PMP7773 is a SEPIC replacement buck boost step up/ step down converter with one inductor, two FETs and two diodes. The design also incorporates a boost converter and takes the 5V out and boosts it to 15V. It also has a switch capacitor converter. LM2662 takes the step up/ step down output and steps it to 10V which is used as a bias supply for boost converter LM5020.
PMP7797 is a wide-input SEPIC converter designed for automotive applications. This design uses the LM25037Q push-pull controller as an interleaved boost, which incorporates two gate drivers for controlling two sets of MOSFET switches. The input is 12V nominal with a working range of 6V at cold crank to 42V at load dump. An auxiliary soft-start circuit is incorporated into the design, as well as input and output LC filters. At higher input voltage this SEPIC is capable of higher output current as shown by the typical efficiency plot.