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Texas Instruments DRV814x-Q1EVM User Manual Download Page 15

Figure 5-1. DRV824x_DRV814x-Q1EVM GUI Home Screen

3. After clicking the correct EVM type, the GUI application will initiate communications with the EVM. 

Connection confirmation will be displayed as shown below in 

Figure 5-2

:

Note

If the EVM GUI does not register a successful connection after multiple attempts do a firmware 
update and then select an EVM variant for connecting using the GUI application.

Figure 5-2. Successful EVM Connection

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EVM GUI Operation

SLVUC46A – MARCH 2021 – REVISED JULY 2021

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DRV824x_DRV814x-Q1EVM User’s Guide

15

Copyright © 2021 Texas Instruments Incorporated

Summary of Contents for DRV814x-Q1EVM

Page 1: ...Setup 14 5 2 Launching the DRV824x_DRV814x Q1EVM GUI Application 14 5 3 Using the DRV824x_DRV814x Q1EVM GUI Application 16 Trademarks All trademarks are the property of their respective owners 1 Revis...

Page 2: ...eep mode is provided to achieve ultra low quiescent current draw by shutting down most of the internal circuitry The device offers voltage monitoring and load diagnostics as well as protection feature...

Page 3: ...VM and DRV814x Q1EVM in the VQFN HotRod package The 28 pin leaded package HVSSOP or HTSSOP version of EVM leverages much of the same design and is also covered by this document From a firmware and GUI...

Page 4: ...mware updates Main supply input A supply voltage ranging from 4 5 VDC to 36 VDC from a battery or a DC voltage source is connected to the large screw thermal block fused and reverse polarity protectio...

Page 5: ...re 3 2 Typically resetting the MCU is not necessary however the MCU will automatically clear the nFAULT indicator on initial power up if you find the fault indicator is set due to cycling the power on...

Page 6: ...out a computer or USB connection You can connect a brushed DC motor across OUT1 and OUT2 terminals of the DRV824x EVM or OUT and GND of the DRV814x EVM or simply an oscilloscope Note No diagnostics ar...

Page 7: ...gure 3 4 illustrates the portions of the EVM associated with the main supply input powering the DRV824x Q1 or DRV814x Q1 device and the associated load s Starting from the upper left and working clock...

Page 8: ...ting period Additionally BOM cost and PCB area is reduced by eliminating a large external power shunt resistor The off time PWM current regulation level can be configured during motor operation throug...

Page 9: ...ediately adjacent to the silk screen label Note PH IN2 signal is not present on DRV814x Q1EVM variants Refer to your EVM schematic for more details Figure 3 6 DRV824x Q1EVM Signal and Control Header 3...

Page 10: ...ly off It is also normal to briefly see this LED flash when the MCU becomes active or RESET is pressed This LED may flash continuously until VM power supply is turned on D3 VM VM supply indicator Norm...

Page 11: ...et for more information regarding pin LVL settings and associated configuration Note IPROPI is common to both hardware and SPI EVM device variants and performs the same function Figure 3 8 DRV824x and...

Page 12: ...r package corresponding to your operating system extract the archive and run the installer In Windows two new ports should be enumerated when the EVM is connected Figure 4 1 Figure 4 1 MSP430 EZFET_LI...

Page 13: ...814x Q1EVM GUI 2 From the gallery click the icon in the latest version and select the installer for your operating system Windows Linux or Mac Refer back to Figure 4 3 in the previous section for a vi...

Page 14: ...situations such as while disconnecting and reconnecting VM power before the power supply capacitors are fully discharged a proper firmware reset may not happen A proper reset is indicated by the STAT...

Page 15: ...in Figure 5 2 Note If the EVM GUI does not register a successful connection after multiple attempts do a firmware update and then select an EVM variant for connecting using the GUI application Figure...

Page 16: ...Variant The Register Map page shown below in Figure 5 4 allows the user to read write values to individual fields Register read back is read Every 1 sec by default Enabling this will start periodicall...

Page 17: ...iagnostics MODE Programs the S_MODE register and will alter the appearance of the BRIDGE CONTROL depending on your selection There is a difference in MODE options between the DRV824x and DRV814x devic...

Page 18: ...er This is especially important when in Independent Half Bridge mode The load connection warning will appear every time the user selects a new mode or repeatedly selects the current mode Figure 5 7 sh...

Page 19: ...DRIVER is disabled Off state It will show up in a separate pop up window as can be seen in Figure 5 8 A representative table from the device datasheet is displayed in this window for guidance to perf...

Page 20: ...of the load current during the sampling window The IPROPI analog output pin available on the header J4 of the EVM can be used for accurate real time measurement using a multimeter or for capturing th...

Page 21: ...mage When operating the EVM at the maximum device specifications and higher ambient temperature external cooling fans may be required to minimize potential fire hazard personal injury or both 5 3 4 Up...

Page 22: ...are subject to 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...

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