What is Efficiency Optimization?
Efficiency optimization is available for the TOPSwitch and DPA-Switch family of devices only. There are two key factors that are crucial to understanding the efficiency optimization method: The PI device capable of delivering the specified power with margin to the device’s current limit is chosen. The PI Expert efficiency optimization routine will first find the smallest PI device capable of delivering the power specified. The software will then reduce the peak to ripple primary current ratio (KP) in an attempt to make the design more continuous. This decreases the peak primary current (IP) which will decrease the peak and RMS currents in both primary and secondary windings. This reduction in current magnitudes increases the overall supply efficiency due to reduced conduction losses. The core capable of delivering the specified power efficiently is then chosen. This step in the optimization routine ensures that the core selected can not only deliver the power but can also do so without
