Biasing of a current generation architecture for an implantable medical device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10786665
APP PUB NO 20180071511A1
SERIAL NO

15695984

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Abstract

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Digital-to-analog converter (DAC) circuitry for providing currents at electrodes of an Implantable Pulse Generator (IPG) is disclosed. The DAC circuitry includes at least one PDAC for sourcing current to the electrodes, and at least one NDAC for sinking current from the electrodes. The PDACs are powered with power supplies VH (the compliance voltage) and Vssh in a high power domain, and the NDACs are powered with power supplies Vcc and ground in a low power domain. VH may change during IPG operation, and Vssh preferably also changes with a fixed difference with respect to VH. Digital control signals to the PDACs are formed (and possibly converted into) the high power domain, and transistors used to build the PDACs are biased in the high power domain, and thus may also change with VH. This permits transistors in the PDACs and NDACs to be made from normal low-voltage logic transistors.

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Patent Owner(s)

Patent OwnerAddress
BOSTON SCIENTIFIC NEUROMODULATION CORPORATION25155 RYE CANYON LOOP VALENCIA CA 91355

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Feldman, Emanuel Simi Valley, US 57 1493
Gururaj, Kiran K Valencia, US 17 50
Marnfeldt, Goran N Valencia, US 127 4121
Wagenbach, David M Simi Valley, US 11 83
Weerakoon, Pujitha Valencia, US 26 166
Weiss, Philip L Sherman Oaks, US 11 89

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