VNHD7012AY datasheet(6/43 Pages) STMICROELECTRONICS

6 / 43 page

Block diagram and pin description

VNHD7012AY

6/43

DS11484 Rev 5

Block diagram and pin description

Figure 1. Block diagram

Table 1. 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 (US)

Shuts down the device for battery voltage below (4 V).

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 Ron

for the leg of the bridge.

Current limitation

Limits the motor current in case of short circuit.

High-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.

VDS_MONITORING

Protection of LSD powers against short to battery failure

VREG

Internal voltage regulator that provides the supply for the

gates of the external low-side switches

Fault detection

Signalizes an abnormal condition of the power stage (output

shorted to ground or output shorted to battery) by a feedback

on the MultiSense

VNHD7012AY Datasheet(PDF) 6 Page - STMicroelectronics