An optical disc recording apparatus records external data on an optical disc by using a semiconductor laser. The optical disc recording apparatus includes a circuit board. The circuit board is mounted with a power supply source and an MCM (multi chip module). The power supply source outputs at least one power voltage including a first voltage, and the MCM receives the at least one power voltage including the first voltage output from the power supply source. The MCM includes a first circuit and a second circuit. The first circuit includes at least one power supply circuit which generates at least one power voltage including a second voltage. The second circuit receives the at least one power voltage including the second voltage output from the at least one power supply circuit of the first circuit. An optical disc recording method is also described.