Datasheet

VNH5180A-E Block diagram and pin description
Doc ID 17074 Rev 6 7/31
20 CS_DIS
Active high CMOS compatible pin to disable current sense
pin.
21 EN
B /DIAG B
Status of high-side and low-side switches b;
open drain output.
22 IN
B Counter clockwise input.
25, 26, 27, 29, 35 OUT
B
,
Heat Slug3 Source of high-side switch B / drain of low-side switch B.
30, 31, 33, 34 GND B Source of low-side switch B.
2, 8, 10, 11, 12 OUT
A,
Heat Slug2 Source of high-side switch A / drain of low-side switch A.
3, 4, 6, 7 GND
A Source of low-side switch A.
Table 5. Pin functions description
Name Description
V
CC
Battery connection.
GND Power ground.
OUT
A
OUT
B
Power connections to the motor.
IN
A
IN
B
Voltage controlled input pins with hysteresis, CMOS compatible. These two pins
control the state of the bridge in normal operation according to the truth table (brake to
V
CC
, Brake to GND, clockwise and 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.
EN
A
/DIAG
A
EN
B
/DIAG
B
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 Table 14: Truth
table in fault conditions (detected on OUTA)).
CS
Analog current sense output. This output delivers a current proportional to the motor
current if CS_DIS is low or left open. The information can be read back as an analog
voltage across an external resistor.
CS_DIS Active high CMOS compatible pin to disable the current sense pin.
Table 4. Pin definitions and functions (continued)
Pin N° Symbol Function