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Test Setup

3

SNVU685A – December 2019 – Revised June 2020

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Copyright © 2019–2020, Texas Instruments Incorporated

LP8866EVM User's Guide

Figure 1. LP8866EVM Kit

2.2

System/Equipment Requirements

•

DC power supply: 24 V or higher, 6 A or higher

•

LED cable: 7-position ribbon cable

•

PC to run GUI software

•

GUI software

2.3

Hardware Setup

Figure 2

shows the hardware setup of the LP8866EVM.

•

Connect a 12-V external power supply between the power input terminals VBAT+ and GNDin on the
LP8866EVM.

•

Connect the USB2ANY module to the PC with the USB cable.

•

Connect the USB2ANY module to the LP8866EVM with the provided ribbon cable.

•

Connect the LP8866EVM to the LP886X-LEDLOAD-EVM with a 7-position ribbon cable.

Summary of Contents for LP8866EVM

Page 1: ...erials BOM of the LP8866EVM Contents 1 Introduction 2 2 Test Setup 2 3 LP8866EVM Board Layout 10 4 LP8866EVM Schematic 11 5 LP8866EVM Bill of Materials 12 6 LED Load Board 15 List of Figures 1 LP8866E...

Page 2: ...s can be controlled globally through the I C interface or PWM input 1 1 Features The EVM has the following features Up to 48 V Vout boost controller Six high precision current sinks Supports built in...

Page 3: ...r higher LED cable 7 position ribbon cable PC to run GUI software GUI software 2 3 Hardware Setup Figure 2 shows the hardware setup of the LP8866EVM Connect a 12 V external power supply between the po...

Page 4: ...GUI software from the LP8866EVM tools folder Follow the instructions to finish the GUI installation Once installed a shortcut to the GUI is found on the desktop and also in the start up menu under the...

Page 5: ...he bottom left corner of the GUI The button should be like the one shown in Figure 3 There should be a Hardware connected message on the status bar next to the button If it shows Hardware not Connecte...

Page 6: ...n Figure 5 LP8866EVM LED Control Page 2 6 Additional GUI Functions In the selection tab on the left hand side the user can switch between LED Control Monitor Faults Diagnostics and Register Map tabs T...

Page 7: ...T_STATUS 16 bit value for detected duty cycle of PWM input signal PWM_OUTPUT_STATUS 16 bit value for configured duty cycle of PWM output signal LED_CURRENT_STATUS 12 bit current DAC code that brightne...

Page 8: ...herwise the user will need to click READ REGISTER to read the selected register or to click READ ALL REGISTERS to read all registers Clicking on the row of a register automatically updates the corresp...

Page 9: ...ttings as described below 1 Mount R20 to pull up EN input 2 Change pullup and pulldown resistors to select spread spectrum enable R18 or disable R25 option 3 Mount R19 to pull up PWM input for 100 bri...

Page 10: ...ised June 2020 Submit Documentation Feedback Copyright 2019 2020 Texas Instruments Incorporated LP8866EVM User s Guide 3 LP8866EVM Board Layout Figure 9 and Figure 10 illustrate the EVM board layout F...

Page 11: ...NVU685A December 2019 Revised June 2020 Submit Documentation Feedback Copyright 2019 2020 Texas Instruments Incorporated LP8866EVM User s Guide 4 LP8866EVM Schematic Figure 11 shows the LP8866EVM sche...

Page 12: ...V 20 0 65 ohm AEC Q200 Grade 2 SMD SMT Radial F C26 1 4 7uF GCM21BR71C475KA73L MuRata CAP CERM 4 7 uF 16 V 10 X7R AEC Q200 Grade 1 0805 0805 C27 C31 2 0 1uF C0402C104K4RACAUTO Kemet CAP CERM 0 1 uF 1...

Page 13: ...m AEC Q200 Grade 0 SMD Shielded Inductor L3 1 9uH PLT10HH501100PNL MuRata Coupled inductor 9 uH 10A 0 0036 ohm SMD 12 9x6 6mm Q1 1 60V SQJ459EP T1_GE3 Vishay Semiconductor MOSFET P CH 60 V 52 A AEC Q1...

Page 14: ...3 1 TLV70033QDDCRQ1 Texas Instruments Single Output Automotive LDO 200 mA Fixed 3 3 V Output 2 to 5 5 V Input with Low IQ 5 pin SOT DDC 40 to 125 degC Green RoHS no Sb Br DDC0005A C1 0 220pF GRM188R72...

Page 15: ...14 J213 J176 J175 J178 J177 1 3 5 D81A 2 4 D81B 1 3 5 D82A 1 3 5 D83A 1 3 5 D84A 1 3 5 D85A 1 3 5 D86A 1 3 5 D87A 1 3 5 D88A 1 3 5 D89A 1 3 5 D90A 1 3 5 D91A 1 3 5 D92A 1 3 5 D93A 1 3 5 D94A 1 3 5 D95...

Page 16: ...05 07 G S Samtec Header 100mil 5x1 Gold TH 5x1 Header R1 R2 R3 R4 R5 R6 6 CRCW12064R99FKEA HP Vishay Dale Res Thick Film 1206 4 99 Ohm 1 0 75W 3 4W 100ppm C Pad SMD Automotive T R 1206 SH J1 SH J19 19...

Page 17: ...ther than TI b the nonconformity resulted from User s design specifications or instructions for such EVMs or improper system design or c User has not paid on time Testing and other quality control tec...

Page 18: ...These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not in...

Page 19: ...instructions set forth by Radio Law of Japan which includes but is not limited to the instructions below with respect to EVMs which for the avoidance of doubt are stated strictly for convenience and s...

Page 20: ...any interfaces electronic and or mechanical between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electr...

Page 21: ...R DAMAGES ARE CLAIMED THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT 9 Return Policy Except as otherwise provided TI does not offer any refunds returns or exchanges Furthe...

Page 22: ...e resources are subject to change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reprod...

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