Datasheet

VNH5180A-E Block diagram and pin description
Doc ID 17074 Rev 6 5/31
1 Block diagram and pin description
Figure 1. Block diagram
Table 2. Block description
Name Description
Logic control
Allows the turn-on and the turn-off of the high-side and the
low-side switches according to the truth table.
Undervoltage Shuts down the device for battery voltage lower than 5V.
High-side and low-side clamp voltage
Protect the high-side and the low-side switches from the
high voltage on the battery line.
High-side and low-side driver
Drive the gate of the concerned switch to allow a proper
R
DS(on)
for the leg of the bridge.
Current limitation Limits the motor current in case of short circuit.
High-side and low-side overtemperature
protection
In case of short-circuit with the increase of the junction
temperature, it shuts down the concerned driver to prevent
degradation and to protect the die.
Low-side overload detector
Detects when low side current exceeds shutdown current
and latches off the concerned Low side.
Fault detection
Signalizes the abnormal behaviour of the switch (output
shorted to ground or output shorted to battery) by pulling
down the concerned ENx/DIAGx pin.
Power limitation
Limits the power dissipation of the high-side driver inside
safe range in case of short to ground condition.
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