Green Power Technologies' PF Switch-Assembly
Series is a smart, low cost and simple solution for active
power factor correction. The PF Switch-Assembly is
a 5 pin TO220 device that includes a controller and power MOSFET
in one package. It is based on GPT's innovative and patented PFC
control concept that does not require the sensing of input voltage,
and hence does not suffer from interferences caused by the noisy
input voltage. A highly reliable, robust and efficient APFC front
end can be easily and quickly designed by just adding a few devices
to the PF Switch-Assembly. The PF Switch-Assembly
Series assembly applies a multichip technology which enables
a complete PFC solution with only the addition of a minimum number
of external passive components. The PF Switch-Assembly
provides a complete power factor stage for up to a 700W power level.
Its' robust control circuitry and smart construction permits the
placement of the input inductor and line diodes anywhere in the
equipment's housing. This unique product frees the designer from
dealing with control loops, compensation networks and greatly simplifies
the PCB design. The PF Switch-Assembly based system
is able to start up under full load conditions and maintains stable
output voltage over a wide range of operating conditions. Integrated
fast overvoltage protection, cycle-by-cycle and average overcurrent
protection, and overtemperature protection, ensure high reliability
even under rugged operating conditions. The PF Switch-Assembly
is an excellent solution for low power applications such as ballasts,
mobile computing adaptors and flat panel monitors.
