A power circuitry with a thermionic cooling system is provided. The system
includes a voltage regulator and a heat rectifying device to cool the
voltage regulator. The heat rectifying device includes a heat collector
and a heat barrier, formed between the voltage regulator and the heat
collector. An auxiliary voltage generator enables the electrons of the
voltage regulator to tunnel onto the heat collector through the heat
barrier. The voltage regulator may include a shared substrate and power
transistors, generating a regulated voltage. In some embodiments the
controller keeps a temperature in a preselected range by controlling the
power transistors, the auxiliary voltage generator, and a fan. In some
embodiments a load is integrated together with the thermionic cooling
system so that the load itself can be cooled by the heat rectifying
device.
