SLUSE21B June 2020 – April 2022 UCC27288
PRODUCTION DATA
The two inputs operate independent of each other. The two inputs can overlap and output shall follow the input signals. The independence allows for full control of two outputs compared to the gate drivers that have a single input. There is no fixed time de-glitch filter implemented in the device and therefore propagation delay and delay matching are not sacrificed. In other words, there is no built-in dead-time. If the dead time between two outputs is desired then that shall be programmed through the micro-controller. If noise on the input signal is expected in a way that could cause the inputs to overlap then the outputs shall follow the inputs and shoot-through may occur. To avoid such situation small input filter shall be implemented at the front of the gate driver inputs, HI and LI. Because the inputs are independent of supply voltage, they can be connected to outputs of either digital controller or analog controller. Inputs can accept wide slew rate signals and input can withstand negative voltage to increase the robustness. Small filter at the inputs of the driver further improves system robustness in noise prone applications, as mentioned earlier. The inputs have internal pull down resistors with typical value of 250 kΩ. Thus, when the inputs are floating, the outputs are held low.