Hi experts,
I have questions about the time from when the current value is set until the actual set current is output? Could you please answer them?
[Question]
(1) Response time or reflection speed [A/sec] when current output changes by switching VREF with SPI register constant
(2) Response time or reflection speed [A/sec] when current output changes by setting SPI register with VREF constant
If there is a corresponding part in the data sheet, it would be greatly appreciated if you could tell me where to look.
[Background]
My customer wants to vary both the VREF and SPI register settings to achieve a variety of current outputs. For convenience of microcomputer control, they set the current in order as follows: VREF switching → SPI setting (or vice versa order)
If you switch in order like this, a maximum time lag of 3 ms will occur between these two operations due to the specifications of the microcomputer.
Depending on the VREF and SPI settings, it over/under shoot the target current when switching as the figure below shows. In the case of actual over/under shoot, they are investigating how much it will exceed in 3 ms. To clarify this point, they need your answer of above question.
Thank you for your help.
Best Regards,
Taito Takemrua
