, CHIP, 4.7k 5% 0603 NIC NRC06J472TRF
30 0 R30 RES, CHIP, OPT 5% 0805 OPT
31 1 T1 XFMR, FLYBACK TRANSFORMER, EPC3633G PCA EPC3633G
32 0 T1 (ALTERNATE) XFMR, FLYBACK TRANSFORMER, 750316116 WURTH 750316116
33 1 U1 IC, PD & SWITCHER CONTROLLER, LT4295IUF QFN28
LINEAR TECH LT4295IUF
34 1 ISO1 IC, TRANSISTOR OUTPUT OPTOCOUPLER, SO4 TOSHIBA TLP291(GR-TP,SE)
35 4 MH1-MH4 STAND-OFF, NYLON 0.50" TALL (SNAP ON) KEYSTONE 8833
36 1 FAB, PRINTED CIRCUIT BOARD DEMO CIRCUIT 2539A
12dc2539aafb
DEMO MANUAL DC2539A-A
schematic Diagram5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
VPO
RTP
-VO
UT
+VO
UT
VPO
RTN
GN
D OPTI
ONAL
COM
PONE
NTS
37V-
57V
T2P
___
AUX+
AUX-
12V/
3.9A
FLYB
ACK
DC-D
C CO
NVER
TER
AND
AUXI
LIAR
Y PO
WER
INPU
T
VPR
I_SG
SG
VPRI
_SW
PG
VSEC
_SWVS
EC_P
VPRI
_P
PG
VSEC
_SG
FBVS
EC_P
VAU
X_P
FB
+VO
UT
+VO
UT
VPO
RTP
VCC
VCC
+VO
UT
VPO
RTP
VPO
RTN
REVI
SION
HIS
TORY
DESC
RIPT
ION
DATE
APPR
OVED
ECO
REV
KAUN
G H.
PROD
UCTI
ON1
29-
20-2
016
REVI
SION
HIS
TORY
DESC
RIPT
ION
DATE
APPR
OVED
ECO
REV
KAUN
G H.
PROD
UCTI
ON1
29-
20-2
016
REVI
SION
HIS
TORY
DESC
RIPT
ION
DATE
APPR
OVED
ECO
REV
KAUN
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ON1
29-
20-2
016
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Tues
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Septe
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20, 2
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HIGH
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IEEE
802.3
bt (P
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Fax:
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7
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CA 95
035
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e: (4
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32-1
900
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linea
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Tues
day,
Septe
mber
20, 2
016
12
HIGH
EFF
ICIE
NCY
IEEE
802.3
bt (P
oE++
, Typ
e 3, 5
1W) P
D W
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TOO
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LT42
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CIR
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2539
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SIZE
DATE
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V.
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TOF
TITL
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APPR
OVAL
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APP
ENG.
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Fax:
(408
)434
-050
7
Milp
itas,
CA 95
035
Phon
e: (4
08)4
32-1
900
1630
McC
arth
y Blvd
.
LTC
Conf
iden
tial-F
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LINE
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www.
linea
r.com 2
Tues
day,
Septe
mber
20, 2
016
12
HIGH
EFF
ICIE
NCY
IEEE
802.3
bt (P
oE++
, Typ
e 3, 5
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D13
BAT4
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C16
0805
R33
OPT
expo
sed
pad,
sol
der
side
U1
LT42
95IU
FD
VPORT28
HSGATE26
HSSRC25
SWVCC23
DNC22
VCC21
VIN24
PG20
FB31
14
ISE
N-
16
ISE
N+
17
SG18
AU
X2
RC
LAS
S++
3
RC
LAS
S4
GND19
VCC6
VCC7
VCC8
T2P5
SFST11
RLDCMP15
VCC9
GND1
ITH
B13
FFSDLY12
NC27
ROSC10
GND_EP29
PBSS
4140
TQ
6 1
23
R20
150
0805
R18
10K
E11
D16
PTVS
58VS
1UR
21
R23
OPT
Q7
FMM
T723
32
1
E3
R10
5.62
KO
PTC
19
T1 EPC
3633
G-L
F
1
1186 4
7 12
5 2 3
PBSS
5140
TQ
5 1
23
R25
10K
Q2
TPH
1500
CN
H
6
4
5
87
123
R22
107K
R16
0 0805
D1
PMEG
1002
0
21
R17
2.00
K
220p
FC
9
1206
R6
3.3K
OPT
C21
R19
47.5 08
05
R9
3912
06
L3
6mH
UA8
085-
BL
43 2
1
220n
HL1
7443
1602
2
R3
75 1206
E9
C10
10nF 100V
2.2u
F10
0V12
10X7
R
C29
Q4
TPH
1500
CN
H
6
4
5
87
123
330p
F
C25
R15 15
R30
OPT
0805
R5
8.2
0805
R27 0
R31
0
D18
OPT
2 1
EPA4
271G
E
T31 3
6 4
C2
X5R
16V
1210
10uF
E4
ISO
1TL
P291
(GR
-TP,
E)
1 2
4 3
D17
PMEG
1020
EA
21
E2
2.2u
F10
0V12
10X7
R
C7
R7
20 0805
R14
20m
2010
E12
R4
75 1206
J4
0.04
7uF
C12 100V
HSS
OPT
L5
4.7n
FC
23
330p
FC
8
1206
2.2n
FC
20
R35
OPT
1uF
C17
+C
447
uF35
VEE
H-Z
A1V4
70P
R21
174K
R12 0
R11
5.23
K
100u
H
L4D
O16
08C
-104
+10
uF10
0V6.
3x7.
7
C6
D15
BAV1
9WS
21
R24
30K
R29
52.3
K
D4
LE
D
E6
+C
5O
PT
OPT
C1
OPT
C15
OPT
C27
6.3V
D19
PTVS
58VS
1UR
21
10uF
C13 10
V12
06
E5R
34
0
OPT
C18
C3
10uF
1210
X5R
16V
J3
R32
OPT
R8
3912
06
100p
FC
26
25V
0.1u
FC
24
R2 1.5K
R13
100
13dc2539aafb
DEMO MANUAL DC2539A-A
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
schematic Diagram5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
OU
T T
OPH
Y
IN F
RO
MPo
E+PS
E
PoE
IDEA
L D
IOD
E B
RID
GE
FLYB
ACK
DC-D
C CO
NVER
TER
AND
AUXI
LIAR
Y PO
WER
INPU
T
PO
E_C
T45
PO
E_C
T78
POE_
CT1
2
POE_
CT3
6
BG12
BG36
POE_
CT3
6
TG36
TG45
POE_
CT4
5PO
E_C
T12
POE_
CT7
8
TG12
BG45
TG45
BG36
TG36
BG12
TG78
BG78
VPOR
TN
BG78
POE_CT78
TG78
POE_
CT4
5
POE_CT12
POE_
CT3
6
TG12
BG45
VPOR
TN
VPOR
TP
VPO
RTN
VPO
RTP
REVI
SION
HIS
TORY
DESC
RIPT
ION
DATE
APPR
OVED
ECO
REV
KAUN
G H.
PROD
UCTI
ON1
29-
20-2
016
REVI
SION
HIS
TORY
DESC
RIPT
ION
DATE
APPR
OVED
ECO
REV
KAUN
G H.
PROD
UCTI
ON1
29-
20-2
016
REVI
SION
HIS
TORY
DESC
RIPT
ION
DATE
APPR
OVED
ECO
REV
KAUN
G H.
PROD
UCTI
ON1
29-
20-2
016
SIZE
DATE
:
IC N
O.RE
V.
SHEE
TOF
TITL
E:
APPR
OVAL
S
PCB
DES.
APP
ENG.
TEC
HN
OLO
GY
Fax:
(408
)434
-050
7
Milp
itas,
CA 95
035
Phon
e: (4
08)4
32-1
900
1630
McC
arth
y Blvd
.
LTC
Conf
iden
tial-F
or C
usto
mer
Use
Onl
y
CUST
OMER
NOT
ICE
LINE
AR T
ECHN
OLOG
Y HA
S MA
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HOW
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'S R
ESPO
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VERI
FY P
ROPE
R AN
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N. C
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DCI
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LAYO
UT M
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PERF
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TY.
CONT
ACT
LINE
ARTE
CHNO
LOGY
APP
LICA
TION
S EN
GINE
ERIN
G FO
R AS
SIST
ANCE
.
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O LI
NEAR
TEC
HNOL
OGY
AND
SCHE
MATI
C
SUPP
LIED
FOR
USE
WIT
H LI
NEAR
TEC
HNOL
OGY
PART
S.SC
ALE
= NO
NE
www.
linea
r.com 2
Tues
day,
Septe
mber
20, 2
016
22
HIGH
EFF
ICIE
NCY
IEEE
802.3
bt (P
oE++
, Typ
e 3, 5
1W) P
D W
ITH
K. H
TOO
K. H
TOO
N/A
LT42
95IU
FD, L
T432
1IUF
DEMO
CIR
CUIT
2539
A-A
SIZE
DATE
:
IC N
O.RE
V.
SHEE
TOF
TITL
E:
APPR
OVAL
S
PCB
DES.
APP
ENG.
TEC
HN
OLO
GY
Fax:
(408
)434
-050
7
Milp
itas,
CA 95
035
Phon
e: (4
08)4
32-1
900
1630
McC
arth
y Blvd
.
LTC
Conf
iden
tial-F
or C
usto
mer
Use
Onl
y
CUST
OMER
NOT
ICE
LINE
AR T
ECHN
OLOG
Y HA
S MA
DE A
BES
T EF
FORT
TO
DESI
GN A
CIRC
UIT
THAT
MEE
TS C
USTO
MER-
SUPP
LIED
SPE
CIFI
CATI
ONS;
HOW
EVER
, IT
REMA
INS
THE
CUST
OMER
'S R
ESPO
NSIB
ILIT
Y TO
VERI
FY P
ROPE
R AN
D RE
LIAB
LE O
PERA
TION
IN T
HE A
CTUA
LAP
PLIC
ATIO
N. C
OMPO
NENT
SUB
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N AN
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PERF
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BILI
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CONT
ACT
LINE
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CHNO
LOGY
APP
LICA
TION
S EN
GINE
ERIN
G FO
R AS
SIST
ANCE
.
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O LI
NEAR
TEC
HNOL
OGY
AND
SCHE
MATI
C
SUPP
LIED
FOR
USE
WIT
H LI
NEAR
TEC
HNOL
OGY
PART
S.SC
ALE
= NO
NE
www.
linea
r.com 2
Tues
day,
Septe
mber
20, 2
016
22
HIGH
EFF
ICIE
NCY
IEEE
802.3
bt (P
oE++
, Typ
e 3, 5
1W) P
D W
ITH
K. H
TOO
K. H
TOO
N/A
LT42
95IU
FD, L
T432
1IUF
DEMO
CIR
CUIT
2539
A-A
SIZE
DATE
:
IC N
O.RE
V.
SHEE
TOF
TITL
E:
APPR
OVAL
S
PCB
DES.
APP
ENG.
TEC
HN
OLO
GY
Fax:
(408
)434
-050
7
Milp
itas,
CA 95
035
Phon
e: (4
08)4
32-1
900
1630
McC
arth
y Blvd
.
LTC
Conf
iden
tial-F
or C
usto
mer
Use
Onl
y
CUST
OMER
NOT
ICE
LINE
AR T
ECHN
OLOG
Y HA
S MA
DE A
BES
T EF
FORT
TO
DESI
GN A
CIRC
UIT
THAT
MEE
TS C
USTO
MER-
SUPP
LIED
SPE
CIFI
CATI
ONS;
HOW
EVER
, IT
REMA
INS
THE
CUST
OMER
'S R
ESPO
NSIB
ILIT
Y TO
VERI
FY P
ROPE
R AN
D RE
LIAB
LE O
PERA
TION
IN T
HE A
CTUA
LAP
PLIC
ATIO
N. C
OMPO
NENT
SUB
STIT
UTIO
N AN
D PR
INTE
DCI
RCUI
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ARD
LAYO
UT M
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FICA
NTLY
AFF
ECT
CIRC
UIT
PERF
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NCE
OR R
ELIA
BILI
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CONT
ACT
LINE
ARTE
CHNO
LOGY
APP
LICA
TION
S EN
GINE
ERIN
G FO
R AS
SIST
ANCE
.
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O LI
NEAR
TEC
HNOL
OGY
AND
SCHE
MATI
C
SUPP
LIED
FOR
USE
WIT
H LI
NEAR
TEC
HNOL
OGY
PART
S.SC
ALE
= NO
NE
www.
linea
r.com 2
Tues
day,
Septe
mber
20, 2
016
22
HIGH
EFF
ICIE
NCY
IEEE
802.3
bt (P
oE++
, Typ
e 3, 5
1W) P
D W
ITH
K. H
TOO
K. H
TOO
N/A
LT42
95IU
FD, L
T432
1IUF
DEMO
CIR
CUIT
2539
A-A
1 2 3 6 4 5 7 8
4 X
12n
F
4 X
75
Ohm
s
1nF
2kV
J1 7499
5110
01A
TRD
1+11
TRC
T112
TRD
1-10
TRD
2+4
TRC
T26
TRD
2-5
TRD
3+3
TRC
T31
TRD
3-2
TRD
4+8
TRC
T47
TRD
4-9
VC
214
VC
113
VC
315
VC
416
SH
IELD
17S
HIE
LD18
CT3
6
D3
MM
SZ52
52BS
24V
21
CG
110
00pF
1808
2KV
Q17
PSM
N07
5-10
0MSE
6
4
5
87
123
D2
PTVS
58VS
1UR
21
Q11
PSM
N07
5-10
0MSE
6
4
5
87
123
CT4
5
RT4
75
CT7
8
R28 0
Q18
PSM
N07
5-10
0MSE
6
4
5
87
123
CG
20.
01uF
100V
1206
Q12
PSM
N07
5-10
0MSE
6
4
5
87
123
Q13
PSM
N07
5-10
0MSE
6
4
5
87
123
J2 SS-6
488S
-A-N
F
1 2 3 4 5 6 7 8
9 10
Q14
PSM
N07
5-10
0MSE
6
4
5
87
123
C11
0.04
7uF
100V
Q15
PSM
N07
5-10
0MSE
6
4
5
87
123
RT1
75
Q16
PSM
N07
5-10
0MSE
6
4
5
87
123
RT3
75
EP
U3
LT43
21IU
F
TG36
1
IN36
2
IN45
3
TG45
4
TG785
IN786
BG787
BG458
OU
TP12
EN
11
EN
10
OU
TN9
TG1216
IN1215
BG1214
BG3613
17O
UTN
CT1
2
RT2
75
14dc2539aafb
DEMO MANUAL DC2539A-A
© LINEAR TECHNOLOGY CORPORATION 2016
LT 0517 REV B • PRINTED IN USA
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions:
This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.
If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or agency certified (FCC, UL, CE, etc.).
No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.
Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and observe good laboratory practice standards. Common sense is encouraged.
This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application engineer.
Mailing Address:
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Copyright © 2004, Linear Technology Corporation