The GreenChipII is the second generation of green Switched Mode Power
Supply (SMPS) control ICs operating directly from the rectified universal mains. A high
level of integration leads to a cost effective power supply with a very low number of
The special built-in green functions allow the efficiency to be optimum at all power levels.
This holds for quasi-resonant operation at high power levels, as well as fixed frequency
operation with valley switching at medium power levels. At low power (standby) levels, the
system operates at reduced frequency and with valley detection.
The proprietary high voltage BCD800 process makes direct start-up possible from the
rectified mains voltage in an effective and green way. A second low voltage BICMOS IC is
used for accurate, high speed protection functions and control.
Highly efficient, reliable supplies can easily be designed using the GreenChipII control IC.