Abstract：In the application of floating ground drive of server power supply, the drive integrated circuit (IC) basically replaces the drive line built by discrete devices. Under special working conditions, it is found that the continuous high transient impulse current will cause the internal bootstrap diode of the IC to burn out and open the circuit, resulting in abnormal driving and power supply damage. Therefore, the use of partial drive IC may not be applicable under special conditions. This paper analyzes the abnormal problem of the drive IC for the artificial intelligence (AI) server power supply under harsh conditions. On the basis of the drive IC, the bypass shunt auxiliary diode circuit is added to ensure the normal operation of various drive ICs under harsh conditions, and further improve the overall stability of the system and the diversity of material substitution.
2024, Vol. 25 
