LED DRIVING DEVICE
First Claim
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1. A light-emitting diode (LED) driving device comprising:
- a rectifier configured to convert alternating current (AC) power to direct current (DC) power;
a convertor including;
a transformer including a primary-side winding connected to the rectifier; and
a main switch connected to the primary-side winding of the transformer;
a controller configured to output a control signal to the main switch in response to a feedback signal; and
an output modifier configured to modify the feedback signal.
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Abstract
A light-emitting diode (LED) driving device comprising: a rectifier configured to convert alternating current (AC) power to direct current (DC) power; a convertor including: a transformer including a primary-side winding connected to the rectifier; and a main switch connected to the primary-side winding of the transformer; a controller configured to output a control signal to the main switch in response to a feedback signal; and an output modifier configured to modify the feedback signal.
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Citations
20 Claims
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1. A light-emitting diode (LED) driving device comprising:
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a rectifier configured to convert alternating current (AC) power to direct current (DC) power; a convertor including; a transformer including a primary-side winding connected to the rectifier; and a main switch connected to the primary-side winding of the transformer; a controller configured to output a control signal to the main switch in response to a feedback signal; and an output modifier configured to modify the feedback signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A light-emitting diode (LED) driving device comprising:
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a rectifier configured to convert alternating current (AC) power to direct current (DC) power; a convertor including; a transformer including a primary-side winding connected to the rectifier; a main switch connected to the primary-side winding of the transformer; and an inductance modifier connected to a primary-side winding of the transformer and configured to selectively modify a primary-side inductance of the transformer; and a controller configured to output a control signal to the main switch in response to a feedback signal from the convertor. - View Dependent Claims (13, 14, 15, 16)
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17. A light-emitting diode (LED) driving device comprising:
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a rectifier configured to convert alternating current (AC) power to direct current (DC) power; a convertor including; a transformer including a primary-side winding connected to the rectifier; and a main switch connected to the primary-side winding of the transformer; a controller configured to output a control signal to the main switch in response to a feedback signal from the convertor; and an output modifier configured to modify a time constant of the main switch. - View Dependent Claims (18, 19, 20)
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Specification