Methods and apparatus for providing DC power for low voltage lighting

Patent metadata

Field	Value
Publication number	US-9918373-B2
Application number	US-201615294529-A
Country	US
Kind code	B2
Filing date	Oct 14, 2016
Priority date	Oct 14, 2015
Publication date	Mar 13, 2018
Grant date	Mar 13, 2018

Abstract

A DC power supply for lighting includes low voltage driver electronics for any suitable load such as lighting along with a supervisory controller that communicates to the driver electronics via any suitable digital communication protocol. Each driver's output ports include a 3rd wire that communicates to the low voltage load fixture for the purpose of auto-negotiating the appropriate power level without first having to energize the fixture.

First claim

We claim:

1. A system for providing DC power to a driverless load comprising:
a power supply comprising:
a supervisory controller operably connected to line power;
a DC driver having an output with at least three conductors, the DC driver operably connected to line power and the supervisory controller;
a three conductor connector operably connected to the output of the DC driver; and

a cable operatively connecting the three conductor connector to the driverless load to conduct energy and communication between the power supply to the driverless load; and
an integrated circuit for single wire communication embedded in the driverless load.

2. The system of claim 1 wherein the supervisory controller communicates with the DC driver using a digital addressable lighting interface protocol.

3. The system of claim 1 wherein the DC driver provides energy to the driverless load using constant voltage pulse width modulation topology.

4. The system of claim 1 wherein the DC driver provides energy to the driverless load using constant current topology.

5. The system of claim 1 further comprising:
one or more load controllers operably connected to the supervisory controller for applying or removing energy to the driverless load.

Assignees

• Watt Stopper Inc

Inventors

• Cartrette Jonathan P
• Davis Jeffrey T

Classifications

• H02J4/25

  for transfer of electric power between AC and DC networks, e.g. for supplying the DC section within a load from an AC mains system · CPC title

• H05B47/185

  via power line carrier transmission · CPC title

• H02J4/00

  Circuit arrangements for mains or distribution networks not specified as AC or DC; Circuit arrangements for mains or distribution networks combining AC and DC sections or sub-networks (arrangements using intermediate DC-AC-DC conversion H02J1/002; arrangements using high-voltage DC [HVDC] links H02J3/36) · CPC title

• H02J1/10

  Parallel operation of DC sources · CPC title

• H02J3/00 Primary

  Circuit arrangements for AC mains or AC distribution networks · CPC title