Tag
protection
3 articles.
- Reverse polarity protection: diode, MOSFET or ideal diode?
A Schottky costs 0.4 V and 4.65 W at 10 A; a P-channel MOSFET costs 35 mV but lets holdup capacitors drain backwards; an ideal-diode controller does neither.
- How much current melts a PCB trace
Onderdonk's equation, where it stops being true, how it compares against IPC's continuous rating, and why a resettable fuse can be slower than the copper.
- How to choose and place a TVS diode for ESD protection
Why a 5 V TVS hands the pin 10 V mid-strike, which datasheet numbers predict it, and the placement rules that stop loop inductance adding 40 V per nanohenry.