Texas Instruments DRV8251/AEVM Скачать руководство пользователя страница 4 | Manualshive

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a.

Figure 3-1. MSP-EXP430FR5969 connected to EVM

3. Once the code is ready to be flashed to the MCU, click on the "Debug" icon on the top left of the window.

a.

Figure 3-2. CCS Debug Icon

4. If there are no compiling or linking issues, a "Play" button will appear on the top left window. Click on it to

run the program. If you get any errors in the code or any other error messages, please submit a post on

for assistance.

5. Congrats! Your EVM is now programmed with your custom code. You may now disconnect the EVM from the

LP.

Power Connectors and Coding

4

DRV8251/AEVM User's Guide

SLVUC78 – NOVEMBER 2021

Submit Document Feedback

Copyright © 2021 Texas Instruments Incorporated

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Содержание DRV8251/AEVM

Страница 1: ...0 mΩ mirror DRV8231 4 5 V to 33 V 600 mΩ shunt DRV8231A 4 5 V to 33 V 600 mΩ mirror Keep the peak current below 1 6 A RMS to avoid temperatures above 130 C at 25 C ambient temperature Table of Contents 1 PCB Top and Assembly View 2 2 Introduction 3 3 Power Connectors and Coding 3 3 1 Programming EVM 3 4 Component Description 5 5 Operation of the EVM 6 5 1 H Bridge Control 7 5 2 Current Sensing and...

Страница 2: ...ly View Figure 1 1 PCB Assembly View Figure 1 2 PCB Top 3 D View PCB Top and Assembly View www ti com 2 DRV8251 AEVM User s Guide SLVUC78 NOVEMBER 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Страница 3: ...es preprogrammed to control basic DC motor operation If changing the firmware via the external eZ FET emulation tool do not supply power to the VM connector on the EVM The eZ FET board provides the necessary power during programming when connected to the J6 connector Note that a four pin angled male header is required and must be soldered to J21 of this Launchpad from V pin to GND pin shown in ima...

Страница 4: ...will appear on the top left window Click on it to run the program If you get any errors in the code or any other error messages please submit a post on e2e ti com for assistance 5 Congrats Your EVM is now programmed with your custom code You may now disconnect the EVM from the LP Power Connectors and Coding www ti com 4 DRV8251 AEVM User s Guide SLVUC78 NOVEMBER 2021 Submit Document Feedback Copyr...

Страница 5: ... the setting for VREF When turning it clockwise it increases gradually until it reaches its limit adjusting VREF for 3 3 V a VREF is responsible for current regulation threshold by lowering the value in VREF turning it counterclockwise you will lower the current regulation threshold 4 IN1 and IN2 test points will display the PWM signals coming from the microcontroller Be sure to refer to the stick...

Страница 6: ...its of the device see section above for max limits for 8231 series it is 33 V 4 Enable power supply 5 The status LED D1 Bottom left green led will turn on 6 Disable power and connect load in J3 as shown in Figure 5 2 Figure 5 2 Power and Load Connected 7 Re enable power 8 Turn VREF potentiometer all the way clockwise a This will make Itrip the maximum value possible Operation of the EVM www ti com...

Страница 7: ...For example to drive a motor forward with 50 of its max RPM IN1 1 and IN2 0 during the driving period and IN1 1 and IN2 1 during the other period Alternatively the coast mode IN1 0 IN2 0 for fast current decay is also available The input pins can be powered before VM is applied FORWARD REVERSE OUT1 OUT2 2 1 2 2 Forward drive Slow decay brake VM 1 OUT1 OUT2 2 1 2 2 Reverse drive Slow decay brake VM...

Страница 8: ...a known level can significantly reduce the system power requirements and bulk capacitance needed to maintain stable voltage especially for motor startup and stall conditions Current regulation for both variants will be dependent on Itrip a set threshold which once exceeded will cause the device to enter current regulation This threshold can be adjusted by the VREF potentiometer and follows the fol...

Страница 9: ...A Solder the device to footprint U2 Make sure pin 1 of device aligns with the dot on the PCB Depopulate C6 R5 R7 R8 R13 R14 and U2 Populate R4 and R7 with 0 ohm resistor Populate R5 with 1 5 kOhm resistor 8251A switching to 8251 Solder the device to footprint U2 Make sure pin 1 of device aligns with the dot on the PCB Depopulate R4 R5 and R7 Populate R5 and R14 with 0 ohm resistor Populate R7 with...

Страница 10: ...o 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 reproduction and display of these resources is prohibited No license is granted to any other TI intellectual property right or to any third party intellectual property right TI disclaims responsibility for and you will fully indemn...

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