Texas Instruments DRV8251/AEVM, Руководство пользователя

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6 Removing and Installing Supported Motor Drivers
The EVM can support the DRV8251/DRV8251A/DRV8231/DRV8231A devices. Below are step-by-step
instructions on how to remove and place different drivers on the EVM:
1. Disconnect power from the EVM.
2. Carefully de-solder the device from the PCB. Make sure to follow proper soldering and ESD protection
procedures to prevent damage to the EVM.
3. Carefully solder the new device to the EVM. Visit ti.com or any authorized third party vendor to purchase the
desired driver.
4. The EVM uses a combination of resistors to identify the device that is populated on the board.
5. The firmware will function slightly different depending on the device that is on the board. After installing the
new device, make sure to populate the appropriate resistors.
The Table 6-1 shows the changes that need to be implemented when switching from one device to the other.
Table 6-1. Procedure For Soldering New Device and Passives to EVM
New device being installed Soldering procedures
8251 switching to 8251A
• 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 0.15 ohm resistor
• Populate C6 with 0.1 uF cap
• Populate R8 with 1k ohm resistor
• Populate R13 with 4.02 k ohm resistor
• Populate U4 with TLV9001IDCKRBe mindful of warnings in voltage differences.
This hardware can be used to test and validate the 8231 series as it is pin to pin compatible with the DRV8251
series. The steps of switching between DRV8231 and DRV8231A are identical as those between the DRV8251
to 8251A and vice versa.Be mindful of warnings in voltage differences.
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
www.ti.com Removing and Installing Supported Motor Drivers
SLVUC78 – NOVEMBER 2021
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DRV8251/AEVM User's Guide 9
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