Hacker News new | ask | show | jobs
by KaiserPro 932 days ago
if you're switching 48v, you'd want a mosfet rated for way more than 50v. On a car you'd want 200% headroom at least.
1 comments

With totally uncontrolled bus capacitance and inductance, sure.

But when you're using the same bus for Comms you need to have control of high frequency spikes, and low frequency spikes are easily handled by a bidirectional DC/DC. Therefore I could imagine peak to peak ripple on this bus to never exceed 1 volt.

> Therefore I could imagine peak to peak ripple on this bus to never exceed 1 volt.

https://www.quanterion.com/wp-content/uploads/2014/09/MIL-HD... disagrees.