Other Parts Discussed in Thread: TPL0501-100
I am inclined to make R6 (in Fig 17 of the TPS56637 datasheet) adjustable (slowly), with a potentiometer, to make a 4.8-12V (approximately) adjustable power supply. Looking at eqn 5 (and Table 4) of the datasheet, it seems I can, e.g., select L1=5.6uH, and make R6 adjustable from about 63.4 to 173.4 kOhms (using a 0-100kOhm TC42X-2-104E pot in series with.a 0-10kOhm TC42X-2-104E trim pot and a 63.4 kOhm resistor, taking R7=9.1 kOhm) in order to achieve this.
However, I also noticed the following sentence in the datasheet: "Please note that dynamically adjusting output voltage is not recommended." What is the underlying reason for that recommendation? If R6 is only adjustable slowly (via a pair of pots, not electronically), and/or the load that V_out drives equal nearly zero when such adjustments are made, is the possible reason for this recommendation mitigated?