I'm using the LT3652HV for MPPT-based charging. The circuit works well when the input power is applied before the load is connected. However, in testing, I noticed that if a load is already connected when the input power is applied, the LT3652HV fails to start — unless the load is very light (less than 0.27 A). With higher load currents (0.5–1 A), the output voltage never ramps up and the charger doesn't begin switching.
Does the LT3652HV support startup under load?
What’s the recommended way to ensure reliable startup with a load above 0.3A already present?