Trigger circuit and light apparatus comprising the same
AssigneeMagnaChip Semiconductor, Ltd.
InventorSeung Woo Hong
Life of this patent
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Abstract
A trigger circuit includes a high voltage protector configured to scale down a first voltage according to an internal voltage to output a second voltage having a lower level than the first voltage, a switching trigger configured to detect that the outputted second voltage falls below a certain voltage level to provide a switching trigger signal, and a switching controller configured to provide a switching control signal for turning on a driving switching element based on the switching trigger signal.
Claims16
A trigger circuit, comprising:
- a high voltage protector configured to scale down a first voltage according to an internal voltage to output a second voltage having a lower level than the first voltage;
- a switching trigger configured to detect that the outputted second voltage falls below a certain voltage level to provide a switching trigger signal;
- and
- a switching controller configured to provide a switching control signal for turning on a driving switching element in response to receiving the switching trigger signal.
A light emitting diode light apparatus, comprising:
- a Light Emitting Diode (LED) module;
- an inductor connected in series to the LED module;
- a driving switching element connected in series to the inductor;
- and
- a trigger circuit configured to scale down an external voltage generated through a driving current driving the LED module to turn on the driving switching element when the scaled down voltage falls below a certain voltage,
- wherein the trigger circuit comprises:
- a high voltage protector configured to scale down a first voltage according to an internal voltage to output a second voltage lower than the first voltage level;
- a switching trigger configured to detect that the outputted second voltage falls below a certain voltage to provide a switching trigger signal;
- and
- a switching controller configured to provide a switching control signal for turning on a driving switching element based on the switching trigger signal.
A driving method of a trigger circuit, comprising:
- scaling down a first voltage according to an internal voltage to output a second voltage having a lower level than the first voltage;
- detecting that the outputted second voltage falls below a certain voltage level to provide a switching trigger signal;
- and
- providing a switching control signal for turning on a driving switching element based on the switching trigger signal.
Dependencies are inferred from the claim text.