DC power conversion circuit with constant current output
First Claim
1. A direct-current (DC) power conversion circuit with constant current output comprising:
- a DC voltage source for providing DC power;
a driving circuit comprising;
a switch having a first end coupled to the DC voltage source, a second end for receiving a control signal, and a third end, the switch used for conducting or cutting off a coupling between the first end and the third end according to the control signal received by the second end;
a resistor having a first end coupled to the third end of the switch and a second end coupled to a first grounding end;
a diode having a first end coupled to the third end of the switch and the first end of the resistor, and a second end coupled to a second grounding end; and
an inductor having a first end coupled to the first grounding end, and a second end coupled to a load circuit; and
a control signal generator having a first input end coupled to the second third end of the switch, a second input end coupled to the first grounding end, and an output end coupled to the third second end of the switch, the control signal generator for generating the control signal for the second end of the switch according to a current of the resistor.
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Accused Products
Abstract
A DC power conversion circuit with constant current output includes a DC voltage source, a driving circuit and a control signal generator. The DC voltage source is used for providing DC power. The driving circuit includes a switch, a resistor, a diode, and an inductor. The switch has three ends, one used for receiving a control signal. Furthermore, the switch is used for conducting or cutting off a coupling between the other two ends according to the control signal. The resistor is coupled between the switch and a first grounding end. The diode has a first end and a second end coupled to a second grounding end. The inductor has a first end coupled to the first grounding end, and a second end coupled to a load circuit. The control signal generator generates the control signal for the second end of the switch according to a current of the resistor.
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Citations
16 Claims
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1. A direct-current (DC) power conversion circuit with constant current output comprising:
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a DC voltage source for providing DC power; a driving circuit comprising; a switch having a first end coupled to the DC voltage source, a second end for receiving a control signal, and a third end, the switch used for conducting or cutting off a coupling between the first end and the third end according to the control signal received by the second end; a resistor having a first end coupled to the third end of the switch and a second end coupled to a first grounding end; a diode having a first end coupled to the third end of the switch and the first end of the resistor, and a second end coupled to a second grounding end; and an inductor having a first end coupled to the first grounding end, and a second end coupled to a load circuit; and a control signal generator having a first input end coupled to the second third end of the switch, a second input end coupled to the first grounding end, and an output end coupled to the third second end of the switch, the control signal generator for generating the control signal for the second end of the switch according to a current of the resistor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A direct-current (DC) power conversion circuit with constant current output comprising:
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a DC voltage source for providing DC power; a driving circuit comprising; a switch having a first end coupled to the DC voltage source, a second end for receiving a control signal, and a third end, the switch used for conducting or cutting off a coupling between the first end and the third end according to the control signal received by the second end; a first resistor having a first end coupled to the third end of the switch and a second end coupled to a first grounding end; a second resistor having a first end and a second end coupled to the first grounding end; a diode having a first end coupled to the first end of the second resistor, and a second end coupled to a second grounding end; and an inductor having a first end coupled to the first grounding end, and a second end coupled to a load circuit; and a control signal generator coupled to the second and third ends of the switch, the first end of the second resistor, and the first grounding end, for generating the control signal for the second end of the switch according to a current of the first or second resistor. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification