| 主权项 |
1. An apparatus for controlling a switched-mode power supply converting a source voltage into a supply output voltage, wherein said supply output voltage is indicative of a reference voltage, and wherein said power supply comprises a switch providing a switching voltage and controlled by a control signal, the apparatus comprising:
a) an integrator characterized by an integration time constant and operable to receive an integrator input signal and to produce an integrator output signal, wherein said integrator output signal is proportional to an antiderivative of said integrator input signal; and b) a comparator operable to receive a comparator input signal and to output said control signal; wherein said integrator input signal comprises a first integrator input component proportional to said switched voltage and a second integrator input component proportional to said reference voltage, wherein said comparator input signal comprises a first comparator input component proportional to said integrator output signal, a second comparator input component proportional to said supply output voltage, and a third comparator input component proportional to a frequency control signal, wherein said switching voltage is characterized by a switching frequency, and wherein said switching frequency is indicative of a frequency of said frequency control signal. |
