Linear Technology DC2475A-A Guida rapida alla configurazione

dc2475aafb

DEMO MANUAL

DC2475A-A

Description

LT4295, LT4321

High Efficiency IEEE802.3bt (PoE++, Type 3,

40W) PD with PoE Ideal Diode Bridge

Demonstrationcircuit2475A-AisanIEEE802.3bt (Draft2.0)

compliant Power over Ethernet (PoE) powered device(PD).

It features the LT

4295 PD interface and switching regulator

controller with 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 and 4) compliant interfacing and power supply

control. It utilizes an external, low RDS(ON) (57mΩ typi-

cal) 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 synchro-

nous rectification.

The LT4321 controls eight low RDS(ON) (57mΩ typical)

N-channel FETs to further improve end-to-end power

L, LT, LTC, LTM, Linear Technology, the Linear logo and LTPoE++ are registered trademarks of

Analog Devices, Inc. All other trademarks are the property of their respective owners.

performance summary

BoarD photo

delivery efficiency and ease thermal design. This solution

replaces the eight diodes typically found in a passive PoE

rectifier bridge.

The DC2475A-A accepts up to 40W 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 DC2475A-A supplies a 12V output at up to 3A.

Design files for this circuit board are available at

http://www.linear.com/demo/DC2475A-A

Top 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) 3A (Max)

Output Voltage Ripple VPORT = 44V, IOUT = 3A 85mVP-P (Typical)

Load Regulation ±0.1% (Typical)

Efficiency VPORT = 50V, IOUT = 3A, End-to-End 92% (Typical)

Switching Frequency 250kHz (Typical)

Bottom Side

dc2475aafb

DEMO MANUAL

DC2475A-A

typicaL performance characteristics

Top Side Bottom Side

Figure 1. Thermal Pictures (Conditions: VPORT = 44V, VOUT = 12V, IOUT = 3A)

Figure 2. Efficiency (End-to-End)

LOAD CURRENT (A)

0.5

1.5

2.5

100

EFFICIENCY (%)

DC2475AA F02

44V

50V

57V

VPORT

Figure 3. Load Regulation

LOAD CURRENT (A)

0.5

1.5

2.5

11.80

11.85

11.90

11.95

12.00

12.05

12.10

12.15

12.20

VOUT (V)

DC2475AA F03

44V

50V

57V

VPORT

dc2475aafb

DEMO MANUAL

DC2475A-A

Figure 4. Switch Node Waveforms (Conditions: VPORT = 57V, VOUT = 12V, IOUT = 3A)

Figure 5. Output Voltage Ripple (Conditions: VPORT = 44V, VOUT = 12V, IOUT = 3A)

typicaL performance characteristics

dc2475aafb

DEMO MANUAL

DC2475A-A

Figure 6. Load Transient Response (Conditions: VPORT = 44V, Load Step: 1.5A to 3A to 1.5A)

Figure 7. Gain and Phase Margin of the Flyback DC/DC Converter (Conditions: VPORT = 44V, VOUT = 12V, IOUT = 3A)

typicaL performance characteristics

CROSSOVER FREQUENCY (kHz) GAIN MARGIN (dB) PHASE MARGIN (deg)

5 20 64

dc2475aafb

DEMO MANUAL

DC2475A-A

QuicK start proceDure

Power over Ethernet (PoE) Input

1. Disconnect auxiliary supply if it is connected to AUX+

and AUX– inputs of the DC2475A-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 DC2475A using a

CAT5e or CAT6 Ethernet cable. (See note.)

5. After the LED (D4) on the DC2475A is lit, check the

output voltage using a voltmeter. Output voltage should

be within 12.0V ± 0.2V.

Figure 8. Setup Diagram for PoE Input

6. Turn on the electronic load and increase its load cur-

rent up to 3A. 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 connected

to the DC2475A-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 DC2475A-A. The

LTPoE++ classificationwillnotbe802.3bt compliant, but

the PSE will provide a compatible detection and power

output. Specifically, the T2P output of the DC2475A-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.

Table 1. T2P Response vs PSE Type

PSE T2P RESPONSE NEGOTIATED PD INPUT POWER

IEEE

Logic High 13W

Logic Low 25.5W

50% Logic High/50% Logic Low, Toggle at 976Hz ±7% 40W

LTPoE++, 52.7W Logic Low 40W

IEEE 802.3bt

PSE

–

DC POWER

SUPPLY

–

AMMETER

–

VOLTMETER

–

ELECTRONIC

LOAD

–

OSCILLOSCOPE

–

CAT5e

OR CAT6

CABLE

dc2475aafb

DEMO MANUAL

DC2475A-A

Figure 9: Setup Diagram for Auxiliary Supply Input

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

DC2475A 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 proceDure

4. Once the LED (D4) on the DC2475A 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 3A. 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 provided in Table 2.

Table 2. T2P Response During Auxiliary Power Operation

T2P RESPONSE PD OUTPUT POWER (W)

75% Logic High/25% Logic Low, Toggle at 976Hz ±7% 36

AMMETER

–

VOLTMETER

–

ELECTRONIC

LOAD

–

OSCILLOSCOPE

–

AUXILIARY SUPPLY

+–

dc2475aafb

DEMO MANUAL

DC2475A-A

parts List

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

DC2475A 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 10% 6.3x7.7 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 10µF 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 1812 MURATA GR443DR73D472KW01L

15 1 C26 CAP, CER, X7R 100pF 16V 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, DIODE INC, BAV19WS 120V SOD323 DIODE INC BAV19WS

23 1 D16 DIODE, TVS, PTVS58VS1UR 58V SOD123 NXP PTVS58VS1UR

24 1 D17 DIODE, SCHOTTKY, PMEG1020EA 10V SOD323 NXP PMEG1020EA

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 WURTH 7499511001A

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

dc2475aafb

DEMO MANUAL

DC2475A-A

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

31 9 Q1, Q11, Q12, Q13,

Q14, Q15, Q16, Q17,

Q18

MOSFET, N-CH, PSMN075-100MSE 100V LFPAK33 NXP PSMN075-100MSE

32 1 Q5 TRANSISTOR, PNP, MMBT3906 40V SOT23 FAIRCHILD MMBT3906

33 1 Q6 TRANSISTOR, NPN, MMBT3904 40V SOT23 FAIRCHILD MMBT3904

34 1 Q7 TRAN, PNP, FMMT723 100V SOT23 DIODES INC FMMT723TA

35 0 Q7 (ALTERNATE) TRAN, PNP, PBSS9110T 100V SOT23 NXP PBSS9110T

36 4 RT1, RT2, RT3, RT4 RES, CHIP, 75Ω 5% 0603 NIC NRC06J750TRF

37 1 R5 RES, CHIP, 8.2Ω 5% 0805 NIC NRC10J8R2TRF

38 1 R6 RES, CHIP, 3.3k 5% 0603 NIC NRC06J332TRF

39 1 R7 RES, CHIP, 20Ω 5% 0805 VISHAY CRCW080520R0JNEA

40 1 R12 RES, CHIP, 0Ω 5% 0603 NIC NRC06ZOTRF

41 1 R13 RES, CHIP, 100Ω 5% 0603 VISHAY CRCW0603100RFKEA

42 1 R15 RES, CHIP, 15Ω 5% 0603 NIC NRC06J150TRF

43 1 R17 RES, CHIP, 2.00k 1% 0603 NIC NRC06F2001TRF

44 1 R18 RES, CHIP, 10k 5% 0603 YAGEO RC0603JR-0710KL

45 1 R21 RES, CHIP, 174k 1% 0603 VISHAY CRCW0603174KFKEA

46 1 R22 RES, CHIP, 107k 1% 0603 NIC NRC06F1073TRF

47 1 R27 RES, CHIP, 0Ω 5% 0402 NIC NRC04ZOTRF

48 1 R28 RES, CHIP, 0Ω 5% 0603 NIC NRC06ZOTRF

49 1 R29 RES, CHIP, 52.3k 1% 0603 VISHAY CRCW060352K3FKEA

50 0 R32 RES, CHIP, OPT 5% 1812 OPT

51 1 T3 XFMR, SMD GATE DRIVE, PE-68386NL PULSE PE-68386NL

52 0 T3 (ALTERNATE) XFMR, SMD GATE DRIVE, EPA4271GE PCA EPA4271GE

53 1 U3 IC, PoE IDEAL BRIDGE CONTROLLER, LT4321IUF QFN16 LINEAR TECH LT4321IUF#PBF

54 2 STENCIL (TOP AND BOTTOM) STENCIL DC2475A

DC2475A-A

1 DC2475A – GENERAL BOM

1 1 C2 CAP, CER, X5R 10µF 16V 10% 1206 MURATA GRM31CR61C106KA88

2 1 C3 CAP, CER, X5R 10µF 16V 10% 1206 MURATA GRM31CR61C106KA88

3 1 C4 CAP, ELEC, 33µF 25V 20% 5.0X5.8 PANASONIC EEHZA1E330R

4 1 C8 CAP, CER, U2J 470pF 630V 5% 1206 MURATA GRM31A7U2J471JW31D

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 AVX 06033C332KAT2A

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, DIODE INC, OPT 40V SOD323 DIODE 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, 1mH WURTH 744 272 102

parts List

dc2475aafb

DEMO MANUAL

DC2475A-A

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

14 1 Q2 MOSFET, N-CH, 100V TSON TOSHIBA TPN1600ANH

15 0 Q3 MOSFET, N-CH, OPT SOT23 OPT

16 1 Q4 MOSFET, N-CH, 200V TDSON-8 INFINEON BSZ900N20NS3

17 1 R2 RES, CHIP, 1.5k 5% 0805 NIC NRC10J152TRF

18 1 R3 RES, CHIP, 200Ω 5% 1206 NIC NRC12F2000TRF

19 1 R4 RES, CHIP, 200Ω 5% 1206 NIC NRC12F2000TRF

20 1 R8 RES, CHIP, 27Ω 5% 1206 VISHAY CRCW120627R0JNEA

21 1 R9 RES, CHIP, 27Ω 5% 1206 VISHAY CRCW120627R0JNEA

22 1 R10 RES, CHIP, 6.65k 1% 0603 NIC NRC06F6651TRF

23 1 R11 RES, CHIP, 7.50k 1% 0603 VISHAY CRCW06037K50FKEA

24 1 R14 RES, CHIP, 25mΩ 1% 1206 VISHAY WSL1206R0250FEA

25 1 R16 RES, CHIP, 0Ω, SHUNT, 0805 VISHAY CRCW08050000Z0EA

26 1 R19 RES, CHIP, 37.4Ω 1% 0805 VISHAY CRCW080537R4FKEA

27 1 R20 RES, CHIP, 1.00Ω 1% 0805 VISHAY CRCW08051K00FKEA

28 0 R23 RES, CHIP, OPT 5% 0603 OPT

29 1 R24 RES, CHIP, 26.1k 5% 0603 VISHAY CRCW060326K1FKEA

30 1 R25 RES, CHIP, 10k 5% 0603 YAGEO RC0603JR-0710KL

31 1 R26 RES, CHIP, 5.1k 5% 0603 YAGEO RC0603JR-075K1L

32 0 R30 RES, CHIP, OPT 5% 0805 OPT

33 0 R31 RES, CHIP, SHUNT, 2512 OPT

34 1 T1 XFMR, FLYBACK TRAN, 750316115 WURTH 750316115

35 0 T1 (ALTERNATE) XFMR, FLYBACK TRAN, EPC3634G PCA EPC3634G

36 0 T2 XFMR, FLYBACK TRAN, OPT OPT

37 1 U1 IC, PD AND SWITCHER CONTROLLER, LT4295IUFD QFN28 LINEAR TECH LT4295IUFD

38 1 U2 IC, TRANSISTOR OUTPUT OPTOCOUPLER, SO-8 FAIRCHILD SEMI, MOC207M

39 4 MH1-MH4 STAND-OFF, NYLON 0.50" TALL (SNAP ON) KEYSTONE 8833

40 1 FAB, PRINTED CIRCUIT BOARD DEMO CIRCUIT 2475A

parts List

dc2475aafb

DEMO MANUAL

DC2475A-A

schematic Diagram

D D

C C

B B

A A

VPORTP

T2P

-VOUT

+VOUT

VPORTN

___

GND

AUX+

AUX-

12V/3A

OPTIONAL COMPONENTS

37V-57V

+VOUT

VPORTP

+VOUT

VCC

VPORTP

VPORTN

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

KAUNG H.

PRODUCTION1 2 3-3-2016

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

KAUNG H.

PRODUCTION1 2 3-3-2016

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

KAUNG H.

PRODUCTION1 2 3-3-2016

SIZE

DATE:

IC NO. REV.

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

Thursday, June 02, 2016

HIGH EFFICIENCY IEEE802.3bt PD WITH PoE IDEAL DIODE BRIDGE

K. HTOO

N/A

LT4295IUFD, LT4321IUF

DEMO CIRCUIT 2475A-A

SIZE

DATE:

IC NO. REV.

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

Thursday, June 02, 2016

HIGH EFFICIENCY IEEE802.3bt PD WITH PoE IDEAL DIODE BRIDGE

K. HTOO

N/A

LT4295IUFD, LT4321IUF

DEMO CIRCUIT 2475A-A

SIZE

DATE:

IC NO. REV.

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

Thursday, June 02, 2016

HIGH EFFICIENCY IEEE802.3bt PD WITH PoE IDEAL DIODE BRIDGE

K. HTOO

N/A

LT4295IUFD, LT4321IUF

DEMO CIRCUIT 2475A-A

D19

PTVS58VS1UR

2 1

HSS

R31

OPT

2512

E12

1uF

C16

0805

25V

R13

100

470pF

1206

R16

0805

1206

OPT

750316115

2.2uF

100V

1210

X7R

OPT

R19

37.4

0805

1.5K

R32

OPT

C27

0402 1uF

C17

B2100

2 1

0.047uF

C12

100V

exposed pad, solder side

LT4295IUFD

VPORT 28

HSGATE 26

HSSRC 25

SWVCC 23

DNC

VCC 21

VIN 24

PG 20

FB31

ISEN- 16

ISEN+ 17

SG 18

AUX

RCLASS++

RCLASS

GND

VCC

T2P

SFST

RLDCMP

VCC

GND

ITHB 13

FFSDLY 12

ROSC

GND_EP

R11

7.50K

PE-68386NL

D16

PTVS58VS1UR

2 1

100pF

C26

25V

0402

100uH

DO1608C-104

MOC207

1 7

D13

BAT46WJ,115

R29

52.3K 220pF

C25

10uH

Coilcraft

DO1608C-103

1mH

744272102

1 2

OPT

R12

10uF

100V

6.3x7.7

R14

25m

1206

E10

8.2

0805

C10

10nF

0603

100V

R17

2.00K

R22

107K

MMBT3906

OPT

C15

0805

180nH

COILCRAFT

DO1813P-181HC

200

1206

TPN1600ANH

4.7nF

C23

2KV

R15

OPT

C21

OPT

PSMN075-100MSE

0.1uF

C24

R25

10K

200

1206

D18

OPT

R30

OPT

0805

R24

26.1K

E11

FMMT723A

3 2

R20

1.00K

0805

R18

10K

33uF

25V

EEHZA1E330R

D15

BAV19WS

2 1

OPT

C19

10uF

X5R

16V

1206

R27

0402

1206

3.3nF

C22

R26

5.1K

2.2nF

C20

X5R

16V

1206

10uF

LED

R21

174K

BSZ900N20NS3

100pF

1206

MMBT3904

2 3

D17

PMEG1020EA

2 1

OPT

C18

10uF

C13

10V

1206

3.3K

R10

6.65K

R23

OPT

VSEC_P

VPRI_SG

VAUX_P

VPRI_SW

VPRI_P

VAUX_P

VSEC_SW

VSEC_P

VPRI_SW

VSEC_P

VPRI_P

VPRI_SG VSEC_SG

VSEC_SG

VAUX_P VSEC_P

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