Software defined load detection and startup delay for LED fixture
AssigneeErp Power, LLC
InventorJames H. Mohan
Life of this patent
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Abstract
A method of initiating power-on of a light driver for driving a light source, the method including retrieving a stored load voltage of the light driver from a memory, determining a turn-on delay based on the stored load voltage, stalling power-on of the light driver for a period of time equal to the turn-on delay, initiating startup of the light driver based on the stored load voltage, determining whether current is flowing to the light source, in response to determining that current is flowing to the light source, measuring a load voltage of the light driver, and storing the load voltage in the memory.
Claims20
A method of initiating power-on of a light driver for driving a light source, the method comprising:
- retrieving a stored load voltage of the light driver from a memory;
- determining a turn-on delay based on the stored load voltage;
- stalling power-on of the light driver for a period of time equal to the turn-on delay;
- initiating startup of the light driver based on the stored load voltage;
- determining whether current is flowing to the light source;
- in response to determining that current is flowing to the light source,
- measuring a load voltage of the light driver;
- and
- storing the load voltage in the memory.
A light driver comprising:
- a converter configured to generate an output signal based on a rectified input signal for driving a light source;
- an output correction circuit coupled to an output of the converter, the output correction circuit comprising a memory and being configured to perform:
- retrieving a stored load voltage of the light driver from the memory;
- determining a turn-on delay based on the stored load voltage;
- stalling power-on of the light driver for a period of time equal to the turn-on delay;
- initiating startup of the light driver based on the stored load voltage;
- determining whether current is flowing to the light source;
- and
- in response to determining that current is flowing to the light source,
- measuring a load voltage of the light source at the output of the converter;
- and
- storing the load voltage in the memory.
Dependencies are inferred from the claim text.