The TPS7H60x5 can be configured to have input interlock protection in independent input mode (IIM). To activate the input interlock protection in IIM, DHL must be connected to 5V while DLH has a resistor (valued between 100kΩ and 220kΩ) connected between the pin and AGND. This protection is intended to improve the robustness and reliability of the power stage with which the driver is being used by preventing shoot-through of the GaN FETs in a half-bridge configuration. In any instance when the protection is enabled and both inputs are logic high, the internal logic turns both of the outputs off. Both outputs remain off until one of the inputs goes low, in which case the outputs follow the input logic. There is no fixed time deglitching for this feature in order to not impact the propagation delay and dead time of the driver. Small filters at the inputs of the driver can be utilized to improve robustness in noise prone applications.

Figure 8-5 Input Interlock Protection in Independent Input Mode