Universal voltage LED power supply with regenerating power source circuitry, non-isolated load, and 0-10V dimming circuit
First Claim
1. A light-emitting diode (LED) lighting device, comprising:
- an LED comprising a cathode of the LED connected to a voltage input terminal of the LED lighting device; and
a power supply including,(a) an inductor including a first terminal connected to the cathode of the LED and a second terminal of the inductor connected to an anode of the LED,(b) a first transistor connected in series with the inductor between the voltage input terminal and a ground voltage terminal to enable current through the inductor,(c) a first diode including an anode electrically coupled to the second terminal of the inductor,(d) a controller including a first terminal connected to a control terminal of the first transistor and a second terminal connected to a cathode of the first diode,(e) a third transistor electrically coupled in series between the second terminal of the controller and the cathode of the first diode,(f) a second transistor connected between the voltage input terminal of the LED lighting device and the second terminal of the controller in parallel with the inductor, first diode, and third transistor, and(g) a dimming controller connected to a third terminal of the controller.
1 Assignment
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Accused Products
Abstract
A light-emitting diode (LED) lighting device has an LED and a power supply including an inductor coupled to the LED. A cathode of the LED is coupled to the inductor opposite an anode of the LED. The inductor is coupled for receiving a first power signal. A transistor includes a conduction terminal coupled to the inductor to enable current through the inductor. A current from the first power signal is switched to generate a second power signal. A first diode includes an anode coupled to the inductor opposite the cathode of the LED. A controller includes a first terminal coupled to a cathode of the first diode and a second terminal coupled to a control terminal of the transistor. A dimming controller is coupled to a third terminal of the controller. A Zener diode is coupled to the first terminal of the controller.
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Citations
22 Claims
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1. A light-emitting diode (LED) lighting device, comprising:
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an LED comprising a cathode of the LED connected to a voltage input terminal of the LED lighting device; and a power supply including, (a) an inductor including a first terminal connected to the cathode of the LED and a second terminal of the inductor connected to an anode of the LED, (b) a first transistor connected in series with the inductor between the voltage input terminal and a ground voltage terminal to enable current through the inductor, (c) a first diode including an anode electrically coupled to the second terminal of the inductor, (d) a controller including a first terminal connected to a control terminal of the first transistor and a second terminal connected to a cathode of the first diode, (e) a third transistor electrically coupled in series between the second terminal of the controller and the cathode of the first diode, (f) a second transistor connected between the voltage input terminal of the LED lighting device and the second terminal of the controller in parallel with the inductor, first diode, and third transistor, and (g) a dimming controller connected to a third terminal of the controller. - View Dependent Claims (2, 3, 4, 5)
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6. An electronic circuit for providing a direct current (DC) power signal, comprising:
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a controller; a first transistor including a control terminal connected to a first terminal of the controller; an inductor including a first terminal of the inductor connected to a conduction terminal of the first transistor; a capacitor including a first terminal of the capacitor connected to the first terminal of the inductor and a second terminal of the capacitor connected to a second terminal of the controller; and a second transistor comprising a first conduction terminal connected to a second terminal of the inductor and a second conduction terminal of the second transistor connected to the second terminal of the controller, wherein the second transistor is connected to the second terminal of the controller in parallel with the inductor and capacitor. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. An electronic circuit for providing a direct current (DC) power signal, comprising:
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a controller; a first transistor including a control terminal connected to a first terminal of the controller; an inductor including a first terminal of the inductor connected to a conduction terminal of the first transistor; a capacitor including a first terminal of the capacitor connected to the first terminal of the inductor; a first diode electrically coupled in series between a second terminal of the capacitor and a second terminal of the controller; and a second transistor electrically coupled in series between the first diode and the second terminal of the controller. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method of making a circuit, comprising:
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providing a controller; providing a first transistor including a control terminal connected to a first terminal of the controller; providing an inductor including a first terminal connected to a conduction terminal of the first transistor; providing a capacitor including a first terminal of the capacitor coupled to the first terminal of the inductor and a second terminal of the capacitor coupled to a second terminal of the controller; providing a second transistor electrically coupled in series between the capacitor and second terminal of the controller; providing a first power signal at a first voltage level input to a second terminal of the inductor; providing a dimmer circuit connected to a third terminal of the controller; and using the dimmer circuit to reduce a power output of the circuit while the first power signal remains at the first voltage level. - View Dependent Claims (20, 21, 22)
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Specification