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How to measure the PSRR of Class-D?

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yjiang

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The PSRR of Class-D

Hi,
Does anyone know how to measure the PSRR of Class-D and improve the PSRR?I hope that the experts can help me, thanks.
 

Re: The PSRR of Class-D

You can measure PSRR if you know what it means. It's very easy. Just inject some know noise in the power supply line. Curing the problem starts with identifying what part of the circuit can be the cause of a bad PSRR. At low freq. it's easy. At high freq. it can be difficult.


Regards
 

Re: The PSRR of Class-D

I am modeling the class-D,but I am not sure whether other ways could improve PSRR except increase the loop_gain of system.
 

Re: The PSRR of Class-D

What exactly are you modelling?
 

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