Cross-conduction prevention circuit for power amplifier output s

Details Cross-conduction prevention circuit for power amplifier output s Cross-conduction prevention circuit for power amplifier output s

1993-12-17

1996-01-02

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

327112, 327387, 327391, 327500, 327562, 327563, 330253, 330255, H03K 300, H03K 1716, G06G 712, H03F 345

Patent

active

054812135

ABSTRACT:
A structure for preventing simultaneous conduction in the power transistors of an output circuit of an audio system includes an auxiliary device in each of the high side control and low side control circuits controlling the power transistors. The auxiliary device in the high side control circuit is turned on simultaneously with the high side power transistor to provide a control signal to the low side control circuit, thereby turning off the low side power transistor. Conversely, the auxiliary device in the low side control circuit is turned on simultaneously with the low side power transistor to provide a control signal to the high side control circuit, thereby turning off the high side power transistor. Thus, simultaneous conduction in the high and low side power transistors is prevented.

REFERENCES:
patent: 4132954 (1970-01-01), Sidhu
patent: 4292478 (1982-09-01), Davis et al.
patent: 4963837 (1990-10-01), Dedic
patent: 4988954 (1991-01-01), Stern et al.
patent: 5266887 (1993-11-01), Smith
patent: 5341338 (1994-11-01), Hashiguchi et al.

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