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Electronics => Projects, Designs, and Technical Stuff => Topic started by: waulu13 on October 23, 2020, 09:08:49 am

Title: Review Layout with INA253 (current sensing)
Post by: waulu13 on October 23, 2020, 09:08:49 am

Hello,

I made a simple layout with three INA253 (U1, U2, U3) in parallel. In the beginning I will only solder one. Eventually I will add the second and the third if everything goes well. The datasheet of INA253,

https://www.ti.com/lit/ds/symlink/ina253.pdf?ts=1603359713113&ref_url=https%253A%252F%252Fwww.google.com%252F (https://www.ti.com/lit/ds/symlink/ina253.pdf?ts=1603359713113&ref_url=https%253A%252F%252Fwww.google.com%252F)

I will manufacture the PCB with 1oz and after that I will add solder over the tracks with high current. The conenctors I will use something like this,

https://pt.mouser.com/ProductDetail/TE-Connectivity/796949-3?qs=ItShc8fFPOsPQ5f70MLFFw%3D%3D (https://pt.mouser.com/ProductDetail/TE-Connectivity/796949-3?qs=ItShc8fFPOsPQ5f70MLFFw%3D%3D)

So with only one INA253 (10 A), are the layout and the connectors acceptable? Once I add the 2nd and the 3rd INA253 I will keep the tests with 15A maximum just to measure the results and test software. The decoupling capacitors C1, C2 and C3 are well positioned too?

Best regards,

EDIT: The ground is still not connected to the connector.