The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 23, 2001
Filed:
Mar. 31, 1999
Applicant:
Inventors:
Mehrdad Nayebi, Palo Alto, CA (US);
Murat Hayri Eskiyerli, San Jose, CA (US);
Phil Shapiro, Palo Alto, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 1/704 ; H03K 1/760 ;
U.S. Cl.
CPC ...
H03K 1/704 ; H03K 1/760 ;
Abstract
A fast high side switch for hard disk drive preamplifiers requires very fast turn on time, very low impedance when the switch is “on” and very high impedance when the switch is turned “off”. Each of the embodiments described provide a low-impedance path between the “Boost Voltage” and “Switch Out” terminals of the hard disk drive preamplifier, i.e., connecting a boost-voltage to the inductor, and as required in such a system, the proposed circuits provide a turn-on time that is much faster than the rise-time of the write current.