Post Go back to editing

LT3471 simulation issue in LTspice


I'm simulating LT3471 to give output of +/- 6V at 50mA each from 3.3V input supply. Negative side convertor is OK working at 1.2Mhz but positive side is working at around 7 Khz. 

Is my converter going into some low frequency mode ? Why is it so ?