Texas Instruments TPS61310EVM-638 User Manual
Texas Instruments TPS61310EVM-638 User Manual

Texas Instruments TPS61310EVM-638 User Manual

Evaluation module

Advertisement

Quick Links

TPS61310EVM-638 Evaluation Module User Guide
This user's guide describes the characteristics, functions, and use of the TPS61310EVM-638 Evaluation
Module (EVM). This EVM demonstrates the Texas Instruments TPS61310 LED camera flash and video
light driver with I2C interface. This document includes setup instructions, a schematic diagram, a bill of
materials and PCB layout drawings for the EVM.
1
INTRODUCTION
The TPS61310 is an integrated system with a broad feature set for driving up to three LEDs for
still-camera flash and video-camera lighting applications. The power stage is capable of supplying a
maximum total current of up to 1600mA (2x400mA for LED1 and LED3, 800mA for LED2).
The device operates as an single, dual or triple channel LED driver generating the required LED forward
voltages. The internal step-up converter boosts the input voltage adjusted to the required LED forward
voltage and controls the LED current with the integrated current sinks.
The internal step-up converter can be used for further applications as well, such as supplying an audio
amplifier.
All functions and feature sets can be either addressed by dedicated hardware pins or with the I
interface.
1.1
Requirements
To operate this EVM, connect and properly configure the following components:
Personal Computer:
– OS: Windows™ 2000 or Windows™ XP
– USB port
– Minimum of 30MB of free hard disk space (100 MB recommended)
– Minimum of 256MB of RAM
Printed Circuit Board Assembly:
– The board containing the TPS61310 in CSP-20 package.
– External components
– High power WLEDs
USB-To-GPIO Adapter:
– This USB interface adapter is used to evaluate the I
using the USB interface. It receives the USB command, converts the signal into an I
2
sends the I
following URL:
Software:
– Texas Instruments provides software to assist in evaluating this EVM. The software can either be
installed from the supplied CD or download from the
SLVU419 – April 2011
Submit Documentation Feedback
C signal to the TPS61310EVM board. The USB-To-GPIO can be supplied at the
ti.com
Copyright © 2011, Texas Instruments Incorporated
2
C controlled device via a personal computer
TI Web site
TPS61310EVM-638 Evaluation Module User Guide
User's Guide
SLVU419 – April 2011
2
C
2
C protocol and
1

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the TPS61310EVM-638 and is the answer not in the manual?

Questions and answers

Summary of Contents for Texas Instruments TPS61310EVM-638

  • Page 1 URL: ti.com • Software: – Texas Instruments provides software to assist in evaluating this EVM. The software can either be installed from the supplied CD or download from the TI Web site SLVU419 – April 2011 TPS61310EVM-638 Evaluation Module User Guide Submit Documentation Feedback Copyright ©...
  • Page 2: Evm Hardware Setup

    These jumpers facilitate LED current measurements. current evaluation Table 2. Default Jumper Settings JUMPER DEFAULT High Unconnected High High Unconnected Unconnected Connected SLVU419 – April 2011 TPS61310EVM-638 Evaluation Module User Guide Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
  • Page 3 In both interfaces, special care is taken to warn the user in case of hardware power or connection problems via indicators at the bottom of the window. SLVU419 – April 2011 TPS61310EVM-638 Evaluation Module User Guide Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
  • Page 4 In both cases, the various LED parameters are easily modified by using the sliders. The battery droop is also selectable among several values. To run and stop the chosen configuration, a START and a STOP button are provided. SLVU419 – April 2011 TPS61310EVM-638 Evaluation Module User Guide Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
  • Page 5 The Reset and Read button writes REGISTER0[0]=1 and reads all the registers. Values shown in the table may differ from those presented in the datasheet as some bits assume two different functions in read and write operations. SLVU419 – April 2011 TPS61310EVM-638 Evaluation Module User Guide Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
  • Page 6: Test Results

    - Time = 200 µs/div V - Input Voltage - V Figure 6. LED Power Efficiency vs Input Voltage Figure 7. Video Light Startup SLVU419 – April 2011 TPS61310EVM-638 Evaluation Module User Guide Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
  • Page 7: Voltage Mode

    Figure 14 show the board layout for the TPS61310EVM-638 PCB. The nodes with high switching frequencies and currents are kept as short as possible to minimize trace inductance. Careful attention has been given to the routing of high-frequency current loops. A single-point grounding scheme is used. Also, the majority of the heat sinking for this device occurs through the top layer traces and vias pulled from the IC’s solder bumps that carry high currents.
  • Page 8 BOARD LAYOUT www.ti.com Figure 11. Top Layer Figure 12. Layer 2 SLVU419 – April 2011 TPS61310EVM-638 Evaluation Module User Guide Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
  • Page 9 BOARD LAYOUT www.ti.com Figure 13. Layer 3 Figure 14. Bottom Layer SLVU419 – April 2011 TPS61310EVM-638 Evaluation Module User Guide Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
  • Page 10 SCHEMATICS AND BILL OF MATERIALS www.ti.com SCHEMATICS AND BILL OF MATERIALS Figure 15. TPS61310EVM-638 Schematic Table 3. TPS61310EVM-638 Bill of Materials Qua. Ref Des Value Size Part Number C3225X7R1C2 C1, C2 22µF Capacitor, Ceramic, 16V, X5R 1210 Capacitor, Ceramic, 10-µF, 6.3-V,...
  • Page 11 SCHEMATICS AND BILL OF MATERIALS www.ti.com Table 3. TPS61310EVM-638 Bill of Materials (continued) 0.130 X 0.130 FDSE0312- 2.2uH Inductor, SMT Toko inch 2R2M-P3 NCP18WM224 CRCW0603- NTC1 Resistor, Chip, 1/16W, 5% 0603 Vishay J03RB xxx-J R1, R3 2.20kΩ Resistor, Chip, 1/16W, 1% 0603 10.0kΩ...
  • Page 12: Important Notice

    IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.
  • Page 13: Texas Instruments

    Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments TPS61310EVM-638...

Table of Contents