San Jose, Calif.Fairchild Semiconductor has introduced the FAN7710, a highly integrated ballast IC specifically developed for compact fluorescent lamp (CFL) designs. Offering a system-in-package (SiP) approach, the FAN7710 optimizes performance while simplifying design and overcoming the space limitations of CFL lighting applications.
The FAN7710 combines one high-side 625V gate driver circuit, two 550V MOSFETs, a frequency control circuit and a shunt regulator, as well as active ZVS control and an open lamp detection functions in an 8-DIP package. The FAN7710 helps designers simplify designs by reducing component count.
In addition to the FAN7710, Fairchild offers the FAN7711 for linear fluorescent lamp (LFL) designs as well as CFL applications. This ballast IC integrates all but the two high-power MOSFETs offered by the FAN7710 to make it better suited to LFL designs. The FAN7711 is available in both 8-DIP and 8-SOP packages.
Key features of the FAN7710 and FAN7711 include built-in adaptive ZVS control, which increases system stability and eliminates external open-lamp circuit protection; a built-in 15V shunt regulator ensures stable operation. They also feature two fewer frequency and time-control pins, compared to the four pins required by conventional devices, helping to simplify system design.
Programmable preheat time and run frequency enhance flexibility. Built-in HVIC utilizing a noise-canceling circuit feature (over high dv/dt common-mode noise), UVLO function and a shoot-through-preventing output buffer increases reliability.
These products are available in lead (Pb)-free packages that meet or exceed the requirements of the joint IPC/JEDEC standard J-STD-020C and are compliant with the European Union requirements now in effect.
Fairchild Semiconductor, 1-800-341-0392, www.fairchildsemi.com