Sichuan Sunfor Light Co., Ltd

Wenbin Chen

Dongming Li

Wentao Long

Mian Yang

Zhengyong Feng

Ning Ning

Yongming Jia

Chunyi Feng

The present disclosure discloses a multipath current source switching device, including a switching control unit, N current paths, and N loads. Each current path is formed by a constant current source circuit and a switching circuit. One terminal of a first load is coupled to a load power supply, and the other terminal of the first load is coupled to an output terminal of a constant current source circuit of a first current path and one terminal of a second load; one terminal of an iload is coupled to the other terminal of an (i&#x2212;1)load and an output terminal of a constant current source circuit of an icurrent path; and the switching control unit controls an output current of a corresponding constant current source circuit through a corresponding switching circuit. When the circuits are switched, an output voltage of a switching circuit of a current path to be switched off is decreased to zero according to a preset voltage variation quantity, and an output voltage of a switching circuit of a current path to be switched on is increased to a highest operating voltage according to the preset voltage variation quantity, such that a current on a load does not exceed a preset current and is not zero during switching. N is an integer not less than 2, and i is equal to 2, 3, 4, . . . , N.

Multipath current source switching device

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Sichuan, China

Wenbin Chen