POWER CONVERTING APPARATUS AND METHOD OF SENSING OUTPUT CURRENT THEREOF
First Claim
1. A power converting apparatus, comprising:
- a power converter configured to convert an input voltage into an output voltage;
a first resistor connected to an output of the power converter;
a second resistor connected to the first resistor;
a current controller configured to control a first current to make the first current that is less than a second current flowing in the first resistor flow in the second resistor, and to output a third current corresponding to the first current;
a voltage sensor configured to sense a first voltage corresponding to the third current;
a sample/holder configured to sample the first voltage, and to output the sampled voltage; and
a switch controller configured to control operation of the power converter based on a voltage output from the sample/holder.
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Abstract
A power converting apparatus includes a power converter, a first resistor, a second resistor, a current controller, a voltage sensor, a sample/holder, and a switch controller. The power converter converts an input voltage into an output voltage. The first resistor is connected to an output of the power converter, and the second resistor is connected to the first resistor. The current controller controls a first current to make the first current that is less than a second current flowing in the first resistor flow in the second resistor, and outputs a third current corresponding to the first current. The voltage sensor senses a first voltage corresponding to the third current. The sample/holder samples the first voltage, and outputs the sampled voltage. The switch controller controls an operation of the power converter based on a voltage output from the sample/holder.
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Citations
20 Claims
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1. A power converting apparatus, comprising:
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a power converter configured to convert an input voltage into an output voltage; a first resistor connected to an output of the power converter; a second resistor connected to the first resistor; a current controller configured to control a first current to make the first current that is less than a second current flowing in the first resistor flow in the second resistor, and to output a third current corresponding to the first current; a voltage sensor configured to sense a first voltage corresponding to the third current; a sample/holder configured to sample the first voltage, and to output the sampled voltage; and a switch controller configured to control operation of the power converter based on a voltage output from the sample/holder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of sensing an output current flowing in an output unit of a power converting apparatus, the method comprising:
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storing power according to an input voltage while the input voltage is blocked from the output unit; and generating an output voltage of the output unit based on the stored power, and wherein storing the power comprises; generating a first current that is less than the output current flowing in the output unit; sensing a voltage according to a second current corresponding to the first current; and sampling the sensed voltage, wherein generating the output voltage comprises; outputting the sampled voltage; and controlling an operation of the power converting apparatus based on the sampled voltage. - View Dependent Claims (14, 15, 16)
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17. A power converting apparatus, comprising:
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a power converter including a capacitor, and configured to convert an input voltage into an output voltage to store the output voltage to the capacitor; a first resistor having a first terminal connected to the capacitor, and a second terminal; a second resistor having a first terminal connected to the second terminal of the first resistor, and a second terminal; a comparator having a first input terminal connected to the first terminal of the first resistor, a second input terminal connected to the second terminal of the second resistor, and an output terminal; a transistor having a control terminal connected to the output terminal of the comparator, an input terminal connected to the second terminal of the second resistor, and an output terminal; a third resistor connected to the output terminal of the transistor; a sample/holder configured to sample a voltage of the third resistor, and to output the sampled voltage; and a switch controller configured to control an operation of the power converter based on a voltage output from the sample/holder. - View Dependent Claims (18, 19, 20)
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Specification