Yes, the TPS543A22 is same package as the TPS543B22. If the TPS543A22 must be tested, it can be substituted on the TPS543B22.
The only difference is the current limit settings between the TPS543A22 and TPS543B22. For the same BOM, the TPS543B22…
I submitted request for the TPS543A22 footprint to be added to the product folder on ti.com
In the meantime the TPS543B22 can be used, The TPS543B22 is p2p to TPS543A22 and has symbol and footprint
The drawing is from the TPS543B22 datasheet.
The datasheet does not explicitly state connect at the capacitor
for FB or GOSNS, but to the desired point of regulation which is the output voltage node.
We have found that If the sense trace is long a high…
We used the schematic of the TPS543B22 evaluation module. The PCB also has pads for the second stage filter on the circuit board to be populated. Here is the link for the user's guide which has the schematic: TPS543B22EVM .
First, 12V @ 45W is not going to provide the input power necessary to source 16x 4.3V @ 1A (68.8W) of output power, so your sourcing supply could be an issue. I would recommend a minimum of a 75W supply for powering 16x 4.3V @ 1A
Second, TI offer…
I would recommend the TPS543B22. It will release in December, the product folder is located here https://www.ti.com/product/TPS543B22
The input ripple requirement can be meet with additional capacitors or a ferrite bead on input.
The efficiency is greater…