MC56F83 DSC

[Rishab]

Hi,

I am using MC56F83789MLL DSC. I want to know what can happen if I don't use Vcap capacitors. Can the Controller supply go to CC mode because of this??

[xiangjun_rong]

Hi,

The total capacitor value on all VCAP pins for MC56F83xxx is 4.4uF. You have to connect the capacitors on the Vcap pins with total 4.4uF. If you do not connect the capacitors on the VCAP pins, the internal regulator output voltage is not stable, even can not power power.The capacitor is like a pool, saving charges, which provides power for the components like core, flash RAM...

Because this is a regulator mechanism rather than a DC/DC converter mechanism(switch mode power supply), there is not so-called CC(continuous current mode) mode.

Hope it can help you

BR

XiangJun Rong