LP5030: Response time of the driver

Hi Jagan,

I will check with our designer about this response time and reply to you tomorrow.

But based on the measurement on bench, the time should be less than 3 times of the PWM cycle.

Best regards,

Felix

Hi Felix,

Could you also check on the minimum time after which first I2C transaction can be made? (Assuming VCC voltage has settled and EN is made high)

Thanks,

Jagan

Hi Jagan,

Sure, I have sent the request to our designer and been waiting for the result. Once got it I will post here.

Best regards,

Felix

Hi Jagan,

The delay time range is 1~4 PMW cycles(34.5us ~ 137.9us) .

As for the time after which first I2C transaction can be made, there is tEN_H (as shown below) parameter with maximum value 500us. Not sure why you need the minimum value. In real application, the time between EN pulled high and start sending command should be larger than the maximum value.

Best regards,

Felix

Hi Felix,

Thanks for the clarification regarding tEN_H parameter.

Regarding the delay time, let us assume that I am sequentially writing the registers using I2C. Will the changes begin to take effect with in 137.9us after each corresponding register or does it happen together once I2C stop condition is encountered or does each change take a maximum of 137.9us individually?

Reagrds,

Jagan

Thanks for your help, Felix