High speed tri-level input power converter gate driver

    公开(公告)号:US10243462B2

    公开(公告)日:2019-03-26

    申请号:US15973171

    申请日:2018-05-07

    发明人: Trevor M. Newlin

    摘要: Various methods and devices that involve electronic circuits are disclosed. A disclosed method includes buffering an input signal using a first buffer. The first buffer is powered by a supply voltage and a reference voltage. The method also includes buffering the input signal using a second buffer. The second buffer is powered by the reference voltage and a ground voltage. The method also includes level shifting a first buffer output signal of the first buffer to a voltage range using a first level shifter, and level shifting a second buffer output signal of the second buffer to the voltage range using a second level shifter. The voltage range is larger than a delta between the supply voltage and the reference voltage. The reference voltage is greater than one quarter of the supply voltage and less than three quarters of the supply voltage.

    Switching regulator synchronous node snubber circuit

    公开(公告)号:US10177650B2

    公开(公告)日:2019-01-08

    申请号:US15977605

    申请日:2018-05-11

    发明人: Marshall Stanley

    IPC分类号: H02M1/34 H02M3/158

    摘要: Various methods and devices that involve snubber circuits for switching power converters are disclosed. An example power converter has a snubbing circuit. The snubber circuit comprises a bypass capacitor connecting an input node of the power converter to a ground node of the power converter, a decoupling capacitor that connects the input node of the power converter to a snubber node, and a snubbing resistor that connects the snubber node to the ground node. The snubbing resistor connects the decoupling capacitor to the ground node of the power converter. The snubbing resistor is greater than 1 ohm. The decoupling capacitor is greater than 5 nanofarads and less than 0.5 microfarads. The bypass capacitor is greater than 1 microfarads.

    Power converter with clamping circuit for overvoltage protection

    公开(公告)号:US10116218B2

    公开(公告)日:2018-10-30

    申请号:US15651998

    申请日:2017-07-17

    发明人: Trevor M. Newlin

    IPC分类号: H02M3/158 H02M1/32

    摘要: Power converters and their methods of operation are described. An example method involves regulating an output using a switching circuit that responds to a control signal. The method involves comparing a feedback voltage from the output to a reference voltage using an error amplifier to create an error voltage, and comparing the error voltage to a ramp voltage from a periodic ramp signal using a comparator to create a PWM signal. The PWM signal is used in combination with the switching circuit to regulate the output. The method involves: clamping the error voltage, using a clamping circuit, if the error voltage drops below a lowest value for the periodic ramp signal while the power converter is regulating a load; and unclamping the error voltage, using the clamping circuit, if the error voltage rises above the lowest value for the periodic ramp signal while the power converter is regulating the load.

    Method for removing an outer surface of produce

    公开(公告)号:US10080382B2

    公开(公告)日:2018-09-25

    申请号:US14605825

    申请日:2015-01-26

    IPC分类号: A23N15/08 A47J17/02

    CPC分类号: A23N15/08 A47J17/02

    摘要: Shown herein is a vessel having a rigid cylinder having an inside surface, an outside surface, a middle area, a first end and a second end opposite the first end. The first end is open. A frictional surface is located on the inside surface of the cylinder and in the middle area of the cylinder, and is capable of engaging with produce placed inside the cylinder. A first mounting surface extends from the first end of the cylinder and a first cap is removable and configured to couple with the first mounting surface on the first end. The outside surface of the cylinder is configured to engage with a hand of a user. When the produce is placed inside the cylinder and the user shakes the vessel, the produce engages the frictional surface to remove an outer surface of the produce.

    Method and apparatus for generating map data from images

    公开(公告)号:US10037611B2

    公开(公告)日:2018-07-31

    申请号:US15184279

    申请日:2016-06-16

    摘要: A method for mapping a geographical location of a feature in a satellite image is provided. An image of a geographical surface is obtained, the image comprising a plurality of pixels, data indicating the latitude and longitude of each vertex of the image and data relating to a grid corresponding to the image is obtained. A grid location of a feature in the image is received, the grid location identifying a cell in the grid. The grid location is translated into a geographical location, which comprises calculating a pixel space location of at least one vertex of the identified grid cell; converting the pixel space into a latitude/longitude space based on the obtained data indicating the latitude and longitude of each vertex; and determining the latitude and longitude of the at least one vertex of the identified cell, based on the calculated pixel space location and the latitude/longitude space.

    Auxiliary power supply for switch-mode power supplies

    公开(公告)号:US10008941B1

    公开(公告)日:2018-06-26

    申请号:US15387789

    申请日:2016-12-22

    IPC分类号: H02M3/335 H02M1/32 H02M1/36

    摘要: A combined voltage regulator and snubber circuit generally has a voltage regulator device in parallel with the energy storage element of the snubber circuit operatively connectable in series with a leakage inductance current path; the leakage inductance being part of a magnetic component utilized in a switch-mode power supply having an input voltage source, controllable semiconductor switches, freewheeling semiconductor switches, feedback controller, reactive energy storage components and a load; the voltage regulator generally providing constant or variable voltage to the gate driver of the controllable semiconductor and/or feedback controller.