Research on thermal design of high specific power constant current source based on ceramic substrate

In consideration of the stringent requirements of semiconductor lasers on the output current quality of DC-DC converters, this paper proposes a high-specific-power constant current power supply integrated with ceramic substrates to address the thermal management challenges associated with high-power devices in high-frequency and high-power converters. The experimental results demonstrate that the efficiency of the constant current source in this design can exceed 98%, with the thermal equilibrium temperature maintained below 70°C, thereby validating the rationality and feasibility of this design.