Method to increase head voltage swing and to reduce the rise...

Details Method to increase head voltage swing and to reduce the rise... Method to increase head voltage swing and to reduce the rise...

2005-04-12

2005-04-12

Tran, Sinh (Department: 2651)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of the amplifier

C360S046000, C360S067000

Reexamination Certificate

active

06879455

ABSTRACT:
A voltage-mode boosting write driver circuit (40) having a pair of voltage boosting PMOS transistor sets (44, 46) coupled to a high current H-switch (42). One set (44) of the boosting PMOS transistors correspondingly pulls output pin HY high, while the other transistor set (46) correspondingly pulls output pin HX high and the other output pin HY low thereby significantly improving the head voltage swing, and also achieving a faster slew rate. Moreover, resistors (R3, R4) of the H-switch are both matched to each other and impedance matched to a flex cable (T0) interconnection impedance, which interconnection is coupled to the thin film head, to thereby eliminate signal reflection such that the write current (Iw) settles quickly with minimum ringing to achieve a high data rate. Moreover, less power dissipation and smaller number of devices used are achieved by making use of existing transient currents of the pre-driver emitter follower stage.

REFERENCES:
patent: 5757215 (1998-05-01), Schuelke et al.
patent: 6121800 (2000-09-01), Leighton et al.
patent: 6166869 (2000-12-01), Pidutti et al.
patent: 6175463 (2001-01-01), Nayebi et al.

Affiliated with

Also associated with

Rating

Method to increase head voltage swing and to reduce the rise... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method to increase head voltage swing and to reduce the rise..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method to increase head voltage swing and to reduce the rise... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3373820