This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
I have a couple of questions regarding the drv8432
1. When operating in "dual full bridge" mode (M1=M2=M3=0) can the supply voltages for bridge 1 and 2 be set independently [PVDDA = PVDDB = V1 and PVDDC = PVDDD = V2]?
2. Also in this mode and with different supply voltages, will the CBC current limit threshold be same for both bridges?
3. The ABSOLUTE MAXIMUM RATINGS suggest that the PWM_X to GND should be under 4.2V. What is the nominal ON voltage value for PWM_X ? I need the value to implement a resistor divider for the PWM inputs as my micro puts out a 0 to 5V PWM.
4. It would also be helpful if you can answer this question as there have been no replies to it !!!!!!!!
For question 1 and 2, we do not recommend to use different VM levels for bridges. But still I will check with our designers whether there is risk to do so and back here later.
question 3, for PWM_X, LOW range is 0~0.8V. HIGH range is 2~3.6V.
Motor Application Team
---- Please Click the Verify Answer button on this post if it answers your question ----
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to Wilson Zuo:
We checked and the answer for question 1 and 2 is that all the four PVDD pins should have the same voltage level at all mode configurations.
Please do not use DRV8432 as the way you mentioned.
Thank you for the reply !!!!!!!!!!!
If you can, please take a look at the following question and give a suggetion
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.