LM3561EVM

User's Guide SNOU103 – MAY 2013 AN-2252 LM3561 Evaluation Kit 1 Introduction The LM3561 is a 2-MHz fixed-frequency current-mode synchronous boost converter. The device is designed to operate as a single 600-mA constant current driver for high-current white LEDs. The high-side current source allows for grounded cathode LED operation while the 250-mV regulated headroom voltage ensures that the LED current is well regulated and efficiency remains high. The LM3561EVM is designed to fully evaluate the LM3561 Boost Converter + White LED Camera Flash LED driver. The board comes populated with a single Flash LED (LXCL-EYW4 from Lumileds), and an indicator LED (LEDI). For each input/output of the LM3561 there is a dedicated header pin for testing purposes. The LM3561EVM is included with a USB2ANY Module which interfaces the LM3561EVM with the downloadable Graphical User Interface (LM3561.exe GUI) available at (www.ti.com). 3.3 VIO VIN VSENSE GND SCL SDA GND RSDA (4.7k: TX2 SCL SDA IN RSCL (4.7k: CIN (10PF) TX2 LM3561 STROBE USB2ANY GND B1 (Push-Button TX1 LEDI (Red LED) LEDI/NTC HWEN RHWEN (4.7k: STROBE RS (0.1: NTC LED OUT VOUT SW COUT (10PF) TX1 GND LED (Flash LED) L1 (1PH) GND HWEN CL (10PF) GND VIN Figure 1. LM3561 Evaluation Board Schematic All trademarks are the property of their respective owners. SNOU103 – MAY 2013 Submit Documentation Feedback AN-2252 LM3561 Evaluation Kit Copyright © 2013, Texas Instruments Incorporated 1 LM3561 Evaluation Board Bill of Materials 2 LM3561 Evaluation Board Bill of Materials Component Symbol 3 www.ti.com Value Manufacturer Part # Size LM3561 LED Driver TI LM3561 (0.4 mm × 1.215 mm × 1.615 mm) L1 1 µH, IDC_MAX = 2.15A, RL = 80mΩ TOKO MDT2012-CR1R0N (2 mm x 1.25 mm x 0.9 mm) CIN 10 µF, 6.3V TDK C1005X5R0J106M 0402 (1mm x 0.5 mm x 0.5 mm) COUT 10 µF, 6.3V TDK C1005X5R0J106M 0402 CL 10 µF, 6.3V TDK C1608X5R1A106M 0603 (1.6 mm x 0.8 mm x 0.8 mm) RHWEN 4.7 kΩ Vishay-Dale CRCW04024K70JNED 0603 RSDA 4.7 kΩ Vishay-Dale CRCW04024K70JNED 0603 RSCL 4.7 kΩ Vishay-Dale CRCW04024K70JNED 0603 0603 RS 0.1Ω Panasonic ERJ-L03KF10CV LED Flash LED Lumileds LXCL-EYW4 LEDI Red Indicator LED Lite-On LTST-C170KRKT LM3561 Evaluation Board Layout Figure 2, Figure 3, Figure 4, and Figure 5 show the board layout for the LM3561 Evaluation Board. This represents an ultra compact design which can deliver a 600 mA flash LED current with VIN down to 2.7V. Figure 2. Top Layer 2 AN-2252 LM3561 Evaluation Kit SNOU103 – MAY 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated LM3561 Evaluation Board Layout www.ti.com Figure 3. Mid Layer 1 Figure 4. Mid Layer 2 SNOU103 – MAY 2013 Submit Documentation Feedback AN-2252 LM3561 Evaluation Kit Copyright © 2013, Texas Instruments Incorporated 3 LM3561EVM Set-Up www.ti.com Figure 5. Bottom Layer 4 LM3561EVM Set-Up To operate the LM3561EVM the following steps must be taken: 1. Download the LM3561 Graphical User Interface (GUI) from www.ti.com. The downloaded .zip folder consists of 2 files: the LM3561.exe and the USB2ANY.dll. The .zip file must be copied and the files extracted to a folder on a PC. Both files must reside in the same folder. 2. Ensure there is a jumper connected from VIO to VIN or from VIO to 3.3V. This is the jumper at the top left of the board. This will connect the I2C pull-ups, the HWEN pull-up, and the STROBE button (B1) to a logic voltage. 3. Connect a (2.7V to 5.5V) power supply across the red and black banana plugs. Red (+) and Black (GND). 4. Connect the USB2ANY, USB Interface module with the supplied 10-pin cable to the LM3561 evaluation board. 5. Connect the USB2ANY, USB Interface module to the PC with the LM3561.exe installed. 6. Launch the LM3561.exe 5 LM3561.exe Graphical User Interface (GUI) Instructions The GUI for the LM3561 is designed to fully demonstrate all the features of the LM3561 Flash LED Driver. The GUI provides the interface between the PC and the Texas Instruments USB2ANY, USB Interface Module. A picture of the interface program (LM3561.exe) is shown in Figure 6. The GUI is broken up into different sections that correspond to the available registers within the LM3561. Operation of the GUI is fairly basic. When any button is pushed/un-pushed or pull-down menu is selected, the appropriate I2C command will be automatically written to the LM3561. The following section lists the register descriptions for the LM3561. 4 AN-2252 LM3561 Evaluation Kit SNOU103 – MAY 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated LM3561 GUI www.ti.com 6 LM3561 GUI Figure 6. LM3561.exe GUI 7 LM3561 Register Descriptions Table 1. Enable Register Bit Settings Bits[7:3] Bit 2 Bits [1:0] Not Used (Strobe Level or Edge, STR bit) Enable Bits N/A 0 = STROBE Input set for Level. Flash current turns on when Enable Bits STROBE input is high and turns off when STROBE either goes 00 = Shutdown (default) low or the Timeout Duration expires (default) 01 = Indicator Mode 10 = Torch Mode 1 = STROBE Input set for edge triggered. Flash current turns on 11 = Flash Mode (bits reset at timeout) when STROBE sees a rising edge. Flash pulse turns off when timeout duration expires Table 2. Indicator Brightness Register Bit Settings Bits [7:3] Bits [2:0] Not Used Indicate Current Settings N/A 000 = 2.25 mA (default) 001 = 4.5 mA 010 = 6.75 mA 011 = 9 mA 100 = 11.25 mA 101 = 13.5 mA 110 = 15.75 mA 111 = 18 mA SNOU103 – MAY 2013 Submit Documentation Feedback AN-2252 LM3561 Evaluation Kit Copyright © 2013, Texas Instruments Incorporated 5 LM3561 Register Descriptions www.ti.com Table 3. GPIO Register Bit Settings Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Not Used TX2/GPIO2/INT Interrupt Output TX2/GPIO2 data TX2/GPIO2 data direction TX2/GPIO2 Control TX1/GPIO1 data TX1/GPIO1 data direction TX1/GPIO1 Control 0 = INT mode is disabled (default) 1 = When TX2/GPIO2 is configured as a GPIO output TX2/GPIO2/INT is set for INT mode and will pull low when either the LED Thermal Fault Flag is set or the VIN Monitor Flag is set This bit is the read or write data for TX2/GPIO2 in GPIO mode (default is 0) 0 = TX2/GPIO2 is a GPIO Input (default) 1 = TX2/GPIO2 is a GPIO Output This bit is the read or write data for TX1/GPIO1 in GPIO mode (default is 0) 0 = TX1/GPIO1 is a GPIO input (default) 1 = TX1/GPIO1 is a GPIO output 0 = TX1/GPIO1 is configured as flash interrupt input(default) 1 = TX1/GPIO1 is configured as a GPIO N/A 0 = TX2/GPIO2 is a flash interrupt input (default) 1 = TX2/GPIO2 is configured as a GPIO Table 4. VIN Monitor Register Bit Settings Bits [7:3] Bits [2:1] Bit 0 Not Used VIN Monitor Threshold Settings VIN Monitor Enable N/A 00 = 2.9V threshold (VIN falling) Default 01=3.0V threshold (VIN falling) 10 = 3.1V threshold (VIN falling) 11 = 3.2V threshold (VIN falling) 0 = VIN Monitor Comparator is disabled (default) 1 = VIN Monitor Comparator is enabled. Table 5. GPIO Register Bit Settings Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Not Used TX2/GPIO2/IN T Interrupt Output TX2/GPIO2 data TX2/GPIO2 data direction TX2/GPIO2 Control TX1/GPIO1 data TX1/GPIO1 data direction TX1/GPIO1 Control 0 = INT mode is disabled (default) 1 = When TX2/GPIO2 is configured as a GPIO output TX2/GPIO2/IN T is set for INT mode and will pull low when either the LED Thermal Fault Flag is set or the VIN Monitor Flag is set This bit is the read or write data for TX2/GPIO2 in GPIO mode (default is 0) 0= TX2/GPIO2 is a GPIO Input (default) 1= TX2/GPIO2 is a GPIO Output 0= TX2/GPIO2 is a flash interrupt input (default) 1= TX2/GPIO2 is configured as a GPIO This bit is the read or write data for TX1/GPIO1 in GPIO mode (default is 0) 0= TX1/GPIO1 is a GPIO input (default) 1= TX1/GPIO1 is a GPIO output 0= TX1/GPIO1 is configured as flash interrupt input(default) 1= TX1/GPIO1 is configured as a GPIO N/A 6 AN-2252 LM3561 Evaluation Kit SNOU103 – MAY 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated LM3561 Register Descriptions www.ti.com Table 6. Flash Brightness Register Bit Settings Bits [7:4] Bits [3:0] Not Used N/A Flash Current Settings 0000 = 36 mA 0001 = 73.6 mA 0010 = 111.2 mA 0011 = 148.8 mA 0100 = 186.4 mA 0101 = 224 mA 0110 = 261.6 mA 0111 = 299.2 mA 1000 = 336.8 mA 1001 = 374.4 mA 1010 = 412 mA 1011 = 449.6 mA 1100 = 487.2 mA 1101 = 524.8 mA (default) 1110 = 562.4 mA 1111 = 600 mA Table 7. Flash Timeout Duration Register Bit Settings Bit [7:6] Bit 5 Bits [4:0] Not Used Current Limit Select Flash Timeout Duration Settings N/A 0 = 1A Peak Current Limit 00000 = 32 ms timeout 1 = 1.5A Peak Current Limit (default) 00001 = 64 ms timeout 00010 = 96 ms timeout 00011 = 128 ms timeout 00100 = 160 ms timeout 00101 = 192 ms timeout 00110 = 224 ms timeout 00111 = 256 ms timeout 01000 = 288 ms timeout 01001 = 320 ms timeout 01010 = 352 ms timeout 01011 = 384 ms timeout 01100 = 416 ms timeout 01101 = 448 ms timeout 01110 = 480 ms timeout 01111 = 512 ms timeout (default) 10000 = 544 ms timeout 10001 = 576 ms timeout 10010 = 608 ms timeout 10011 = 640 ms timeout 10100 = 672 ms timeout 10101 = 704 ms timeout 10110 = 736 ms timeout 10111 = 768 ms timeout 11000 = 800 ms timeout 11001 = 832 ms timeout 11010 = 864 ms timeout 11011 = 896 ms timeout 11100 = 928 ms timeout 11101 = 960 ms timeout 11110 = 992 ms timeout 11111 = 1024 ms timeout SNOU103 – MAY 2013 Submit Documentation Feedback AN-2252 LM3561 Evaluation Kit Copyright © 2013, Texas Instruments Incorporated 7 LM3561 Register Descriptions www.ti.com Table 8. Flags Register Bit Settings Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 VIN Monitor Flag Not Used LED Thermal Fault (NTC) TX2 Interrupt TX1 Interrupt Led Fault (LEDF) Thermal Shutdown (TSD) Flash Timeout (TO) 0 =LEDI/NTC pin is above VTRIP (default) 1=LEDI/NTC has fallen below VTRIP(NTC mode only) 0=TX2 has not changed state (default) 1=TX2 has changed state (TX2 mode only) 0=TX1/TORCH has not changed state (default) 1=TX1/TORCH pin has changed state (TX1 mode only) 0 = No Fault at VIN (default) 1 = Input Voltage Monitor is enabled and VIN has fallen below (VIN_TH) N/A 0 = Proper LED Operation (default) 1 = LED Failed (Open or Short) 0 = Die Temperature below Thermal Shutdown Limit (default) 1 = Die Temperature has crossed the Thermal Shutdown Threshold of +150°C 0 = Flash timeout did not expire (default) 1 = Flash timeout Expired Table 9. Configuration Register 1 Bit Settings Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Hardware Torch Mode Enable TX2 Polarity TX1 Polarity NTC Mode Enable STROBE Polarity STROBE Input Enable Not Used Not Used 0 = TX1/TORCH is a TX1 flash interrupt input (default) 1 = TX1/TORCH pin is a hardware TORCH enable. This bit is reset to 0 after a flash event. 0 = TX2 is set for active low polarity 1 = TX2 is set for active high polarity (default) 0 = TX1 is set for active low polarity 1 = TX1 is set for active high polarity (default) 0 = LEDI/NTC is a Indicator Current Source Output (default) 1 = LEDI/NTC is a Comparator Input for LED Temperature Sensing 0 = STROBE set for active low polarity 1 = STROBE set for active high polarity (default) 0 = STROBE Input Disabled (default) 1 = STROBE Input Enabled N/A N/A Table 10. Configuration Register 2 Bit Settings 8 Bits [7:4] Bit 3 Bit 2 Bit 1 Bit 0 Not Used VIN Monitor Shutdown AET mode NTC Shutdown TX2 Shutdown N/A 0 = If IN drops below VIN_TH and the VIN Monitor feature is enabled, the LEDs are forced into Torch mode (default) 1 = If IN drops below VIN_TH and the VIN Monitor feature is enabled, the LEDs turn off 0 = Normal operation for TX1/TORCH high before STROBE (TX1 mode only) default 1 = Alternate External Torch Mode. TX1/TORCH high before STROBE forces Torch mode with no timeout (TX1 mode only) 0 = LEDI/NTC pin going below VTRIP forces the LEDs into Torch mode (NTC mode only) default 1 = LEDI/NTC pin going below VTRIP forces the LEDs into shutdown (NTC mode only) AN-2252 LM3561 Evaluation Kit 0 = TX2 interrupt event forces the flash LED into Torch mode (TX2 mode only) default 1 = TX2 interrupt event forces the flash LED into shutdown (TX2 mode only) SNOU103 – MAY 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated STANDARD TERMS AND CONDITIONS FOR EVALUATION MODULES 1. Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, or documentation (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms and conditions set forth herein. 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SPACER SPACER SPACER SPACER SPACER 【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 開発キットの中には技術基準適合証明を受けて いないものがあります。 技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの 措置を取っていただく必要がありますのでご注意ください。 1. 2. 3. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用 いただく。 実験局の免許を取得後ご使用いただく。 技術基準適合証明を取得後ご使用いただく。 なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。 上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・イ ンスツルメンツ株式会社 東京都新宿区西新宿６丁目２４番１号 西新宿三井ビル 3.3.3 Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page 電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧くださ い。http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page SPACER 4 EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS. 4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling or using the EVM, including without limitation any warning or restriction notices. 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Except as otherwise provided, TI does not offer any refunds, returns, or exchanges. Furthermore, no return of EVM(s) will be accepted if the package has been opened and no return of the EVM(s) will be accepted if they are damaged or otherwise not in a resalable condition. If User feels it has been incorrectly charged for the EVM(s) it ordered or that delivery violates the applicable order, User should contact TI. All refunds will be made in full within thirty (30) working days from the return of the components(s), excluding any postage or packaging costs. 10. Governing Law: These terms and conditions shall be governed by and interpreted in accordance with the laws of the State of Texas, without reference to conflict-of-laws principles. User agrees that non-exclusive jurisdiction for any dispute arising out of or relating to these terms and conditions lies within courts located in the State of Texas and consents to venue in Dallas County, Texas. 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