7.4.2 Eco-mode Operation

When the TPS563240 is in the normal CCM operating mode and the switch current falls to 0 A, the TPS563240 begins operating in pulse skipping Eco-mode. Each switching cycle is followed by a period of energy saving sleep time. The sleep time ends when the VFB voltage falls below reference voltage. As the output current decreases, the sleep time between switching pulses increases.