JAJSIT3B March 2020 – April 2022 UCC27284
PRODUCTION DATA
The two inputs operate independent of each other and also independent of VDD. The independence allows for full control of two outputs compared to the gate drivers that have a single input. The overlap of inputs and therefore respective outputs allow the use in applications such as secondary side synchronous rectification. Whenever both the inputs are high, both the outputs shall be high as well. In other words, the outputs follow the input logic in all operating conditions except when the driver is disabled or when the driver is in UVLO mode. 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 feature. 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. The inputs have internal pulldown resistors with typical value of 250 kΩ. Thus, when the inputs are floating, the outputs are held low.