Quote:
Originally Posted by Mike Copioli
The brown out on the Jag is around 4.8 volts based on the TPS54040 datasheet. The Jag uses a 5 volt buck in series with a 3.3 v regulator. This is the rated lockout for that regulator, most likely it is above 5 volts. Also the CAN controller and RS232 convertor both operate on 5V volts not 3.3v.
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Thanks you just saved me some time.
I've been looking at various ways to put a little extra capacitance on the 5V and 3.3V sides to increase the noise rejection.
I thought I saw this in the Jaguar schematic before, but I haven't had time to look.