US 12,761,250 B2 · Current detection circuit

Abstract

A current detection circuit includes: an input port, an output port; a rectifying element; a current control circuit; a load element, a first transistor, which is a first conductivity type field effect transistor; and a voltage detection circuit including a voltage detection terminal and a detection result output port. The current control circuit includes a first terminal, connected to a first power source terminal, and a second terminal, connected to an anode terminal of the rectifying element, a drain of the first transistor, and the voltage detection terminal of the voltage detection circuit. A gate of the first transistor is configured to connect the input port and a cathode terminal of the rectifying element to a second power source terminal via the load element. The output port is connected to the detection result output port of the voltage detection circuit.

Claims8

Dependent claims

A current detection circuit, comprising:

an input port;
an output port;
a rectifying element;
a current control circuit,
a load element;
a first transistor, which is a first conductivity type field effect transistor;
and
a voltage detection circuit, comprising a voltage detection terminal and a detection result output port,
the current control circuit comprising:
a first terminal, connected to a first power source terminal;
and
a second terminal, connected to an anode terminal of the rectifying element, a drain of the first transistor, and a voltage detection terminal of the voltage detection circuit,
wherein a gate of the first transistor is configured to connect the input port and a cathode terminal of the rectifying element to a second power source terminal via the load element, and
the output port is connected to a detection result output port of the voltage detection circuit,
wherein the current control circuit is configured to supply a constant current via the second terminal.

12 more elements

A current detection circuit, comprising:

an input port;
an output port;
a rectifying element;
a current control circuit,
a load element;
a first transistor, which is a first conductivity type field effect transistor;
and
a voltage detection circuit, comprising a voltage detection terminal and a detection result output port,
the current control circuit comprising:
a first terminal, connected to a first power source terminal;
and
a second terminal, connected to the input port, a cathode terminal of the rectifying element, a drain of the first transistor, and a voltage detection terminal of the voltage detection circuit, and
wherein a gate of the first transistor is configured to connect an anode terminal of the rectifying element to a second power source terminal via the load element, and
the output port is connected to a detection result output port of the voltage detection circuit.

11 more elements

Dependencies are inferred from the claim text.

Current detection circuit

Life of this patent

Current detection circuit

Life of this patent

Abstract

Claims8