CPC H02M 1/007 (2021.05) [H02M 1/0043 (2021.05); H02M 7/49 (2013.01); H02M 1/0003 (2021.05)] | 20 Claims |
1. A cascade circuit, comprising:
a) N power conversion units connected in series between two ports of a power supply, wherein N is a positive integer greater than or equal to 2;
b) a controller connected to one of the N power conversion units, and being configured to send a signal to be transmitted through the connected power conversion unit;
c) wherein each of the power conversion units is configured to send the signal to be transmitted to a next-stage power conversion unit when the each of the power conversion unit shares a reference voltage with the adjacent next-stage power conversion unit; and
d) wherein the signal to be transmitted is controlled to be transmitted from a previous-stage power conversion unit to a next-stage power conversion unit in sequence until the signal to be transmitted is received by all of the N power conversion units.
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