Patent Number: 6,294,954

Title: Adaptive dead time control for switching circuits

Abstract: Apparatus for adaptively reducing dead time in a switching circuit includes overlap detection circuitry for measuring the dead time/overlap of the switches, and control circuitry for setting the dead time to the optimum level (generally the minimum possible dead time without any overlap occurring). The dead time/overlap may be detected by measuring the current through the switches, the current into the power supply, the voltage waveform at the switch point, or the average voltage waveform at the switch point. The dead time may be controlled by utilizing delay elements prior to the drivers, or by utilizing circuitry to control the driver timing.

Inventors: Melanson; John Laurence (Boulder, CO)

Assignee: AudioLogic, Incorporated

International Classification: H03K 5/15 (20060101); H03K 19/0185 (20060101); H03F 3/20 (20060101); H03K 19/00 (20060101); H03F 3/217 (20060101); H03F 1/32 (20060101); H03K 5/151 (20060101); H03F 003/38 ()

Expiration Date: 09/25/2018