Datasheet

CCRACGEVB
http://onsemi.com
5
Figure 6. Cap−Drop LED Driver, Non−dimming (120 VAC example)
Figure 7. Cap−Drop LED Driver, Non−dimming (230 VAC example)
Cap−Drop LED Driver Topology with Triac Dimming
(120 VAC Example):
To set up the CCRACGEVB for the Cap-Drop LED driver
dimming topology, place jumpers according to Table 5.
Figure 8 depicts the schematic with the evaluation board
reference designators.
Table 5. JUMPERS PLACED ONTO THE EVB
Jumpers in Place Reference Data
J2, J13, J18, J19, J20, J21,
J25, J26
Appendix F
This circuit has the addition of a Triac Edge Detect circuit
to switch the LED string on and off. The circuit is comprised
of: D5, D6, D10, CCR2, R12, R13 & M3. The circuit detects
the triac waveform and turns the MOSFET M3 on. CCR2
provides a basic load to the triac to keep it functioning
correctly.