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TPS2413 & TPS2411 questions

For both TPS2413D and TPS2411D, there are VDD UVLO. What are the response time for these VDD UVLOs?

I mean, when the device is getting VDD UVLO, I think, its “GATE” will be turn off. From the VDD UVLO to GATE turned off, what is the response time?

  • The Vdd UVLO is monitored by an internal comparator.  Its response time is in the realm of 5us or less with some minimum overdrive.  The gate turnoff is then controlled by the external capacitive loading and the pulldowns.  When the UVLO fires, several pulldowns are activated in parallel.  The "Sustain turn-off" (see datasheet), that is powered from the internal power rail via Vdd, and a secondary turnoff circuit that scavenges power from A or C to run.  The current for this additional pulldown is not specified, but we would expect it to be in the mA ranges, limited by the Rdson of the pulldown device.