topic Re: FS6500 - INTERNAL RESET CIRCUITRY in Power Management

FS6500 - INTERNAL RESET CIRCUITRY

AnneVilasini — Tue, 01 Dec 2020 04:31:30 GMT

Hi ,

My query is regarding the internal reset circuitry used in SBC FS6500.

1. What is the maximum reaction time Trr of the reset ?

2. What is the maximum voltage drop that can occur during Trr max ?(indicated by delta U in the picture)

3.What is the minimum threshold voltage Vrt, which triggers a reset from the reset circuitry? (indicated by Vrt min in the picture)

4. What is the minimum voltage Vdd, which ensures the ECU does not reset?

guoweisun — Tue, 01 Dec 2020 09:50:41 GMT

1. What is the maximum reaction time Trr of the reset ?

overvoltage is the maximum reaction time 83uS;

2. What is the maximum voltage drop that can occur during Trr max ?(indicated by delta U in the picture)

It depends on output capacitor and loads after regulators.

3.What is the minimum threshold voltage Vrt, which triggers a reset from the reset circuitry? (indicated by Vrt min in the picture)

If UV configured as RSTB impacted, it is min UV threshold that can be found in the datasheet

4. What is the minimum voltage Vdd, which ensures the ECU does not reset?

it corresponding to the max UV threshold that can be found in the datasheet.

AnneVilasini — Wed, 02 Dec 2020 06:44:59 GMT

Hi Guoweisen,

Thanks for your reply,

Could you also please let me know , how the maximum reaction time of reset is considered as 83us?