Tool/software:
Hello Team,
Could you please review the TPS25858-Q1 schematics, thanks any advice is greatly appreciated.
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Tool/software:
Hello Team,
Could you please review the TPS25858-Q1 schematics, thanks any advice is greatly appreciated.
Hi Jeison,
The TPS25858QRPQRQ1 shown in this schematic is different from the standard 25-pins package, could you check the reason utilizing this footprint?
BR,
Ke Wang
Hello Ken,
Thank you for you reply, I took the footprint from Mouser ECAD model on this link
Looking at the schematics the the VSET, ILIM, OUT, and BOOT pins are just duplicated on pins 26 -29 which map to 1, 9, 13 and 21 respectively. So I simply made them the same name.
Thank you,
Jeison
Hi Jeison,
As far as I know we don't have a 29 pin package for this product, and on Mouser's page it's also claimed to be VQFN-HR (25), so the ECAD model from Mouser could be wrong. I'll suggest following the pin map and footprint shown in the datasheet as a design reference.
BR,
Ke Wang
Hello Ke,
First apologies for writing your name incorrectly in my last reply.
Although the symbol shows 29 pins the actual footprint is only 25 pins. pin 1 is the same as 26, 9 is 27 and so on, so there is no issue with pin mapping, but thank you for pointing it out.
Hi Jeison,
Thanks for letting me know. Other parts look good to me. You may want add one more 0.1 uF cap for pin 11, and put it close to pin 11 when you do the layout. C5 can be placed near pin3 as you showed in the schematic.
BR,
Ke Wang
Thank you Ke,
I have a updated the schematics with your advise and will proceed.
Thank you,
Jeison