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User's Guide
LP8864 Evaluation Module
The Texas Instruments LP8864EVM evaluation module helps designers to evaluate the operation and
performance of the LP8864-Q1 device. This document includes a hardware setup instructions, software
instructions, a complete schematic diagram, printed-circuit board (PCB) layout, and bill of materials (BOM) of the
LP8864EVM.
1
Introduction.............................................................................................................................................................................2
1.1 Features.............................................................................................................................................................................
1.2
Applications........................................................................................................................................................................2
Setup................................................................................................................................................................................3
Kit..................................................................................................................................................................3
2.3 Hardware Setup.................................................................................................................................................................
Installation...........................................................................................................................................................4
2.5 Quick Start-Up Procedure..................................................................................................................................................
2.6 Additional GUI Functions...................................................................................................................................................
3 LP8864EVM Board Layout...................................................................................................................................................
Schematic.........................................................................................................................................................11
Materials................................................................................................................................................12
Board....................................................................................................................................................................14
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SNVU731 - NOVEMBER 2020
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ABSTRACT
Table of Contents
Requirements...............................................................................................................................3
Evaluation...............................................................................................................................9
Copyright © 2020 Texas Instruments Incorporated
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LP8864 Evaluation Module
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Summary of Contents for Texas Instruments LP8864
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Page 1: Table Of Contents
The Texas Instruments LP8864EVM evaluation module helps designers to evaluate the operation and performance of the LP8864-Q1 device. This document includes a hardware setup instructions, software instructions, a complete schematic diagram, printed-circuit board (PCB) layout, and bill of materials (BOM) of the LP8864EVM. -
Page 2: Introduction
1 Introduction The LP8864EVM helps designers to evaluate the characteristics, operation, and use of the LP8864-Q1 device, a high-performance LED driver for automotive lighting. The LP8864-Q1 device is a high-efficiency LED driver with boost controller. The four 200-mA high-precision current sinks support phase shifting that is automatically adjusted based on the number of channels in use. -
Page 3: Test Setup
DC power supply: 24 V or higher, 6 A or higher • LED cable: 5-position ribbon cable • PC to run GUI software • GUI software SNVU731 – NOVEMBER 2020 LP8864 Evaluation Module Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated... -
Page 4: Hardware Setup
Once installed, a shortcut to the GUI is found on the desktop and also in the start-up menu under the Texas Instruments folder. LP8864 Evaluation Module SNVU731 – NOVEMBER 2020 Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated... -
Page 5: Quick Start-Up Procedure
Test Setup 2.5 Quick Start-Up Procedure 1. After the hardware is connected successfully, run the GUI software. Turn on the 12-V external power supply. Select the right device variant of the EVM, which is LP8864, as shown in Figure 2-3. - Page 6 Test Setup www.ti.com 3. Click the EXPLORE LP8864 button to go to the LP8864EVM GUI home page (see Figure 2-4). Figure 2-4. LP8864EVM GUI Home Page 4. Click the START button to go to the LED Control page (see Figure 2-5).
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Page 7: Additional Gui Functions
From the Monitor Faults page (see Figure 2-6), the user has access to LP8864-Q1 fault status bits. Faults can be cleared by software by clicking the Clear All button. Fault interrupt can be enabled or disabled globally by toggling the Interrupt All button. Besides that, each fault interrupt and each fault status can be controlled individually. - Page 8 AUTO_BOOST_FREQ_SEL: boost switching frequency value from PWM_FSET resistor detection • MODE_SEL: LED dimming mode value from MODE resistor detection Figure 2-7. LP8864VM Diagnostics Page LP8864 Evaluation Module SNVU731 – NOVEMBER 2020 Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated...
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Page 9: Instructions For Standalone Evaluation
LP8864EVM. 2. Connect the LP886X-LEDLAOD-EVM board (4 strings, 8 LEDs per string) to J10 on the LP8864EVM. 3. Turn on the external power supply. SNVU731 – NOVEMBER 2020 LP8864 Evaluation Module Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated... -
Page 10: Lp8864Evm Board Layout
3 LP8864EVM Board Layout Figure 3-1 Figure 3-2 illustrate the EVM board layout. Figure 3-1. LP8864EVM Layout - Top Figure 3-2. LP8864EVM Layout - Bottom LP8864 Evaluation Module SNVU731 – NOVEMBER 2020 Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated... -
Page 11: Lp8864Evm Schematic
OUT4 LP8864QDCPRQ1 VDD_5V TLV70033QDDCRQ1 VDD_3V3 0 R34 VDDEXT SYNC 0 R35 22uF VDD_5V VDD_3V3 10uF TPS7B8250QKVURQ1 0 R37 VDDIO VDD_3V3 Figure 4-1. LP8864EVM Schematic SNVU731 – NOVEMBER 2020 LP8864 Evaluation Module Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated... -
Page 12: Lp8864Evm Bill Of Materials
Inductor, Shielded, Powdered Iron, 2.2 uH, 10.5 A, 0.0137 ohm, SMD 322x158x322mil 22uH IHLE4040DDER220M5A Vishay-Dale Inductor, Shielded, 22 µH, 4.1 A, 0.07544 ohm, AEC-Q200 Grade 0, SMD Shielded Inductor LP8864 Evaluation Module SNVU731 – NOVEMBER 2020 Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated... - Page 13 RES, 0, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 0603 R20, R25, R26 10.0k RMCF0603FT10K0 Stackpole Electronics Inc RES, 10.0 k, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 0603 SNVU731 – NOVEMBER 2020 LP8864 Evaluation Module Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated...
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Page 14: Led Load Board
J236 J237 J238 J239 J240 J241 J242 J243 J244 J245 J246 J247 J248 J249 J250 J251 J252 J253 J254 J255 Figure 6-1. LP886X-LEDLOAD-EVM Schematic LP8864 Evaluation Module SNVU731 – NOVEMBER 2020 Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated... - Page 15 SH-J1...SH-J19 SPC02SYAN Shunt, 100mil, Flash Gold, Black Closed Top 100mil Shunt Solutions FID1, FID2, FID3 Fiducial mark. There is nothing to buy or mount. SNVU731 – NOVEMBER 2020 LP8864 Evaluation Module Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated...
- Page 16 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
- Page 17 www.ti.com Regulatory Notices: 3.1 United States 3.1.1 Notice applicable to EVMs not FCC-Approved: FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product.
- Page 18 www.ti.com Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à...
- Page 19 www.ti.com 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.
- Page 20 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2019, Texas Instruments Incorporated...
- Page 21 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2020, Texas Instruments Incorporated...