Hello
I have some question about the different oscillator/synchronization modes.
I need to start up me converter in free running, so in "Internal Oscillator Mode", so with a resistor mounted from RT pin to AVSS.
Then, once the converter is started and the load is powered, the load (in this case a FPGA) must synchronize the converter at a higher switching frequency (depending on the application)
My problem is : it seems, reading the datasheet, that once the controller is configured in internal oscillator mode by putting a RT resistor, the sync cannot be used as an input.
The output seems to have high output impedance approx 500ohms (0.5V max output voltage on the pin if loaded by 10mA, I imagine that the internal driver is powered by the internal 5V, so a 4.5V voltage drop with 10mA output current), so can I use a low impedance driver to "overdrive" the Sync pin and then synchronize the TSP7H5001 at a higher frequency even with a RT resistor mounted ?
If not, do you have another (simple) idea for my application ?
Thank in advance for your help
Jeremy
