UVLO (Under Voltage Lockout) is a common feature available in most gate drivers available today. UVLO ensures that we operate the part in the recommended operating supply voltage of the gate driver and more importantly operate at the expected operating voltage of the FETs they drive, to ensure high efficiency and prevent damage. There is a wide selection of IGBTs, SiC and MOS FETs that are available in the market. However, on basic analysis, it can be seen that in order to drive them optimally, UVLO thresholds can be standardized. This will help reduce variance in specification between gate drivers, helping customers with ease of pin to pin part compatibility, standardize their system-level design requirements and helping gate driver manufacturers with reduced IC design efforts. The goal of this proposal is to call for action from the industry to consider standardizing UVLO thresholds and accuracy based on our study of most popularly available FETs that gate drivers drive today.
