Abstract: A method and apparatus for supplying a voltage in an information handling system. A modulated voltage signal output circuit linked to an amplitude control element. The amplitude control element linked to a voltage output circuit, the output circuit including one or more electrical energy-storage elements to receive an electrical current. The voltage output circuit having one or more electronic switches to alter the current passing to the energy-storage element(s) to provide a modulated voltage output.

Abstract: Field expandable battery pack systems and related methods are disclosed that allow for increased battery life while reducing cost and still meeting shipping regulations. In part, the expanded battery system includes a primary battery having a battery management unit (BMU) and additional expansion batteries that couple to the primary battery and are managed together by the shared-BMU within the primary battery. Each battery has its own protection circuitry, and the batteries can be lithium-ion batteries. As such, multiple batteries can be shipped together and then combined by a user to achieve a desired level of battery capacity that is managed as a single battery through the use of the shared-BMU.

Abstract: A method and apparatus for supplying a voltage in an information handling system. A modulated voltage signal output circuit linked to an amplitude control element. The amplitude control element linked to a voltage output circuit, the output circuit including one or more electrical energy-storage elements to receive an electrical current. The voltage output circuit having one or more electronic switches to alter the current passing to the energy-storage element(s) to provide a modulated voltage output.

Abstract: A synchronous Buck voltage regulator accepts an input voltage to provide a regulated output voltage to an information handling system processing component, such as a CPU. Input voltage is regulated by a control MOSFET, a synchronous MOSFET and a regulator controller that controls the output by controlling the control and synchronous MOSFETs. The synchronous MOSFET handles overvoltage events output from the control MOSFET by interfacing an inductor-capacitor tank circuit to reduce the overvoltage. A negative voltage protection MOSFET driver associated with the regulator controller monitors for negative voltage events that result from the interfacing of the inductor-capacitor tank circuit and selectively decouples the inductor-capacitor tank circuit if the negative voltage event is associated with a predetermined condition. The negative voltage protection MOSFET driver maintains the interface of the inductor-capacitor tank circuit if the overvoltage event is associated with a failed control MOSFET.

Abstract: Field expandable battery pack systems and related methods are disclosed that allow for increased battery life while reducing cost and still meeting shipping regulations. In part, the expanded battery system includes a primary battery having a battery management unit (BMU) and additional expansion batteries that couple to the primary battery and are managed together by the shared-BMU within the primary battery. Each battery has its own protection circuitry, and the batteries can be lithium-ion batteries. As such, multiple batteries can be shipped together and then combined by a user to achieve a desired level of battery capacity that is managed as a single battery through the use of the shared-BMU.

Abstract: A synchronous Buck voltage regulator accepts an input voltage to provide a regulated output voltage to an information handling system processing component, such as a CPU. Input voltage is regulated by a control MOSFET, a synchronous MOSFET and a regulator controller that controls the output by controlling the control and synchronous MOSFETs. The synchronous MOSFET handles overvoltage events output from the control MOSFET by interfacing an inductor-capacitor tank circuit to reduce the overvoltage. A negative voltage protection MOSFET driver associated with the regulator controller monitors for negative voltage events that result from the interfacing of the inductor-capacitor tank circuit and selectively decouples the inductor-capacitor tank circuit if the negative voltage event is associated with a predetermined condition. The negative voltage protection MOSFET driver maintains the interface of the inductor-capacitor tank circuit if the overvoltage event is associated with a failed control MOSFET.