To prevent undesired performance under no-load and near no-load conditions, the UCC28070A zero-power detection comparator is designed to disable both GDA and GDB outputs in the event V_VAO voltage falls below 0.75V. The 150mV of hysteresis ensures that the outputs remain disabled until V_VAO has nearly risen back into the linear range of the multiplier (V_VAO ≥ 0.9V).