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PDF VNH5050A-E Data sheet ( Hoja de datos )

Número de pieza VNH5050A-E
Descripción Automotive fully integrated H-bridge motor driver
Fabricantes STMicroelectronics 
Logotipo STMicroelectronics Logotipo



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VNH5050A-E
Automotive fully integrated H-bridge motor driver
Features
Type
RDS(on)
Iout Vccmax
VNH5050A-E
50 mΩ max
(per leg)
30 A 41 V
Output current: 30 A
3 V CMOS compatible inputs
Undervoltage and overvoltage shutdown
Overvoltage clamp
Thermal shutdown
Cross-conduction protection
Current and power limitation
Very low standby power consumption
PWM operation up to 20 KHz
Protection against loss of ground and loss of
VCC
Current sense output proportional to motor
current
Output protected against short to ground and
short to VCC
Package: ECOPACK®
Description
The VNH5050A-E is a full bridge motor driver
intended for a wide range of automotive
applications. The device incorporates a dual
monolithic high-side driver and two low-side
switches. All switches are designed using
STMicroelectronics® well known and proven
PowerSSO-36 TP
proprietary VIPower® M0 technology that allows
to efficiently integrate on the same die a true
Power MOSFET with an intelligent
signal/protection circuitry. The three dies are
assembled in a PowerSSO-36 TP package on
electrically isolated lead frames. This package,
specifically designed for the harsh automotive
environment offers improved thermal
performance thanks to exposed die pads.
Moreover, its fully symmetrical mechanical design
allows superior manufacturability at board level.
The input signals INA and INB can directly
interface to the microcontroller to select the motor
direction and the brake condition. The DIAGA/ENA
or DIAGB/ENB, when connected to an external
pull-up resistor, enables one leg of the bridge.
Each DIAGA/ENA provides a digital diagnostic
feedback signal as well. The normal operating
condition is explained in the truth table. The CS
pin allows monitoring the motor current by
delivering a current proportional to its value when
CS_DIS pin is driven low or left open. When
CS_DIS is driven high, CS pin is in high
impedance condition. The PWM, up to 20 KHz,
allows to control the speed of the motor in all
possible conditions. In all cases, a low level state
on the PWM pin turns off both the LSA and LSB
switches.
Table 1. Device summary
Package
Tube
Order codes
Tape and reel
PowerSSO-36 TP
VNH5050A-E
VNH5050ATR-E
December 2011
Doc ID 16009 Rev 10
1/33
www.st.com
1

1 page




VNH5050A-E pdf
VNH5050A-E
Block diagram and pin description
1 Block diagram and pin description
Figure 1.
Block diagram
6##
VCC
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Table 2. Block description
Name
Description
Logic control
Undervoltage/overvoltage
Allows the turn-on and the turn-off of the high-side and the
low-side switches according to the truth table.
Shuts down the device for battery voltage outside the range
(4,5...24V).
High-side and low-side clamp voltage
Protect the high-side and the low-side switches from high
voltage on the battery line.
High-side and low-side driver
Current limitation
Drive the gate of the concerned switch to allow a proper
RDS(on) for the leg of the bridge.
Limits the motor current in case of short circuit.
High-side and low-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.
Low-side overload detector
Detects when low-side current exceeds shutdown current
and latches off the concerned low-side.
Fault detection
Power limitation
Signalizes an abnormal condition of the switch (output
shorted to ground or output shorted to battery) by pulling
down the concerned ENx/DIAGx pin.
Limits the power dissipation of the high-side driver inside
safe range in case of short to ground condition.
Doc ID 16009 Rev 10
5/33

5 Page





VNH5050A-E arduino
VNH5050A-E
Electrical specifications
Table 9. Logic inputs (INA, INB, ENA, ENB, PWM, CS_DIS)
Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
VIL Input low level voltage
VIH Input high level voltage
VIHYST Input hysteresis voltage
VICL Input clamp voltage
IINL
IINH
VDIAG
Input current
Input current
Enable output low level
voltage
Normal operation
(DIAGX/ENX pin acts as an
input pin)
0.9
Normal operation
(DIAGX/ENX pin acts as an
input pin)
2.1
Normal operation
(DIAGX/ENX pin acts as an 0.15
input pin)
IIN = 1 mA
5.5 6.3 7.5
IIN = -1 mA
-1.0 -0.7 -0.3
VIN = 0.9 V
1
VIN = 2.1 V
10
Fault operation
(DIAGX/ENX pin acts as an
output pin); IEN = 1 mA
0.4
V
V
V
V
V
µA
µA
V
Table 10. Switching (VCC = 13 V, RLOAD = 1.5 Ω)
Symbol
Parameter
Test conditions
f
td(on)
td(off)
tr
tf
tDEL
trr
PWM frequency
Turn-on delay time
Input rise time < 1µs
(see Figure 6)
Turn-off delay time
Input rise time < 1µs
(see Figure 6)
Rise time
See Figure 5
Fall time
See Figure 5
Delay time during change
of operating mode
See Figure 4
High-side free wheeling
diode reverse recovery
time
See Figure 7
Min. Typ. Max. Unit
0 20 kHz
250 µs
250 µs
1 2 µs
1 2 µs
200 400 1600 µs
100 ns
Table 11. Protections and diagnostics
Symbol
Parameter
Test conditions
VUSD
VUSDhyst
VOV
ILIM_H
Undervoltage shutdown
Undervoltage shutdown
hysteresis
VCC overvoltage shutdown
High-side current limitation
Min. Typ. Max. Unit
35V
0.5 V
24 27 30
30 42 60
V
A
Doc ID 16009 Rev 10
11/33

11 Page







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