Abstract: The present disclosure relates to an apparatus for adjusting AC-DC converter output voltage, the apparatus includes a plurality of ports, an AC-DC converter circuit, a plurality of DC-DC converters coupled to a plurality of controllers, where the plurality of controllers coupled to corresponding plurality of ports to operate the one or more loads, wherein at least one controller is a master controller and the other plurality of controllers are slave controllers. The master controller configured to determine, from the slave controllers power levels for each port, calculate an optimal input voltage value for the DC-DC converters and communicate the calculated value to the AC-DC converter circuit through a constant current source to regulate the amount of DC voltage that is being supplied to the DC-DC converters to operate the one or more loads, thereby leading to improved system efficiency of multiport USB based power adapter.

Abstract: Systems and methods for detecting electrical connection and disconnection on an USB Type-A charging port like power adapters, power banks and car chargers having one or more USB Type-A charging port of an USB device. The system includes: a voltage source; a MOSFET SWITCH gate driver, in USB type-A connected state, that operatively couples MOSFET SWITCH with voltage source and VBUS supply of USB type-A port; charge pump; a current sense differential amplifier; and a control unit configured to: monitor VBUS current, and detect potential disconnected state of connected USB type-A port; and monitor VBUS voltage and compare VBUS voltage with predetermined voltage to sense external condition such that VBUS voltage drops because of load capacitance and load current. The control unit is further configured to, when the duty cycle has reached a minimum VBUS current, detect the USB type-A disconnection with a charge pump state.

Abstract: A multiport universal serial bus (USB)-C based power supply device including a USB type-C port configured to supply power to a connected type-C external device, at least one USB type-A port configured to supply power to at least one connected type-A external sink device, a configurable power source and a controller operatively coupled with the configurable power source, the USB type-C port and at least one of the USB type-A port. The controller is configured to generate, based on the generated type-C and type-A power profile, at least one of a digital communication signal and a feedback control signal, which correspond to a power value to be supplied, based on the generated power profile, to the type-C port and the at least one type-A port respectively. Operation of the multiport USB-C based power supply device by a single controller facilitates compact construction of the multiport USB-C based power supply device.

Abstract: The present disclosure provides for a multi-ratio switched capacitor power converter. The converter may include one or more power switching networks supporting a plurality of power conversion modes and characterised in that: an input terminal connected to an input power source and an associated input capacitance, an output terminal connected to a load and an associated output capacitance to obtain a desired output voltage or output load current regulation; and a switching network with one or more arrangements of switches. The one or more arrangements can be of at least twelve, ten or nine switches to provide for a multi ratio, multi mode power conversion system that addresses the problems faced by existing power converters.

Abstract: The present disclosure provides a bidirectional hybrid power converter that may include an input circuit consisting of an input power supply and input capacitor, a plurality of switches connected to each other, to input power supply to a set of passive electronic components, to ground and to an output circuit comprising one or more output terminals, each consisting of an output capacitance. The plurality of switches is connected directly or through passive electronic components in an arrangement to obtain a plurality of power converter networks for battery charging as well as other applications by reuse of a set of plurality of switches. The input power supply and the output load are referred to based on the direction of the power conversion flow, forward or reverse. The first terminal can be connected to both a power source as an input and load as an output.

Abstract: The present disclosure provides for a hybrid DC-DC, Hybrid Variable Switched Capacitor (HVSC) power converter. The converter may include one or more power switching networks supporting a plurality of power conversion modes and characterised in that: an input terminal connected to an input power source and an associated input capacitance, an output terminal connected to a load and an associated output capacitance to obtain a desired output voltage or output load current regulation; and at least six switches, one or more inductors and one or more flying capacitors. The converter addresses the problems faced by inductor-based and inductor-less DC-DC power converters while providing higher power conversion efficiencies alike the inductor-less switched capacitor converters and voltage/current regulation alike the inductor-based power converters in a single power conversion unit and enable a duty cycle-based output voltage/current regulation.

Abstract: Systems and methods for detecting electrical connection and disconnection on an USB Type-A charging port like power adapters, power banks and car chargers having one or more USB Type-A charging port of an USB device. The system includes: a voltage source; a MOSFET SWITCH gate driver, in USB type-A connected state, that operatively couples MOSFET SWITCH with voltage source and VBUS supply of USB type-A port; charge pump; a current sense differential amplifier; and a control unit configured to: monitor VBUS current, and detect potential disconnected state of connected USB type-A port; and monitor VBUS voltage and compare VBUS voltage with predetermined voltage to sense external condition such that VBUS voltage drops because of load capacitance and load current. The control unit is further configured to, when the duty cycle has reached a minimum VBUS current, detect the USB type-A disconnection with a charge pump state.

Abstract: Systems and methods for detecting electrical connection and disconnection on an USB Type-A charging port like power adapters, power banks and car chargers having one or more USB Type-A charging port of an USB device. The system includes: a voltage source; a MOSFET SWITCH gate driver, in USB type-A connected state, that operatively couples MOSFET SWITCH with voltage source and VBUS supply of USB type-A port; charge pump; a current sense differential amplifier; and a control unit configured to: monitor VBUS current, and detect potential disconnected state of connected USB type-A port; and monitor VBUS voltage and compare VBUS voltage with predetermined voltage to sense external condition such that VBUS voltage drops because of load capacitance and load current. The control unit is further configured to, when the duty cycle has reached a minimum VBUS current, detect the USB type-A disconnection with a charge pump state.

Abstract: The present disclosure provides a bidirectional hybrid power converter that may include an input circuit consisting of an input power supply and input capacitor, a plurality of switches connected to each other, to input power supply to a set of passive electronic components, to ground and to an output circuit comprising one or more output terminals, each consisting of an output capacitance. The plurality of switches is connected directly or through passive electronic components in an arrangement to obtain a plurality of power converter networks for battery charging as well as other applications by reuse of a set of plurality of switches. The input power supply and the output load are referred to based on the direction of the power conversion flow, forward or reverse. The first terminal can be connected to both a power source as an input and load as an output.

Abstract: The present disclosure relates to an apparatus for adjusting AC-DC converter output voltage, the apparatus includes a plurality of ports, an AC-DC converter circuit, a plurality of DC-DC converters coupled to a plurality of controllers, where the plurality of controllers coupled to corresponding plurality of ports to operate the one or more loads, wherein at least one controller is a master controller and the other plurality of controllers are slave controllers. The master controller configured to determine, from the slave controllers power levels for each port, calculate an optimal input voltage value for the DC-DC converters and communicate the calculated value to the AC-DC converter circuit through a constant current source to regulate the amount of DC voltage that is being supplied to the DC-DC converters to operate the one or more loads, thereby leading to improved system efficiency of multiport USB based power adapter.

Abstract: A multiport universal serial bus (USB)-C based power supply device including a USB type-C port configured to supply power to a connected type-C external device, at least one USB type-A port configured to supply power to at least one connected type-A external sink device, a configurable power source and a controller operatively coupled with the configurable power source, the USB type-C port and at least one of the USB type-A port. The controller is configured to generate, based on the generated type-C and type-A power profile, at least one of a digital communication signal and a feedback control signal, which correspond to a power value to be supplied, based on the generated power profile, to the type-C port and the at least one type-A port respectively. Operation of the multiport USB-C based power supply device by a single controller facilitates compact construction of the multiport USB-C based power supply device.

Abstract: Systems and methods for detecting electrical connection and disconnection on an USB Type-A charging port like power adapters, power banks and car chargers having one or more USB Type-A charging port of an USB device. The system includes: a voltage source; a MOSFET SWITCH gate driver, in USB type-A connected state, that operatively couples MOSFET SWITCH with voltage source and VBUS supply of USB type-A port; charge pump; a current sense differential amplifier; and a control unit configured to: monitor VBUS current, and detect potential disconnected state of connected USB type-A port; and monitor VBUS voltage and compare VBUS voltage with predetermined voltage to sense external condition such that VBUS voltage drops because of load capacitance and load current. The control unit is further configured to, when the duty cycle has reached a minimum VBUS current, detect the USB type-A disconnection with a charge pump state.

Abstract: The present disclosure provides a system and method including: a first USB port and one or more second USB ports provided on the multi-port adapter; an AC-DC conversion configured to measure a first load current at the first USB port; a plurality of buck-boost mode power conversion units, each configured to measure a second load current at a corresponding one or more second USB ports; and a system controller configured to measure the first load current and the one or more second load currents, wherein the system controller is configured to compare and adjust the measured first load current and the measured one or more second load currents to, respectively, a first rated current and a corresponding second rated current for each of the one or more second USB ports.