Design of CCFL Backlight Inverters with Frame & Bar Cores
Summary
Portable devices, such as notebook computers and personal digital assistants are developed rapidly nowadays, which places an increasing demand on display technology. The LCD with cold cathode fluorescent back lighting satisfies the requirements on display performance, size and efficiency.
The backlight inverter plays a crucial role in supplying the power to the lamps of these flat-panel displays.
The frame and bar ferrite cores, described in this brochure, are especially designed to build the slender, low profile transformers required for these inverters.
A worked out design example is given, as well as data sheets of the standard range of 4 sizes frame and bare cores in 3C90 and 3C91, including the dedicated SMD coil formers.
Summary
Portable devices, such as notebook computers and personal digital assistants are developed rapidly nowadays, which places an increasing demand on display technology. The LCD with cold cathode fluorescent back lighting satisfies the requirements on display performance, size and efficiency.
The backlight inverter plays a crucial role in supplying the power to the lamps of these flat-panel displays.
The frame and bar ferrite cores, described in this brochure, are especially designed to build the slender, low profile transformers required for these inverters.
A worked out design example is given, as well as data sheets of the standard range of 4 sizes frame and bare cores in 3C90 and 3C91, including the dedicated SMD coil formers.
