Patent ID: 11936207
Assignee: CYPRESS SEMICONDUCTOR CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 18:
19. The power delivery system of claim 11, wherein to determine the Q-factor of the transmitting coil, the USB-PD IC controller is configured to calculate the Q-factor according to the following:, Q
   =
   
    
     π
     *
     N
    
    
     log
     ⁡
     (
     
      
       V
       1
      
      
       
        V
        2
       
        
      
     
     )
    
   
  
  ,
 

wherein Q is the Q-factor, N is the number of cycles of the decaying coil voltage signal, V1 is the reference signal of the first comparator, and V2 is the reference signal of the second comparator.