Abstract: A rapid shutdown device (RSD) includes: a logic-and-analog circuit; an RSD ID storage for storing an unique RSD ID; a control command receiving circuit for receiving and decode a control command including a combination of an all-RSD turn-on command, a single-RSD turn-on command and a to-be-tested RSD ID; a switch circuit connected to the logic-and-analog circuit; and a bypass circuit connected between two output terminals of the RSD. When the switch circuit is turned off, the bypass circuit is turned on. The logic-and-analog circuit controls the on/off state of the switch circuit according to a decoding result of the control command receiving circuit and the unique RSD ID stored in the RSD ID storage. When the switch circuit is turned on, an output voltage received from a photovoltaic module coupled to the RSD is outputted via the RSD.

Abstract: A rapid shutdown device (RSD) includes: a logic-and-analog circuit; an RSD ID storage for storing an unique RSD ID; a control command receiving circuit for receiving and decode a control command including a combination of an all-RSD turn-on command, a single-RSD turn-on command and a to-be-tested RSD ID; a switch circuit connected to the logic-and-analog circuit; and a bypass circuit connected between two output terminals of the RSD. When the switch circuit is turned off, the bypass circuit is turned on. The logic-and-analog circuit controls the on/off state of the switch circuit according to a decoding result of the control command receiving circuit and the unique RSD ID stored in the RSD ID storage. When the switch circuit is turned on, an output voltage received from a photovoltaic module coupled to the RSD is outputted via the RSD.

Abstract: A DC-DC converter includes: a power stage having an inductor and a plurality of switches, for generating a plurality of output voltages from an input voltage; a control circuit, for performing time multiplexing constant charge transfer control having valley current control by transferring electrical energy from the input voltage to the plurality of output voltages sequentially one-by-one, further generating a control voltage to control respective output charges of the plurality of output voltages as respective constant predetermined values, and response to all load currents for making input power and output power balance by automatically generating a valley current so that the DC-DC converter switches between DCM and CCM; and a logic control and gate driver for generating a plurality of switch control signals, the plurality of switch control signals for controlling the plurality of switches of the power stage.

Abstract: A SIMO power converter includes: a power stage having an inductor and a plurality of switches, the power stage generating a plurality of output voltages from an input voltage; a control circuit, the control circuit controlling the SIMO power converter to be operated at either an OPDC (Ordered Power Distributive Control) mode or a Peak Current Control (PCC) mode according with different loading conditions, the control circuit further generating a plurality of duty cycles based on an inductor current of the inductor and the plurality of output voltages; and a logic control and gate driver for generating a plurality of switch control signals based on the duty cycles from the control circuit, the plurality of switch control signals for controlling the plurality of switches of the power stage.

Abstract: Provided is a SIMBO buck-boost inverting converter including: a power stage for receiving an input voltage to generate first and positive output voltages and a negative output voltage, the power stage including a plurality of switches and an inductor; a control circuit for generating a plurality of control voltages based on the first and the second positive output voltages, the negative output voltage and a current of the inductor; an energy generation and distribution circuit for generating a plurality of duty cycles based on the control voltages; and a logic control and gate driving circuit for generating a plurality of switch control signals for controlling the switches of the power stage based on the duty cycles; wherein the control circuit and the energy generation and distribution circuit feedback-control and adjust the duty cycles to adjust a balance between an input energy and an output energy.

Abstract: The present invention discloses a resonant wireless power transmitter circuit, which has an input impedance. The resonant wireless power transmitter circuit includes: a driver circuit coupled with a power supply, which includes at least a power switch; a switching resonant control circuit coupled with the driver circuit, such that the driver operates at a pre-determined or a variable resonant frequency; an adjustable impedance matching circuit coupled with the driver circuit, which includes at least a varactor; a transmitter circuit coupled with the impedance matching circuit and the driver circuit, which includes at least a transmitter coil; and an impedance control circuit coupled with the adjustable impedance matching circuit and the driver circuit, which provides an impedance control signal to control the reactance of the varactor, such that the input impedance of the resonant wireless power transmitter circuit is matched at the pre-determined or the variable resonant frequency.

Abstract: A rapid shutdown (RSD) control circuit includes: a RSD controller having first and second terminals coupled to first and second terminals of a photovoltaic cell module, respectively; a transistor having a gate coupled to the RSD controller, a source coupled to the second terminal of the photovoltaic cell module, and a drain; and a diode coupled between the drain of the transistor and the first terminal of the photovoltaic cell module. In a normal state, controlled by the RSD controller, the transistor is controlled to have a first impedance state and the photovoltaic cell module outputs an output power to an inverter. In a shutdown state, controlled by the RSD controller, the transistor and the diode are controlled as a variable impedance, and thus a voltage between the first terminal and the second terminal of the photovoltaic cell module is regulated to a desired voltage.

Abstract: A rapid shutdown (RSD) control circuit includes: a RSD controller having first and second terminals coupled to first and second terminals of a photovoltaic cell module, respectively; a transistor having a gate coupled to the RSD controller, a source coupled to the second terminal of the photovoltaic cell module, and a drain; and a diode coupled between the drain of the transistor and the first terminal of the photovoltaic cell module. In a normal state, controlled by the RSD controller, the transistor is controlled to have a first impedance state and the photovoltaic cell module outputs an output power to an inverter. In a shutdown state, controlled by the RSD controller, the transistor and the diode are controlled as a variable impedance, and thus a voltage between the first terminal and the second terminal of the photovoltaic cell module is regulated to a desired voltage.

Abstract: The present invention discloses a resonant wireless power transmitter circuit, which has an input impedance. The resonant wireless power transmitter circuit includes: a driver circuit coupled with a power supply, which includes at least a power switch; a switching resonant control circuit coupled with the driver circuit, such that the driver operates at a pre-determined or a variable resonant frequency; an adjustable impedance matching circuit coupled with the driver circuit, which includes at least a varactor; a transmitter circuit coupled with the impedance matching circuit and the driver circuit, which includes at least a transmitter coil; and an impedance control circuit coupled with the adjustable impedance matching circuit and the driver circuit, which provides an impedance control signal to control the reactance of the varactor, such that the input impedance of the resonant wireless power transmitter circuit is matched at the pre-determined or the variable resonant frequency.

Abstract: An operation method for a DC/DC converter includes: using a power stage for converting a DC input voltage into a DC output voltage, the power stage including an inductor; detecting whether the DC output voltage has an overshoot when the DC/DC converter is switched from a heavy loading into a light loading; when it is determined that the DC output voltage has the overshoot, forcing the DC/DC converter for additionally maintaining at a force continuous conduction mode (CCM) and thus discharging the DC output voltage by the inductor, and controlling the DC/DC converter switching from the force CCM into a discontinuous conductor mode (DCM).

Abstract: The present invention discloses a resonant wireless power transmitter circuit, which has an input impedance. The resonant wireless power transmitter circuit includes: a driver circuit coupled with a power supply, which includes at least a power switch; a switching resonant control circuit coupled with the driver circuit, such that the driver operates at a pre-determined or a variable resonant frequency; an adjustable impedance matching circuit coupled with the driver circuit, which includes at least a varactor; a transmitter circuit coupled with the impedance matching circuit and the driver circuit, which includes at least a transmitter coil; and an impedance control circuit coupled with the adjustable impedance matching circuit and the driver circuit, which provides an impedance control signal to control the reactance of the varactor, such that the input impedance of the resonant wireless power transmitter circuit is matched at the pre-determined or the variable resonant frequency.

Abstract: Architecture and design techniques for a single inductor multiple-output (SIMO) DC-DC converter are presented. The SIMO DC-DC converter is based on ordered-power-distributive-control (OPDC) scheme with several novel control mechanism to optimize the performance of the power delivery capability, conversion efficiency and voltage ripple. In addition to buck mode outputs, the new SIMO DC-DC converter can also have an output channel operating at auto-buck-boost mode for the input voltage varying with the usage time.

Abstract: The present invention provides a resonant wireless power transmitter circuit, including: a load circuit, a power conversion circuit which is coupled between an input power supply and the load circuit, and a phase detection and control circuit. The power conversion circuit includes plural power switches and a current sensing device. The plural power switches operate with an operating frequency to convert the input power supply to an output power for driving the load circuit, wherein the load circuit has a load current. The load current has a load current phase difference from the switching frequency. The phase detection and control circuit detects a voltage difference between the current inflow terminal and the current outflow terminal of the current sensing device within a dead time in which the plural power switches are not conductive. The voltage difference corresponds to the load current phase difference.

Abstract: A single inductor multiple-output DC-DC converter includes an inductor coupled to a first input switch and a second input switch to store energy from supply source, wherein the first input switch is coupled to an input supply node, and the second input switch is coupled to ground, the first and the second switches controlling current through the inductor; a plurality of output switches, each output switch coupled to a common inductor node and to a corresponding output supply node, each of the output supply node having a voltage converted from an input voltage received at an input supply node; a freewheel switch coupled between the common inductor node and ground; a control circuit receiving a sensed inductor current and a plurality of feedback signals indicating error signals between output voltages and their corresponding reference voltages, the control circuit being configured to control timing and charging current of the inductor.

Abstract: In a SIBO boost converter, an inductor current flows from an input to ground through an inductor and a first switch to energize the inductor. The inductor releases energy stored thereof and the inductor current flows from the inductor to ground via a second switch and a first capacitor to charge the first capacitor and to produce a first positive output thereon. The inductor is energized by the input and the inductor current flows from the inductor to a third capacitor through two third switches to charge the third capacitor and to produce a second positive output thereon. The third capacitor is discharged through two fourth switches to charge a second capacitor of the capacitors to produce a negative output thereon. Timing for producing the second positive output is non-overlapped with timing for producing the negative output.

Abstract: Provided is a control method for controlling a SIBO buck-boost converter including a first switch coupled between an input and a first node, a second switch coupled between the first node and GROUND, a third switch coupled between a second node and GROUND, a fourth switch coupled between the second node and a first output node for outputting the positive output, a fifth switch coupled between the first node and a second output node for outputting the negative output, and an inductor coupled between the first node and the second node. The first and the third switches are turned on to energize the inductor. The first and the fourth switches are turned on to generate a positive output. The third and the fifth switches are turned on to generate a negative output.

Abstract: A tunable DC voltage generating circuit includes: a resonance circuit including an inductor and an input capacitor coupled in a series connection, and arranged to operably receive an input signal and to operably generate a resonance signal at an output node between the inductor and the input capacitor; a rectifying circuit arranged to operably rectify the resonance signal; a current control unit, coupled with an output of the rectifying circuit, and coupled with the inductor or the input capacitor in a parallel connection; a stabilizing capacitor, coupled with the output of the rectifying circuit, arranged to operably provide a DC output signal having a voltage level greater than that of the input signal; and a control circuit arranged to operably adjust a current passing through the current control unit according to a setting signal to thereby manipulate the DC output signal.

Abstract: The present invention provides a resonant wireless power transmitter circuit, including: a load circuit, a power conversion circuit which is coupled between an input power supply and the load circuit, and a phase detection and control circuit. The power conversion circuit includes plural power switches and a current sensing device. The plural power switches operate with an operating frequency to convert the input power supply to an output power for driving the load circuit, wherein the load circuit has a load current. The load current has a load current phase difference from the switching frequency. The phase detection and control circuit detects a voltage difference between the current inflow terminal and the current outflow terminal of the current sensing device within a dead time in which the plural power switches are not conductive. The voltage difference corresponds to the load current phase difference.

Abstract: The present invention provides a resonant wireless power receiver circuit, including: a resonant circuit for receiving a wireless power to generate an AC resonant signal; a switch controlled rectifier circuit which includes a multi-mode switch circuit, for rectifying the AC resonant signal into a rectifier output signal to drive a load, wherein the multi-mode switch circuit includes at least one multi-mode switch; and a feedback control circuit for generating a switch control signal according to a feedback signal related to the rectifier output signal to control the at least one multi-mode switch such that it operates at least in a Resonance Short Circuit Operation to limit the rectifier output signal or to regulate the rectifier output signal. In the Resonance Short Circuit Operation, a positive resonant output node and a negative resonant output node are short-circuited by the multi-mode switch circuit.

Abstract: A resonant wireless power receiver circuit includes an adjustable impedance matching circuit and a receiver circuit, the impedance matching circuit and the receiver circuit in combination receive a wireless power and generate a resonant output. A rectifier is coupled to the combination of the adjustable impedance matching circuit and the receiver circuit to rectify the resonant output to generate a rectified output. The impedance of the adjustable impedance matching circuit is controlled by a feedback control circuit such that the load impedance of rectified output is regulated at a pre-determined impedance value, or the voltage of the rectified output is regulated at a pre-determined voltage value.