Power supply controller
First Claim
1. A power supply controller, comprising:
- a switching element that is disposed between a power source and a load;
a current detecting element that outputs a detection signal corresponding to a load current that flows to the switching element;
a voltage generator circuit that generates a generation voltage that corresponds to an output voltage between the switching element and the load;
an anomaly detecting circuit that, based on the detection signal and the generation voltage, outputs an abnormal signal when the load current exceeds a threshold current, wherein the threshold current that corresponds to the generation voltage;
a protection circuit that performs a predetermined protection operation based on the abnormal signal that is outputted from the anomaly detecting circuit;
a control circuit into which an on signal and an off signal are inputted, and which turns on the switching element based on input of the on signal and turns off the switching element based on input of the off signal; and
a blocking circuit that blocks execution of the predetermined protection operation by the protection circuit when the off signal is inputted.
1 Assignment
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Accused Products
Abstract
One aspect of the present invention is directed to a power supply controller that includes a switching element disposed between a power source and a load, a current detecting element connected to the switching element and capable of outputting a detection signal in the form of a load current to the switching element, a voltage generator circuit capable of supplying an output voltage between the switching element and the load, an anomaly detecting circuit capable of outputting an abnormal signal when the load current exceeds a threshold current such that the threshold current corresponds to the output voltage The present invention can further include a protection circuit capable of performing a predetermined protection operation based on the abnormal signal, a control circuit capable of receiving an on signal and an off signal, wherein the control circuit turns on the switching element when receiving the on signal and turns off the switching element when receiving the off signal, and a blocking circuit capable of blocking the predetermined protection operation when the off signal is received.
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Citations
12 Claims
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1. A power supply controller, comprising:
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a switching element that is disposed between a power source and a load; a current detecting element that outputs a detection signal corresponding to a load current that flows to the switching element; a voltage generator circuit that generates a generation voltage that corresponds to an output voltage between the switching element and the load; an anomaly detecting circuit that, based on the detection signal and the generation voltage, outputs an abnormal signal when the load current exceeds a threshold current, wherein the threshold current that corresponds to the generation voltage; a protection circuit that performs a predetermined protection operation based on the abnormal signal that is outputted from the anomaly detecting circuit; a control circuit into which an on signal and an off signal are inputted, and which turns on the switching element based on input of the on signal and turns off the switching element based on input of the off signal; and a blocking circuit that blocks execution of the predetermined protection operation by the protection circuit when the off signal is inputted. - View Dependent Claims (2, 3, 4)
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5. A power supply controller, comprising:
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a switching element that is disposed between a power source and a load; a current detecting element connected to the switching element and is capable of outputting a detection signal in the form of a load current to the switching element; a voltage generator circuit capable of supplying an output voltage between the switching element and the load; an anomaly detecting circuit capable of outputting an abnormal signal when the load current exceeds a threshold current, wherein the threshold current corresponds to the output voltage; a protection circuit capable of performing a predetermined protection operation based on the abnormal signal; a control circuit capable of receiving an on signal and an off signal, wherein the control circuit turns on the switching element when receiving the on signal and turns off the switching element when receiving the off signal; and a blocking circuit capable of blocking the predetermined protection operation when the off signal is received. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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Specification