4.2.4. Low-Side Outputs with Diagnostics and Fault
Protection
The VMM2404 low-side outputs have the ability to report many different fault
conditions, and are protected against short-circuit, overcurrent, and short-to-
ground faults.
Note: The VMM2404 diagnostic LEDs indicate the output's status.
4.2.4.1. Short-Circuit
Short circuit faults occur when a low-side output pin is shorted to battery. For
details on how to recover from a short circuit refer to the VMM2404 Platform
Framework API document distributed with the SDK.
4.2.4.2. Overcurrent
Overcurrent faults occur when a low-side output pin draws more current than the
specified overcurrent trip point.
When an overcurrent fault is detected, the hardware automatically turns off the
output.
The overcurrent trip time for low-side outputs is approximately 1 second.
Note: The VMM2404 can be programmed to automatically reset an output
from an overcurrent fault.
4.2.4.3. Short-to-Ground
Short-to-ground faults occur when a low-side output pin is connected to ground.
The low-side output circuit uses current on the output pin to determine if a short-
to-ground condition exists.
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