Table of Contents
Advertisement
Quick Links
www.ti.com
User's Guide
DRV8251/AEVM User's Guide
This document is provided with the DRV82X1 family customer evaluation modules (EVM) as a supplement to
the DRV8251, DRV8251A, DRV8231 and DRV8231A data sheets. This user's guide describes the hardware
implementation of the EVM.
Hot surface. Contact may cause burns. Do not exceed limitations of the DRV devices:
4.5-V to 48-V operating supply voltage range • RDS(on), voltage, and current sense/regulation
variants (external shunt resistor and integrated current mirror) - DRV8251: 4.5-V to 48-V, 450-mΩ,
shunt - DRV8251A: 4.5-V to 48-V, 450-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).
1 PCB (Top and Assembly View)..............................................................................................................................................
2
Introduction.............................................................................................................................................................................3
3 Power Connectors and Coding.............................................................................................................................................
EVM.............................................................................................................................................................3
4 Component Description.........................................................................................................................................................
5 Operation of the EVM.............................................................................................................................................................
5.1 H-Bridge Control................................................................................................................................................................
5.2 Current Sensing and Current Regulation Details...............................................................................................................
History......................................................................................................................................................................9
Trademarks
eZ-FET
™
is a trademark of Texas Instruments.
All trademarks are the property of their respective owners.
SLVUC78 - NOVEMBER 2021
Submit Document Feedback
ABSTRACT
Table of Contents
Drivers.............................................................................................................9
Copyright © 2021 Texas Instruments Incorporated
Table of Contents
DRV8251/AEVM User's Guide
2
3
5
6
7
7
1
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Texas Instruments DRV8251/AEVM
Summary of Contents for Texas Instruments DRV8251/AEVM
-
Page 1: Table Of Contents
6 Removing and Installing Supported Motor Drivers......................9 7 Revision History..................................9 Trademarks eZ-FET ™ is a trademark of Texas Instruments. All trademarks are the property of their respective owners. SLVUC78 – NOVEMBER 2021 DRV8251/AEVM User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 2: Pcb (Top And Assembly View)
PCB (Top and Assembly View) www.ti.com 1 PCB (Top and Assembly View) Figure 1-1. PCB Assembly View Figure 1-2. PCB Top 3-D View DRV8251/AEVM User's Guide SLVUC78 – NOVEMBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 3: Introduction
3 Power Connectors and Coding The DRV8251/AEVM uses a single header for power entry to the EVM board. Only a single power supply rail is necessary since an onboard 3.3-V regulator provides power to the MSP430. The minimum recommended VM voltage for the EVM is 4.5 V and the maximum depends on the specific device installed (see reference section). - Page 4 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 DRV8251/AEVM User's Guide SLVUC78 – NOVEMBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
-
Page 5: Component Description
5. Vsense/Ipropi test point provides a voltage that is dependent on the current going through the load for current regulation. a. Said curent, and current regulation can be calculated by the equations in the current sensing and current regulation section. SLVUC78 – NOVEMBER 2021 DRV8251/AEVM User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 6: Operation Of The Evm
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. DRV8251/AEVM User's Guide SLVUC78 – NOVEMBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 7: H-Bridge Control
IPROPI current-sense output allows a microcontroller to detect motor stall or changes in load conditions. VREF determines the threshold of current regulation during start-up and stall events without interaction of a microcontroller. SLVUC78 – NOVEMBER 2021 DRV8251/AEVM User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... - Page 8 Figure 5-4. Current Regulation Equations For more information be sure to refer to the datasheet of the device installed on the EVM. DRV8251/AEVM User's Guide SLVUC78 – NOVEMBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
-
Page 9: Removing And Installing Supported Motor Drivers
7 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. DATE REVISION NOTES November 2021 Initial Release SLVUC78 – NOVEMBER 2021 DRV8251/AEVM User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... - Page 10 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 © 2021, Texas Instruments Incorporated...
Need help?
Do you have a question about the DRV8251/AEVM and is the answer not in the manual?
Questions and answers