3 ms·
> Finding parts to handle 12V or even 20V is pretty trivial, but at 48V you're going to have serious trouble sourcing it at a reasonable price. I don't buy thi
by bsder 3y ago
> Finding parts to handle 12V or even 20V is pretty trivial, but at 48V you're going to have serious trouble sourcing it at a reasonable price.
I don't buy this at all. 48V and 96V are standard telecom DC voltages. Those parts already exist.
If anything, this would be a big boon as it would enable using both telecom and consumer parts interchangably (thus increasing volume on both).
- pcdoodle 3y agoEven resistors have a rated voltage. 0402 for instance is about 25V.
- bsder 3y agoNah, you just have to size things correctly. Passives are fine. You use a 100K resistor if you really need to keep things at 0402 for 100V. (P=V^2/R = 0.1 watt) A 0.1uF 0402 ceramic cap rated at 100V is half a cent. The biggest problem are your power transistors with max Vgs. That requires a bit of care at 24V; requires quite a bit more care at 48V; requires very specialized topologies at 96V.
- pcdoodle 3y agoThanks, learned something new.