Electronic multiplying driving power supply of electron multiplying charge coupled device (EMCCD)

An electronic multiplying driving power supply of an electron multiplying charge coupled device (EMCCD) relates to the technology of a power supply of a CCD and resolves the problem that the existing direct current (DC)-DC power supply is large in ripple wave, a working clock is not synchronous with a reading clock of the EMCCD, power-on initial state control does not exist and analog linear power supply efficiency is low. The power supply adopts two-stage voltage adjustment of DC-DC conversion and analog conversion, achieves high efficiency by enabling DC-DC output and analog output to keep constant, utilizes a ripple wave restraining function in a low voltage difference power supply chip to achieve low ripple wave output, adopts combination of a digital to analog converter (DAC) and a linear optical coupler to achieve digital voltage adjustment, is capable of achieving isolation of a control portion and a power supply portion, adopts a small transformer to achieve synchronization of DC-DC power supply working frequency and reading clock frequency, reduces interference of a switch power supply in output images, outputs high voltage required by multiplying in the pixel reading stage and outputs low voltage satisfying load transfer in the non-reading stage to further reduce power consumption.