Low power, scalable multichannel high voltage controller

Stamps, James Frederick; Crocker, Robert Ward; Yee, Daniel Dadwa; Dils, David Wright

Title: Low power, scalable multichannel high voltage controller

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Abstract

A low voltage control circuit is provided for individually controlling high voltage power provided over bus lines to a multitude of interconnected loads. An example of a load is a drive for capillary channels in a microfluidic system. Control is distributed from a central high voltage circuit, rather than using a number of large expensive central high voltage circuits to enable reducing circuit size and cost. Voltage is distributed to each individual load and controlled using a number of high voltage controller channel switches connected to high voltage bus lines. The channel switches each include complementary pull up and pull down photo isolator relays with photo isolator switching controlled from the central high voltage circuit to provide a desired bus line voltage. Switching of the photo isolator relays is further controlled in each channel switch using feedback from a resistor divider circuit to maintain the bus voltage swing within desired limits. Current sensing is provided using a switched resistive load in each channel switch, with switching of the resistive loads controlled from the central high voltage circuit.

Inventors:

Stamps, James Frederick ^[1]; Crocker, Robert Ward ^[2]; Yee, Daniel Dadwa ^[3]; Dils, David Wright ^[4]

Livermore, CA
Fremont, CA
Dublin, CA
Fort Worth, TX

Issue Date:: 2008-03-25

Research Org.:: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 927908

Patent Number(s):: 7348688

Application Number:: 11/330,269

Assignee:: Sandia Corporation (Livermore, CA)

Patent Classifications (CPCs):: H - ELECTRICITY H02 - GENERATION H02M - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS

H - ELECTRICITY H02 - GENERATION H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER

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H - ELECTRICITY H02 - GENERATION H02M - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS
H02M2001/0009 - {Devices and circuits for detecting current in a converter}

H - ELECTRICITY H02 - GENERATION H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER
H02J1/08 - Three-wire systems
H02J1/082 - {Plural DC voltage, e.g. DC supply voltage with at least two different DC voltage levels}

H - ELECTRICITY H02 - GENERATION H02M - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS
H02M1/092 - the control signals being transmitted optically
H02M2001/008 - {Plural converter units for generating at least two independent, non-parallel outputs, e.g. systems with plural point of load switching regulators}

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DOE Contract Number:: AC04-94AL85000

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

Citation Formats


                    Stamps, James Frederick, Crocker, Robert Ward, Yee, Daniel Dadwa, and Dils, David Wright. Low power, scalable multichannel high voltage controller.  United States: N. p., 2008. 
        Web.

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                    Stamps, James Frederick, Crocker, Robert Ward, Yee, Daniel Dadwa, & Dils, David Wright. Low power, scalable multichannel high voltage controller.  United States.

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                    Stamps, James Frederick, Crocker, Robert Ward, Yee, Daniel Dadwa, and Dils, David Wright. Tue .  
        "Low power, scalable multichannel high voltage controller".  United States.  https://www.osti.gov/servlets/purl/927908.

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@article{osti_927908,

  title        = {Low power, scalable multichannel high voltage controller},

  author       = {Stamps, James Frederick and Crocker, Robert Ward and Yee, Daniel Dadwa and Dils, David Wright},

  abstractNote = {A low voltage control circuit is provided for individually controlling high voltage power provided over bus lines to a multitude of interconnected loads. An example of a load is a drive for capillary channels in a microfluidic system. Control is distributed from a central high voltage circuit, rather than using a number of large expensive central high voltage circuits to enable reducing circuit size and cost. Voltage is distributed to each individual load and controlled using a number of high voltage controller channel switches connected to high voltage bus lines. The channel switches each include complementary pull up and pull down photo isolator relays with photo isolator switching controlled from the central high voltage circuit to provide a desired bus line voltage. Switching of the photo isolator relays is further controlled in each channel switch using feedback from a resistor divider circuit to maintain the bus voltage swing within desired limits. Current sensing is provided using a switched resistive load in each channel switch, with switching of the resistive loads controlled from the central high voltage circuit.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2008},

  month        = {3}

}

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