H-bridge utilizing intermediate switching phase(s)

Details H-bridge utilizing intermediate switching phase(s) H-bridge utilizing intermediate switching phase(s)

2007-10-09

2007-10-09

Pascal, Robert (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including class d amplifier

C330S20700P

Reexamination Certificate

active

11261013

ABSTRACT:
An H-bridge circuit capable of performing switching using one or more intermediate voltage phases each held for a period of time in the midst of the switching operation. This reduces power dissipation associated with the switching operation, while only using one set of high/low voltage supplies. The H-bridge may be used to provide current via an inductor to a load. A class AB amplifier may be placed in parallel with the H-bridge to provide supplemental correcting current to the load to allow the combination to act as an efficient and accurate signal driver. Furthermore, the use of intermediate voltages in the H bridge allows for increased slew rates for any given operation frequency, and allows for the driving of a given signal on the load using a lower operational frequency.

REFERENCES:
patent: 5479134 (1995-12-01), Nishioka et al.
patent: 6097245 (2000-08-01), Dobbelaere et al.
patent: 6396933 (2002-05-01), Jung et al.
patent: 7190224 (2007-03-01), Sutardja
Class AB-D-G Line Driver for Central Office Asymmetric Digital Subscriber Line Systems Jaynie Shorb and David J. Allstot and Robert Roze 2002 IEEE V-405.
A Power-Efficient Audio Amplifier Combining Switching and Linear Techniques Ronan A. R. van der Zee and Ed (A.J.M. can Tuijl 1999 IEEE IEEE Journal of Solid State Circuits, vol. 34, No. 7, Jul. 1999.

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