Controller power supply circuit and controller

The invention discloses a controller power supply circuit and a controller, relates to the technical field of power supply, and is applied to the controller, the controller comprises a power panel and a plurality of functional boards, and the controller power supply circuit comprises a power module arranged on the power panel and used for outputting at least one target voltage; and the multiple voltage conversion modules are arranged on the multiple function boards in a one-to-one correspondence mode, and the voltage conversion modules are connected with the power module and used for conducting voltage conversion on the target voltage and supplying power to the corresponding function boards. According to the invention, for controllers with different control requirements, power supply scheme design of all function boards can be realized only by designing the power supply module on the power supply board and designing the voltage conversion module on the function board once, and when the requirements of the fun