Duane Morris LLP
Negative feedback system with an error compensation scheme
A negative feedback system includes a first summation module for receiving a system input and outputting a first summation output. A first forward module is coupled to the first summation module for receiving the first summation output and outputting a first forward output. A feedback module is coupled to the first summation module for receiving the first forward output and outputting a feedback output to the first summation module, wherein the first summation output equals the system input minus the feedback output. An error compensation module, having a compensation gain, is coupled to the first summation module for receiving the first summation output and outputting an error compensation output. The compensation gain is adjusted to provide the error compensation output with a predetermined value, such that an output error of a system output is substantially eliminated by combining the error compensation output with the first forward output.
Taiwan Semiconductor Manufacturing Co., Ltd.
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Chih-Chiang
Chang