The TPS62085, TPS62086, and TPS62087 synchronous step-down converters are based on the DCS-Control (Direct Control with Seamless transition into Power Save Mode) topology. This is an advanced regulation topology that combines the advantages of hysteretic, voltage, and current mode control schemes.
The DCS-Control topology operates in PWM (pulse width modulation) mode for medium to heavy load conditions and in Power Save Mode at light load currents. In PWM mode, the converter operates with its nominal switching frequency of 2.4 MHz, having a controlled frequency variation over the input voltage range. As the load current decreases, the converter enters Power Save Mode, reducing the switching frequency and minimizing the IC quiescent current to achieve high efficiency over the entire load current range. Because DCS-Control supports both operation modes (PWM and PSM) within a single building block, the transition from PWM mode to Power Save Mode is seamless and without effects on the output voltage. Fixed output voltage version provides smallest solution size combined with lowest no load current. The devices offer both excellent DC voltage and superior load transient regulation, combined with very low output voltage ripple, minimizing interference with RF circuits.