US Patent No. 10,219,361

DRIVER CIRCUIT FOR PROVIDING CONSTANT VOLTAGE TO AN AUXILIARY CIRCUIT


Patent No. 10,219,361
Issue Date February 26, 2019
Title Driver Circuit For Providing Constant Voltage To An Auxiliary Circuit
Inventorship Timothy Chen, Aurora, OH (US)
Andrew Hussey, Stow, OH (US)
Hao Wang, Twinsburg, OH (US)
Assignee TECHNICAL CONSUMER PRODUCTS, INC., Aurora, OH (US)

Claim of US Patent No. 10,219,361

1. A driver circuit for providing substantially constant DC voltage to an element that selectively operates a load, the driver circuit comprising:a lighting load having a forward voltage, the lighting load selectively illuminated based on an output voltage being provided to the lighting load that is at least the forward voltage;
a main driver for controlling current and voltage within the driver circuit such that when an auxiliary circuit indicates that the lighting load is to be illuminated, then the current delivered to the lighting load is regulated by the main driver, and when the auxiliary circuit indicates that the lighting load is not to be illuminated, then the output voltage delivered to the lighting load is controlled by the main driver to be below the forward voltage; and
a switch drivable by the main driver, the main driver driving the switch at a burst mode in response to receiving an overvoltage value from the driver circuit, wherein the output voltage is less than the forward voltage of the lighting load in response to the switch operating at the burst mode and the lighting load not being illuminated;
wherein the auxiliary circuit is in communication with the main driver, the auxiliary circuit comprises a sensor operatively controlling the main driver, and the driver circuit provides the auxiliary circuit with a substantially constant DC voltage at all operating conditions.