公开(公告)号：US11657846B1

公开(公告)日：2023-05-23

申请号：US17710608

申请日：2022-03-31

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics, Inc.

Inventor： Enrico Mammei ,  Paolo Sanna ,  Dennis Hogg ,  Edoardo Contini

IPC: G11B20/10

CPC classification number: G11B20/10027

Abstract: A method to determine a relative delay between a current-overshoot signal and a write data signal for a hard disk drive preamplifier, the method including using a memory element to strobe a test current-overshoot signal with a test data signal; counting a number of strobed transitions of the test current-overshoot signal; adjusting the delay based on the number of strobed transitions; setting a phase difference between the current-overshoot signal and the write data signal according to the delay; and using the memory element to strobe the current-overshoot signal with the write data signal.