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VNH3SP30 Folha de dados(PDF) 3 Page - STMicroelectronics

Nome de Peças VNH3SP30
Descrição Electrónicos  FULLY INTEGRATED H-BRIDGE MOTOR DRIVER
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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VNH3SP30
PIN FUNCTIONS DESCRIPTION
BLOCK DESCRIPTIONS
(see Electrical Block Diagram page 4)
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).
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..36V] for the battery
voltage.
HIGH SIDE CLAMP VOLTAGE
Protect the High-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 good RDS(on) for the
leg of the bridge.
LINEAR CURRENT LIMITER
In case of short circuit for the High-Side switch, limits the motor current
by reducing its electrical characteristics.
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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