User Manual

ManualsBrandsonsemi ManualsLED Driveronsemi NCV78XXXGEVK LED Driver Platform Evaluation Board

EVAL BOARD USER’S MANUAL

www.onsemi.com

 Semiconductor Components Industries, LLC, 2021

October, 2021 − Rev. 0

1 Publication Order Number:

EVBUM2815/D

NCV78XXX LED Driver /

Platform Evaluation Board

User's Manual

NCV78XXXGEVK

Introduction

The evaluation board allows in an easy way to demonstrate features

of NCV78xxx device family – LED Drivers for Automotive Front

Lighting. Based on one common platform, 2 sizes of boards are

available: half size LED Driver EVK intended for single product

evaluation and full size LED Platform EVK allowing evaluation of

multichannel system. User friendly GUI SW detects all boards

automatically and allows to access and control any register or external

I/O pin of the devices.

The provided motherboard gives a lot of flexibility during your

development process. Easy access to several signals makes debugging

very easy and gives you the possibility to connect the evaluation kit

with your own application which reduces the development time.

Evaluation of the complete NCV78xxx family is made very easy by

means of the separate daughter boards.

Figure 1. Evaluation Board

valuation Board Features

• Wide Range of Supply Voltage: 6 to 30 V

• Daughter Board Auto−detection

• Easy Access via Test Points to I/O Signals

• Single Side PCB Assembly

• User Friendly GUI SW

• Rapid Development Support

• Reference PCB Layout

Summary of content (13 pages)

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EVAL BOARD USER’S MANUAL www.onsemi.com NCV78XXX LED Driver / Platform Evaluation Board User's Manual NCV78XXXGEVK Introduction The evaluation board allows in an easy way to demonstrate features of NCV78xxx device family – LED Drivers for Automotive Front Lighting. Based on one common platform, 2 sizes of boards are available: half size LED Driver EVK intended for single product evaluation and full size LED Platform EVK allowing evaluation of multichannel system.
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NCV78XXXGEVK Table 1. ABSOLUTE MAXIMUM RATINGS Parameter Value Unit −0.3 to 60 V 3 A Junction Temperature −40 to 175 °C Ambient Temperature −40 to 105 °C Supply Voltage (VBAT) Output LED Current Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. Table 2.
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NCV78XXXGEVK Getting Started The evaluation board can be supplied through a standard 5.5 x 2.5 mm power jack DC connector, but preferred way is to connect current limited laboratory power supply through standard 4 mm bananas. Battery voltage should be connected first, followed by connection of USB mini cable. Individual battery inputs can be shorted together on board by means of zero ohm resistors R101, R106, R111 (and R126, R116, R121 for full size board).
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NCV78XXXGEVK +6 to +30 V BatteryInput Reverse Battery Protection 3.3V, 5V, 12V Linear Regulators LED outputs Buck position 1, 2, 3 Diodes to Linear Reg. . GND 2.5 mm DC Power Con. Mini USB cable to PC Booster position ONMCU Control Board Figure 5. NCV78XXX LED Driver Evaluation Board Picture www.onsemi.
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NCV78XXXGEVK Using of GUI SW After connection of the battery supply and mini USB After clicking “Connect” button, the successful connection status should be indicated in status bar: cable to the evaluation board, the button in status bar should be used to relist all active virtual COM ports. From the list the COM port where evaluation board is connected should be selected. In case there is no real hardware available, the “Mockup” simulation mode can be selected to run the GUI SW.
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NCV78XXXGEVK Current state of the GUI SW including all control elements can be saved and restored in the “Config” menu. Please note that format of the number in any text box can be changed by clicking the right mouse button. For debugging purposes, logging of the communication between GUI SW and Evaluation board can be useful. This can be enabled in menu “Project” by item “Logs”: Scripting Support GUI SW framework allows to access and control all GUI elements from Python scripts.
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NCV78XXXGEVK SPI Control registers tabSPI Status registers tab Trimming constants tab External pin control High level Application control tab Figure 7. Basic NCV78xxx Control Window Daughter Board’s EEPROM Memory Manipulation Content of SPI Control registers can be saved into daughter board’s EEPROM memory by button “Write to EEPROM” and restored by “Read from EEPROM” on “Control registers” tab.
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NCV78XXXGEVK specific information, values of assembled components become available and can be modified and written into EEPROM memory by Write button. For low level access to EEPROM memory dedicated “SPI EEPROM” window is available. SPI channel number can be simply identified with help of the following picture and schematic of the specific daughter board. As daughter board usually occupies more slots, it needs to be checked which channel is used for NCV78xxx device and which for on board EEPROM memory.
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NCV78XXXGEVK SPI channel 4 (EEPROM memory) SPI channel 5 (NCV78xxx device) SPI channel 3 (NCV78xxx device) SPI channel 2 (EEPROM memory) SPI channel 6 (EEPROM memory) SPI channel 7 (NCV78xxx device) SPI channel 8 (EEPROM memory) SPI channel 9 (NCV78xxx device) Half size LED Driver EVK SPI channel 10 (EEPROM memory) SPI channel 11 (NCV78xxx device) SPI channel 1 (NCV78xxx device) SPI channel 0 (EEPROM memory) SPI channel 12 (EEPROM memory) SPI channel 13 (NCV78xxx device) SPI channel 14 (EEPROM memory)
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NCV78XXXGEVK Installation of GUI SW e) 1. Run “setup.exe” installer: 2. Follow instructions and click Next button until finish: a) f) b) 3. Connect USB mini cable to PC In case the USB drivers for GUI SW are not yet present on PC, the following procedure should be used: 4. Open Device Manager (Press Win+R and type devmgmt.msc) c) 5. Update Driver of not correctly installed device “CDC Virtual Com” by Right button click and select “Update Driver Software” d) www.onsemi.
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NCV78XXXGEVK 8. Click on “Browse” and select path to driver − default location is “C:\Users\Public\LED Driver EVK\driver” if not changed during GUI SW installation a) 6. Select “Browse my computer…” then “Let me pick from a list...” a) b) b) c) 7. Click on “Next” then click on “Have Disk…” a) d) b) 9. Finish USB Driver update by click on “Close” www.onsemi.
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NCV78XXXGEVK 10. Verify COM port device “Communication Device Class SFW example” Evaluation Board Schematic and Layout For Evaluation Board Schematics and Layouts please refer to documents placed on specific Evaluation board webpages. References [1] ON Semiconductor, NCV78763−D: Power Ballast and Dual LED Driver for Automotive Front Lighting 2nd Generation, rev.8, February 2019 [2] ON Semiconductor, NCV78702−D: Multiphase Booster LED Driver for Automotive Front Lighting, rev.
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onsemi, , and other names, marks, and brands are registered and/or common law trademarks of Semiconductor Components Industries, LLC dba “onsemi” or its affiliates and/or subsidiaries in the United States and/or other countries. onsemi owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of onsemi’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf.