Control Circuit, Signal Conversion Circuit and Control Method
AssigneeInfineon Technologies Austria AG
InventorsYao Wang, Hanjie Yin
Life of this patent
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Abstract
A control circuit, a signal conversion circuit and a control method are disclosed. The control circuit includes a controller, which controls a load circuit according to a received input signal; and an enable module, which is connected to the controller and enables the controller on the basis of a frequency of the input signal, wherein the controller is caused to be in an operational state so as to control the load circuit according to the input signal when the frequency is higher than a predetermined threshold, and the controller is caused to be in a sleep state and thus not control the load circuit according to the input signal when the frequency is lower than the predetermined threshold
Claims20
A control circuit, comprising:
- a controller configured to control a load circuit according to a received input signal;
- and
- an enable module connected to the controller and configured to enable the controller based on a frequency of the input signal,
- wherein the controller is configured to be in an operational state to control the load circuit according to the input signal when the frequency is higher than a predetermined threshold,
- wherein the controller is configured to be in a sleep state and to not control the load circuit according to the input signal when the frequency is lower than the predetermined threshold.
A signal conversion circuit, comprising:
- an input unit configured to receive a first signal;
- a switch unit configured to output a second signal via an output end;
- and
- a switch control loop connected between the input unit and the switch unit, and configured to control a switching of the switch unit ON and OFF based on a frequency of the first signal,
- wherein a controller coupled to the output end of the switch unit is configured to be in an operational state or a sleep state according to whether the frequency of the first signal is higher than or lower than a predetermined threshold.
A control method, comprising:
- receiving an input signal via an input unit;
- converting the input signal to an enable signal at an output end of a switch unit, wherein a switch control loop is connected between the input unit and the switch unit;
- receiving the enable signal from the output end of the switch unit of the signal conversion circuit at a voltage conversion unit;
- and
- by the voltage conversion unit, and based on a level of the enable signal, causing a controller connected to the voltage conversion unit to be in an operational state to control a load circuit according to the input signal, or to be in a sleep state and to not control the load circuit according to the input signal.
Dependencies are inferred from the claim text.