In summary, a developer would want to migrate from the L6599A to the new L6699 IC because it enables higher efficiency operation across the entire load range of the power supply. Its auto-adjusting dead-time allows the transformer's magnetizing inductance to be higher, which enables zero voltage switching to be achieved with less reactive energy, which is the magnetizing current, and increases the efficiency over a wider load range. Using the L6699 will enable higher system reliability and increase the operating lifetime of the power supply. The anti-capacitive mode protection function prevents operation in, or too close to, the capacitive mode, which guarantees zero voltage switching and reduces stresses on the MOSFETs. The soft-start function prevents hard-switching from occurring during the initial switching cycles at start-up. Lastly, the burst mode function avoids audible noise generation in burst mode. Additionally, it has been kept pin-for-pin compatible with the L6599A control IC so that it is very easy to migrate from one controller to the other in a design with only minimal component changes.