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EVM User's Guide: LP8870Q1EVM
LP8870Q1EVM User's Guide
Description
The Texas Instruments LP8870Q1EVM evaluation
module helps designers to evaluate the operation
and performance of the LP8870-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 LP8870Q1EVM.
Get Started
1. Request the LP8870Q1 EVM from
2. Request the LP8870-Q1 data sheet from ti.com.
3. Download the LP887xGUI from ti.com.
SNVU941 – MARCH 2025
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Features
•
Input voltage range 3V to 48V
•
Up to 48V V
•
Six high-precision current sinks
•
Supports built-in phase-shift PWM dimming, hybrid
dimming, current dimming and direct PWM
dimming mode
•
LED brightness controlled globally through I2C
interface or PWM input
•
Extensive fault diagnostics
ti.com
.
Applications
Backlight for:
•
Automotive infotainment
•
Automotive instrument clusters
•
Smart mirrors
•
Heads-Up Displays (HUD)
•
Central Information Displays (CID)
•
Audio-Video Navigation (AVN)
Hardware Image
Copyright © 2025 Texas Instruments Incorporated
boost controller
OUT
LP8870Q1EVM User's Guide
Description
1
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Summary of Contents for Texas Instruments LP8870Q1EVM
- Page 1 Description EVM User's Guide: LP8870Q1EVM LP8870Q1EVM User's Guide Description Features The Texas Instruments LP8870Q1EVM evaluation • Input voltage range 3V to 48V module helps designers to evaluate the operation • Up to 48V V boost controller and performance of the LP8870-Q1 device. This •...
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Page 2: Test Setup
1 Introduction The LP8870Q1EVM helps designers to evaluate the characteristics, operation, and use of the LP8870-Q1 device, a high-performance LED driver for automotive lighting. The LP8870-Q1 device is a high-efficiency LED driver with boost controller. The six 150mA high-precision current sinks support phase shifting that is automatically adjusted based on the number of channels in use. -
Page 3: Hardware Setup
• Connect the USB2ANY module to the PC with the USB cable. • Connect the USB2ANY module to the LP8870Q1EVM with the provided ribbon cable. • Connect the LP8870Q1EVM to the LP886X-LEDLOAD-EVM with a 7-position ribbon cable. Figure 2-2. LP8870Q1EVM Hardware Setup 2.4 Software Installation... -
Page 4: Quick Start-Up Procedure
Figure 2-3. Figure 2-3. LP8870Q1EVM GUI Register Page 2. Input the suitable chip address, default is 0x1E. Click the "Connect to U2A" button on the bottom of the GUI. Then click the green button to enable the device. Finally, click the "Connect to Chip" button on the bottom of the GUI to connect the device. - Page 5 LED setup and spread spectrum configuration. After finishing the setup, choose "enable" in "START_UP_ENABLE" register to light on the device Figure 2-5. LP8870Q1EVM Initial Page SNVU941 – MARCH 2025 LP8870Q1EVM User's Guide Submit Document Feedback Copyright ©...
- Page 6 Faults from the device. When a fault happened, the light below the fault will turn red. Click "Clear SUPPLY_BOOST_STATUS" will clear the fault in the device. Similar action can used in LED status section. Figure 2-6. LP8870Q1EVM Monitor Faults Page LP8870Q1EVM User's Guide SNVU941 –...
- Page 7 2-7), the user can read back the flag register values and corresponding device status. Click the Read button to get the target value from the chip. Figure 2-7. LP8870Q1EVM Flag Page SNVU941 – MARCH 2025 LP8870Q1EVM User's Guide Submit Document Feedback...
- Page 8 3 LP8870Q1EVM Board Layout Figure 3-1 Figure 3-2 illustrate the EVM board layout. Figure 3-1. LP8870Q1EVM Layout - Top Figure 3-2. LP8870Q1EVM Layout - Bottom LP8870Q1EVM User's Guide SNVU941 – MARCH 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 9 6.19k TAB GND 100nF 100V 0.1uF 10µF 4.7µF 4.7µF 0.01uF 0.01uF 4.7µF 4.7µF 4.02k AGND TL1963AQKTTRQ1 EMIGND 1593-2 1593-2 SYNC Figure 4-1. LP8870Q1EVM Schematic SNVU941 – MARCH 2025 LP8870Q1EVM User's Guide Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 10 LP8870Q1EVM Bill of Materials www.ti.com 5 LP8870Q1EVM Bill of Materials Table 5-1 lists the bill of materials for the LP8870Q1EVM. Table 5-1. LP8870Q1EVM Bill of Materials Designator Description Part Number Manufacturer !PCB Printed Circuit Board LED-065 D4, D5, D6 LED, Super Red, SMD, 2.2x1.3x1.4mm...
- Page 11 LP8870Q1EVM Bill of Materials Table 5-1. LP8870Q1EVM Bill of Materials (continued) Designator Description Part Number Manufacturer Resistor, 909kΩ, 1%, 0.1W, AEC-Q200 Grade 0, CRCW0603909KFKEA Vishay-Dale 0603 C13, C19 4.7µF ±10% 50V Ceramic Capacitor X7R 0805 C2012X7R1H475K125AC (2012 Metric) C22, C33, C45 10µF ±10% 16V Ceramic Capacitor X7R 0805...
- Page 12 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 LP8870Q1EVM User's Guide SNVU941 – MARCH 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 13 Automotive T/R SH-J1...SH-J19 Shunt, 100mil, Flash Gold, Black SPC02SYAN Sullins Connector Solutions Fiducial mark. There is nothing to buy or FID1, FID2, FID3 mount. SNVU941 – MARCH 2025 LP8870Q1EVM User's Guide Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 14 Additional Information www.ti.com 7 Additional Information Trademarks All trademarks are the property of their respective owners. LP8870Q1EVM User's Guide SNVU941 – MARCH 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 15 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 16 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 17 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 18 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 19 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 © 2023, Texas Instruments Incorporated...
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Page 20: Important Notice
TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2025, Texas Instruments Incorporated...
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