Hi there,
We are using TPS61022 in our product now. I wonder if I can have a review of layout of TPS61022. Thanks.
It's difficulty to add vias on output ground. Not quite sure if it will effect a lot? Thanks.
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Hi Jing,
1.The placement of output capacitor is the most important thing for Boost converter, please place the output capacitors as much as close to VOUT / GND pin of IC. (as shown in the green square). Otherwise, there may be a risk of damage when operating at large load current.
2.About the vias, they are used to improve the thermal performance, if the IC is operating at large current for a long time, we recommend to add vias, otherwise the temperature may be very high, and hit thermal shutdown early.
Regards,
Nathan
Hi Jing,
We recommend to place the vias close to VOUT and GND pads, for better thermal performance. You can refer to this figure.
The other things are fine.
Regards,
Nathan
Hi Nathan,
Please check the updated layout. I've tried to add more vias. For ground side, I think it should be good. For Vout side, it difficulty to add vias.
By the way, in order to add the vias for Vout. I added an isolated copper foil on the bottom side. Will that effect anything? Thanks.
Best regards,
Jing
Hi Jing,
I think the isolated copper is connected to VOUT point, right? If that, it is no problem. The layout is fine.
Regards,
Nathan