An isolated converter with switched capacitors can include: a first capacitor; a first group of switches coupled between two terminals of an input port, where the first group of switches is configured to selectively couple a first terminal of the first capacitor to one of a first terminal and a second terminal of the input port; a second group of switches coupled between two terminals of an output port, where the second group of switches is configured to selectively couple a second terminal of the first capacitor to one of a first terminal and a second terminal of the output port; and a second capacitor coupled between one of the first and second terminals of the input port and one of the first and second terminals of the output port.