About this calculator for insulation... if i type in 300V, i get 2.5mm for external layers.
So.... how is it possible for Microchip to sell a 315V rated IC in a PQFP44 case? The pins on a QFP have 0.5mm pitch! Am Mittwoch, 6. April 2016 20:23:38 UTC+2 schrieb gregebert: > > Looks like you have enough bypass caps; just be sure to place them as > close as possible to the supply pins on the ICs. Good to see you have > separate clk & data lines to the HV5530's; you now have total flexibility > to avoid timing problems. > > Be sure to provide enough spacing around high-voltage signals on your PCB. > Here's a handy calculator: http://www.smps.us/pcbtracespacing.html > > The only suggestion is to add an ESD bleeding resistor of 1Meg (approx; > not critical) between your circuit GND and the actual power-line ground if > you have that connection in the case. You already have a resistive path > from your HV to GND which will discharge your HV cap. > > When I have multiple PC boards that are cabled together, I always have > ESD/bleed resistors between all power supplies and GND. Usually, the > largest & cheapest SMT resistor I can buy, which is 10meg, suffices for HV > supplies. > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/c7058008-b55c-41ce-865c-6d8a52d8d3e2%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
