Hi CSPS team
My customer have several questions about TMCS1101 and listed below:
- As TMCS1101 generate the offset voltage by internal reference, this reference accuracy will have huge influence on current sensing accuracy. How we generate this reference internally? Do we have any mechanism to keep this reference stable even along with VCC voltage ripple? If this reference performance depends on power supply performance, do we have any guideline about what level of accuracy and voltage ripple spec we need for power supply?
- TMCS1101 datasheet demonstrate a maximum current it could measure (transient pulse current up to +/- 46A) I wondering to know what factor lead to such limitation? Is thermal consideration or magnetic saturation consideration? Customer want to figure it out its behavior during shortage or overcurrent condition.
- They used Allegro ACS7XX in the old design but it will be damaged during EFT test from time to time. Do we have qualification about EFT performance?