公开(公告)号：US09608645B2

公开(公告)日：2017-03-28

申请号：US14257796

申请日：2014-04-21

Applicant: INFINEON TECHNOLOGIES AG

Inventor： Chin Yeong Koh ,  Kar Ming Yong

IPC: H03L7/06 ,  H03L7/095 ,  H03L7/099 ,  H03L7/113 ,  H03L7/18

CPC classification number: H03L7/095 ,  H03L7/0995 ,  H03L7/113 ,  H03L7/18 ,  Y10S331/02

Abstract: In one implementation an output signal of an oscillator is varied to be within a desired frequency band with respect to a reference signal, the output signal having a plurality of phases. The implementation may include comparing the output signal with the reference signal, counting falling edges about each phase of the number of phases in a predetermined time period and summing to define a count output; comparing the count output with a product of the number of phases of the output signal and the factor to define a comparison, generating a control signal based upon the comparison, and inputting the control signal to the oscillator to alter the output signal thereof.