SLUSDW9A June 2020 – June 2020 TPS51215A
The TPS51215A is a high performance, single-synchronous step-down controller with differential voltage feedback. It realizes accurate regulation at the specific load point over wide load range.
The TPS51215A is using D-CAP2 mode which do not require complex external compensation networks and can minimize the external components counts. An adaptive on-time control scheme is used to achieve pseudo-constant frequency. The TPS51215A adjusts the on-time (tON) to be inversely proportional to the input voltage (VIN) and proportional to the SMPS output voltage (VOUT). The switching frequency remains nearly constant over the variation of input voltage at the steady-state condition.