Dimmer compatibility – Cirrus Logic CRD1680-7W User Manual
Page 14
CRD1680-7W
14
DS1017RD3
6. DIMMER COMPATIBILITY
The boost stage is a low-side asynchronous boost converter. Once the CS1680 reaches its UVLO start threshold
and begins normal operation, the CS1680 controller executes a dimmer switch detection algorithm to set the oper-
ating state of the IC. Table 1 summarizes the system operating state that produced the empirical dimmer compati-
bility results.
Notes:
1.
Tested at nominal input voltage, nominal input frequency and without a dimmer
2.
Tested over input voltage tolerances for steady-state operation
3.
Compliant with IEC 61000-3-2 Class C < 25W
4.
Average
5.
Peak-to-peak
6.
Measured with Chroma 66202 Power Analyzer
7.
MR16 lamp efficiency is dependent on LED output voltage V
OUT
MR16 Lamp with a CS1680 (12VAC)
Date
09/09/2013
Power Factor
0.98
Vendor
Cirrus Logic
IEC-61000-3-2 Compliant (Y/N)
Y
Input Voltage (RMS)
12
EN55015 Compliant (Y/N)
Y
Form Factor
MR16
Nominal Input Power (W)
6.79
Model #
CRD1680-7W
Maximum Input Power (W)
7.0
IC
CS1680
Output Voltage (V)
12.27
Topology
Boost/Buck
Output Current (mA)
424
Isolation (Y/N)
N
Output Current Ripple
120Hz (mA)
0
Efficiency
(%)
76.6%
Output Power (W)
5.21