APPLICATION NOTE Atmel MSL2010 Single String LED Driver Boost Demo Board Atmel MSL2010 Key Features • • • • • • • Fully assembled and tested DC to DC converter generates VLED External 12V power supply included Built In PWM generator PWM input allows optional external brightness control Includes a single string of 10 white LEDs I2C interface General Description The Atmel® MSL2010 Boost Demo Board demonstrates a one-string LED driver with built-in boost regulator. The Demo Board is fully assembled and tested, and includes a potentiometer controlled Pulse Width (PWM) generator for LED brightness. Simply connect the included power supply and turn the knob to control the LED brightness. The circuit includes strategically placed jumpers, test points, a PWM input, I2C connections and un-installed component footprints to allow basic evaluation of the MSL2010. Figure 1. Atmel MSL2010 Boost Demo Board. 42100A−LED−04/2014 Table of Contents 1. Kit Contents ......................................................................................... 3 2. Operation of the Boost Demo Board .................................................... 3 3. Atmel MSL2010 Boost Demo Board Jumper Settings ......................... 4 3.1 Jumper Details .................................................................................................. 4 4. Atmel MSL2010 Boost Demo Board Design Files ............................... 5 5. Revision History ................................................................................. 11 Atmel MSL2010 Single String LED Driver Boost Demo Board [APPLICATION NOTE] 42100A−LED−04/2014 2 1. Kit Contents • Atmel MSL2010 Boost Demo Board The demo board contains the MSL2010 LED driver/controller, LED drive MOSFET, boost regulator, I2C I/O and a PWM generator • External Power Supply The power supply provides the 12V input voltage required to power the Demo Board • LEDs The LEDs are configured as 10 series LEDs in a single string Figure 1-1. MSL2010 Boost Demo Board Power in: 12V Brightness Adjust 2. Operation of the Boost Demo Board 1. 2. Connect the supplied 12V power supply to J2 and plug in the supply to 110VAC (90VAC to 255VAC): a. Alternatively, apply 10V to 15V DC across jumpers J13(+)/J14(-). Turn potentiometer R20 to adjust LED brightness. Atmel MSL2010 Single String LED Driver Boost Demo Board [APPLICATION NOTE] 42100A−LED−04/2014 3 3. Atmel MSL2010 Boost Demo Board Jumper Settings Table 3-1. 3.1 Jumper Defaults Jumper Default Function J1 Shorted by circuit trace Power for Boost J3 Shorted by circuit trace Connects LED string to VLED J4 Shorted by circuit trace Connects FBO to FB J5 Shorting bar installed Connects pull-up for EN J6 Shorting bar installed Connects pull-up for SCL J7 Shorting bar installed Connects pull-up for SDA J8 Shorted by circuit trace Connects FLTB to fault indicator LED, D12 J9 (3-pin) Shorting bar installed across pins 2 and 3 Connects PWM generator to MSL2010 PWM input J13 Shorted by circuit trace Power input to board; use as alternative to J2 when powering the board from a bench supply. Power distributes from J13 to J1, U1-16, U1-21 and R21. J14 Shorted by circuit trace Board ground J16 Shorted by circuit trace RTOFF connection Jumper Details • J1: Passes the incoming 12V power to the boost converter. To supply the boost converter from an external supply, cut the trace below J1, on the bottom of the board, and apply external power to the boost via J1-1 or TP16 • J3: Connects the LED string to the output of the boost regulator. Cut the trace under J3 to monitor LED string current. Additionally an external LED load can be used by connecting the anode connection to J3 pin 2 and the LED cathode TP12 • • • • J4: Connects FBO to FB. Allows the EO to optimize VLED • J13(+), J14(-): Allows connection of an external 10VDC to 15VDC power supply to drive the board, in place of the supplied 12V power supply • J16: Connects the RTOFF input to the external time resistor to set the off time of the boost converter. To use a potentiometer remove R12 and install the pot into position R16 J5, J6 and J7: Connect the pull-up resistors for the Enable, SDA and SCL inputs J8: Connects indicator LED D12 to FLTB. FLTB pulls low for over-temperature condition, turning on D12 J9: Shorting pins 1 and 2 (default) connects the MSL2010 PWM input to the output of the on-board PWM generator. Shorting pins 2 and 3 connects the PWM input to a pull-up resistor for permanent 100% duty cycle. To apply an external PWM signal remove the jumper from J9 and apply the PWM signal to J9-2, or to P1-3/4 Atmel MSL2010 Single String LED Driver Boost Demo Board [APPLICATION NOTE] 42100A−LED−04/2014 4 R4 1K D12 RED J8 DNI R22 0 +5V 2 C3 0.1uF/16V TP9 4 J6 HDR1X2 R2 2.2K R17 4.7K R10 47K VLED J7 HDR1X2 R3 2.2K 3 U2 74AHC1G14 BAT54S 5 1 3 C2 0.22uF/10V R18 470 2 1 3 2 2 1 2 1 TP3 R8 200K J9 HDR1X3 1 2 3 R9 DNI C9 8.2pF R15 1M R5 100K TP2 R19 10K C8 10nF EN 2 PWM 4 SCL 6 SDA8 10 GND12 TP4 1 3 2 TP8 TP7 1 1 2 2 HDR1X2 J14 HDR1X2 J13 + +12V 2 24 22 11 12 2 3 4 5 6 8 J4 DNI VDD VCC EAO FB EN PWM SCL SDA FLTB NC 1 GND +12V R11 46.4K CS DRV GNDP VINP S G D 2 DNI J16 13 15 14 16 18 19 1 U1 MSL2010 20 C6 1uF/25V TP6 C16 33uF/63V GND1 GND2 GND3 GND4 C10 C11 23 10uF/25V 10uF/25V +5V HDR2X6 1 3 5 7 9 11 PJ-102A J2 P1 J5 HDR1X2 R1 10K TP1 R21 0 +12V 2 1 R20 50K 1 2 21 D11 25 FBO REXT 9 VINA TOFF 10 TP13 R16 DNI 2 1 R12 47K C12 1uF/25V +12V R6 100K C13 DNI C7 DNI TP16 TP14 TP15 R13 0 1 C15 22uF/25V C4 DNI R14 0.1 Q2 FDD3860 TP11 L1 22uH J1 DNI +12V D10 OVSPW1BCR4 Q1 FQD7N10LTM R7 1 + D9 OVSPW1BCR4 D8 OVSPW1BCR4 D7 OVSPW1BCR4 D6 OVSPW1BCR4 D5 OVSPW1BCR4 D4 OVSPW1BCR4 D3 OVSPW1BCR4 D2 OVSPW1BCR4 D1 OVSPW1BCR4 TP5 TP12 J3 DNI VLED 2 1 2 3 2 1 2 3 1 1 3 C14 DNI TP10 C5 DNI C1 10uF/100V 12V 2A Power Supply 993-1000-ND PSA24A-120(P) X1 5/7/2013 MSL2010 Boost Demo_R3.SchDoc TITLE: MSL2010 Boost Demo Board Document number: * Date: 1 Revision: A 10:54:24 AM PAGE: 1600 Technology Drive, San Jose CA. 95110 ATMEL Corporation MCU D13 SS16 0 of 1 4. Atmel MSL2010 Boost Demo Board Design Files Figure 4-1. MSL2010 Boost Demo Board Schematics Atmel MSL2010 Single String LED Driver Boost Demo Board [APPLICATION NOTE] 42100A−LED−04/2014 5 Figure 4-2. Atmel MSL2010 Boost Demo Board Component Layout Atmel MSL2010 Single String LED Driver Boost Demo Board [APPLICATION NOTE] 42100A−LED−04/2014 6 Figure 4-3. Atmel MSL2010 Boost Demo Board Component Side Atmel MSL2010 Single String LED Driver Boost Demo Board [APPLICATION NOTE] 42100A−LED−04/2014 7 Figure 4-4. Atmel MSL2010 Boost Demo Board Solder Side Atmel MSL2010 Single String LED Driver Boost Demo Board [APPLICATION NOTE] 42100A−LED−04/2014 8 Table 4-1. Atmel MSL2010 Boost Demo Board Bill of Materials Reference Designator Value Description Mfr PN C1 10µF/100V Cap cer 10µF 100V 20% X7S 2220 C5750X7S2A106M C2 0.22µF/10V Cap cer 0.22µF 10V 10% X7R 0603 CC0603KRX7R6BB224 C3 0.1µF/16V Cap cer 0.1µF 16V 10% X7R 0603 GRM188R71C104KA01D C6, C12 1µF/25V Cap cer 1µF 25V Y5V 0805 C2012Y5V1E105Z/0.85 C8 10nF Cap cer 10000pF 16V 10% X7R 0805 C0805C103K4RACTU C9 8.2pF Cap cer 8.2pF 50V NP0 0805 08055A8R2CAT2A C10, C11 10µF/25V Cap cer 10µF 25V 10% X5R 0805 C2012X5R1E106K C15 22µF/25V Cap alum 22µF 25V 20% SMD EEE-FT1E220AR C16 33µF/63V Cap alum 33µF 63V 20% RADIAL EEU-FC1J330 D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 OVSPW1BCR4 LED white 6X6mm SMD 120deg OVSPW1BCR4 D11 BAT54S Diode Schottky 30V 200mW SOT23-3 BAT54S-7-F D12 RED LED super red clr thin 0603 LTST-C191KRKT D13 SS16 Diode Schottky 1A 60V SOD123 SMA SS16 GND1, GND2, GND3, GND4 Test point J1, J3, J4, J8, J16 DNI Conn hdr brkway .100 2pos vert HDR1X2 4-103328-0 J2 PJ-102A Conn jack power 2.1mm PCB TH PJ-102A J5, J6, J7, J13, J14 HDR1X2 Conn hdr brkway .100 2pos vert HDR1X2 4-103328-0 J9 HDR1X3 Conn hdr brkway .100 2pos vert HDR1X3 4-103328-0 L1 22µH Inductor 22µH 2A shield SMD CDRH8D38NP-220NC P1 HDR2X6 Conn hdr brkway .100 2pos vert HDR2X6 4-103328-0 Q1 FQD7N10LTM MOSFET N-ch 100V 5.8A DPAK TO252-3M FQD7N10LTM Q2 FDD3860 MOSFET N-ch 100V 6.2A DPAK TO252-3M FDD3860 R1 10kΩ Res 10.0kΩ 1/8W 1% 0805 SMD ERJ-6ENF1002V R2, R3 2.2kΩ Res 2.2kΩ 1/8W 5% 0805 SMD ERJ-6GEYJ222V R4 1kΩ Res 1.00kΩ 1/8W 1% 0805 SMD ERJ-6ENF1001V R5 100kΩ Res 100kΩ 1/10W 1% 0603 SMD RMCF0603FT100K R6 100kΩ Res 100kΩ 1/8W 1% 0805 SMD ERJ-6ENF1003V R7 1Ω Res 0.56Ω 1/10W 1% 0603 SMD ERJ-14YJ1R0U R8 200kΩ Res 200kΩ 1/8W 5% 0805 SMD RMCF0805JT200K R10, R12 47kΩ Res 47.0kΩ 1/8W 1% 0805 SMD ERJ-6ENF4702V R11 46.4kΩ Res 46.4kΩ 1/8W 1% 0805 SMD ERJ-6ENF4642V R13, R21, R22 0Ω Res 0.0Ω 1/8W 0805 SMD ERJ-6GEY0R00V R14 0.1Ω Res .10Ω 1/2W 5% 1210 73L5R10J R15 1MΩ Res 1.0MΩ 1/8W 5% 0805 SMD ERJ-6GEYJ105V R17 4.7kΩ Res 4.7kΩ 1/8W 5% 0805 SMD RMCF0805JT4K70 R18 470Ω Res 470Ω 1/10W 1% 0603 SMD RMCF0603FT470R R19 10kΩ Res 10kΩ 1/10W 1% 0603 SMD RMCF0603FT10K0 R20 50kΩ Trimmer 50kΩ 0.5W TH 3386P-1-503TLF Atmel MSL2010 Single String LED Driver Boost Demo Board [APPLICATION NOTE] 42100A−LED−04/2014 9 TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11, TP12, TP13, TP14, TP15, TP16 Test point HDR1X1 U1 MSL2010 MSL2021 TQFN24 U2 74AHC1G14 IC Schmitt-trg inv gate SOT23-5 X1 12V 2A power supply Trans adapter wall 24W 12V C4 DNI DNI C5 DNI DNI C7 DNI DNI C13, C14, R9 DNI DNI R16 DNI DNI SN74AHC1G14DBVR PSA24A-120(P) Atmel MSL2010 Single String LED Driver Boost Demo Board [APPLICATION NOTE] 42100A−LED−04/2014 10 5. Revision History Doc. Rev. Date Comments 42100A 04/2014 Initial document release Atmel MSL2010 Single String LED Driver Boost Demo Board [APPLICATION NOTE] 42100A−LED−04/2014 11 Atmel Corporation Atmel Asia Limited Atmel Munich GmbH Atmel Japan G.K. 1600 Technology Drive Unit 01-5 & 16, 19F Business Campus 16F Shin-Osaki Kangyo Building San Jose, CA 95110 BEA Tower, Millennium City 5 Parkring 4 1-6-4 Osaki, Shinagawa-ku USA 418 Kwun Tong Road D-85748 Garching b. Munich Tokyo 141-0032 Tel: (+1)(408) 441-0311 Kwun Tong, Kowloon GERMANY JAPAN Fax: (+1)(408) 487-2600 HONG KONG Tel: (+49) 89-31970-0 Tel: (+81)(3) 6417-0300 www.atmel.com Tel: (+852) 2245-6100 Fax: (+49) 89-3194621 Fax: (+81)(3) 6417-0370 Fax: (+852) 2722-1369 © 2014 Atmel Corporation. All rights reserved. / Rev.: 42100A−LED−04/2014 Atmel®, Atmel logo and combinations thereof, Enabling Unlimited Possibilities®, and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. 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