This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS40303 - Can Vdd != Vin?

Other Parts Discussed in Thread: TPS40303, TPS56921


We would like to use the TPS40303 with Vin tied to a 3.3V rail, can we power Vdd with a dedicated 5.0V supply (e.g. REG711)?

My intent is to increase the BP voltage from approx. 3.3V to 5.0V and thus obtain higher power efficiency (lower MOSFET RDSon).

[High side MOSFET is the IRF7821/ Low side is the IRF7832.]

Thank you,