FIG. 26 illustrates another embodiment of a two-stage integrated dimming LED driver and battery backup system. Here, an energy storage management system 2610 can provide power to a bus 2660 and the voltage to current converter 2616 can convert a bus voltage, V3, into first regulated LED current, ILEA, that can be used to drive one or more LEDs 2604 through a switch 2662 when closed. Alternatively, the energy storage management system 2610 can generate a second regulated LED current, ILED′, that can be used to drive the one or more LEDs 2604 without first passing through the voltage to current converter 2616. This second regulated LED current, ILED′, can pass through a second switch 2664 when closed. The master controller 2090 can control which of the two switches, 2662 and 2664, is closed, and thus passing regulated current, at a time.
FIG. 27 illustrates another embodiment of a single-stage integrated dimming LED driver and battery backup system. This figure shows a single-stage variation of FIG. 26.
FIG. 28 illustrates another embodiment of a single-stage integrated dimming LED driver and power backup system.
