System and device for driving a plurality of high powered LED units

• US 9,894,727 B2
• Filed: 07/13/2016
• Issued: 02/13/2018
• Est. Priority Date: 11/04/2011
• Status: Active Grant

• Current Assignee: Opulent Electronics International Pte. Ltd.
• Original Assignee: Opulent Electronics International Pte. Ltd.
• Inventors: Wee, Kai Fook Francis, Tan, Chye Boon, Tan, Hai Boon, Stona, Andrea, Chan, Soon Thiam
• Primary Examiner(s): CRAWFORD, JASON
• Application Number:
  US15/208,693
• Publication Number:
  US 20170118814A1
• Time in Patent Office: 580 Days
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H02H 11/002 in case of inverted polarity or connection; with switching for obtaining correct connection
• CPC Class Codes: H02H 7/20 for electronic equipment for converters H02H7/10; for electric measuring instruments G01R1/36; for dc voltage or current semiconductor regulators G05F1/569; for amplifiers H03F1/52; for electronic switching circuits H03K17/08
• CPC Class Codes: H02H 9/041 using a short-circuiting device
• CPC Class Codes: H05B 45/10 Controlling the intensity of the light
• CPC Class Codes: H05B 45/385 using flyback topology
• CPC Class Codes: H05B 45/50 responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
• CPC Class Codes: H05B 45/59 for reducing or suppressing flicker or glow effects
• CPC Class Codes: H05B 47/105 in response to determined parameters
• CPC Class Codes: H05B 47/11 by determining the brightness or colour temperature of ambient light
• CPC Class Codes: H05B 47/19 via wireless transmission

Abstract

A LED driver having at least one Integrated Circuit (IC), the IC programmable using a hardware description language; a first electronic switch operable to provide a first switching time period to control power factor voltage, the first switching time period programmable by the at least one IC; and a second electronic switch operable to provide a second switching time period to regulate ripple free constant DC electrical current flowing into the at least one LED, the second switching time period is programmable by the at least one IC.

Claims

1. A device having an input port and a plurality of output ports comprising:

a reverse polarity protector arranged to be electrically connected to the input port and each of the plurality of output ports; and

a plurality of open circuit protection circuits, each of the plurality of open circuit protection circuits operable to connect to an output port;

wherein the reverse polarity protector is operable to negate the polarity requirement in the event where a load is connected with a wrong polarity to any of the output ports; and

the open circuit protection circuit is operable to form a closed loop series connection in the event where no load is connected to an output port or when a load breaks down.

2. The device according to claim 1, wherein the reverse polarity protector is a diode bridge rectifier.

3. The device according to claim 1, wherein each output port comprises a corresponding open circuit protector.

4. The device according to claim 1, wherein the input port is suitable for connection with a LED driver and each of the output ports is suitable for connection with a load comprising a high powered LED lamp unit.