High voltage LED and driver

摘要

A method and apparatus for providing illumination by driving LEDs using a high-voltage driver, and more specifically a method and apparatus for using a simplified boost circuit connected to an AC mains to provide a higher voltage DC driving voltage to the LED array.

主权项

1. An apparatus comprising:
an LED array including a first plurality of LEDs connected in a series, and a second plurality of LEDs connected in series, the second plurality of LEDs being connected in parallel with the first plurality of LEDs, for providing illumination; and an LED driver for providing an operating voltage to said LED array, said LED driver including:
a rectifier circuit for rectifying an AC power source into a DC power source providing a DC source voltage;a filter for filtering the DC source voltage;a voltage boost circuit for boosting the DC source voltage for providing an LED drive voltage;an oscillating circuit for driving the voltage boost circuit at an oscillation frequency, wherein the oscillating circuit is self-oscillating;a bootstrap oscillator power supply for providing power to the oscillating circuit during a power-up phase; andan oscillator power supply for supplying power to the oscillating circuit after said power-up phase.