I have a question about harmonics of the TPS63001. From what I can gather switching mode power supplies are nonlinear loads which can superimpose additional frequency components onto a pure sinewave. These frequencies are harmonics (integer multiples) of the fundamental frequency, and can sometimes propagate outwards from nonlinear loads.
The design guide for the one of my components, the GPS Module TC6000GN-P1 which I believe uses a TI CC4000 as it's MCU states...
Special attention should be paid to the harmonics of the SMPS (Switched Mode Power Supply). Even if the levels are very low, the GPS reception quality may decrease if any harmonics hit the GPS frequency (1.57542GHz). Please check your SMPS under several conditions, because the switching frequency and therefore the harmonics may move with temperature, load and age. Some SMPS use spread spectrum, which lowers the level but widens the spectrum.
The oscillator frequency of the TPS63001 is between 1.25 MHz and 1.8 MHz and 1000 is definately an integer multiple.
Does it appear likely to anyone with knowledge of such things that the TPS63001 harmonics will hit the GPS frequency of 1.57542GHz?
If the answer is affirmative I might be able to find a buck/boost with a different oscillator frequency before committing to PCB production.
Thanks
