To receive the best efficiency possible at light loads, the user can select the Power Save Mode Operation (Auto PFM/PWM) mode. This mode increases the efficiency by skipping switching pulses and reducing the device’s current consumption and switching losses. Alternately, Forced Pulse Width Modulation (FPWM) forces the device to operate at nearly fixed frequency across load, this has some efficiency impact at light load but the user can easily predict the operating frequency and set filters as needed. The user can choose between these modes using the MODE/S-CONF pin discussed previously.