System that needs PLL to provide a DC power supply

[protosszea]

Someone use PLL to supply a dc voltage, why not use the dc power suplly?

 

[benj29]

a question about PLL

Maybe i think, when a PLL is locked, the tension from filter to VCO is very stable. For example, with a fourth order filter, we have a variation near nV for ns.

 

[mpig09]

Re: a question about PLL

Dear benj29:

can you tell me which system need pll to provide a dc power supply ?

because system work, the current is not constant, so the voltage is not
stable!!!



mpig

 

[protosszea]

Re: a question about PLL

The dc power supply is more stable, isn't it ?

 

[hackjiang]

Re: a question about PLL

Good idea!

 

[benj29]

Re: a question about PLL

Dear benj29:

can you tell me which system need pll to provide a dc power supply ?

because system work, the current is not constant, so the voltage is not
stable!!!



mpig

Of course, DC block powers the PLL...

 

[adsl]

a question about PLL

Are you talking about PWM stuff?