Timeline for PCB Layout advice for high current buck converter
Current License: CC BY-SA 4.0
14 events
| when toggle format | what | by | license | comment | |
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| Feb 4, 2022 at 4:06 | comment | added | Brian Pepin | Very good! I really appreciate all the help. I've done a couple of revisions of both the board and schematic to further improve things. Schematic side I moved to smaller shielded inductors and doubled the switching frequency, added a snubber network on the input of the inductors, added capacitors as recommended in the comments and an additional low pass filter on the outputs. PCB side I changed the stackup to have both inner layers be ground and they are now unbroken throughout. I re-worked the IC / mosfet layout to fix the dancing you noticed and tightened things up considerably. | |
| Feb 2, 2022 at 3:32 | comment | added | DKNguyen | How did this turn out? | |
| May 12, 2020 at 12:00 | history | tweeted | twitter.com/StackElectronix/status/1260177943155945473 | ||
| May 12, 2020 at 3:33 | vote | accept | Brian Pepin | ||
| May 11, 2020 at 14:39 | comment | added | user19579 | @DKNguyen: got it. I am fine. | |
| May 11, 2020 at 13:02 | comment | added | DKNguyen | @user19579 Its just to link comments together in a chain. | |
| May 11, 2020 at 9:26 | comment | added | user19579 | @DKNguyen: I have just given comment, Not going to do myself. Are you asking me to do it, or Just addressing the comment on behalf of Brian Pepin,. | |
| May 11, 2020 at 8:26 | history | became hot network question | |||
| May 11, 2020 at 6:28 | comment | added | DKNguyen | @user19579 Yeah. Move the current sense resistors closer to the central Y-axis to free up space near the MOSFETs and place some large ceramic caps next to the MOSFETs smack dab across the rails. | |
| May 11, 2020 at 6:07 | comment | added | user19579 | You need high speed capacitors at the input of Q1 & Q3 which will bypass the switching currents for Q1,Q3. See C9,C11 & C17,C21 in EVB. Why before filtering with the output capacitors C11,C13,C15 you mounted LASER1. same case for other channel. | |
| May 11, 2020 at 4:29 | history | edited | Brian Pepin | CC BY-SA 4.0 |
deleted 1 character in body
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| May 11, 2020 at 2:46 | answer | added | DKNguyen | timeline score: 6 | |
| May 11, 2020 at 1:20 | comment | added | MadHatter | Looks fairly professional at this point... Lab testing will tell how you did. | |
| May 11, 2020 at 0:13 | history | asked | Brian Pepin | CC BY-SA 4.0 |