Tool/software:
Hi team,
Can you help to confirm what's the impact if VCC be powered internally, that is, VCCX connected to AGND?
BRs,
Rannie
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Tool/software:
Hi team,
Can you help to confirm what's the impact if VCC be powered internally, that is, VCCX connected to AGND?
BRs,
Rannie
Hi Rannie,
If VCCX is not powered, then the VCC bias rail is provided by the internal VCC subregulator. The power dissipation in the IC is Vin*Ivcc, where Ivcc is mainly the current to drive the FETs, which is Qg*Fsw for each FET.
Regards,
Tim