Light-load efficiency and low Iq

This training explores how quiescent current (Iq) impacts DC/DC converter efficiency in low-power electronics, a critical but often overlooked factor in battery-powered devices, ultra-low-power applications, and standby/light-load conditions. It covers the key loss contributors, conduction losses, switching losses, PFM operation, and quiescent current, followed by an in-depth look at low Iq and the three key specifications, why it matters, and the challenges in achieving it.