CTX410807-R

The CTX410807-R is a Cold Cathode Fluorescent Lamp Inverter Transformer with ferrite core. The Cooper Bussmann® Coiltronics® brand CCFL transformer is designed to work with inexpensive Royer class self-oscillating circuits. A current-fed, push-pull topology is commonly used to power the CCFL transformer. This topology accommodates a wide input voltage and consists of a resonant push-pull stage, a pulse-width-modulated (PWM) buck-derived control stage and a high-voltage secondary stage. The push pull stage consists of transistors Q2 and Q3 to drive the center-tapped transformer T1. The transistor is driven 180° out of phase at 50% duty cycle with an auxiliary winding on the transformer. A resonant tank is formed between the primary inductance of the transformer and a low loss, external resonant bulk capacitor C1. The resonant tank provides a sinusoidal voltage to the transformer's primary winding and sets the system's operating frequency.

• 0 to 70°C Operating ambient temperature range

Applications

Computers & Computer Peripherals, Automotive, Test & Measurement, Medical, Power Management