| 摘要 |
A voltage converting device includes first to third voltage converters, each including a capacitor, a pair of charge switches for charging the capacitor, a pair of first output switches for outputting a first output voltage through the capacitor, and a pair of second output switches for outputting a second output voltage through the capacitor. Via timing control of the switches, outputs of the first and second output voltages are substantially continuous and are prevented from floating. |
| 主权项 |
1. A voltage converting device comprising a first voltage converter, a second voltage converter, and a third voltage converter, each of said first voltage converter, said second voltage converter and said third voltage converter including:
a capacitor having a pair of capacitor terminals;
a pair of charge switches each having a first terminal and a second terminal, said first terminals of said charge switches being coupled respectively to said capacitor terminals, said second terminals of said charge switches being disposed to receive first and second charge voltages, respectively;a pair of first output switches each having a first terminal and a second terminal, said first terminals of said first output switches being coupled respectively to said capacitor terminals, said second terminal of one of said first output switches being disposed to receive a first input voltage, said second terminal of the other one of said first output switches being disposed to output a first output voltage; anda pair of second output switches each having a first terminal and a second terminal, said first terminals of said second output switches being coupled respectively to said capacitor terminals, said second terminal of one of said second output switches being disposed to receive a second input voltage, said second terminal of the other one of said second output switches being disposed to output a second output voltage; and a switch controller coupled electrically to said first voltage converter, said second voltage converter and said third voltage converter, wherein, for each of said first voltage converter, said second voltage converter and said third voltage converter, said switch controller controls said charge switches to make electrical connection simultaneously and to break electrical connection simultaneously, controls said first output switches to make electrical connection simultaneously and to break electrical connection simultaneously, and controls said second output switches to make electrical connection simultaneously and to break electrical connection simultaneously; wherein, for each of said first voltage converter, said second voltage converter and said third voltage converter, said switch controller controls said charge switches, said first output switches and said second output switches to make electrical connection in a predetermined sequence, and only one pair of said pairs of said charge switches, said first output switches and said second output switches make electrical connection at a time; wherein said switch controller controls said first output switches of said first voltage converter, said second voltage converter and said third voltage converter such that output of the first output voltage is substantially continuous; wherein said switch controller controls said second output switches of said first voltage converter, said second voltage converter and said third voltage converter such that output of the second output voltage is substantially continuous; and wherein said switch controller controls said first voltage converter, said second voltage converter and said third voltage converter in a manner that when said charge switches of one of said first voltage converter, said second voltage converter and said third voltage converter make electrical connection, said first output switches of another one of said first voltage converter, said second voltage converter and said third voltage converter make electrical connection, and said second output switches of yet another one of said first voltage converter, said second voltage converter and said third voltage converter make electrical connection. |
