High voltage latching and dc restoration isolation and level shifting method and apparatus
AssigneePowerprecise Solutions, Inc.
InventorsGary Stirk, Jong-Dii Jiang, John Houldsworth
Life of this patent
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Abstract
A device and method for dc isolation and level shifting includes a driver circuit powered by a first voltage range, a capacitor connected to the driver circuit, and a latching circuit connected to the capacitor. The latching circuit is powered by a second voltage range and is configured to restore and/or minimize charge loss of the capacitor during a voltage transition at the capacitor. A device and method for analog isolation and measurement configured to measure an analog voltage at a second potential without requiring analog circuits at the second potential.
Claims38
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A V-bus circuit, comprising:
- a first level circuit;
- a level shifter connected to the first level circuit;
- a second level circuit connected to the level shifter;
- and
- a capacitor connected to a terminal of the second level shifter,
- wherein the level shifter is configured to control inputs of the first and second level circuits.
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A circuit for controlling and monitoring voltages, comprising:
- a first V-bus circuit;
- a first measurement and control circuit in communication with the first V-bus circuit;
- and
- a second measurement and control circuit in communication with the first measurement and control circuit,
- wherein the first and second measurement and control circuits are configured to operate in different voltage ranges.
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A method for monitoring and controlling a series of batteries, comprising:
- operating first and second measurement circuits in different voltage ranges, the second measurement and control circuit being in communication with the first measurement and control circuit and the first measurement and control circuit being in communication with a V-bus circuit;
- and
- controlling a voltage of a series of batteries connected to the first and the second measurement and control circuits using the V-bus circuit.
Dependencies are inferred from the claim text.