Abstract: A dual-stage boost converter is disclosed. The boost converter includes a charge pump and a boost stage. The charge pump is coupled between an input voltage source and the boost stage. The charge pump is coupled to receive the input voltage and configured to generate an intermediate voltage that is greater than the input voltage received from the input voltage source. The boost stage includes an inductor coupled to receive the intermediate voltage and is configured to generate an output voltage that is greater than or equal to the intermediate voltage.

Abstract: A power converter is disclosed. The power converter is configured to provide a regulated output voltage. The power converter includes a first control loop configured to generate a first voltage based on a rate of change of the regulated output voltage. A second control loop is configured to generate a second voltage based on an output current provided by the power converter. An amplifier is configured to generate a third voltage based on the first and second voltages. A control circuit is configured to control the regulated output voltage based on the third voltage.

Abstract: A dual-stage boost converter is disclosed. The boost converter includes a charge pump and a boost stage. The charge pump is coupled between an input voltage source and the boost stage. The charge pump is coupled to receive the input voltage and configured to generate an intermediate voltage that is greater than the input voltage received from the input voltage source. The boost stage includes an inductor coupled to receive the intermediate voltage and is configured to generate an output voltage that is greater than or equal to the intermediate voltage.

Abstract: Circuitry for bootstrapping and precharging a gate of a field-effect transistor (FET) is disclosed. In one embodiment, an apparatus includes a first transistor coupled to a switching node and further coupled to receive a supply voltage from a supply voltage node, and a second transistor coupled between the switching node and a ground node, wherein the first and second transistors are of a same type. A precharge circuit is configured to precharge a gate terminal of the first transistor to a voltage that is less than a supply voltage on the voltage supply node. The apparatus also includes a bootstrap circuit. Subsequent to precharging the gate terminal of the first transistor, the bootstrap circuit is configured to cause activation of the first transistor by charging the gate terminal to a voltage greater than the supply voltage.

Abstract: A control system with a voltage-to-time converter for combined buck-boost converter using a single inductor. The system includes a voltage-to-time converter circuit having first and second inputs coupled to receive first and second voltage signals, respectively. The voltage-to- time converter includes a comparator configured to compare the first voltage signal and the second voltage signal and to generate a comparator output signal at a first level if the first voltage is greater than the second voltage and at a second level if the second voltage is greater than the first voltage. The voltage-to-time converter further includes an output circuit configured to generate first and second output signals based on the comparator output signal. The output circuit is configured to provide a selected one of the first or second output signals at the first level for a duration dependent on a difference between respective voltages of the first and second voltage signals.

Abstract: A power converter is disclosed. The power converter is configured to provide a regulated output voltage. The power converter includes a first control loop configured to generate a first voltage based on a rate of change of the regulated output voltage. A second control loop is configured to generate a second voltage based on an output current provided by the power converter. An amplifier is configured to generate a third voltage based on the first and second voltages. A control circuit is configured to control the regulated output voltage based on the third voltage.

Abstract: A power converter circuit that includes a switch circuit, and multiple phase and amplifier circuits, may generate a voltage level on a regulated power supply node of a computer system. The amplifier circuits may generate respective demand currents using a voltage level of the regulated power supply node and a reference voltage. In response to activation of a multi-phase operating mode, the switch circuit may short the outputs of the amplifier circuits to generate a common demand current. The multiple phase circuits may sequentially source current to regulated power supply node using the common demand current.

Abstract: A power converter circuit that includes a switch circuit, and multiple phase and amplifier circuits, may generate a voltage level on a regulated power supply node of a computer system. The amplifier circuits may generate respective demand currents using a voltage level of the regulated power supply node and a reference voltage. In response to activation of a multi-phase operating mode, the switch circuit may short the outputs of the amplifier circuits to generate a common demand current. The multiple phase circuits may sequentially source current to regulated power supply node using the common demand current.

Abstract: A DC-DC converter that provides both buck and boost voltages using a single inductor is disclosed. The DC-DC converter includes an H-bridge circuit having an inductor having first and second terminals, and a number of switches. The switches include a first switch coupled between the second inductor terminal and a boost voltage node, a second switch coupled between the second inductor terminal and a buck voltage node, and a third switch coupled between the first inductor terminal and an input voltage node. A control circuit is coupled to activate the switches in accordance with a number of different phases such that a buck voltage (e.g., less than the input voltage) is provided on the buck voltage node, while a boost voltage (e.g., greater than the input voltage) is provided on the boost voltage node.

Abstract: A power converter circuit included in a computer system may include an adiabatic charge pump which includes multiple capacitors different numbers of which are used to charge and discharge a switch node coupled to regulated power supply node via an inductor. A control circuit may control the dividing ratio of the charge pump circuit as well as determine respective durations of when the charge pump circuit is charging and discharging the switch node.

Abstract: A DC-DC converter that provides both buck and boost voltages using a single inductor is disclosed. The DC-DC converter includes an H-bridge circuit having an inductor having first and second terminals, and a number of switches. The switches include a first switch coupled between the second inductor terminal and a boost voltage node, a second switch coupled between the second inductor terminal and a buck voltage node, and a third switch coupled between the first inductor terminal and an input voltage node. A control circuit is coupled to activate the switches in accordance with a number of different phases such that a buck voltage (e.g., less than the input voltage) is provided on the buck voltage node, while a boost voltage (e.g., greater than the input voltage) is provided on the boost voltage node.

Abstract: A circuit and a method for sensing a current flowing through a pass device of a voltage converter. The pass device is switchable between a conducting state and a non-conducting state. The circuit contains an output node for providing an indication of the current flowing through the pass device, a capacitive element, connected between the pass device and the output node. A first switching element is connected between the first terminal of the capacitive element and ground. A second switching element is connected between the second terminal of the capacitive element and ground. A control circuit controls the first and second switching elements to isolate the output node from the terminal of the pass device through the capacitive element while the pass device is in the non-conducting state.

Abstract: A method and circuit for trimming a bandgap reference are described. The bandgap reference circuit comprises a first diode which is arranged in series with a first resistor between a reference point and a reference potential VSS. The circuit also comprises a second diode which is arranged in series with a second resistor and a third resistor between the reference point and the reference potential VSS. In addition, the bandgap reference circuit comprises a trimming network, wherein a bandgap reference voltage VBG CORE is provided at a midpoint between the trimming network and the current source. The circuit also comprises an operational amplifier. The method (700) comprises measuring a first diode voltage across a replica element of the first diode; determining a first resistance of a replica element of the first resistor; and setting a resistance of the trimming network using the first diode voltage and the first resistance.

Abstract: A circuit and a method for sensing a current flowing through a pass device of a voltage converter. The pass device is switchable between a conducting state and a non-conducting state. The circuit contains an output node for providing an indication of the current flowing through the pass device, a capacitive element, connected between the pass device and the output node. A first switching element is connected between the first terminal of the capacitive element and ground. A second switching element is connected between the second terminal of the capacitive element and ground. A control circuit controls the first and second switching elements to isolate the output node from the terminal of the pass device through the capacitive element while the pass device is in the non-conducting state.