Part Number: ISO1212
Customer would like to design the ISO1212 for AC motor. There are some questions related to the ISO1212's performance and design.
1. How to calculate the power consumption of the chip?
2. How to select the C3 filter value on ISO1212EVM with consideration of the minimux turn-on duty ?
3. What's the abxMAX current through into Pin7 of the device?
4. How much the current going though to pin 8 of the device?
5. Is Turn-ON threshold able to be adjusted to 3V, and Turn-Off be ajusted to 2V?
Power consumed the ISO1212 will depend on the current limits set by the resistors. Does the customer know the desired current limit and voltage of the system? Current going into pins 7 & 8 will again depend on the Rth and Rsense resistors being used. Table 6.9 of the datasheet has information on this with common use cases. C3 is chosen so that the low pass filter it forms with R1 does not affect the data rate being used. 3V and 2V seem very low turn-on and turn-off thresholds. The ISO121x family can only handle down to a 6.5V VIL threshold.
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 Lucas Schulte9:
In reply to Manuel Chavez:
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.