Write driver with improved boosting circuit and interconnect...

Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of the amplifier

Reexamination Certificate

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C360S046000, C360S067000

Reexamination Certificate

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07365928

ABSTRACT:
A write driver driving a write current through a head connected to the write head by an interconnect. The write driver includes a circuit matching output resistance to the odd characteristic impedance of the interconnect and a voltage boosting circuit. The voltage boosting circuit in connected between a high voltage reference or supply voltage and a low voltage reference, and includes a pair of current sources, such as MOS transistors, connected to the input node of a single capacitor. During the overshoot duration, the current sources selectively operate at saturation to generate a pulsed current with an amplitude of half the load current. The recharge of the capacitor is done with the load current.

REFERENCES:
patent: 5581455 (1996-12-01), Rossi et al.
patent: 5612828 (1997-03-01), Brannon et al.
patent: 5841603 (1998-11-01), Ramalho et al.
patent: 5914867 (1999-06-01), Pascucci
patent: 5952851 (1999-09-01), Yuen
patent: 6121800 (2000-09-01), Leighton et al.
patent: 6166869 (2000-12-01), Pidutti et al.
patent: 6204654 (2001-03-01), Miranda et al.
patent: 6236246 (2001-05-01), Leighton et al.
patent: 6236247 (2001-05-01), Ngo
patent: 6275347 (2001-08-01), Ngo et al.
patent: 6307695 (2001-10-01), Bhandari
patent: 6414553 (2002-07-01), Luo
patent: 6512645 (2003-01-01), Patti et al.
patent: 6512646 (2003-01-01), Leighton et al.
patent: 6532123 (2003-03-01), Veenstra et al.
patent: 6545514 (2003-04-01), Barrow
patent: 6671113 (2003-12-01), Klaassen et al.
patent: 6683487 (2004-01-01), Takeuchi et al.
patent: 6794880 (2004-09-01), Tucker
patent: 6831800 (2004-12-01), Ranmuthu
patent: 6879455 (2005-04-01), Ngo et al.
patent: 6885225 (2005-04-01), Ohmichi et al.
patent: 6917484 (2005-07-01), Ranmuthu
patent: 2002/0186578 (2002-12-01), Kim
patent: 2003/0081339 (2003-05-01), Barnett et al.
patent: 2003/0090828 (2003-05-01), Venca et al.
patent: 2003/0142432 (2003-07-01), Yoshizawa et al.
patent: 2003/0189447 (2003-10-01), Price
patent: 2003/0234996 (2003-12-01), Ngo
patent: 2004/0032684 (2004-02-01), Leighton et al.
patent: 2004/0196582 (2004-10-01), VanEaton et al.
patent: 2005/0174668 (2005-08-01), Fang et al.

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