Date: 02/07/2010

PFC controller from Fairchild Semiconductor for LCD and PDP TV applications

Fairchild has unveiled the FAN7930, an active PFC controller for boost PFC applications that operate in critical conduction mode (CRM). This device is suggested for LCD and PDP TV applications, as well as for applications using less than 200W where PFC is mandated, including Class C lighting equipment greater than 25W, and Class D PC, TV and monitors greater than 75W.

The key features of the FAN7930 are:
1. Implements a voltage-mode PWM, which compares an internal ramp signal to the error amplifier output, resulting in a MOSFET turn-off signal.
2. This controller does not need rectified AC line voltage information.
3. Includes a PFC-ready pin, which can be used to trigger the next power stages. The PFC-ready pin eliminates the need for an external circuit for PFC under-voltage lockout (UVLO).
4. It also consists of a maximum switching frequency limitation and stable operating at the abnormal condition such as high noise and current.
5. It has an AC Absent Detection function thus increasing system reliability during the fast AC On-Off Test or in the event of a short electric power failure.
6. This device also provides soft-start and overshoot-less functions, reducing voltage and current stress at start-up while eliminating audible noise from unwanted over-voltage protection (OVP) triggering.

Package: 8-pin SOP

Price: US$.1.00 for 1,000 quantity pieces

Availability: Now

For more information visit: http://www.fairchildsemi.com