The TPSM8282x synchronous step-down converter power module is based on DCS-Control (Direct Control with Seamless transition into power save mode). This is an advanced regulation topology that combines the advantages of hysteretic, voltage, and current mode control.

The DCS-Control topology operates in PWM (pulse width modulation) mode for medium to heavy load conditions and in PSM (power save mode) at light load currents. In PWM, the converter operates with its nominal switching frequency of 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 quiescent current of the IC to achieve high efficiency over the entire load current range. DCS-Control supports both operation modes using a single building block and, therefore, has a seamless transition from PWM to PSM without effects on the output voltage.

The forced PWM versions of this device, the TPSM8282xA, does not enter PSM (power save mode) at light load currents and stays in CCM (continuous conduction mode) regardless of the output current in order to minimize the output ripple.

The TPSM8282x offers excellent DC voltage regulation and load transient regulation, combined with low output voltage ripple, minimizing interference with RF circuits.