| CPC H02M 3/07 (2013.01) [H02M 1/0058 (2021.05); H02M 1/083 (2013.01)] | 8 Claims |
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1. A biphasic dickson switched capacitor converter, comprising a first branch, a second branch and an auxiliary circuit, wherein the auxiliary circuit is connected between the first branch and the second branch, the first branch and the second branch are connected in parallel to an output terminal of the biphasic dickson switched capacitor converter, and power transistors of the first branch and the second branch are primary power transistors;
wherein
the auxiliary circuit is configured to transfer an electric charge or electric charges on one of the first branch and the second branch to another of the first branch and the second branch during a dead time when the primary power transistors are turned off, so that voltage difference between both terminals of each of the primary power transistors become zero to, then the primary power transistors are turned on under a zero voltage respectively;
wherein the auxiliary circuit comprises a thirteenth power transistor, a fourteenth power transistor, a fifteenth power transistor, a sixteenth power transistor and an inductor;
a first terminal of the thirteenth power transistor is connected to a first node of the first branch, a second terminal of the thirteenth power transistor is connected to a first terminal of the inductor and a first terminal of the fourteenth power transistor respectively, and a second terminal of the fourteenth power transistor is grounded; and
a second terminal of the inductor is connected to a first terminal of the fifteenth power transistor and a first terminal of the sixteenth power transistor respectively, a second terminal of the fifteenth power transistor is grounded, and a second terminal of the sixteenth power transistor is connected to a second node of the second branch;
or,
wherein the auxiliary circuit comprises a thirteenth power transistor, a sixteenth power transistor, a first diode, a second diode and an inductor;
a first terminal of the thirteenth power transistor is connected to the first branch, a second terminal of the thirteenth power transistor is connected to a first terminal of the first diode and a first terminal of the inductor, a second terminal of the first diode is grounded; and
a second terminal of the inductor is connected to a first terminal of the second diode and a first terminal of the sixteenth power transistor, a second terminal of the second diode is grounded, and a second terminal of the sixteenth power transistor is connected to the second branch;
or,
wherein the auxiliary circuit includes a thirteenth power transistor, a sixteenth power transistor and inductor, a first terminal of the thirteenth power transistor is connected to the first branch, a second terminal of the thirteenth power transistor is connected to a first terminal of the inductor, a second terminal of the inductor is connected to a first terminal of the sixteenth power transistor, and a second terminal of the sixteenth power transistor is connected to the second branch.
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