Analog output circuit and inverter including same
AssigneeLs Electric Co., Ltd.
InventorJu Beom Son
Life of this patent
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Abstract
The present disclosure relates to an analog output circuit and an inverter including the same. An analog output circuit according to an embodiment of the present invention is an analog output circuit of an electronic device, comprising an operational amplifier (Op-Amp) that amplifies the difference between a first input node connected to a line of an output voltage and a second input node connected to a line of an offset voltage, and outputs a bi-directional analog signal from an output node. The analog output circuit comprises: a first switch unit having one end connected to the first and second input nodes and the other end connected to the ground to switch between the one end and the other end; and a control unit that generates a control signal for controlling switching of the first switch unit.
Claims8
An analog output circuit which is an analog output circuit of an electronic device that comprises an operational amplifier (Op-Amp) that amplifies a difference between a first input node connected to a line of an output voltage and a second input node connected to a line of an offset voltage, and outputs a bi-directional analog signal from an output node, the analog output circuit comprising:
- a first switch unit having one end connected to the first and second input nodes and the other end connected to the ground to switch between the one end and the other end;
- and
- a control unit that generates a control signal for controlling switching of the first switch unit,
- wherein when the first switch unit is in an OFF state, the output voltage and the offset voltage are respectively applied to first and second input nodes, and when the first switch unit is in an ON state, the first and second input nodes operate to be in a ground state,
- wherein the control unit generates the control signal when power of a power supply unit of the electronic device is turned on and does not generate the control signal when the power of the power supply unit is turned off, and
- wherein the first switch unit is in an OFF state when the control signal is input, and the first switch unit is in an ON state when the control signal is not input.
An inverter which is an inverter that comprises an analog output circuit that outputs a bi-directional analog signal, the analog output circuit comprising:
- an operational amplifier (Op-Amp) that amplifies the difference between a first input node connected to a line of an output voltage and a second input node connected to a line of an offset voltage, and outputs a bi-directional analog signal from an output node;
- a first switch unit having one end connected to the first and second input nodes and the other end connected to the ground to switch between the one end and the other end;
- and
- a control unit that generates a control signal for controlling switching of the first switch unit,
- wherein when the first switch unit is in an OFF state, the output voltage and the offset voltage are respectively applied to first and second input nodes, and when the first switch unit is in an ON state, the first and second input nodes operate to be in a ground state.
Dependencies are inferred from the claim text.