Optical fiber signal conversion circuit for 3,300V high-power IGBT driver

The invention proposes an optical fiber signal conversion circuit for a 3,300V high-power IGBT driver. The optical fiber signal conversion circuit comprises an upper bridge optical fiber signal conversion circuit, a lower bridge optical fiber signal conversion circuit and an upper and lower bridge driver interlocking circuit arranged between the upper bridge optical fiber signal conversion circuit and the lower bridge optical fiber signal conversion circuit, wherein in the upper bridge optical fiber signal conversion circuit, an upper bridge signal delay circuit performs delay on an upper bridge driver signal and transmits the upper bridge driver signal to an upper bridge amplifier circuit and a first optical transmitter in sequence, and the first optical transmitter converts the upper bridge driver signal into an optical signal and outputs the optical signal to an IGBT upper bridge driver circuit; in the lower bridge optical fiber signal conversion circuit, a lower bridge signal delay circuit performs delay