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VNH3ASP30-E

Table 3. Pin Definitions And Functions

Table 4. Pin Functions Description

Table 5. Block Descriptions (see Block Diagram)

Pin No

Symbol

Function

1, 25, 30

2,4,7,12,14,17, 22, 24,29 NC

Not connected

3, 13, 23

VCC, Heat Slug1

Drain of High-Side Switches and Power Supply Voltage

Status of High-Side and Low-Side Switches A; Open Drain Output

Clockwise Input

8

PWM

PWM Input

9

CS

Output of Current sense

11

Counter Clockwise Input

10

Status of High-Side and Low-Side Switches B; Open Drain Output

15, 16, 21

26, 27, 28

Source of Low-Side Switch A (*)

18, 19, 20

Source of Low-Side Switch B (*)

Name

Description

Battery connection.

Power grounds, must always be externally connected together.

Power connections to the motor.

Voltage controlled input pins with hysteresis, CMOS compatible. These two pins control the state of

counterclockwise).

PWM

Voltage controlled input pin with hysteresis, CMOS compatible.Gates of Low-Side FETS get

modulated by the PWM signal during their ON phase allowing speed control of the motor

Open drain bidirectional logic pins.These pins must be connected to an external pull up resistor. When

externally pulled low, they disable half-bridge A or B. In case of fault detection (thermal shutdown of

a High-Side FET or excessive ON state voltage drop across a Low-Side FET), these pins are pulled

low by the device (see truth table in fault condition).

CS

Analog current sense output. This output sources a current proportional to the motor current. The

information can be read back as an analog voltage across an external resistor.

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.

OVERVOLTAGE + UNDERVOLTAGE

Shut-down the device outside the range [5.5V..16V] for the battery

voltage.

HIGH SIDE AND LOW SIDE CLAMP

VOLTAGE

Protect the High Side and the Low Side switches from the high voltage

on the battery line in all configuration for the motor.

HIGH SIDE AND LOW SIDE DRIVER

leg of the bridge.

LINEAR CURRENT LIMITER

Limits the motor current, by reducing the High Side Switch gate-source

voltage when short-circuit to ground occurs.

OVERTEMPERATURE PROTECTION

In case of short-circuit with the increase of the junction’s temperature,

shuts-down the concerned High Side to prevent its degradation and to

protect the die.

FAULT DETECTION

Signalize an abnormal behavior of the switches in the half-bridge A or

B by pulling low the concerned ENx/DIAGx pin.