Linear Technology DC1166A Quick setup guide

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dc1166af
DEMO MANUAL DC1166A
DESCRIPTION
LT3590
48V Buck-Mode LED Driver
Demonstration circuit 1166A is a 48V Buck-Mode LED
Driver featuring the LT
®
3590. The LT3590 is a fixed fre-
quency buck-mode converter specifically designed todrive
up to 10 LEDs in series from a 48V DC source. Series con-
nection of the LEDs provides identical LEDcurrents of up to
50mA, resulting in uniform brightness and eliminating the
need for ballast resistors. A fixed frequency current mode
architecture results in stable operation over a wide range
of input voltage and load condition. The high switching
frequency allows using tiny components for the circuit.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
PERFORMANCE SUMMARY
The LT3590 data sheet gives complete descriptions of the
part, operation and application information. The data sheet
must be read in conjunction with this quick start guide for
working on or modifying the demo circuit 1166A.
Design files for this circuit board are available at
http://www.linear.com/demo/DC1166A
Specifications are at TA= 25°C
DO NOT LOOK DIRECTLY AT OPERATING LED
WARNING!
This Circuit Produces Light that Can Damage Eyes.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Supply Range 4.5 55 V
DMAX Maximum Duty Cycle 90 %
IQSHDN Quiescent Current in Shutdown VIN = 48V 15 20 µA
fSW Switching Frequency 650 850 1050 KHz
VREG VREG Pin Voltage 1mA Load on VREG Pin 3.1 3.3 3.5 V
EFF Efficiency VIN = 48V; VLED = 30V; ILED = 50mA 90 %
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DEMO MANUAL DC1166A
QUICK START PROCEDURE
Demonstration circuit 1166A is easy to set up to evalu-
ate the performance of the LT3590. Refer to Figure 1 for
proper measurement equipment setup and follow the
procedure below:
1. Place jumpers in the following positions:
JP1 ON
2. With power off, connect the input power supply to VIN
and GND.
3. With power off, connect LEDs to LED+ and LED–.
4. Turn on the power at the input.
NOTE: Make sure that the input voltage does not
exceed 55V.
5. Check for the proper output voltage and current.
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DEMO MANUAL DC1166A
Figure 1. Proper Measurement Equipment Setup
QUICK START PROCEDURE
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DEMO MANUAL DC1166A
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 1 C1 CAP, 0805 0.47µF 10% 100V X7R MURATA GRM21BR72A474KA73BL
2 1 C2 CAP, 0805 1µF 10% 50V X7R MURATA GRM21BR71H105K
3 1 L1 INDUCTOR, 330µH COILCRAFT LPZ3010-334MR
4 1 R1 RES, 0402 4.02Ω 1% 1/16W VISHAY CRCW04024R02FKED
5 1 U1 IC, LT3590EDC LINEAR TECH. LT3590EDC
Additional Demo Board Circuit Components
1 2 C3, C4 CAP, 0402 0.1µF 10% 16V X5R AVX 0402YD104K
2 1 C5 CAP, 10µF 20% 100V ALUM SANYO 100CE10BS
3 1 JP1 HEADER, 3-PIN 0.100 SAMTEC TSW-103-26-L-S
4 1 JP1 SHUNT SAMTEC SNT-100-BK-G
5 1 R2 RES, 0402 100k 1% 1/16W VISHAY CRCW04021003FKED
6 1 R3 RES, 0402 10Ω 5% 1/16W VISHAY CRCW040210R0JNED
Hardware: For Demo Board Only
1 5 E1, E2, E3, E4, E5 TURRET MILL-MAX 2501-2-00-80-00-00-07-0
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DEMO MANUAL DC1166A
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 DIAGRAM
5 5
4 4
3 3
2 2
1 1
D D C C B B A A
1 to 10 LEDS
4.5V - 55V
50mA
COILCRAFT LPZ3010-334MR
3.3V, 1mA
REVISION HISTORY
DESCRIPTION DATE APPROVEDECO REV
PROD
A 06/29/07
REVISION HISTORY
DESCRIPTION DATE APPROVEDECO REV
PROD
A 06/29/07
REVISION HISTORY
DESCRIPTION DATE APPROVEDECO REV
PROD
A 06/29/07
Customer Notice:
Linear Technology has made a best effort to
design a circuit that meets customer-supplied specifications; however, it remains the customers 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
Applications Engineering for assistance.
This circuit is proprietary to Linear Technology and supplied for use with Linear Technology parts.
Customer Notice:
Linear Technology has made a best effort to
design a circuit that meets customer-supplied specifications; however, it remains the customers 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
Applications Engineering for assistance.
This circuit is proprietary to Linear Technology and supplied for use with Linear Technology parts.
Customer Notice:
Linear Technology has made a best effort to
design a circuit that meets customer-supplied specifications; however, it remains the customers 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
Applications Engineering for assistance.
This circuit is proprietary to Linear Technology and supplied for use with Linear Technology parts.
SIZE
SCALE:
CAGE CODE
DWG NO
REV
SHEET OF
FILENAME:
TITLE
CONTRACT NO.
APPROVALS
DATE
DRAWN CHECKED APPROVED ENGINEER DESIGNER
TECHNOLOGY
1630 McCarthy Blvd. Milpitas, CA 95035 Phone: [phone] Fax: [phone]
A
DC1166A
Wednesday, August 31, 2016
11
SCH, LT3590EDC, 48V BUCK-MODE LED DRIVER
MEI
06/29/07
1166A-A.DSN
SIZE
SCALE:
CAGE CODE
DWG NO
REV
SHEET OF
FILENAME:
TITLE
CONTRACT NO.
APPROVALS
DATE
DRAWN CHECKED APPROVED ENGINEER DESIGNER
TECHNOLOGY
1630 McCarthy Blvd. Milpitas, CA 95035 Phone: [phone] Fax: [phone]
A
DC1166A
Wednesday, August 31, 2016
11
SCH, LT3590EDC, 48V BUCK-MODE LED DRIVER
MEI
06/29/07
1166A-A.DSN
SIZE
SCALE:
CAGE CODE
DWG NO
REV
SHEET OF
FILENAME:
TITLE
CONTRACT NO.
APPROVALS
DATE
DRAWN CHECKED APPROVED ENGINEER DESIGNER
TECHNOLOGY
1630 McCarthy Blvd. Milpitas, CA 95035 Phone: [phone] Fax: [phone]
A
DC1166A
Wednesday, August 31, 2016
11
SCH, LT3590EDC, 48V BUCK-MODE LED DRIVER
MEI
06/29/07
1166A-A.DSN
JP1 ONOFF JP1 ONOFF
1
2
3
E1
VIN
E1
VIN
E5
LED-
E5
LED-
U1 LT3590EDC U1 LT3590EDC
CTRL
1
VIN 4
GND
7
VREG
6SW 3
LED 5
GND
2
E4
LED+
E4
LED+
L1 330uH L1 330uH
R2
1%100K
R2
1%100K
+
C5 10uF 100V
OPT
+
C5 10uF 100V
OPT
C2
1uF 50V
C2
1uF 50V
1 2
C4
0.1uF
C4
0.1uF
12
R1
1%4.02
R1
1%4.02
C1 0.47uF 100V C1 0.47uF 100V
E3
CTRL
E3
CTRL
E2
GND
E2
GND
R3 10 R3 10
C3 0.1uF C3 0.1uF
12
E6
VREG
E6
VREG
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DEMO MANUAL DC1166A
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ●FAX: [phone] ●www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2016
LT 0916 • 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:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
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