The UCC27444-Q1 device is the dual-channel, low-side, high-speed, gate driver devices featuring 4-A source and sink current capability, fast switching characteristics, and a host of other features. UCC27444-Q1 Features and Benefits details the advantages of the gate driver's features, which combine to ensure efficient, robust, and reliable operation in high-frequency switching power circuits. The robust inputs of UCC27444-Q1 can handle –5 V, ensuring reliable operation in noisy environments. The driver has good transient handling capability on its output due to its reverse current handling, as well as rail-to-rail output drive, and a small propagation delay (typically 18 ns). With this built-in robustness, the UCC27444-Q1 device can also be directly connected to a gate drive transformer.

The input threshold of UCC27444-Q1 is compatible with TTL low-voltage logic, which is fixed and independent of VDD supply voltage. The driver can also work with CMOS-based controllers as long as the threshold requirement is met.

Each channel has an enable pin, ENx, with a fixed TTL compatible threshold. The ENx pins are internally pulled up. Pulling ENx low disables the corresponding channel, while leaving ENx open provides normal operation. The ENx pins can be used as an additional input with the same performance as the INx pins.