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1dc2046abf
DEMO MANUAL DC2046A-B
DESCRIPTION
LT4276, LT4321 PoE PD with Synchronous
Flyback and Ideal Diode Bridge
Demonstration circuit 2046A-B is a PoE Powered Device (PD) with an isolated power supply using synchronous flyback topology, featuring the LT®4276 and ideal diode bridge controller (LT4321).
The LT4276 provides IEEE802.3af (PoE, Type 1), IEEE802.3at (PoE+, Type 2), and LTPoE++™ PD in-terfacing and power supply control. When the PD is fully powered, the PD interface switches power over from the Power Sourcing Equipment (PSE) to the switcher through an external, low resistance, high power N-channel FET. The highly integrated LT4276 controls
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and LTPoE++ is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
PERFORMANCE SUMMARY
BOARD PHOTOS
a high power, small-sized power supply that utilizes a highly efficient flyback topology with synchronous rectification. The LT4321 provides further efficiency improvement by minimizing the bridge losses.
The DC2046A-B supplies a 5V output at up to 4.7A. It also demonstrates the use of an optional auxiliary power supply input of 48V. When present, the auxiliary supply becomes the dominant supply over PoE to provide power.
Design files for this circuit board are available at http://www.linear.com/demo/DC2046A-B
Specifications are at TA = 25°C
Top Side Bottom Side
PARAMETER CONDITIONS VALUE
Port Voltage (VPORT) At Ethernet Port 37V to 57V
Auxiliary Voltage From AUX+ to AUX– Terminals 37V to 57V
Output Voltage 5V (Typ)
Output Current 4.7A (Max)
Output Voltage Ripple VPORT = 42.5V, IOUT = 4.7A 30mVP-P (Typ)
Output Regulation ±0.2% (Typ)
Efficiency VPORT = 50V, IOUT = 4.7A, End to End 92% (Typ)
Switching Frequency 250kHz (Typ)
2dc2046abf
DEMO MANUAL DC2046A-B
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 2. Efficiency (End to End)
Top Side Bottom Side
Figure 1. Thermal Pictures – VPORT = 42.5V, 5V/4.7A
Figure 3. Output Voltage Regulation
LOAD CURRENT (A)0.5
78
EFFI
CIEN
CY (%
)
80
82
84
3.5 4.0 4.5
94
92
DC2046A-B F02
1.0 1.5 2.0 2.5 3.0 5.0
86
88
90
VPORT = 42.5VVPORT = 50VVPORT = 57V
LOAD CURRENT (A)0.5
4.80
V OUT
(V)
4.90
4.95
5.00
3.5 4.0 4.5
5.20
DC2046A-B F03
4.85
1.0 1.5 2.0 2.5 3.0 5.0
5.05
5.10
5.15
VPORT = 42.5VVPORT = 50VVPORT = 57V
3dc2046abf
DEMO MANUAL DC2046A-B
Figure 5. Output Voltage Ripple (VPORT = 42.5V, 5V/4.7A)
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 4. Stresses (VPORT = 57V, 5V/4.7A)
4dc2046abf
DEMO MANUAL DC2046A-B
Figure 6. Load Transient Response (VPORT = 42.5V, 2.35A to 4.7A to 2.35A)
Figure 7. Gain and Phase Margin of the Flyback Loop (VPORT = 42.5V, 5V/0.47A)
TYPICAL PERFORMANCE CHARACTERISTICS
5dc2046abf
DEMO MANUAL DC2046A-B
QUICK START PROCEDURE
Figure 8. Proper Measurement Equipment Setup
Demonstration circuit 2046A-B is easy to set up to evalu-ate the performance of the LT4276 in a PoE+ application. Refer to Figure 8 for proper equipment setup and follow the procedure below.
NOTE: When measuring the input or output voltage ripple, care must be taken to avoid a long ground lead on the oscilloscope probe. Measure the output voltage ripple by touching the probe tip and probe ground directly across the +VOUT and –VOUT terminals. See Figure 9 for proper scope probe technique.
1. Place test equipment (voltmeter, ammeter, power sup-plies, and electronic load) as shown in Figure 8.
2. Input supplies:
A) Connect a PoE+ capable PSE with a CAT-5 cable to the RJ45 connector, J1. See Figure 8.
B) Or, connect a 37V to 57V capable power supply (Power Supply in Figure 8) across VPORTP and VPORTN.
C) If evaluating the auxiliary power supply (Auxiliary Supply in Figure 8), connect a 37V to 57V capable power supply across AUX+ to AUX–.
3. Check for the proper output voltage of 5V.
4. Once the proper output voltage is confirmed, adjust the load within the operating range and observe the output voltage regulation, ripple voltage, efficiency, and other parameters.
6dc2046abf
DEMO MANUAL DC2046A-B
Figure 9. Measuring Output Ripple
QUICK START PROCEDURE
GND
VIN
7dc2046abf
DEMO MANUAL DC2046A-B
PARTS LISTITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
DC2046A 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 12061C103AT2A
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 10% 6.3 × 7.7 SunCon 100CE10BS
6 1 C7 Cap, Cer, X7R 2.2µF 100V 10% 1210 Murata GRM32ER72A225KA35
7 1 C10 Cap, Cer, X7R 10nF 100V 20% 0603 Murata GRM188R72A103KA01D
8 1 C11 Cap, Cer, X7R 0.047µF 100V 20% 0603 Kemet C0603C473M1RACTU
9 1 C12 Cap, Cer, X7R 0.047µF 100V 10% 0805 Murata GRM21BR72A473KA01L
10 1 C13 Cap, Cer, X7R 10uF 10V 10% 1206 Murata GRM31CR71A106KA01L
11 0 C15, C18, C19, C21 Cap, Cer, X5R Opt 2kV 20% 1812 Opt
12 1 C17 Cap, Cer, X7R 1µF 25V 10% 0603 Murata GRM188R71E105KA12
13 1 C20 Cap, Cer, X7R 2.2nF 25V 10% 0603 Murata GRM188R71E222KA01
14 1 C23 Cap, Cer, X7R 4.7nF 2kV 10% 1812 Murata GR443DR73D472KW01L
15 1 C26 Cap, Cer, X5R 100pF 16V 10% 0402 AVX 0402YC101KAT2A
16 0 C27 Cap, Cer, X7R Opt 6.3V 10% 0402 Opt
17 1 D1 Diode, Schottky, B2100 100V SMB Diodes Inc. B2100-13-F
18 1 D2 Diode, TVS, PTVS58VS1UR 58V SOD123 NXP PTVS58VS1UR
19 1 D3 Diode, Zener, MMSZ5252BS 24V SOD323 Diodes Inc. MMSZ5252BS
20 1 D4 Diode, Led Green ROHM SML-010FTT86L
21 1 D13 Diode, Schottky, NXP, BAT46W 100V SOD323 NXP BAT46WJ,115
22 1 D15 Diode, Diodes Inc., BAV19WS 120V SOD323 Diodes Inc. BAV19WS
23 1 D16 Diode, TVS, PTVS58VS1UR 58V SOD123 NXP PTVS58VS1UR
24 1 D17 Diode, Schottky, BAT54WS 30V SOD323 Diodes Inc BAT54WS
25 1 D19 Diode, TVS, PTVS58VS1UR 58V SOD123 NXP PTVS58VS1UR
26 7 E1, E2, E3, E4, E9, E10, E12 TP, Turret, PAD150-094 0.094 Mill-Max 2501-2-00-80-00-00-07-0
27 1 J1 Conn, Integrated Jack, 7499511001 Würth 7499511001
28 1 J2 Conn, RJ45 Jack, SS-6488-NF-K1 Stewart Connector SS-6488-NF-K1 Alternate: SS-6488S-A-NF
29 1 L2 Ind, 10µH Coilcraft DO1608C-103
30 1 L4 Ind, 100µH Coilcraft DO1608C-104
31 9 Q1, Q11, Q12, Q13, Q14, Q15, Q16, Q17, Q18
MOSFET, N-CH, PSMN075-100MSE 100V LFPAK33 NXP PSMN075-100MSE
32 1 Q5 Tran, PNP, MMBT3906 40V SOT23 Fairchild MMBT3906
33 1 Q6 Tran, NPN, MMBT3904 40V SOT23 Fairchild MMBT3904
34 1 Q7 Tran, PNP, FMMT723 100V SOT23 Diodes Inc. FMMT723TA
34 0 Q7 (ALTERNATE) Tran, PNP, PBSS9110T 100V SOT23 NXP PBSS9110T
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
8dc2046abf
DEMO MANUAL DC2046A-B
PARTS LISTITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
38 1 R7 Res, Chip, 20Ω 5% 0805 Vishay CRCW080520R0JNEA
39 1 R12 Res, Chip, 0Ω 5% 0603 NIC NRC06ZOTRF
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 1 R27 Res, Chip, 0Ω 5% 0402 NIC NRC04ZOTRF
47 1 R28 Res, Chip, 0Ω 5% 0603 NIC NRC06ZOTRF
48 1 R29 Res, Chip, 52.3k 1% 0603 Vishay CRCW060352K3FKEA
49 0 R32 Res, Chip, Opt 5% 1812 Opt
50 1 T3 XFMR, SMD Gate Drive, PE-68386NL Pulse PE-68386NL
50 0 T3 (Alternate) XFMR, SMD Gate Drive, EPA4271GE PCA EPA4271GE
51 0 T4 XFMR, SMD Gate Drive, OPT Opt
52 1 U3 IC, PoE Ideal Bridge Controller, LT4321IUF QFN16 Linear Technology LT4321IUF
DC2046A-B BOM
1 1 C2 Cap, Cer, X7R 22µF 6.3V 10% 1206 Murata GRM31CR70J226KE19
2 1 C3 Cap, Cer, X7R 22µF 6.3V 10% 1206 Murata GRM31CR70J226KE19
3 1 C4 Cap, Elec, 47µF 6.3V 20% 5.0 × 5.3 Panasonic 6SVP47M
4 1 C8 Cap, Cer, U2J 1nF 630V 5% 1206 Murata GRM31A7U2J102JW31D
5 1 C9 Cap, Cer, U2J 100pF 630V 5% 1206 Murata GRM31A7U2J101JW31D
6 1 C16 Cap, Cer, X7R 1µF 25V 10% 0805 Murata GRM21BR71E105KA99L
7 1 C22 Cap, Cer, X7R 3.3nF 25V 10% 0603 Murata GRM188R71E332KA01
8 1 C24 Cap, Cer, X7R 0.1µF 25V 20% 0603 Murata GRM188R71E104KA01D
9 1 C25 Cap, Cer, X7R 220pF 25V 10% 0603 AVX 06033C221KAT4A
10 0 D18 Diode, Diodes Inc., Opt 40V SOD323 Diodes Inc. Opt
11 1 E11 TP, Turret, PAD150-094 0.094" Mill-Max 2501-2-00-80-00-00-07-0
12 1 L1 Ind, 180nH Coilcraft DO1813P-181HC
13 1 L3 Ind, CMC, 3.3mH Würth 744272332
13 0 L3 (Alternate) Ind, CMC, 3.3mH PCA EPA4411
14 1 Q2 MOSFET, N-CH, PSMN2R4-30MLD 30V LFPAK33 NXP PSMN2R4-30MLD
15 0 Q3 MOSFET, N-CH, Opt SOT23 Opt
16 1 Q4 MOSFET, N-CH, 150V TDSON-8 Infineon BSZ520N15NS3G
17 1 R2 Res, Chip, 620Ω 5% 0805 NIC NRC10J621TRF
18 1 R3 Res, Chip, 160Ω 5% 1206 Vishay CRCW1206160RJNEA
19 1 R4 Res, Chip, 160Ω 5% 1206 Vishay CRCW1206160RJNEA
20 1 R8 Res, Chip, 5.1Ω 5% 1206 NIC NRC12J5R1TRF
21 0 R9 Res, Chip, Opt 5% 1206 Opt
22 1 R10 Res, Chip, 5.9k 1% 0603 Vishay CRCW06035K90FKEA
23 1 R11 Res, Chip, 7.50k 1% 0603 Vishay CRCW06037K50FKEA
9dc2046abf
DEMO MANUAL DC2046A-B
PARTS LISTITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
24 1 R14 Res, Chip, 40mΩ 1% 1206 Vishay WSL1206R0400FEA
25 1 R16 Res, Chip, 0Ω, Shunt, 0805 Vishay CRCW08050000Z0EA
26 0 R19 Res, Chip, Opt 1% 0805 Opt
27 1 R20 Res, Chip, 35.7Ω 1% 0805 Vishay CRCW080535R7FKEA
28 0 R23 Res, Chip, Opt 5% 0603 Opt
29 1 R24 Res, Chip, 20k 5% 0603 Vishay CRCW060320K0FKEA
30 1 R25 Res, Chip, 47k 5% 0603 NIC NRC06J473TRF
31 1 R26 Res, Chip, 10k 5% 0603 Yageo RC0603JR-0710KL
32 0 R30 Res, Chip, Opt 5% 0805 Opt
33 0 R31 Res, Chip, Opt, Shunt, 2512 Opt
34 1 T1 XFMR, Flyback Tran, 750313082 Würth 750313082
34 0 T1 (Alternate) XFMR, Flyback Tran, EPC3409G PCA EPC3409G
35 0 T2 XFMR, Flyback Tran, Opt Opt
36 1 U1 IC, PD & Switcher Controller, LT4276BIUFD QFN28 Linear Technology LT4276BIUFD
37 1 U2 Opto, MOC207 SO8 Fairchild MOC207M
38 1 Fab, Printed Circuit Board Demo Circuit 2046A
10dc2046abf
DEMO MANUAL DC2046A-B
5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
VPO
RTP
T2P
-VO
UT
+VO
UT
VPO
RTN
___
GN
D
AU
X+
AU
X-
5V/4
.7A
ASSE
MBLY
VER
SION
OUTP
UTU1
DC20
46A-
ADC
2046
A-B
DC20
46A-
CDC
2046
A-D
DC20
46A-
EDC
2046
A-F
3.3V/
6.8A
5V/4.
7A12
V/1.9
A24
V/0.9
5A5V
/7A5V
/2.3A
LT42
76BI
UFD
LT42
76BI
UFD
LT42
76BI
UFD
LT42
76BI
UFD
LT42
76AI
UFD
LT42
76CI
UFD
37V-
57V
37V-
57V
OPTI
ONAL
COM
PONE
NTS
VSEC
_P
VPR
I_SG
VAU
X_P
SG
VPR
I_SW
PG
VPR
I_P
VAU
X_P
VSEC
_SW
VSEC
_SW
VSEC
_P
VPR
I_SW
VSEC
_P
VPR
I_P
PG
VPR
I_SG
VSEC
_SG
VSEC
_SG
VAU
X_P
VSEC
_P
+VO
UT
+VO
UT
VPO
RTP
+VO
UT
VCC
VCC
VPO
RTP
VPO
RTNREVI
SION
HIS
TORY
DESC
RIPT
ION
DATE
APPR
OVED
ECO
REV
KAUN
G H.
PROD
UCTI
ON1
41-
7-20
15
REVI
SION
HIS
TORY
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ION
DATE
APPR
OVED
ECO
REV
KAUN
G H.
PROD
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ON1
41-
7-20
15
REVI
SION
HIS
TORY
DESC
RIPT
ION
DATE
APPR
OVED
ECO
REV
KAUN
G H.
PROD
UCTI
ON1
41-
7-20
15
SIZE
DATE
:
IC N
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V.
SHEE
TOF
TITL
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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
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LTC
Conf
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Wedn
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, 201
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HIGH
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LT42
76BI
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LT4
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46A-
BSI
ZE
DATE
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IC N
O.RE
V.
SHEE
TOF
TITL
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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
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LINE
AR T
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SUPP
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FOR
USE
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PART
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www.
linea
r.com 4
Wedn
esda
y, Ap
ril 01
, 201
51
2
HIGH
EFF
ICIE
NCY
POE
PD IN
TERF
ACE
WIT
H IN
TEGR
ATED
SW
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REGU
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N/A
LT42
76BI
UFD,
LT4
321I
UFDE
MO C
IRCU
IT 20
46A-
BSI
ZE
DATE
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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
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SUPP
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CIFI
CATI
ONS;
HOW
EVER
, IT R
EMAI
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USTO
MER'
S RE
SPON
SIBI
LITY
TO
VERI
FY P
ROPE
R AN
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IN T
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CTUA
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PLIC
ATIO
N. C
OMPO
NENT
SUB
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N AN
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INTE
DCI
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PERF
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ONTA
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INEA
RTE
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
MAT
IC
SUPP
LIED
FOR
USE
WIT
H LI
NEAR
TEC
HNOL
OGY
PART
S.SC
ALE
= NO
NE
www.
linea
r.com 4
Wedn
esda
y, Ap
ril 01
, 201
51
2
HIGH
EFF
ICIE
NCY
POE
PD IN
TERF
ACE
WIT
H IN
TEGR
ATED
SW
ITCH
ING
REGU
LATO
R
K. H
TOO
K. H
TOO
N/A
LT42
76BI
UFD,
LT4
321I
UFDE
MO C
IRCU
IT 20
46A-
B
D19
PTVS
58VS
1UR
D19
PTVS
58VS
1UR
21
HSS
HSS
R31
OPT
2512
R31
OPT
2512
E12
E12
1uF
C16
0805
25V
1uF
C16
0805
25V
R13
100
R13
100
1nFC
8
1206
1nFC
8
1206
R16
0 0805
R16
0 0805
R8
5.1
1206R
85.
112
06
T4
OPT
T4
OPT
1 4
2 3
T1 7503
1308
2T1 75
0313
082
5
691 3
10 7
2
82.
2uF
100V
1210
X7R
C7
2.2u
F10
0V12
10X7
R
C7
C5
OPTC5
OPT
E9E9
R19
OPT 08
05
R19
OPT 08
05
R2 620
R2 620
R32
OPT
R32
OPT
OPT
C27
0402
OPT
C27
0402
1uF
C17
1uF
C17
D1
B210
0D
1B2
100
21
0.04
7uF
C12 100V
0.04
7uF
C12 100V
E4E4
expo
sed
pad,
sol
der s
ide
U1
LT42
76BI
UFD
expo
sed
pad,
sol
der s
ide
U1
LT42
76BI
UFD
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
R11
7.50
KR
117.
50K
PE-6
8386
NL
T3
PE-6
8386
NL
T31 3
6 4
E3E3
D16
PTVS
58VS
1UR
D16
PTVS
58VS
1UR
21
100p
FC
26
25V
0402
100p
FC
26
25V
0402
100u
H
L4D
O16
08C
-104
100u
H
L4D
O16
08C
-104
U2
MO
C20
7U
2M
OC
207
17
2
6 5
D13
BAT4
6WJ,
115
D13
BAT4
6WJ,
115
1 2
R29
52.3
KR
2952
.3K
220p
F
C25
220p
F
C25
10uH
L2
Coi
lcra
ftD
O16
08C
-103
10uH
L2
Coi
lcra
ftD
O16
08C
-103
L3
3.3m
H74
4272
332
L3
3.3m
H74
4272
332
12 3
4
OPT
C1
OPT
C1
R12 0
R12 0
+10
uF10
0V6.
3x7.
7
C6
+10
uF10
0V6.
3x7.
7
C6
R14
40m
1206
R14
40m
1206
E2E2
E10
E10
R5
8.2
0805
R5
8.2
0805
C10
10nF 0603
100V
C10
10nF 0603
100V
R17
2.00
KR
172.
00K
R22
107K
R22
107K
MM
BT39
06Q
5M
MBT
3906
Q5 1
23
OPT
C15
OPT
C15
E1E1
R7
20 0805
R7
20 0805
180n
HL1
CO
ILC
RAF
TD
O18
13P-
181H
C
180n
HL1
CO
ILC
RAF
TD
O18
13P-
181H
C
R3
160
1206
R3
160
1206
Q2
PSM
N2R
4-30
MLD
Q2
PSM
N2R
4-30
MLD
6
4
5
87
123
4.7n
FC
23
2KV
4.7n
FC
23
2KV
R15 15R15 15
OPT
C21
OPT
C21
Q3
OPT
Q3
OPT
3
1
2
Q1
PSM
N07
5-10
0MSE
Q1
PSM
N07
5-10
0MSE
6
4
58 7123
0.1u
FC
240.
1uF
C24
R25
47K
R25
47K
R4
160
1206R4
160
1206
D18
OPT
D18
OPT
2 1
R30
OPT
0805
R30
OPT
0805
R24
20K
R24
20K
E11
E11
Q7
FMM
T723Q7
FMM
T723
32
1
R20
35.7
0805R20
35.7
0805
R18
10K
R18
10K
+C
447
uF6.
3V6S
VP47
M
+C
447
uF6.
3V6S
VP47
M
D15
BAV1
9WS
D15
BAV1
9WS
21
OPT
C19
OPT
C19
C3
22uF
6.3V
1206
X7R
C3
22uF
6.3V
1206
X7R
R27 0
0402
R27 0
0402
T2 *T2 *
4
671 3
8 5
2
R9
OPT
1206R
9O
PT12
06
3.3n
F
C22
3.3n
F
C22
R26
10K
R26
10K
2.2n
FC
202.
2nF
C20C
2
X7R
6.3V
1206
22uF
C2
X7R
6.3V
1206
22uF
D4
LE
DD
4L
ED
R21
174K
R21
174K
Q4
BSZ5
20N
15N
S3G
Q4
BSZ5
20N
15N
S3G
6
4
5
87
123
100p
FC
9
1206
100p
FC
9
1206
MM
BT39
04Q
6M
MBT
3904
Q6 1
23
OPT
C18
OPT
C18
10uF
C13
16V
120610uF
C13
16V
1206
D17
BAT5
4WS
D17
BAT5
4WS
21
R6
3.3K
R6
3.3K
R10
5.90
KR
105.
90K
R23
OPT
R23
OPT
SCHEMATIC DIAGRAM
11dc2046abf
DEMO MANUAL DC2046A-B
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
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E B
RID
GE
DA
TA2-
1
DA
TA2-
2
DAT
A1-1
DAT
A1-2
BG12
BG36
DAT
A1-2
TG36
TG45
DAT
A2-1
DAT
A1-1
DAT
A2-2
TG12
BG45
TG45
BG36
TG36
BG12
TG78
BG78
VPOR
TN
BG78
DATA2-2
TG78
DAT
A2-1
DATA1-1
DAT
A1-2
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
41-
7-20
15
REVI
SION
HIS
TORY
DESC
RIPT
ION
DATE
APPR
OVED
ECO
REV
KAUN
G H.
PROD
UCTI
ON1
41-
7-20
15
REVI
SION
HIS
TORY
DESC
RIPT
ION
DATE
APPR
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ECO
REV
KAUN
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ON1
41-
7-20
15
SIZE
DATE
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APPR
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DES.
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ENG.
TEC
HN
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GY
Fax:
(408
)434
-050
7
Milp
itas,
CA 95
035
Phon
e: (4
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32-1
900
1630
McC
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Conf
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Fax:
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CA 95
035
Phon
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r.com 4
Tues
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March
31, 2
015
22
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Fax:
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-050
7
Milp
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CA 95
035
Phon
e: (4
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32-1
900
1630
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Tues
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March
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015
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D3
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21
CG
110
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2KV
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PTVS
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21
Q11
PSM
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5-10
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PSM
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5-10
0MSE
6
4
5
87
123
DAT
A2-1
DAT
A2-1
RT4
75RT4
75
DAT
A2-2
DAT
A2-2
R28 0R28 0
Q18
PSM
N07
5-10
0MSE
Q18
PSM
N07
5-10
0MSE
6
4
5
87
123
CG
20.
01uF
100V
1206
CG
20.
01uF
100V
1206
Q12
PSM
N07
5-10
0MSE
Q12
PSM
N07
5-10
0MSE
6
4
5
87
123
Q13
PSM
N07
5-10
0MSE
Q13
PSM
N07
5-10
0MSE
6
4
5
87
123
1 2 3 6 4 5 7 8
4 X
12n
F
4 X
75
Ohm
s
1nF
2kV
J1 7499
5110
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1 2 3 6 4 5 7 8
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12n
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4 X
75
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s
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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
J2 SS-6
488S
-A-N
F
J2 SS-6
488S
-A-N
F
1 2 3 4 5 6 7 8
9 10
Q14
PSM
N07
5-10
0MSE
Q14
PSM
N07
5-10
0MSE
6
4
5
87
123
C11
0.04
7uF
100V
C11
0.04
7uF
100V
Q15
PSM
N07
5-10
0MSE
Q15
PSM
N07
5-10
0MSE
6
4
5
87
123
RT1
75RT1
75
Q16
PSM
N07
5-10
0MSE
Q16
PSM
N07
5-10
0MSE
6
4
5
87
123
RT3
75RT3
75
EP
U3
LT43
21IU
F
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
DAT
A1-1
DAT
A1-1
RT2
75RT2
75
12dc2046abf
DEMO MANUAL DC2046A-B
Linear Technology Corporation1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear.com LINEAR TECHNOLOGY CORPORATION 2015
LT 0515 • PRINTED IN USA
DEMONSTRATION BOARD IMPORTANT NOTICE
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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.
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