Customer needs to synchronize two, 2-transistor forward converters to an external clock. They would like to use one of the parts from the UCC2800 series, but have the issue of how to synchronize them. This is one of the methods proposed for the old bipolar versions. Can this same direct drive technique be used for the UCC2805? Should I used the injected voltage spike in series with a resistor instead? If there is another part that better suites their needs, they would be open to using it. Here are the basic requirements:
-Must be absolutely limited in duty cycle to under 50%.
-PWM chip run from 5VDC external supply.
-Able to synchronize to an external clock source.
-It would be acceptable to use a 2-output, push-pull converter instead, only using one of the outputs for PWM, but only need one output.