Abstract: This document discusses, among other things, apparatus and methods for an edge rate driver for a power converter switch. In an example, the driver can include an input node configured to receive a pulse width modulated signal, a first switch configured to couple a control node of the power converter switch to a supply voltage during a first state, a second switch configured to couple the control node of the power converter switch to a reference voltage during a second state, and a first current source configured to supply charge current to the first switch when the power converter switch transitions from the second state to the first state, the charge current configured to charge a parasitic capacitance of the power converter switch.

Abstract: The present disclosure describes full bridge power supply systems and control methods. In at least one embodiment, the full bridge power supply system may be driven utilizing a two-phase continuous conduction switching mode to control the inductor current. In another embodiment, the full bridge power supply system may be driven utilizing variably-configured three-phase continuous conduction modes to control the inductor current when an input voltage is within a window value to the output voltage. In another embodiment, the full bridge power supply may be driven using a four-phase discontinuous conduction switching mode to control the inductor current when a load current is below a current lower threshold.

Abstract: The present disclosure describes full bridge power supply systems and control methods. In at least one embodiment, the full bridge power supply system may be driven utilizing a two-phase continuous conduction switching mode to control the inductor current. In another embodiment, the full bridge power supply system may be driven utilizing variably-configured three-phase continuous conduction modes to control the inductor current when an input voltage is within a window value to the output voltage. In another embodiment, the full bridge power supply may be driven using a four-phase discontinuous conduction switching mode to control the inductor current when a load current is below a current lower threshold.

Abstract: This document discusses, among other things, apparatus and methods for providing audio transducer protection. In an example, an audio protection circuit can include a first comparator configured to compare peak power information of a drive signal of an amplifier of an audio system with a first threshold, a limiter circuit configured to limit an input of the amplifier if the peak power information of the drive signal exceeds the first threshold, and a second comparator configured to compare average power information of the drive signal with a second threshold and to provide an output signal configured to modulate a gain of a pre-amplifier of the audio system using the comparison.

Abstract: This document discusses, among other things, apparatus and methods for an edge rate driver for a power converter switch. In an example, the driver can include an input node configured to receive a pulse width modulated signal, a first switch configured to couple a control node of the power converter switch to a supply voltage during a first state, a second switch configured to couple the control node of the power converter switch to a reference voltage during a second state, and a first current source configured to supply charge current to the first switch when the power converter switch transitions from the second state to the first state, the charge current configured to charge a parasitic capacitance of the power converter switch.

Abstract: This document discusses, among other things, an apparatus, system, and method to limit a current overshoot in an electronic component using a switched feedback circuit to precondition a gate of a transistor coupled to the electronic component.

Abstract: This document discusses, among other things, apparatus and methods for an edge rate driver for a power converter switch. In an example, the driver can include an input node configured to receive a pulse width modulated signal, a first switch configured to couple a control node of the power converter switch to a supply voltage during a first state, a second switch configured to couple the control node of the power converter switch to a reference voltage during a second state, and a first current source configured to supply charge current to the first switch when the power converter switch transitions from the second state to the first state, the charge current configured to charge a parasitic capacitance of the power converter switch.

Abstract: This document discusses methods and apparatus for converting an input voltage level to an output voltage level that can be different from the input voltage level. In an example, a converter can include a first switch configured to couple an inductor to a load, a second switch configured to initiate current flow in the inductor, a third switch coupled to a current source, and a controller configured to couple the first switch to the third switch to form a current mirror, to conduct current between the inductor and the load using the first switch, and to control the conducted current using the current source when an output voltage is substantially less than the supply voltage.

Abstract: This document discusses, among other things, an apparatus, system, and method to limit a current overshoot in an electronic component using a switched feedback circuit to precondition a gate of a transistor coupled to the electronic component.

Abstract: Devices, systems and methods are provided for a switched-mode voltage converter system with energy recovery. The device may include a first voltage converter circuit including a boost voltage node and an output voltage port coupled to a load. The first voltage converter circuit configured to deliver energy from the boost voltage node to the load in a first mode, and to deliver energy from the load to the boost voltage node in a second mode. The device may also include a second voltage converter circuit coupled to an energy source and to the boost voltage node, the second voltage converter circuit configured to convert a first voltage associated with the energy source to a second voltage associated with the boost voltage node.

Abstract: This document discusses, among other things, a voltage regulator having a plurality of switching devices, coupled in parallel, and configured to selectively provide a variable available drive current using a comparison of a regulated Dc output voltage to at least one reference voltage.

Abstract: This document discusses, among other things, apparatus and methods for providing audio transducer protection. In an example, an audio protection circuit can include a first comparator configured to compare peak power information of a drive signal of an amplifier of an audio system with a first threshold, a limiter circuit configured to limit an input of the amplifier if the peak power information of the drive signal exceeds the first threshold, and a second comparator configured to compare average power information of the drive signal with a second threshold and to provide an output signal configured to modulate a gain of a pre-amplifier of the audio system using the comparison.

Abstract: This document discusses, among other things, apparatus and methods for an edge rate driver for a power converter switch. In an example, the driver can include an input node configured to receive a pulse width modulated signal, a first switch configured to couple a control node of the power converter switch to a supply voltage during a first state, a second switch configured to couple the control node of the power converter switch to a reference voltage during a second state, and a first current source configured to supply charge current to the first switch when the power converter switch transitions from the second state to the first state, the charge current configured to charge a parasitic capacitance of the power converter switch.

Abstract: This document discusses methods and apparatus for converting an input voltage level to an output voltage level that can be different from the input voltage level. In an example, a converter can include a first switch configured to couple an inductor to a load, a second switch configured to initiate current flow in the inductor, a third switch coupled to a current source, and a controller configured to couple the first switch to the third switch to form a current mirror, to conduct current between the inductor and the load using the first switch, and to control the conducted current using the current source when an output voltage is substantially less than the supply voltage.

Abstract: This document discusses, among other things, apparatus and methods for operating a voltage converter. In an example, a circuit for controlling a converter can include a comparator configured to receive an off-time charge voltage and an off-time threshold and to initiate a transition of a power transistor from an off-time state to an on-time state when the off-time charge voltage exceeds the off-time threshold, and a capacitor coupled to the comparator and configured to receive a voltage from an inductor in the off-time state and to provide the off-time charge voltage using the voltage from the inductor.

Abstract: This document discusses, among other things, a charge pump having a plurality of switching devices, coupled in parallel, and configured to selectively provide a variable available drive current for a capacitor using a comparison of an output voltage to at least one reference voltage.

Abstract: This document discusses, among other things, a voltage regulator having a plurality of switching devices, coupled in parallel, and configured to selectively provide a variable available drive current using a comparison of a regulated Dc output voltage to at least one reference voltage.

Abstract: This document discusses, among other things, a charge pump having a plurality of switching devices, coupled in parallel, and configured to selectively provide a variable available drive current for a capacitor using a comparison of an output voltage to at least one reference voltage.