Dear TI,
I am considering to use the TPS61088 to step up 9V to 10V. I am concerned that the voltage difference is too small - the resulting duty cycle will be about 10%. Section 6.5 in the datasheet states that the minimum on-time is 180ns for a switching frequency of 500kHz, which is a duty cycle of about 9%.
Will the small difference between the input and output voltages cause any issues? If so, could you please recommend a different device?
As a side note, WEBENCH suggests using a 499kOhm frequency setting resistor (when optimizing for the smallest footprint and an output current of 3A), which yields a switching frequency of about 336kHz. Consequently 10% of the period is about 300ns.
Thank you!
