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US 2023/0067121 A1Published application
Power supply circuit having voltage switching function
AssigneeMicron Technology, Inc.
InventorTatsuya Matano
Life of this patent
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Abstract
Disclosed herein is an apparatus that includes a first reference voltage generator configured to generate a first voltage, a second reference voltage generator configured to generate a second voltage, a detection circuit configured to compare the first voltage with the second voltage to generate a selection signal, and a selection circuit configured to select one of the first and second voltages responsive to the selection signal. The detection circuit is configured to have a hysteresis property in changing a state of the selection signal.
Claims20
An apparatus comprising:
- a first reference voltage generator configured to generate a first voltage;
- a second reference voltage generator configured to generate a second voltage;
- a detection circuit configured to compare the first voltage with the second voltage to generate a selection signal;
- and
- a selection circuit configured to select one of the first and second voltages responsive to the selection signal,
- wherein the detection circuit is configured to have a hysteresis property in changing a state of the selection signal.
3 more elements
An apparatus comprising:
- a first reference voltage generator configured to generate a first voltage;
- a second reference voltage generator configured to generate a second voltage;
- a detection circuit configured to compare the first voltage with the second voltage to generate a selection signal;
- and
- a selection circuit configured to select the first voltage when the selection signal is in a first state and select the second voltage when the selection signal is in a second state,
- wherein at least one of the first and second voltages has a temperature dependency, and
- wherein the detection circuit is configured to change the selection signal from the first state to the second state at a first temperature when increasing temperature and change the selection signal from the second state to the first state at a second temperature lower than the first temperature when decreasing temperature.
4 more elements
An apparatus comprising:
- a current mirror circuit having an input current path and an output current path;
- a first transistor coupled in series with the input current path and controlled by a first reference voltage;
- a second transistor coupled in series with the output current path and controlled by a second reference voltage;
- a first additional current path coupled in parallel with one of the first and second transistors;
- and
- an output circuit coupled to the output current path to generate a first selection signal,
- wherein the first addition current path includes a third transistor controlled by one of the first and second reference voltages and a fourth transistor coupled in series with the third transistor, and
- wherein the fourth transistor is configured to be activated responsive to the first selection signal.
5 more elements
Dependencies are inferred from the claim text.