OZ9RR MULTIPLE-CCFL INVERTER TRANSFORMER SELECTION/ DESIGN GUIDE
1. Choose a transformer from a catalog based on the following parameters of the application:
a) Output power
b) Output voltage, including open voltage
c) Size
d) Operating temperature range
2. For a multiple-CCFL design, there are 3 options for implementation. Recommended ranges for secondary main inductance and leakage inductance of each transformer are indicated for each option suitable for most applications with operating frequency range of 40-60kHz and CCFL power rating of 3-5W. Secondary leakage inductance can be adjusted through gapping of the core. Theoretical relationships between the
transformer parameters and the inverter output stage components are discussed in the supplemental information at the end of this document.