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TPS61177AEVM User Guide

User's Guide

Literature Number: SNVU490

OCTOBER 2015

Содержание TPS61177AEVM

Страница 1: ...TPS61177AEVM User Guide User s Guide Literature Number SNVU490 OCTOBER 2015...

Страница 2: ...Boost Switching Frequency 24 6 3 2 Setting the Boost Voltage 24 6 3 3 Setting the Boost Switch Slew Rate 24 6 4 LED Driver Configuration 24 6 4 1 Setting the Maximum LED Current 24 6 4 2 PWM Output F...

Страница 3: ...ge 16 6 Default Jumper Configuration 18 7 TPS61177A EVM Test Setup for Standalone Evaluation 19 8 TPS61177A EVM Test Setup With USB2ANY Connected for Software Control 20 9 TPS61177AEVM Component Place...

Страница 4: ...supply J2 Input This header is the power input GND terminal for the boost converter The terminal provides a power ground PGND connection to allow the user to attach the EVM to a power supply J3 Input...

Страница 5: ...s TThese jumpers are used to bypass 10 series resistors to measure LED string current JP17 Jumper This jumper is used to bypass series resistor on boost feedback VLED input JP18 Jumper This jumper is...

Страница 6: ...eration USB2ANY should be plugged into the PC before the interface program is opened Install and execute the GUI program installation guide will be followed below Power the evaluation board 2 2 1 Inst...

Страница 7: ...Up Click Next button Check to accept the agreement and click Next button to proceed with installation 7 SNVU490 OCTOBER 2015 List of Tables Submit Documentation Feedback Copyright 2015 Texas Instrumen...

Страница 8: ...gram Files x86 Texas Instruments TPS61177A folder and Texas Instruments TPS61177AEVM in start menu Check to create a desktop icon for the program and click Next button 8 List of Tables SNVU490 OCTOBER...

Страница 9: ...m Set Up Click Install button Click Finish button to finish installation and launch the program 9 SNVU490 OCTOBER 2015 List of Tables Submit Documentation Feedback Copyright 2015 Texas Instruments Inc...

Страница 10: ...s window will pop up Depending on firmware versions in USB2ANY adaptors this firmware uploader will appear and then follow the instruction on this window 10 List of Tables SNVU490 OCTOBER 2015 Submit...

Страница 11: ...able and plugging it while pressing S1 button this window will pop up and it is ready to be updated Press Update Firmware button 11 SNVU490 OCTOBER 2015 List of Tables Submit Documentation Feedback Co...

Страница 13: ...n with the board by the application is confirmed by the Connected field at the bottom left corner with Green dot This green dot becomes red when USB2ANY is not detected by or disconnected from the PC...

Страница 14: ...irst Page In order to control registers of the device click the icon on the upper left corner and select Registers page option 14 List of Tables SNVU490 OCTOBER 2015 Submit Documentation Feedback Copy...

Страница 15: ...gure 4 Option to Select Register Control This is the register control window selected by the page option 15 SNVU490 OCTOBER 2015 List of Tables Submit Documentation Feedback Copyright 2015 Texas Instr...

Страница 16: ...any register values need to changed simply double click on the individual bit values to change it in this table or press Write Register button to write all the registers at a time if Deferred is sele...

Страница 17: ...his including other controls such as ILED max boost SW freq slew rate and UVLO can be also controlled through S W GUI See the TPS61177A data sheet SNVSA76 for detailed descriptions of the registers an...

Страница 18: ...77A standalone evaluation without evaluation software or the evaluation with the software Figure 7 shows the picture of the TPS61177A EVM board setup for the standalone evaluation LED load WLEDEVM 260...

Страница 19: ...of JP9 or simply connect a jumper connector to JP9 to high position 100 PWMB input Check if EN input is at high position of JP1 Turn on the external supplies 2 4 Instructions for Evaluation With Soft...

Страница 20: ...le must be connected to the USB2ANY board from a PC The default jumper connection of JP1 EN and JP9 PWM can be removed to use software control to enable and light up the board J17 and J18 should be co...

Страница 21: ...ti com TPS61177AEVM Component Placement Figure 9 TPS61177AEVM Component Placement Layout 21 SNVU490 OCTOBER 2015 List of Tables Submit Documentation Feedback Copyright 2015 Texas Instruments Incorpora...

Страница 22: ...Schematic www ti com 4 Schematic Figure 10 TPS61177AEVM Schematic 22 List of Tables SNVU490 OCTOBER 2015 Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated...

Страница 23: ...RTH_61300211121 LED5 TSW 102 07 G S JP15 Header 100mil 2x1 Gold TH 1 WURTH_61300211121 LED6 TSW 102 07 G S JP16 Header 100mil 2x1 Gold TH 1 IHLP 2020BZ IHLP2020BZER100M01 IHLP2020BZER100M01 L1 Inducto...

Страница 24: ...be driven Additionally component constraints will affect operating frequency selection A calculation method is described in datasheet for selecting the boost operating point and external components a...

Страница 25: ...rt up until the VINB voltage is higher than the UVLO threshold which is preset by EEPROM register data During normal operation if the VINB drops below UVLO with 200 mV hysteresis the TPS61177A immedia...

Страница 26: ...h the programmed register settings so they can be loaded to register at next power up Writing 80h to register addr FFh will write EEPROM with updated values or check WED bit checkbox of the GUI 7 Rela...

Страница 27: ...sponsible 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 inf...

Страница 28: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments TPS61177AEVM...