Timeline for Open-loop Buck LED dimming
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Jun 11, 2020 at 15:10 | history | edited | CommunityBot |
Commonmark migration
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| Dec 27, 2018 at 16:36 | comment | added | bobflux | Yeah, wires plus 2m of LED strips which would make nice antenna. I'll use high side drive, ground the strips and link PCB ground to the aluminium extrusion which carries the LEDs and the pcb, so it'll act as a ground plane. | |
| Dec 27, 2018 at 12:48 | comment | added | vini_i | @peufeu Yes, it's worth it. I assume that the wires involved here are longer than a few inches. With the low side MOSFET the entire assembly will become a giant radiating antenna. With the high side MOSFET will keep the switching noise behind the LC filter. | |
| Dec 26, 2018 at 21:22 | comment | added | bobflux | "move the MOSFET to the input" : ok, this needs a high side driver, will look into these. Are you sure it's worth it vs solid decoupling to tie VCC to GND? | |
| Dec 26, 2018 at 21:19 | comment | added | bobflux | "make sure that the inductor is capable of delivering the continuous current if the MOSFET is on all the time" : sure, being on all the time is the max power setting which will be used, so I selected an inductor which allows this. | |
| Dec 26, 2018 at 19:10 | history | answered | vini_i | CC BY-SA 4.0 |