Patent ID: 11934239
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A discrete time loop based control system, comprising:
an error amplifier having a first input configured to receive a reference signal;
a temperature sensor coupled to a second input of the error amplifier;
a discrete time controller coupled to an output of the error amplifier, wherein the discrete time controller comprises digital circuitry; and
a quantized plant comprising a quantizer that produces a digital code for control of a heater, wherein the temperature sensor produces a value that characterizes the digital code output by the quantizer, wherein the heater comprises a heating array, wherein the heating array comprises a plurality of heating elements arranged in parallel, wherein each of the plurality of heating elements comprises a respective resistor coupled to a respective switch, wherein the respective switch is controlled by a respective bit of the digital code output, wherein the temperature sensor is surrounded by the plurality of heating elements, and wherein the discrete time controller is configured to produce a control signal for controlling the quantized plant.