3 ms·
Faster slew rate for all switch supplies in the system. Nothing directly runs 48v.
by horacemorace 3y ago
Faster slew rate for all switch supplies in the system. Nothing directly runs 48v.
- klysm 3y agoI’m still skeptical. Why can’t it be filtered out
- yetihehe 3y agoIt can, it just requires up to a dollar more per device.
- ferongr 3y agoNothing "directly" runs on 12V either. All electronics will have stepdown converters in both the 12V and 48V use case. Motors, solenoids and incandescent bulbs can be made to work with either voltage (the same way we do for 24V systems in heavy goods vehicles here in Europe).
- hulitu 3y ago> Nothing "directly" runs on 12V either. Motors, bulbs, relays.
- bsder 3y agoNot true. Your motors and actuators operate directly on 48V (in fact, most actuators would prefer a higher voltage like 96V). That's really significant. Microelectronics is effectively a "don't care" since everything is behind a regulator or a PHY. Yeah, 48V tolerant switching regulators are going to be a bit more expensive until the volume gets rolling, but that problem solves itself while ethernet and CAN PHY chips are already 48V tolerant.
- jojobas 3y agoLights and motors can easily take 48V. It's only the digital devices that require switching supplies, and that's still much better that 200-300V rectified mains power.