2.2.4 Gate Driver

The Gate Driver is the analog output coming from the analog system. You can use it to drive the gate of an external MOSFET on or off. The Gate Driver is designed to work with external MOSFETs as a configurable current sink or source.

The figure below shows the Gate Driver dialog box.

Figure 2-19. Output Gate Driver Dialog Box
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Gate Driver Configuration Options
  • Gate Driver Polarity: Indicates the type of MOSFET controlled by the Gate Driver (NMOS or PMOS). PMOS devices control a positive voltage supply, while NMOS devices control a negative voltage supply. The AG pad can operate with either P‑channel devices (pulling down to ground) or N‑channel devices (pulling up to ground).
  • Signal Name: Specifies the name of the signal assigned to this Gate Driver. This name appears as the final port name in the generated system.
  • Enable Name: Specifies the name of the signal used to enable the Gate Driver.
  • Source Current: Specifies the amount of current the Gate Driver is expected to source. The Gate Driver supports selectable current drive levels of 1 µA, 3 µA, 10 µA, 30 µA, and 25 mA.