Configurable LED driver/dimmer for solid state lighting applications
A configurable light emitting diode (LED) driver for powering a set of light fixture loads including a power circuit and a primary controller for controlling the power circuit. The driver further includes a set of output current drivers, each of the set of output current drivers connected to one of the set of light fixture loads for controlling the associated light fixture load and a secondary controller for controlling the set of output current drivers. The driver also includes an apparatus for mapping the set of output current drivers to various dimming zones and for mapping output channels into groups.
1. A configurable light emitting diode (LED) driver for powering a set of light fixture loads comprising:
a power circuit including:
an inrush current limit,
an apparatus for power factor correction and DC/DC conversion, and
a regulated output voltage bus connected to the apparatus for power factor correction and DC/DC conversion;
a primary controller for controlling the power circuit;
a set of output current drivers, each of the set of output current drivers connected to one of the set of light fixture loads for powering the connected light fixture load; and
an apparatus for mapping the set of output current drivers to various dimming zones and for mapping output channels into groups.
2. The LED driver of claim 1 wherein the apparatus for mapping comprises:
a secondary controller; and
a port for mapping the output channels into groups.
3. The LED driver of claim 2 wherein the output channels are mapped for DMX512A control.
4. The LED driver of claim 2 wherein the output channels are mapped for 0-10 Vdc analog control.
5. The LED driver of claim 2 wherein the port is an in-circuit serial programming (ICSP) port.
6. The LED driver of claim 1 further comprising a communication interface for receiving data from an external transmitter.
7. The LED driver of claim 6 wherein the communication interface is DMX512A, 0-10 Vdc analog control, Zigbee wireless or remote device management (RDM) compatible.
8. The LED driver of claim 2 further comprising a communication interface for receiving data from an external transmitter.
9. The LED driver of claim 8 wherein the communication interface includes a universal asynchronous receiver/transmitter (UART) to transmit data to the secondary controller.
10. The LED driver of claim 8 further comprising an auxiliary flyback converter to provide power to the primary controller, the secondary controller, and the communication interface.
11. The LED driver of claim 10 wherein the primary and secondary controllers are digital controllers.
12. The LED driver of claim 1 wherein the light fixture load is one of an Organic LED (OLED) load or an LED load.
13. The LED driver of claim 12 wherein the primary and secondary controllers are digital controllers.
14. The LED driver of claim 1 further comprising a housing with a heatsink portion for housing the components of the LED driver.
15. The LED driver of claim 14 wherein the heatsink comprises fins.
16. The LED driver of claim 1 wherein the apparatus for power factor correction and DC/DC conversion comprises:
a DC/DC converter; and
a power factor correction (PFC) boost connected to the inrush current limit and the DC/DC converter.
17. The LED driver of claim 16 further comprising at least one power limit connected to the regulated output voltage bus.
18. The LED driver of claim 1 further comprising a set of isolation barriers to separate components of the driver from each other.
19. The LED driver of claim 1 wherein each of the set of output current drivers comprises:
a load controller;
a current source; and
a current sense.
20. The LED driver of claim 19 wherein the load controller comprises a signal generator.