Abstract: A voltage generation circuit includes an operation voltage driving circuit configured to drive an operation voltage based on a calibration voltage and a feedback voltage and generate the feedback voltage from the operation voltage. The voltage generation circuit also includes a reference voltage calibration circuit configured to generate the calibration reference voltage, wherein the calibration reference voltage varies based on a set value calculated according to the feedback voltage and a reference voltage.

Abstract: The present description concerns an electronic device including: a modulator-demodulator circuit; a first integrated circuit implementing a first subscriber identification module; and at least one second integrated circuit intended to implement a second subscriber identification module, wherein a sequencing terminal of the first circuit and a sequencing terminal of the second circuit are connected to a same sequencing terminal of the modulator-demodulator circuit.

Abstract: An inductive charging circuit coupled to a winding of a power converter and a supply terminal of a controller of the power converter. The inductive charging circuit comprising an input coupled to the winding, the input coupled to receive a switching voltage generated by the power converter, an inductor coupled to the input to provide an inductor current in response to the switching voltage, a first diode coupled to the inductor to enable the inductor current to flow from the input of the inductive charging circuit to an output of the inductive charging circuit; and the output of the inductive charging circuit coupled to the supply terminal of the controller, the output of the inductive charging circuit configured to provide an operational current responsive to the switching voltage, the controller is configured to control a power switch of the power converter to generate the switching voltage.

Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for providing overvoltage protection for circuitry coupled to connector ports, such as USB-C ports. One example circuit for overvoltage protection between a connector port and a signal node corresponding to the connector port generally includes a first switch having a first terminal for coupling to the connector port and having a second terminal for coupling to the signal node; a first resistive element coupled in parallel with the first switch; a first transient protection circuit coupled between the signal node and a reference potential node; and a control circuit having an input coupled to the signal node and having a first output coupled to a control input of the first switch.

Abstract: A circuit may be configured detect current in different phases of an N-phase power converter. The circuit may comprise a first set of elements defining at least part of a first current loop associated with a first phase of the power converter, wherein the first set of elements is configured to detect current during the first phase of the power converter. In addition, the circuit may comprise a second set of elements defining at least part of a second current loop associated with a second phase of the power converter, wherein the second set of elements is configured to detect current during the second phase of the power converter when a duty cycle associated with the different phases is greater than 100/N, and wherein the first set of elements is configured to detect current during the second phase of the power converter when the duty cycle is less than 100/N.

Abstract: Pulse width modulation (PWM) controllers for hybrid converters are provided herein. In certain embodiments, a PWM controller for a hybrid converter includes a threshold generation circuit for generating a threshold signal based on an output voltage of the hybrid converter, a threshold adjustment circuit for generating an adjusted threshold signal based on sensing a voltage of a flying capacitor of the hybrid converter, and a comparator that generates a comparison signal based on comparing the adjusted threshold signal to an indication of an inductor current of the hybrid converter. The output of the comparator is used for generating PWM control signals used for turning on and off the switches (for instance, power transistors) of the hybrid converter.

Abstract: A voltage regulator includes a main driving stage circuit, a first pre-driving circuit, a plurality of auxiliary driving stage circuits, a second pre-driving circuit, and a comparison and decoding circuit. The main driving stage circuit provides a main driving current of an output voltage according to a first control signal. Each of the auxiliary driving stage circuits determines whether to provide an auxiliary driving current of the output voltage according to a second control signal. The second pre-driving circuit generates the second control signal according to an enable signal. The comparison and decoding circuit generates a simulated driving current and generates a load current according to a reference current and a counting code, compares the simulated driving current with the load current to generate a comparison result, and generates the enable signal by decoding the comparison result. The counting code is generated according to the comparison result.

Abstract: This application relates to method and apparatus for driving acoustic transducers, such as speakers or haptic transducers. A transducer driver circuit (200) has a hysteretic comparator (201) configured to compare, with hysteresis, an input signal (SIN) received at a first comparator input to a feedback signal (SFB) received at a second comparator input. Based on the comparison the hysteretic comparator (201) generates a pulse-width modulation (PWM) signal (SPWM) at a comparator output (206). An inductor (203) is coupled between the comparator output and an output node (204). In use a resistive component (208), which may comprise the transducer (301) is coupled to output node (204). The inductor (203) and resistive component (208) provide filtering to the PWM signal (SPWM). A feedback path extends between the output node (204) and the second comparator input to provide the feedback signal (SFB).

Abstract: Operating DC to DC power converters. At least some of the example embodiments are methods including: driving current through an inductance in a first on cycle of the power converter; comparing, by a comparator, a signal indicative of current through the inductance coupled to a first input of the comparator to a threshold applied to a second input of the comparator, and asserting a comparator output responsive to the signal indicative of current meeting the threshold; sampling a differential voltage across the first and second inputs, the sampling responsive to assertion of a comparator output, and the differential voltage indicative of propagation delay through the comparator; and compensating the comparator in a second on cycle for the compensation delay based on the differential voltage, the second on cycle subsequent to the first on cycle.

Abstract: According to certain aspects, the present embodiments are directed to techniques for providing the ability to monitor one or more operational parameters of a voltage regulator. In embodiments, the voltage regulator is a multiphase voltage regulator having a plurality of power stages corresponding to each respective phase. In these and other embodiments, the operational parameters include one or both of a phase current and a phase temperature. According to certain additional aspects, the present embodiments provide the ability to monitor the respective phase current output and phase temperature of each phase independently. According to further aspects, this ability to monitor the operational parameters is achieved while minimizing circuit complexity.

Abstract: An output terminal of one phase switched capacitor converter is connected to a first output terminal, and an output terminal of the other phase switched capacitor converter is connected to the first output terminal via a second switch, such that the power conversion structure can operate in a mode of two phase switched-capacitor converters in parallel, and a current formed by the operating of only one phase switched capacitor converter flows through the second switch, thus greatly reducing a value of current flowing through the second switch, greatly reducing the on-state loss of the second switch, and improving the efficiency of the power conversion structure, and because the second switch has lower on-state loss and less heat, there is a larger selectivity of the second switch and a reduction of the cost of power conversion structure.

Abstract: A switching control circuit that controls switching of a switching device, the switching control circuit includes a frequency modulation circuit that generates an oscillator signal, and modulates a frequency of an oscillator signal with a predetermined frequency and a modulation index of two or more, and a drive circuit that drives the switching device in response to a signal corresponding to the modulated oscillator signal, the predetermined frequency being higher than a frequency indicative of a value that is a quarter of a half width of a bandpass filter used for measuring noise generated when the switching device is driven.

Abstract: An apparatus includes a current emulator and a controller. The emulator receives a reference output current value representing a measured average amount of output current delivered by the voltage converter to the load for a first portion of a power delivery cycle during which high side switch circuitry and low side switch circuitry in the voltage converter are activated at different times to produce the output current. The power delivery cycle includes a second portion during which the high side switch circuitry and the low side switch circuitry of the voltage converter are deactivated. Via trial and error, the emulator derives an average output current value delivered to the load for the power delivery cycle based on the reference output current value and repeated adjustments to the estimation of the average output current. The controller controls operation of the voltage converter based on the derived average output current value.

Abstract: A circuit comprising: a first switch having: a first side connected to a first node; and a second side connected to a second capacitor's first side (2C1S); a second switch having: a first side connected to a second capacitor's second side (2C2S); and a second side connected to a first capacitor's first side (1C1S); a third switch having: a first side connected to a first capacitor's second side (1C2S); and a second side connected to a second node (2VN); a fourth switch having: a first side connected to 2C2S; and a second side connected to a third node (3VN); a fifth switch having: a first side connected to 2C1S; and a second side connected to 1C1S; a sixth switch having: a first side connected to 1C2S; and a second side connected to 3VN; a seventh switch having: a first side connected to 1C1S; and a second side connected to 2VN.

Abstract: Various embodiments provide a magnetic sensing scheme for a voltage regulator circuit. The voltage regulator circuit may include a first inductor (also referred to as an output inductor) coupled between a drive circuit and an output node. The voltage regulator circuit may further include a second inductor (also referred to as a sense inductor) having a first terminal coupled to the first inductor at a tap point between terminals of the first inductor. The second inductor may provide a sense voltage at a second terminal of the second inductor. A control circuit may control a state of the voltage regulator circuit based on the sense voltage to provide a regulated output voltage at the output node. Other embodiments may be described and claimed.

Abstract: A semiconductor device includes a MOSFET including a PN junction diode. A unipolar device is connected in parallel to the MOSFET and has two terminals. A first wire connects the PN junction diode to one of the two terminals of the unipolar device. A second wire connects the one of the two terminals of the unipolar device to an output line, so that the output line is connected to the MOSFET and the unipolar device via the first wire and the second wire. In one embodiment the connection of the first wire to the diode is with its anode, and in another the connection is with the cathode.

Abstract: A digital PWM modulator modulates a digital input signal to drive a PWM signal to a PWM DAC susceptible to introducing inter-symbol interference (ISI) in small PWM edge separation presence causing audio THDN degradation. A multi-bit quantizer switches from a first to second mode when the input signal rises above a threshold. The quantizer quantizes the input signal into a quantized output signal, each sample of which has a code selected from respective first and second quantization code sets. The second set, relative to the first set, causes the digital PWM signal to have increased edge separation to reduce the ISI at high input levels. The first set includes small magnitude codes relative to the second set to reduce quantization noise at low input levels. The threshold is sufficiently low to cause the quantized output signal to be dominated by small codes when operating in the first mode.

Abstract: A power supply system comprises: a switched-capacitor converter, a monitor, and a controller. The switched-capacitor converter includes an input node to receive an input voltage and an output voltage to output an output voltage. Switching of multiple switches in the switched-capacitor converter converts the input voltage into the output voltage. As its name suggests, the monitor monitors a magnitude of the output voltage. The controller receives input indicating the magnitude of the output voltage. Depending on the magnitude of the output voltage, the controller controls states of the multiple switches during startup of the switched-capacitor converter.

Abstract: The present disclosure provides methods and circuits of multi-output hybrid voltage regulators that generate multiple lower level DC voltages lower than the magnitude of an input voltage provided to an input node of the regulator. The disclosed methods and circuits can be applied to today's Large conversion ratio DC-DC converters that allow them to support same power conversion functionality for multiple output voltages with one core switched capacitor network sharing passive components and switches with less voltage ratings, and therefore, reduce the implementation space to save cost as well as improve efficiency. Sample applications include, but are not limited to, PoL converters for data centers and telecommunication systems with better efficiency and compactness for higher conversion ratio.

Abstract: A coil component includes: a body including a magnetic material, coil pattern layers disposed in the magnetic material, a core portion surrounded by the coil pattern layers, and an insulating layer disposed in the core portion and between adjacent coil pattern layers among the coil pattern layers, wherein each of the coil pattern layers comprises a spiral-shaped pattern; and an external electrode disposed on the body.

Abstract: Voltage regulator circuits and methods therefor provided. In some embodiments, a voltage regulator circuit comprises: a first switch coupled to a power input; a second switch coupled to the first switch; a switching node between the first switch and the second switch; an inductor coupled between the switching node and an output node; a capacitor coupled between the output node and ground; a driver configured to operate the first and second switches according to a pulse-width-modulated (PWM) signal; a PWM circuit configured to generate the PWM signal based on at least an error signal; and a phase detector configured to generate the error signal based on a phase difference between the PWM signal and a clock reference signal.

Abstract: A regulator includes an error amplification module, a first switch module, an adaptive conduction module, a second switch module and a feedback module. A first voltage difference between the second terminal and the third terminal of the first switch module is adjusted by the first switch module. The adaptive conduction module is used to adjust a second voltage difference between the second terminal and the third terminal of the second switch module. When the load current is less than a preset current threshold, the control voltage signal controls the first switch module to turn on, and the adaptive conduction module controls the second switch module to turn off. When the load current is greater than or equal to the preset current threshold, the control voltage signal controls the first switch module to turn on and controls the second switch module to be turned on through the adaptive conduction module.

Abstract: Disclosed is an interleaved buck-boost converter. The interleaved buck-boost converter includes a master switching stage and a slave switching stage that are controlled by a pulse-width-modulation (PWM) controller.

Abstract: The technology described in this document can be embodied in an apparatus that includes an amplifier that includes a first Zeta converter connected to a power supply and a load. The amplifier also includes a second Zeta converter connected to the power supply and the load. The second Zeta converter is driven by a complementary duty cycle relative to the first Zeta converter. The amplifier also includes a controller to provide an audio signal to the first Zeta converter and the second Zeta converter for delivery to the load.

Abstract: This document discloses a comparator that is configured to control dead-time between two or more switching transistors. In particular, it is disclosed that the comparator is configured to generate a suitable delay between the switching “OFF” of a transistor and the switching “ON” of another transistor so that the amount of shoot through current flowing between these two transistors are greatly minimized.

Abstract: This application provides a flying capacitor charging method and apparatus, applied to a multi-level topology circuit, to provide a flying capacitor charging solution with a small occupation area and strong applicability. The circuit is connected to an input power source by using a first switch, and is connected to an output power source by using a second switch. A first end of a first capacitor in flying capacitors in the circuit is connected to a first electrode of a first semiconductor switch transistor, a second end of the first capacitor in the flying capacitors in the circuit is connected to a second electrode of a second semiconductor switch transistor, and a second electrode of the first semiconductor switch transistor is connected to a first electrode of the second semiconductor switch transistor by using a second capacitor. The second capacitor is an input capacitor, an output capacitor, or another flying capacitor.

Abstract: A controller is disclosed for a voltage regulator module including a power unit and providing an output current, Iout, at an output voltage, Vout, from an input current/voltage and being configured for use in a multi-module voltage regulator having a neighbouring voltage regulator module having a respective output connected in parallel, the controller comprising: a reference voltage source for providing a reference voltage; a current balancing unit, configured to receive a respective output current from the or each neighbouring voltage regulator module and to determine an adjusted reference voltage, from the reference voltage and for balancing the output current with the at least one respective output current; and a control unit configured to use the adjusted reference voltage to control the voltage regulator module, to provide the output current at the output voltage from the input current at the input voltage, based on adaptive voltage positioning regulation.

Abstract: An apparatus includes a control circuit and a voltage regulator circuit coupled to a regulated power supply node. The voltage regulator circuit is configured to generate a power signal on the regulated power supply node using a reference voltage level. The apparatus further includes a control circuit that is configured to determine an operating mode using results of a comparison of a threshold value and a load current being drawn from the regulated power supply node by a load circuit. The control circuit may be further configured to set, in a first operating mode, the reference voltage level independently of the load current, and set, in a second operating mode, the reference voltage level using the load current.

Abstract: A system includes an input voltage node configured to provide an input voltage. The system also includes a load and a switching converter coupled between the input voltage node and the load. The switching converter is configured to provide an output voltage to the load based on the input voltage. The switching converter includes gate driver circuitry and a comparator coupled to the gate driver circuitry. The switching converter also includes a constant ripple injection circuit coupled to the comparator. The constant ripple injection circuit is configured to provide a positive current sense signal and a negative current sense signal to the comparator based on the input voltage and the output voltage.

Abstract: A magnetic structure in a power converter includes at least two multilayer boards, such as a primary board containing the primary windings and some auxiliary windings, and a secondary board containing the secondary windings and some auxiliary windings. The primary and secondary boards are on top of each other. On the layer on the primary bard adjacent to the secondary board, is a dual function shield to reduce the total common mode noise in the converter towards zero. The controlled dual function shield can be placed on the secondary board on the layer adjacent to the primary board, and in some embodiments can be placed on both primary and secondary board on the layers adjacent to the other board. The embodiments herein offer a very good solution for cost reduction of the planar transformers and offers an avenue for total elimination of the common mode noise in a power converter.

Abstract: A circuit includes a current path and a negative bootstrap circuitry coupled to the current path. The current path is coupled between a floating voltage and a reference ground, and includes a current generator coupled through a resistor to the floating voltage at a first node of the current generator. The current generator is controlled by a pulse signal. The negative bootstrap circuitry includes a pump capacitor coupled to a second node of the current generator and to the reference ground. The pump capacitor is configured to provide a negative voltage at the second node of the current generator based on the pulse signal.

Abstract: A voltage regulator can include: an input port with two terminals, and being configured to receive an input voltage; an output port with two terminals, and being configured to generate an output voltage, where the input port and the output port have a common ground potential; a group of input switches coupled in series between the two terminals of the input port, where a common node of every two adjacent input switches that form an input half-bridge topology is taken as an input switch node; at least one output half-bridge topology coupled between two terminals of the output port, where a common node of a high-side output switch and a low-side output switch in each output half-bridge topology is taken as an output switch node; and N storage capacitors, where each of the storage capacitors is coupled between one input switch node and one output switch node.

Abstract: A digital regulator system is provided. The digital regulator system includes a digital regulator circuit and a compensation circuit. The digital regulator circuit outputs an output current and an output voltage. The digital regulator circuit adjust the output current by decreasing or increasing a unit current according to at least a reference voltage and a feedback voltage. The compensation circuit receives the output voltage as well as decreases or increases a unit voltage of the output voltage to generate and output the feedback voltage according to the variation of the output current.

Abstract: A method may include, in a management controller of an information handling system including a power system configured to provide electrical energy to information handling resources of the information handling system, the power system having a direct-current input power source, a rechargeable energy storage device coupled to and rechargeable from the direct-current input power source, and a charger configured to control recharging of the rechargeable energy storage device from the direct-current input power source: retrieving parameters from one or more registers associated with the rechargeable energy storage device, the parameters including a desired voltage across terminals of the rechargeable energy storage device and a desired current for recharging the rechargeable energy storage device during a constant current mode of a charging cycle of the rechargeable energy storage device and communicating the parameters to the charger such that the charger controls recharging of the rechargeable energy storage de

Abstract: A power circuit is disclosed. The power circuit includes an input node, a plurality of inductors each connected to an output node, a plurality of phases each configured to provide current to one of the inductors, and a control circuit configured to trigger the phases. The phases are configured to provide current to one of the inductors in response to being triggered by the control circuit, the control circuit is configured to determine a variable time difference between a first phase being triggered and a second phase being triggered, and the time difference is based at least in part on a voltage difference between an input voltage at the input node and an output voltage at the output node.

Abstract: Certain aspects of the present disclosure provide a power supply circuit. The power supply circuit generally includes: a switched-mode power supply (SMPS) having an inductive element and a first switch coupled to the inductive element; a feedback path coupled between an output of the SMPS and a control input of the first switch; and a current limit circuit comprising a first capacitive element, a charge circuit coupled to the first capacitive element, a first current source, a first resistive element coupled to the first current source, the capacitive element being coupled to a node between the resistive element and the first current source, a sample-and-hold circuit coupled to the first capacitive element, and a clamp circuit coupled between the sample-and-hold circuit and the feedback path.

Abstract: A frequency limit circuit includes a frequency-voltage converter, a compensation voltage generator and a compensator. The frequency-voltage converter generates a conversion voltage proportional to an operation frequency of the DC-DC converter based on a pulse-frequency modulation (PFM) voltage control signal indicating the operation frequency. The compensation voltage generator generates a compensation voltage based on a difference between the conversion voltage and a frequency limit voltage. The compensator adjusts a compensation current at an output node of the DC-DC converter based on the compensation voltage to restrict the operation frequency. The operation frequency of the DC-DC converter may be restricted efficiently by adjusting the compensation current through the negative feedback operation.

Abstract: An integrated circuit including an autosleep circuit and a voltage regulator. The autosleep circuit includes a latch, a voltage detection circuit outputting a signal to a set input of the latch responsive to a voltage at its input exceeding a threshold voltage, and a delay timer outputting a signal to a reset input of the latch responsive to inactivity at one or more input terminals. A voltage regulator is configured to generate a voltage for biasing a subsystem such as digital logic, and is also the input voltage to the voltage detection circuit. The voltage regulator includes a plurality of transistors in parallel, one gated by the output of the latch and each of the others gated by one of the one or more input terminals. The voltage regulator includes an output leg that generates the output voltage responsive to one of the parallel transistors being turned on.

Abstract: An LED driving device includes a DC/DC controller which controls an output stage for supplying an output voltage to an LED; and a current driver which generates an output current of the LED. The current driver performs PWM dimming by turning on the output current in accordance with an LED-current-on period of a PWM dimming signal and turning off the output current in accordance with an LED-current-off period of the PWM dimming signal. The DC/DC controller includes a feedback control unit which performs feedback control for outputting a switching pulse to the output stage so as to make a cathode voltage of the LED equal to a reference voltage. A pulse addition control unit performs pulse addition control for adding a predetermined pulse number of additional switching pulses at a time of switching between the LED-current-on period and the LED-current-off period.

Abstract: A semiconductor device includes a voltage comparison circuit and a calibration control circuit. The voltage comparison circuit compares test reference voltages and generates a comparison result signal. The calibration control circuit controls an offset value of the voltage comparison circuit.

Abstract: A power converter includes a switch, an ON-time controller, and a compensator. Over multiple control cycles, the ON-time controller controls an ON-time duration of a control signal driving the switch. Activation of the switch generates an output voltage that powers a dynamic load. The ON-time controller controls attributes such as a switching frequency and/or an ON-time duration of the control signal driving the switch to regulate the output voltage. A phase-locked loop in the compensator supplies the ON-time controller with adjustment signals that adjust the ON-time duration of activating the switch to maintain the switching frequency at a desired setpoint. Thus, if a transient load condition causes the ON-time controller to temporarily operate the switch to at a value other than the desired setpoint frequency, the phase-locked loop of the compensator causes the switching frequency to align with the desired switching frequency again over one or more control cycles.

Abstract: A convenient electronic circuit in which a switch can be switched through electric power obtained using weak radio waves is provided.

Abstract: In one or more embodiments, one or more systems, methods, and/or processes may: receiving, by a first circuit of an inductor-inductor-capacitor (LLC) converter, a pulse width modulation (PWM) signal to control a gate of a metal-oxide-semiconductor field-effect transistor (MOSFET) of a plurality of metal-oxide-semiconductor field-effect transistors (MOSFETs) of the LLC converter; provide, by the first circuit, current to a transformer based at least on amplifications of the PWM by at least one of the plurality of power MOSFETs; determine, by the second circuit, if a voltage value associated with a drain of the power MOSFET is above a threshold voltage value; if so, suppress, by the second circuit, the PWM signal to the gate of the power MOSFET; and if not, permit, by the second circuit, the PWM signal to the gate of the power MOSFET.

Abstract: The circuit is of a loop-mountable unit of a fire alarm system, and includes: an adjustable current source, arranged to adjust the current from the loop through the power control circuit based on a control signal; an inverting amplifier, arranged to provide the control signal to the adjustable current source in which the control signal is based on the loop voltage; and a damper having an input for connection to a loop and an output connected to the inverting input of the inverting amplifier such that the voltage at the output of the damper is smoothed with respect to the voltage at its input.

Abstract: A system includes an input voltage node configured to provide an input voltage (VIN). The system also includes a load (RLOAD) and a switching converter coupled between the input voltage node and the load (RLOAD). The switching converter is configured to provide an output voltage (VOUT) to the load (RLOAD) based on the input voltage (VIN). The switching converter includes gate driver circuitry and a current mode control circuit coupled to the gate driver circuitry. The current mode control circuit is configured to output control signals to the gate driver circuitry in accordance with different modes of operation, wherein the current mode control circuit is configured to adjust a threshold (IPSM*) used to switch between a discontinuous conduction mode (DCM) and a power save mode (PSM).

Abstract: Aspects of the disclosure provide for a circuit. In some examples, the circuit includes an amplifier having a first input configured to receive a signal representative of a condition related to a power converter, a second input configured to receive a reference signal, and an output, a PWM regulation circuit having an input coupled to the output of the amplifier, a first output configured to provide a first control signal for a high-side transistor of the power converter, and a second output configured to output a first control signal for a low-side transistor of the power converter, and a PFM regulation circuit having an input coupled to the output of the first amplifier, a first output configured to output a second control signal for the high-side transistor of the power converter, and a second output configured to output a second control signal for the low-side transistor of the power converter.

Abstract: A direct-current power supply device includes a reactor, a bridge circuit that converts alternating-current voltage output from an alternating-current power supply, which is connected to the reactor, into direct-current voltage, a capacitor that smoothes the output voltage of the bridge circuit, a current detector that detects a first current flowing as an alternating current between the alternating-current power supply and the bridge circuit, a current detector that detects a second current flowing as a direct current between the bridge circuit and the capacitor, an overcurrent determination unit that determines on the basis of a detected first current value whether or not the first current is an overcurrent, and an overcurrent determination unit that determines on the basis of a detected second current value whether or not the second current is an overcurrent.

Abstract: A buck-boost converter may include a first switch, an inductor, a first diode, a second switch, a second diode, and a capacitor. A cathode end of the first diode may be coupled to a first end of the inductor and a second end of the first switch. An anode end of the second diode may be coupled to a second end of the inductor and a first end of the second switch. A second end of the capacitor may be coupled to a second end of the second switch and an anode end of the first diode. A first end of the capacitor may be coupled to a cathode end of the second diode.

Abstract: Circuitry comprising: a capacitor; first circuitry; and second circuitry, wherein the circuitry is operable to couple the capacitor to the first circuitry when the first circuitry is active, and to couple the capacitor to the second circuitry when the first circuitry is inactive or is not actively using the capacitor.

Abstract: A method and apparatus for rapid discharge of power rails is disclosed. A circuit includes a power converter circuit includes an inductor coupled between a switch node and regulated power supply node. A first device is coupled between an input power supply node and the switch node, while a second device is coupled between the switch node and a ground node. The power converter is configured to generate a particular voltage level on the regulated power supply node by controlling the first and second devices. The circuit also includes a control circuit which, in response to receiving a discharge comment, repeatedly activates and deactivates the second device to discharge, via the switch node and the inductor, the regulated power supply node.