DC-DC converter systems

摘要

DC-DC converter systems are disclosed. DC-DC converter systems may include an input, an output, a resonant switched-capacitor DC-DC converter, and a second DC-DC converter. The resonant switched-capacitor DC-DC converter may include a first input side and a first output side. The second DC-DC converter may include a second input side and a second output side. The first input side may be connected to the input, the second input side may be connected to an input voltage, and the first and second output sides may be connected in series to the output. In some examples, the second DC-DC converter may be a buck-boost DC-DC converter.

主权项

1. A DC-DC converter system having an input and an output, the DC-DC converter system comprising:
a resonant switched-capacitor DC-DC converter having:
a first input side with positive and negative input terminals,a first output side with positive and negative output terminals,a positive leg connected from the positive input terminal to the positive output terminal and including a plurality of capacitors connected in series, and a first switch, anda negative leg connected from the negative input terminal to the negative output terminal and including a plurality of capacitors connected in series, and a second switch, andwherein the positive leg is connected to the negative input terminal through the second switch and the negative leg is connected to the positive input terminal through the first switch; and a second DC-DC converter separate from the resonant switched-capacitor DC-DC converter and having a second input side and a second output side, wherein the second input side is separate from the first input side; and wherein the first input side directly connects the resonant switched-capacitor DC-DC converter to the input, the second input side is connected to an input voltage, and the first and second output sides are connected in series to the output, such that an output voltage of the DC-DC converter system is a sum of the output voltage of the resonant switched-capacitor DC-DC converter between its positive and negative output terminals and the output voltage of the second DC-DC converter between its positive and negative output terminals.