PFC controller for electronic ballasts saves power, size and part count

As an efficient solution to providing power-factor correction for electronic ballasts and other switched-mode converters, the ON Semiconductor NCP1606 operates in Critical Conduction Mode (CRM) with constant on-time to save space and power consumption.

CRM with voltage-mode control allows the NCP1606 to achieve high power factor without requiring line-sensing components, which otherwise increase part count and standby power consumption. By implementing CRM, the NCP1606 is also able to achieve unity power factor across a wide range of input voltages and power levels, to maximise performance in many applications.

A totem-pole gate driver capable of 500mA/800mA sink/source current enables rapid turn-on and turn-off for higher efficiency and the ability to drive high-power MOSFETs.

 

FEATURES Adjustable over-voltage protection with two current-level options Under-voltage protection Open-loop protection High-accuracy voltage reference <40µA startup current 2.1mA typical operating current

APPLICATIONS Electronic lamp ballasts LCD- or plasma-TV power supplies Desktop PCs AC adapters

 

 

Development boards NCP1606BOOSTGEVB and NCP1606LCDTVGEVB are available to members of the Future Board Club. For more information, go to On Semi's NCP1606BOOSTGEVB or NCP1606LCDTVGEVB Product Page or alternatively if you would like to order a board go to http://www.my-boardclub.com/manf-offers.htm This offer is free and subject to qualification.

 

ON Semi NCP1606 PFC Controller