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9

DEMO MANUAL EVAL-LT8376-AZ

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog 

Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications 

subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

SCHEMATIC DIAGRAM

1.

ALL 

RESISTORS 

ARE 

0402, 

1%.

   

  ALL 

CAPACITORS 

ARE 

0402

NOTE: 

UNLESS 

OTHERWISE 

SPECIFIED

350kHz

C26

2.2uF 0603

E6

CTRL

C12 0.01uF

FB1

MPZ2012S102AT000

OPT

M

1

SQ7415AEN

R19 OPT 0603

JP1

LATCH 

OFF

DEFEAT

HICCUP

FAULT

1

3

5

6

4

2

C14 4.7uF

1210

100V

JP3

O

N

EXT

INT

PWM

1

3

5

6

4

2

FB2

MPZ2012S601AT000

C7 2.2uF

0603

10V

E8

GND

C5

0.47uF 100V

C2

4.7uF

1210

E9

EN/UVLO

C8 2.2uF

C20 0.1uF 100V

E5

GND

LED-

U1

LT8376

VOUT

14

SS

2

GND

15

VREF

1

CTRL

28

EN/UVLO

27

FB

4

NC

36

GND

31

GND

29

VC

3

ISN

6

NC

34

ISP

5

NC

35

RT

10

GND

30

PWMTG

13

NC

33

RP

9

INTVCC

25

FAULT

8

SW

19

SW

18

SYNC/SPRD

11

VIN

16

VIN

17

VIN

20

VIN

21

VIN

26

BO

OST

24

ISMON

7

PWM

12

GND

22

GND

23

GND

32

R14 2M

C1 10uF

1206

50V

R6

24.9k

TP6

GND

E3

EMIVIN

43V-57V

R5

287K

E4

LED+

36VLED 1.5A

TP7

ISMON

C11 100pF

TP1 VC

R13 1M

C13 0.1uF 100V 0603

C15 0.1uF 50V

C9

1206

50V

OPT

R12 118k

R20 OPT

R9

47k

5%

R11 91k 5%

R3

402k

TP2 VOUT

L2

15uH

XAL4040-153MEB

R2

12.7k

C17 47pF

E10

EXT 

SYNC

R18 0 OPT

C22 OPT

E7

PWM

R10 100k 5%

E2

GND

C6

0805

C3

100V

JP2

EXT 

SYNC

NO 

SSFM

SSFM

SYNC/SSFM

1

3

5

6

4

2

JP4

HDR

EXT/ON

INT

RP

1

3

4

2

R8 100k

R15 100k

TP4 INJ1

E1

VIN

C4 0.47uF 100V 0805

+

C24 47uF

EEEHA1J470UP

63V

1

2

R7 1M

0603

C16 1uF

VR1 100k

3314J-1-104E

1

3

2

TP3 INJ2

TP5

FAULT

_____

R4 16k 5%

R1 0.05 1206

L1

47uH

IHLE4040DDER470M5A

C19 OPT

INTVCC

VREF

VREF

INTVCC

VREF

Содержание EVAL-LT8376-AZ

Страница 1: ...he CTRL pin When running PWM dimming with SSFM enabled the SSFM aligns itself with the PWM signal for flicker free operation of the LED string This applies to both internal and external PWM dimming All registered trademarks and trademarks are the property of their respective owners Small ceramic input and output capacitors are used to save space and cost The input and output filters on EVAL LT8376...

Страница 2: ... 05Ω R8 R15 100k 43V VIN 57V VLED 36V 1 5 A Open LED Voltage VOUT OVP R7 1M R6 24 9k 41 V Typical Efficiency VIN 50V VLED 36V ILED 1 5A with Filters without Filters 96 96 5 Internally Generated PWM Dimming Range JP3 INT JP4 INT 1 128 100 Internally Generated PWM Dimming Frequency JP3 INT JP4 INT R12 118k R5 287k 192 Hz Peak Current Limit 3 3 3 6 3 9 A EMIVIN Undervoltage Lockout UVLO Falling R3 40...

Страница 3: ...ring of LEDs that will run with forward voltage less than or equal to 36V at 1 5A to the LED and LED turrets on the PCB as shown in Figure 1 2 Set JP4 to EXT ON and JP3 to ON for 100 always on LED operation Set JP2 to NO SSFM to run without SSFM 3 With power off connect the input power supply to the EMIVIN and GND turrets Make sure that the DC input voltage will not exceed 60V 4 Turn the input pow...

Страница 4: ...4 DEMO MANUAL EVAL LT8376 AZ Rev 0 Figure 1 Setup Drawing for EVAL LT8376 AZ QUICK START PROCEDURE ...

Страница 5: ...Z Efficiency vs VIN Internal PWM Dimming 128 1 PWM RATIO 192Hz PWM FREQUENCY 10µs DIV VSW 50V DIV PWMTG 20V DIV IL 2A DIV ILED 2A DIV EVAL 8376 F03 Figure 3 EVAL LT8376 AZ Internal PWM Dimming with EMI Filters 48VIN 36VLED 1 5A Transient Response 500µs DIV ILED 500mA DIV VCTRL 500mV DIV EVAL 8376 F04 Figure 4 EVAL LT8376 AZ 50 to 100 to 50 Load Step Transient Response 48VIN TEST RESULTS Figure 5 E...

Страница 6: ...E CE dBµV EVAL 8376 F06b b CISPR25 Average Conducted EMI Voltage Method CLASS 5 PEAK LIMIT EVAL LT8376 AZ AMBIENT FREQUENCY MHz 0 1 1 10 100 300 60 50 40 30 20 10 0 10 20 30 40 50 60 PEAK CE dBµA EVAL 8376 F07a a CISPR25 Peak Conducted EMI Current Method CLASS 5 AVERAGE LIMIT EVAL LT8376 AZ AMBIENT FREQUENCY MHz 0 1 1 10 100 300 60 50 40 30 20 10 0 10 20 30 40 50 60 AVERAGE CE dBµA EVAL 8376 F07b ...

Страница 7: ...RC LR1206LF 01 R050 F 16 1 R2 RES 12 7k 1 1 16W 0402 YAGEO RC0402FR 0712K7L 17 1 R3 RES 402k 1 1 10W 0402 AEC Q200 PANASONIC ERJ2RKF4023X 18 1 R4 RES 16k 5 1 16W 0402 AEC Q200 VISHAY CRCW040216K0JNED 19 1 R5 RES 287k 1 1 16W 0402 AEC Q200 VISHAY CRCW0402287KFKED 20 1 R6 RES 24 9k 1 1 16W 0402 AEC Q200 NIC NRC04F2492TRF 21 1 R7 RES 1M 1 1 10W 0603 AEC Q200 NIC NRC06F1004TRF 22 2 R8 R15 RES 100k 1 1...

Страница 8: ...TP1 TP3 TP4 TESTPOINT PCB COPPER FEATURE N A 43 0 TP2 TP5 TP7 TESTPOINT PCB COPPER FEATURE N A Hardware For Demo Board Only 44 6 E1 E6 E10 TEST POINT TURRET 0 064 MTG HOLE PCB 0 062 THK MILL MAX 2308 2 00 80 00 00 07 0 45 4 E2 E5 TEST POINT TURRET 0 094 MTG HOLE PCB 0 062 THK MILL MAX 2501 2 00 80 00 00 07 0 46 3 JP1 JP3 CONN HDR MALE 2 3 2mm VERT ST THT WURTH ELEKTRONIK 62000621121 47 1 JP4 CONN ...

Страница 9: ...V C2 4 7uF 1210 E9 EN UVLO C8 2 2uF C20 0 1uF 100V E5 GND LED U1 LT8376 VOUT 14 SS 2 GND 15 VREF 1 CTRL 28 EN UVLO 27 FB 4 NC 36 GND 31 GND 29 VC 3 ISN 6 NC 34 ISP 5 NC 35 RT 10 GND 30 PWMTG 13 NC 33 RP 9 INTVCC 25 FAULT 8 SW 19 SW 18 SYNC SPRD 11 VIN 16 VIN 17 VIN 20 VIN 21 VIN 26 BOOST 24 ISMON 7 PWM 12 GND 22 GND 23 GND 32 R14 2M C1 10uF 1206 50V R6 24 9k TP6 GND E3 EMIVIN 43V 57V R5 287K E4 LE...

Страница 10: ...ot disclose or transfer any portion of the Evaluation Board to any other party for any reason Upon discontinuation of use of the Evaluation Board or termination of this Agreement Customer agrees to promptly return the Evaluation Board to ADI ADDITIONAL RESTRICTIONS Customer may not disassemble decompile or reverse engineer chips on the Evaluation Board Customer shall inform ADI of any occurred dam...

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