Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Rectangular or pulse waveform width control
Patent
1996-10-30
1999-08-10
Tran, Toan
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Rectangular or pulse waveform width control
327177, 327108, 327538, H03K 3017, G05F 110
Patent
active
059364467
ABSTRACT:
Pulse width modulation driver circuitry both limits and regulates the voltage that is applied to a load from a power source which provides a voltage that may far exceed the maximum safe load voltage. The driver circuitry includes a reactive filter coupled to the load, a voltage sensor for sensing the instantaneous voltage across the load, a timer, and a comparator. The reactive filter alternately takes in energy from the power source and discharges it into the load. The voltage sensor, timer, and comparator cooperate with a switch to modulate the application of power to the load and to the reactive filter in response to the instantaneous magnitudes of the load voltage and the power source voltage.
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U.S. application No. 08/674,073, filed on Jul. 1, 1996.
SwitcherCAD User's Manual, 1992, pp. 5-9 to 5-11.
L.H. Dixon, Jr., "Switching Power Supply Topology Review", Unitrode Switching Regulated Power Supply Design Seminar Manual, 1994, pp. P1-1 to P1-3.
Kraus Robert J.
Philips Electronics North America Corporation
Tran Toan
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