In need of Power Supply Idea
No, if it is a power rail, an AWG is not likely to supply proper current. You need a dedicated instrument called "programmable power supply" like this Keysight N6705C instrument, or similar.

Alternatively, for this slow ramp, you can use a less expensive standard programmable PS (like E36103) and control it via the built-in Web interface, BenchVue, or Keysight IO Libraries.