Patent
Self-clocking multiphase power supply controller
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TLDR
In this article, a ripple-mode controller provides reliable operation in multi-phase power supply circuits, over a variety of operating conditions, by adjusting the width of switching pulses the controller provides to one or more of the output phases based on detecting load current imbalance.Abstract:
A ripple-mode controller provides reliable operation in multi-phase power supply circuits, over a variety of operating conditions. Cross-phase blanking allows the controller to preserve the desired phase relationship between the switching pulses its provides to the different output phases, and permits the controller to operate each output phase at nearly 100% duty cycles. Active current sharing compliments blanking operations by adjusting the width of switching pulses the controller provides to one or more of the output phases based on detecting load current imbalances between the different output phases. With active current sharing, the controller prevents one or more output phases from carrying excessive portions of the load current. Further complimenting its operation, the controller may include virtual ripple generation to increase the noise immunity of its ripple-mode regulation.read more
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References
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Patent
DC to DC switching regulator with temperature compensated isolated feedback circuitry
TL;DR: In this article, a DC to DC switching regulator includes a first pulse width modulator (PWM) (26) and two switching transistors (48 and 50) that are coupled to a transformer (18) to generate an output signal that has pulse widths variable in response to the PWM (26).
Patent
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TL;DR: In this paper, a variable width pulse generator includes a pulse circuit responsive to a reset signal to provide the reset signal, and a variable delay reset loop path coupled to the pulse circuit is responsive to the signal.