Other Parts Discussed in Thread: TPD4S009 , TCAN1042HG Hi,
I attach my PV ROOF CONTROLLER schematic,
and please check the peripheral settings of UCC2897.
the PWM is not operate normally at my end customer side.
It may something wrong, but I couldn…
You should have both of them connected to the Exposed Pad. Please review the EVM schematic and layout.
You cannot make wire connections from the bypass cap to ground plane. You would have to physically rotate the capacitor and have it connected to the…
Part Number: TMS320F28069 I'm looking for a inverter design and I saw a application report of inverter from TI. but there didn't have a design guide in this note. So would you help to share it? I have attach application report here for your reference…
Hello,
Quite often when the BOM looks alright and the design doesn't work for no apparent reason it is the layout of the board. The buck regulator has a noisy input side loop. This requires the input capacitors to share the same ground as the anode…
Your component placement on the layout is good. But please use copper pours for Vin, Vout and Gnd nodes. Sending power through vias can always be trouble some because you are adding parasitic inductance in the path. The parasitic inductance will cause…
Hello,
I took a look at your layout. There are a couple of changes that are required, which should help the situation. I am also attaching the presentation on layout techniques for SMPS designs to avoid EMI. Please refer that in the future.
1) For…
Gabriele,
I haven't seen your layout, but if you are seeing large ripple voltages at your output and if your output is not stable for no apparent BOM reason, then it could be the layout. Firstly, breadboarding an SMPS with thin traces/wires is not a…
Hello Ian,
While using an SMPS which is switching at a very high frequency, bread-boarding the design is not a good idea. Your layout, even though surface mounted, is not optimized. The SW node should be fat and wide and not long. But on your layout…
Hello Ben,
The BOM that Webench suggested should be correct. The thing with switch mode power supplies is that you cannot bread board them with long wire leads. Since they are switching at high frequencies, any additional lead length will add parasitics…
