Power amplifier with multiple switched output stages, and method

Details Power amplifier with multiple switched output stages, and method Power amplifier with multiple switched output stages, and method

1998-03-09

1999-09-07

Wong, Peter S.

Electric power conversion systems

Current conversion

Having plural converters for single conversion

363 58, 363 98, 363136, H02M 700, H02M 324, H02M 7521, H02H 7122

Patent

active

059496681

ABSTRACT:
In a method for the drive of a number of coupled output stages drive signals for the output stages are generated. Given an over-voltage condition in one of the output stages, the output stage affected by the over-voltage condition is switched into a charge output mode for a limited time duration and at least one other output stage is switched into a charge pick-up mode for a limited time. This method is utilized in the operation of a control module and of a power amplifier, and achieves a charge compensation or balancing or equalization between the output stages with very little circuit-oriented outlay.

REFERENCES:
patent: 4025859 (1977-05-01), Smith
patent: 5508905 (1996-04-01), Reichard
patent: 5523632 (1996-06-01), Seragnoll
patent: 5546299 (1996-08-01), Lenz
patent: 5631817 (1997-05-01), Minami
patent: 5768114 (1998-06-01), Gruning et al.

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