The TPS546C25 device provides several options for tuning the output voltage feedback and response to transients. The PMBus command Section 7.67 includes all the GAIN and RAMP settings, a subset of the GAIN and RAMP settings are also selectable through prinstrapping through Programming MSEL2.

• RAMP: This sets the internal inner-loop full cycle RAMP amplitude. Smaller ramp settings result in faster response to load transient events, but also lead to increased off-time jitter. Likewise, large ramp settings result in reduced frequency jitter, but become slower to respond to an output voltage deviation. The ramp setting, along with GAIN, inductor and output capacitance also affects the small-signal bandwidth of the converter. There are two settings available through Programming MSEL2, and four options through PMBus command COMP.
• GAIN sets the propotional gain from the sensed output voltage - VOSNS when using the internal feedback divider, or VSEL/FB when using an external feedback divider. GAIN, along with RAMP, and inductor, sets the forward transconductance from the sensed output voltage to the Inductor current as the inverse of Equation 5. There are three settings available through Programming MSEL2 and twelve though PMBus command COMP.
• INT_TIME is the Integration Time Constant. The Integration Time Constant affects the settling and response time following an input or output transient. The default is for the INT_TIME is set automatically based on the switching frequency and can be overridden through the COMP register.