US Patent 9923528 Adaptive boost supply with slope control

An apparatus includes a first circuit configured to generate a boost voltage, and a second circuit to control a slope of a magnitude of the boost voltage when the magnitude of the boost voltage is reduced. The first circuit is configured to generate the boost voltage having the magnitude equal to a first voltage when a control signal is in a first state, and reduce the magnitude of the boost voltage when the control signal is in a second state and the magnitude of the boost voltage is greater than a second voltage which is less than the first voltage. A method of providing a boost voltage includes controlling a slope of a magnitude of the boost voltage when the magnitude of the boost voltage is decreased.