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Using the LM3643EVM Evaluation Module

User's Guide

Literature Number: SNVU399

August 2014

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Summary of Contents for LM3643EVM

Page 1: ...Using the LM3643EVM Evaluation Module User s Guide Literature Number SNVU399 August 2014 ...

Page 2: ... 6 2 3 Operation 6 3 Board Layout 7 4 Schematic 10 5 USB Interface Board and I2 C Compatible Interface Program 12 5 1 User Interface 13 5 2 Flags 14 5 3 I O Pin Controls 14 2 Table of Contents SNVU399 August 2014 Submit Documentation Feedback Copyright 2014 Texas Instruments Incorporated ...

Page 3: ...Layer 1 Routing 8 9 Middle Layer 2 Routing 9 10 Bottom Assembly Layer UNMIRRORED 9 11 LM3643EVM Schematic 10 12 LM3643 General User Interface 12 13 I2 C interface Fields 13 14 Write Buttons 13 15 Flags 14 16 I O Pin Controls 14 List of Tables 1 Device and Package Configurations 4 2 Bill of Materials 11 3 SNVU399 August 2014 List of Figures Submit Documentation Feedback Copyright 2014 Texas Instrum...

Page 4: ...the LM3643EVM 2 1 Input Output Connector Description Input GND These are the power input terminals for the driver The terminal block provides a power VIN and ground GND connection to allow the user to attach the EVM to a cable harness EN J12 This is the jumper used to enable the LED driver HWEN pin The driver will be enabled when the HWEN pin is high VIO and disabled when it is low GND Figure 1 En...

Page 5: ...connect a control signal directly to the TORCH TEMP pin of the connector or place a jumper between connector pins TORCH TEMP and PWM1 Pin PWM1 can be configured as ON or OFFvia the GUI software provided Removing the jumper and setting the TORCH TEMP pin to TEMP mode the TEMP function can be utilized via the externally connected NTC thermistor Figure 4 TORCH TEMP Jumper Settings TX J11 This pin is ...

Page 6: ...e cathode of LED1 LED2 respectively and Ground The user can first measure the resistor values accurately by applying a known current through connector DxF and Ground and measuring the voltage between DxS and GNDS Then during normal flash or torch operation the voltage measured across the resistor divided by the resistor value will equal the current through the resistor and the LED 2 2 Setup The in...

Page 7: ...The LM3643 will dissipate power especially during high current and long duration flash events Power will also be dissipated on the flash LEDs The EVM layout is designed to minimize temperature rise during operation It is recommended that in order to prevent overheating repeated flash events in very short time intervals is avoided 7 SNVU399 August 2014 LM3643EVM User s Guide Submit Documentation Fe...

Page 8: ...oard Layout www ti com Figure 7 Top Assembly Layer Figure 8 Middle Layer 1 Routing 8 LM3643EVM User s Guide SNVU399 August 2014 Submit Documentation Feedback Copyright 2014 Texas Instruments Incorporated ...

Page 9: ...m Board Layout Figure 9 Middle Layer 2 Routing Figure 10 Bottom Assembly Layer UNMIRRORED 9 SNVU399 August 2014 LM3643EVM User s Guide Submit Documentation Feedback Copyright 2014 Texas Instruments Incorporated ...

Page 10: ...2 SH D1 1 J22 1 2 3 4 5 6 7 8 9 10 J2 N2510 6002 RB 4 1 2 3 J14 DCON Ultra White 1 2 D1 Ultra White 1 2 D2 IN A2 GND A1 VOUT C1 HWEN C2 LED2 D1 TX D2 SW B1 LED1 D3 TORCH TEMP C3 SCL B3 STROBE B2 SDA A3 U1 LM3643YFF L1 DFE201610P 1R0M 10µF C5 10µF C4 10µF C1 10µF C2 LED1 LED2 GND J5 1 2 3 J3 GND 1 2 3 J4 GND PWM0 PWM1 PWM2 SCL SDA PWM1 TX PWM2 EN SW TORCH TEMP SCL SDA PWM0 Schematic www ti com 4 Sc...

Page 11: ...0 mil above insulator Samtec Inc TSW 104 07 G S 2 J22 Header TH 100mil 1pos Gold plated 230 mil above insulator Samtec Inc TSW 101 07 G S 1 L1 Inductor Shielded Metal Composite 1uH 2 6A 0 058 ohm SMD Toko DFE201610P 1R0M 1 LBL1 Thermal Transfer Printable Labels 0 650 W x 0 200 H 10 000 per roll Brady THT 14 423 10 1 R1 RES 0 ohm 5 0 25W 1206 Yageo America RC1206JR 070RL 1 R2 R3 RES 1 0k ohm 5 0 1W...

Page 12: ... provides all the control signals for the simple interface Power to the part must be provided externally A USB cable provided must be connected to the board from a PC The I2 C compatible interface program provides all of the control that the LM3643 part requires For proper operation the USB docking board should be plugged into the PC before the interface program is opened Once connected and the pr...

Page 13: ...er Interface the LM3643 GUI provides the user with access to all of the registers found on the device Through a combination of buttons drop down boxes and sliders the user can configure the LM3643 to perform in the desired mode Please note that no data is written to the device until the Write button found within the corresponding register is pressed Figure 14 Write Buttons 13 SNVU399 August 2014 L...

Page 14: ...e Tx Enable Button creates a continuous pulse train when depressed The Torch EN button toggles the LM3643 s TORCH TEMP pin high when pressed and low depressed The Ext Strobe Button toggles the Strobe pin high for the duration entered in the field next to the button The IR Strobe Button along with the period and width fields generate a continuous pulse train that can be used to generate a current p...

Page 15: ...ndling and use of EVMs and if applicable compliance in all respects with such laws and regulations 10 User has sole responsibility to ensure the safety of any activities to be conducted by it and its employees affiliates contractors or designees with respect to handling and using EVMs Further user is responsible to ensure that any interfaces electronic and or mechanical between EVMs and any human ...

Page 16: ...This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at its own expense FCC Interference Statement ...

Page 17: ...érieur au gain maximal indiqué sont strictement interdits pour l exploitation de l émetteur Mailing Address Texas Instruments Post Office Box 655303 Dallas Texas 75265 Copyright 2014 Texas Instruments Incorporated spacer Important Notice for Users of EVMs Considered Radio Frequency Products in Japan EVMs entering Japan are NOT certified by TI as conforming to Technical Regulations of Radio Law of ...

Page 18: ...esponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related information or support that may be provided by TI Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failur...

Page 19: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments LM3643EVM ...

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