3A switch current — the power ceiling for your rail
The TPS61175PWP integrates a 3A switch, which sets the practical output power limit for boost, flyback, or SEPIC topologies. With an input range from 2.9V to 18V and output adjustable up to 38V, this part covers battery-powered portable gear, multi-rail industrial supplies, and intermediate bus converters where you need a single inductor to generate a higher voltage from a low-voltage source.
Switching frequency — inductor size vs efficiency trade-off
Running at the low end uses a larger inductor but cuts switching losses; at 2.2MHz you shrink the magnetics to fit tight board areas, but the FET switching losses climb. The external sync input lets you lock the frequency to a system clock if beat-frequency noise is a concern.
14-HTSSOP with exposed pad — thermal path matters
A layout that skips the thermal vias under the pad will hit thermal shutdown on a 12V-to-24V boost at full load.
The base product number TPS61175 covers multiple output-current and package variants, so the design can migrate to a different suffix if future BOM needs shift.