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PMP8740: 4 kW AC-DC battery charger

Part Number: PMP8740

We have a requirement of <= 4 kW AC-DC battery charger. We found that the PMP8740 provides a reference design for 2 kW. We have the following queries.

1. Will it be possible to use two numbers of 2 kW reference design in parallel to meet 4 kW requirement? If that is possible, would it be possible to provide a support from TI?

2. If we want to redesign the 2 kW reference to 4 kW design using the TI reference files, will it be possible to do it with minor modification from the reference design? What kind of support we can get from TI?

3. If we have to use the reference design, what are the all the TI components or devices required in terms of hardware and software?

4. Would it possible to connect with the particular application engineer relevant for this product to take support during our product development?