Dear support member,
My customer used TPS22990.
I have a question.
(Question1)
What is the reason why the pad (red) is larger than the resist (green) for the (middle) part?
(Question2)
The shape of the resist (green) is only at the output pin.
What is the reason different from other pins?
Best regard.
Bob Lee.
Hi Bob,
For some of our pads that are larger or have uncommn shapes (VOUT and GND pads) we define the metal that needs to be exposed to solder the pin down to the metal layer. this is shown with the green traces surrounded by the red dotted lines (metal exposed under the solder mask).
For normal pins, we usually show the metal that needs to be exposed for each pin, surrounded by the solder mask opening to make sure the metal doesn't contact the other pins (red trace surrounded by green trace).
In short, this saves manufacturing cost/time for routing and creating the etches for the TPS22990.
Thanks,
Arthur Huang
To find the latest information on Power Switches, visit www.ti.com/powerswitch
Please click "This resolved my issue" button if this post answers your question.
