Systems, methods, and devices for improved cooling of an implantable blood pump are disclosed herein. The implantable blood pump can include: a pump housing defining an internal volume and including a wall defining a blood flow conduit extending through the pump housing a rotor including a magnet and located within the blood flow conduit a magnetic core located in the internal volume and extending circumferentially around the blood flow conduit and the rotor, which magnetic core terminates proximate to the wall a controller located in the internal volume and a thermal conductor contacting and preferentially thermally connecting the controller and the magnetic core, wherein the thermal conductor is electrically non-conductive.
