Hi, do you think is feasible to use LTC4020 for a 24V/30A battery charger?
With careful consideration to PCB layout, it should be possible to build a 24V/30A battery charger based on the LTC4020. Here are some considerations:
Hi, thanks for replying and for the advice. Do you think that a 6 layer PCB will be sufficient? Also what about the switching frequency?
A 6-layer PCB should be sufficient, especially if you can get 71µm copper on all layers. Be sure to keep high-current paths short, and to estimate the resistive losses in the etch during layout.
I cannot give specific recommendations on the switching frequency, since I have not worked with the buck-boost power stage at these current levels. Obviously, the usual tradeoffs apply: higher switching frequency allows smaller inductor and capacitors in the circuit at the expense of greater switching losses in the FETs. I think 350kHz would be a good place to start.
Thanks again for your time
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