Patent ID: 9246382
Filing Date: 2016-01-26
CPC Classification: H02M

Claim Text:
1. An apparatus comprising: an input node to receive a first voltage; an output node to provide an output voltage; and a charge pump to generate the output voltage based on the first voltage, the charge pump including a control node to receive a control signal generated by a generator that includes a node to receive a supply voltage not based on the output voltage for controlling switches of the charge pump such that the output voltage includes a value greater than a value of the first voltage, wherein the control signal includes a level corresponding to a second voltage having a value greater than the value of the output voltage, and a duty cycle of the control signal is changed if the value of the output voltage exceeds one of a lower limit and an upper limit in order to maintain the value of the output voltage within the lower limit and the upper limit, wherein the charge pump includes capacitors coupled in series between an additional node and ground, wherein only one of the capacitors is coupled to the output node through one of the switches.