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VNH3ASP30-E Datasheet(Hoja de datos) 3 Page - STMicroelectronics

No. de Pieza. VNH3ASP30-E
Descripción  AUTOMOTIVE FULLY INTEGRATED H-BRIDGE MOTOR DRIVER
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Fabricante  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
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VNH3ASP30-E
Table 3. Pin Definitions And Functions
Note: (*) GNDA and GNDB must be externally connected together.
Table 4. Pin Functions Description
Table 5. Block Descriptions (see Block Diagram)
Pin No
Symbol
Function
1, 25, 30
OUTA, Heat Slug2 Source of High-Side Switch A / Drain of Low-Side Switch A
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
6ENA/DIAGA
Status of High-Side and Low-Side Switches A; Open Drain Output
5INA
Clockwise Input
8
PWM
PWM Input
9
CS
Output of Current sense
11
INB
Counter Clockwise Input
10
ENB/DIAGB
Status of High-Side and Low-Side Switches B; Open Drain Output
15, 16, 21
OUTB, Heat Slug3 Source of High-Side Switch B / Drain of Low-Side Switch B
26, 27, 28
GNDA
Source of Low-Side Switch A (*)
18, 19, 20
GNDB
Source of Low-Side Switch B (*)
Name
Description
VCC
Battery connection.
GNDA
GNDB
Power grounds, must always be externally connected together.
OUTA
OUTB
Power connections to the motor.
INA
INB
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 VCC, 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
ENA/DIAGA
ENB/DIAGB
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
Drive the gate of the concerned switch to allow a proper RDS(on) for the
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.




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