By Topic

Designing disk drive interconnects to obtain a desired transmitted write current waveform

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Jury, J.C. ; Dept. of Electr. Eng., Stanford Univ., CA, USA ; Batra, Sharat ; Wang, S.X.

This paper describes the application of nonuniform transmission lines as interconnects for disk drive applications. The design method that we use is a direct optimization, approximating the interconnect as a cascade of piecewise uniform transmission line segments. Models for the write head, interconnect, and write driver are provided. We find nonuniform interconnects are most effective for low-turn heads (<5 turns). We explore nonuniform interconnects as a way of inducing write current overshoot with short settling times (i.e., minimal ringing). For interconnects with total (one-way) propagation delay td, the effective overshoot duration ranges from 2td to 100 ps. The effective overshoot amplitude is <50%. The waveforms generated by nonuniform interconnects are limited primarily by the constraint on the interconnect length. Any additional mechanical constraints on specific regions of the interconnect may cause the design impedance profile to be compromised. If this is the case, multiple smaller constrained regions are preferred to a single large region.

Published in:

Magnetics, IEEE Transactions on  (Volume:38 ,  Issue: 1 )