The UCC27624 device features low quiescent I_DD currents. The typical operating supply current in UVLO state and fully-on state (under static and switching conditions) are summarized in the Electrical Characteristics table. The lowest quiescent current (I_DD) is achieved when the device is fully on and the outputs are in a static state (DC high or DC low). During this state, all of the internal logic circuits of the device are fully operational. The total supply current is the sum of the quiescent I_DD current, the average I_OUT current because of switching, and any current related to pullup resistors on the enable pins. Knowing the operating switching frequency (f_SW) and the MOSFET gate charge (Q_G) at the drive voltage being used, the average I_OUT current can be calculated as product of Q_G and f_SW.

Typical Characteristics provides a complete characterization of the I_DD current as a function of switching frequency at different V_DD bias voltages. The linear variation and close correlation with the theoretical value of the average I_OUT indicate a negligible shoot-through inside the gate driver device, displaying its high-speed characteristics.