Integrated pcm driver
AssigneeMurata Manufacturing Co., Ltd.
InventorsJeffrey A. DYKSTRA, Jaroslaw ADAMSKI, Edward Nicholas COMFOLTEY
Life of this patent
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Abstract
Methods and devices to control PCM switches are disclosed. The described devices include PCM switch drivers and logic and control circuits, all integrated with the PCM and the associated heater on the same chip. Various architectures for the driver are also presented, including architectures implement feedback mechanism to mitigate variations from process, temperature, and supply voltage.
Claims21
-19. (canceled)
A method of programming a state of a phase change material (PCM) switch stack, the PCM switch stack comprising a plurality of PCM switches arranged in a stacked configuration, each PCM switch comprising a heater, the method comprising driving the plurality of PCM switches in separate time intervals, one or more PCM switches at a time.
A system for programming a state of a phase change material (PCM) switch stack, the system comprising:
- a plurality of PCM switches arranged in a stacked configuration, each PCM switch comprising a heater and a volume of phase-change material coupled to the heater;
- a plurality of driver circuits, each driver circuit coupled to one of the PCM switches;
- and
- a logic and control circuit coupled to the driver circuits,
- wherein the logic and control circuit is configured to activate the plurality of PCM switches in separate time intervals, one PCM switch at a time, by providing control pulses to the respective driver circuits to transition each PCM switch between an ON state and an OFF state.
Dependencies are inferred from the claim text.