Abstract: A system may include an adapter, a charger, and a connector. The adapter is configured to receive an alternating current (AC) signal and generate an adapter signal, the adapter signal being generated based on an up-conversion of the AC signal. The charger is configured to generate a direct current (DC) signal from the adapter signal using one or more energy storage elements and supply the DC signal to a load, in which the adapter signal has a voltage greater than that of the DC signal. The connector is configured to couple the adapter and the charger. In some aspects, the adapter signal is adjusted based on one or more measurements of the DC signal at an output of the charger to maintain a target power for charging the load.

Abstract: A system may include an adapter, a charger, and a connector. The adapter is configured to receive an alternating current (AC) signal and generate an adapter signal, the adapter signal being generated based on an up-conversion of the AC signal. The charger is configured to generate a direct current (DC) signal from the adapter signal using one or more energy storage elements and supply the DC signal to a load, in which the adapter signal has a voltage greater than that of the DC signal. The connector is configured to couple the adapter and the charger. In some aspects, the adapter signal is adjusted based on one or more measurements of the DC signal at an output of the charger to maintain a target power for charging the load.

Abstract: A method and apparatus are provided for measuring high speed glitch energy between first and second. The method and apparatus induce a change in charge on the first node from a first charge level to a second charge level with glitch energy supplied by the second node. An amount of charge is then supplied to the first node to restore the charge on the first node from the second charge level toward the first charge level. A representation of the amount of charge supplied to the first node is measured.

Abstract: A resistance measurement circuit includes a plurality of current sources, a plurality of resistor strings and a comparator. Each resistor string is coupled in series with a respective one of the current sources and includes a plurality of nodes with different resistances relative to a reference node. Each node in each resistor string has a different resistance relative to the reference node than corresponding nodes in the other resistor strings. The comparator has a first comparison input coupled to a reference voltage and a second comparison input selectively coupled to the plurality of nodes in each resistor string.

Abstract: Systems and methods for enhancing slew control of output signals. An output driver receives an input signal and controllably increases the gain of that signal to provide a high quality output signal for use by an electronic device coupled thereto. The output driver includes an operational amplifier that maintains stability of the output signal through a feedback of the output signal. A control circuit supplies a signal to the output driver such that the driver to improve the shape of the output signal as the input signal is applied. After the operational amplifier regains control, the control circuit disengages. One embodiment of the present invention may be particularly useful as a USB output driver.

Abstract: An apparatus comprising a method for providing inverting level shifting, comprising the steps of (A) receiving an input signal having a first predetermined voltage level, (B) controlling a voltage level of said input signal and (C) generating an output signal having a second predetermined voltage level, wherein step (C) provides full scale output voltages between a first supply and a second supply.

Abstract: Systems and methods for enhancing slew control of output signals. An output driver receives an input signal and controllably increases the gain of that signal to provide a high quality output signal for use by an electronic device coupled thereto. The output driver includes an operational amplifier that maintains stability of the output signal through a feedback of the output signal. A control circuit supplies a signal to the output driver such that the driver to improve the shape of the output signal as the input signal is applied. After the operational amplifier regains control, the control circuit disengages. One embodiment of the present invention may be particularly useful as a USB output driver.

Abstract: An apparatus comprising a method for providing inverting level shifting, comprising the steps of (A) receiving an input signal having a first predetermined voltage level, (B) controlling a voltage level of said input signal and (C) generating an output signal having a second predetermined voltage level, wherein step (C) provides full scale output voltages between a first supply and a second supply.

Abstract: An apparatus comprising a control circuit and a logic circuit. The control circuit may be configured to receive an input signal and an indication signal and present a complement of the input signal. The logic circuit may be configured to receive the complementary input signal and generate an output signal. The output signal may provide full scale voltages between a first supply (e.g., VSS) and a second supply (e.g., VDD2).