LIGHT EMITTING DIODE DRIVING DEVICE
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United States of America Patent
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N/A
Issued Date -
Mar 5, 2015
app pub date -
May 5, 2014
filing date -
Aug 28, 2013
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A LED driving device is electrically connected to a voltage power source and a plurality of LED strings. The LED driving device includes a constant-voltage outputting module, a rectifying unit, and a constant-current controlling unit. The constant-voltage outputting module is electrically connected to the voltage power source and includes a switching unit, a resonant unit, a converting unit, and a power-balancing unit. The resonant unit is electrically connected to the switching unit. The converting unit includes a primary winding, two first secondary windings, and a second secondary winding. The primary winding is electrically connected to the resonant unit. The power-balancing unit includes a balancing converter including two balancing windings electrically connected to the first secondary windings. The rectifying unit is electrically connected to the power-balancing unit and the LED strings, the constant-current controlling unit is electrically connected to the second secondary winding and the LED strings.
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