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PDF VNH7070AS Data sheet ( Hoja de datos )
| Número de pieza | VNH7070AS | |
| Descripción | Automotive fully integrated H-bridge motor driver | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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VNH7070AS
Automotive fully integrated H-bridge motor driver
Features
SO-16N
GAPGCFT00648
Type
VNH7070AS
RDS(on)
70 mΩ typ
(per leg)
Iout VCCmax
15 A 41 V
• Automotive qualified
• Output current: 15 A
• 3 V CMOS-compatible inputs
• Undervoltage shutdown
• Overvoltage clamp
• Thermal shutdown
• Cross-conduction protection
• Current and power limitation
• Very low standby power consumption
• Protection against loss of ground and loss of
VCC
• PWM operation up to 20 kHz
• CS diagnostic functions
– Analog motor current feedback
– Output short to ground detection
– Thermal shutdown indication
– OFF-state open-load detection
– Output short to VCC detection
• Output protected against short to ground and
short to VCC
• Standby Mode
• Half Bridge Operation
• Package: ECOPACK®
Datasheet - production data
Description
The device 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.
Both switches are designed using
STMicroelectronics’ well known and proven
proprietary VIPower® M0-7 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 SO-16N package on electrically
isolated lead-frames.
Moreover, its fully symmetrical mechanical design
allows superior manufacturability at board level.
The input signals INA and INB can directly
interface the microcontroller to select the motor
direction and the brake condition. A SEL0 pin is
available to address the information available on
the CS to the microcontroller. The CS pin allows
to monitor the motor current by delivering a
current proportional to the motor current value.
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
Order codes
Tube
Tape and reel
SO-16N
— VNH7070ASTR
October 2015
This is information on a product in full production.
DocID028088 Rev 3
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www.st.com
1 page  
VNH7070AS
Block diagram and pin description
1 Block diagram and pin description
Figure 1. Block diagram
V CC
LSA_OVERTEMPERATURE
HSA_OVERTEMPERATURE
POWER
LIMITATION
LSB_OVERTEMPERATURE
UV HSB_OVERTEMPERATURE
CLAMP HS A
OUT A
HS A
Open-load
OFF-state A
DRIVER
HS A
CURRENT
LIMITATION A
CLAMP LS A
1/K
LS A
DRIVER
LS A
OVERLOAD
DETECTOR A
GND A
IN A
CLAMP HS B
LOGIC
FAULT
DETECTION
DRIVER
HS B
CURRENT
LIMITATION B
1/K
CLAMP LS B
HS B
Open-load
OFF-state B
OUT B
MUX
CS SEL0 INB PWM
DRIVER
LS B
OVERLOAD
DETECTOR B
LS B
GND B
GAPGCFT01189
Table 2. Block description
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.
Undervoltage
Shuts down the device for battery voltage lower than 4 V.
High-side and low-side clamp voltage
Protect the high-side and the low-side switches from the
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
Ron 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.
DocID028088 Rev 3
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VNH7070AS
Electrical specifications
Table 9. Protections and diagnostics (VCC = 7 V up to 18 V; -40 °C < Tj < 150 °C)
Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
VUSD
VUSDreset
VUSDHyst
ILIM_H
ISD_LS
tSD_LS
VCL_HSD
VCL_LSD
TTSD_HS
TTR_HS
THYST_HS
TTSD_LS
VCL
VOL
IL(off2)
tDSTKON
Undervoltage shutdown
4
Undervoltage shutdown
reset
5
Undervolatge shutdown
Hysteresis
0.4
High-side current
limitation
15 22 30
Shutdown LS current
18 27 36
Time to shutdown for the INA = 5 V; INB = 0 V;
low-side
PWM = 5 V (see Figure 8)
5
High-side clamp voltage
(VCC to OUTA = 0 or
OUTB = 0)
IOUT = 100 mA; tclamp = 1 ms
38
46
Low-side clamp voltage
(OUTA = VCC or
OUTB = VCC to GND)
IOUT = 100 mA; tclamp = 1 ms 38
46
High-side thermal
shutdown temperature
INx = 2.1 V
150 175 200
High-side thermal reset
temperature
135
High-side thermal
hysteresis (TSD_HS - T
R_HS)
Low-side thermal
shutdown temperature
INx = 0 V
7
150 175 200
Total clamp voltage
(VCC to GND)
OFF-state open-load
voltage detection
threshold
OFF-state output sink
current
OFF-state diagnostic
delay time from falling
edge of INPUT (see
Figure 4)
IOUT = 100 mA; tclamp = 1 ms 38 46 52
INA = INB = 0 V; PWM = 0;
VSEL0 = 5 V for CHA;
VSEL0 = 0 V and within
td_stby for CHB
INA = INB = 0; VOUT = VOL;
PWM = 0 V;
VSEL0 = 5 V for CHA;
VSEL0 = 0 V and within
td_stby for CHB
2
-100
3
4
-15
INA = 5 V to 0 V; INB = 0;
VSEL0 = 5 V; PWM = 0;
IOUT = 0 A; VOUTA = 4 V
40 140 300
V
V
V
A
A
µs
V
V
°C
°C
°C
°C
V
V
µA
µs
DocID028088 Rev 3
11/38
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11 Page | ||
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