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VNH7070AS PDF Datasheet - Automotive fully integrated H-bridge motor driver - STMicroelectronics

Part Number VNH7070AS
Description Automotive fully integrated H-bridge motor driver
Manufacturers STMicroelectronics 
Logo STMicroelectronics Logo 
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VNH7070AS datasheet, circuit
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
1/38
www.st.com

1 page

VNH7070AS pdf, schematic
Contents
Contents
VNH7070AS
1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.1 Reverse battery protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.2 OFF-state open-load detection – External circuitry dimensioning . . . . . . 23
3.3 Immunity against transient electrical disturbances . . . . . . . . . . . . . . . . . . 24
3.4 Device configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4 Package and PCB thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.1 SO16-N thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.2 Package thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.2.1 Thermal characterization in steady state conditions . . . . . . . . . . . . . . . 28
4.2.2 Thermal characterization during transients . . . . . . . . . . . . . . . . . . . . . . 29
5 Package and packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.1 SO-16N mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.2 SO-16N packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.3 SO-16N marking information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
2/38 DocID028088 Rev 3

2 Page

VNH7070AS equivalent
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
5/38
37

5 Page

VNH7070AS diode, scr
VNH7070AS
Electrical specifications
2.3
Electrical characteristics
Values specified in this section are for VCC = 7 V up to 28 V; -40 °C < Tj < 150 °C, unless
otherwise specified.
Symbol
Parameter
Table 6. Power section
Test conditions
Min. Typ. Max. Unit
VCC
Operating supply
voltage
4 28 V
IS Supply current
Off-state - standby; INA = INB = 0;
SEL0 = 0; PWM = 0; Tj = 25 °C;
VCC = 13 V
Off-state - standby; INA = INB = 0;
SEL0 = 0; PWM = 0; VCC = 13 V;
Tj = 85 °C
Off-state - standby; INA = INB = 0;
SEL0 = 0; PWM = 0; VCC = 13 V;
Tj = 125 °C
Off-state (no standby);
INA = INB = 0; SEL0 = 5 V;
PWM = 0
1 µA
1 µA
3 µA
2 4 mA
On-state: INA or INB = 5 V;
PWM = 0 V or PWM=5 V;
SEL0 = X
3.5 6 mA
tD_sdby(1)
Standby mode blanking
time
VCC =13 V;
INA = INB= PMW = 0 V;
VSEL0 from 5 V to 0 V
0.2 1 1.8 ms
RONHS
Static high-side
resistance
IOUT = 3.5 A; Tj = 25°C
IOUT = 3.5 A; Tj = -40 to 150°C
42 mΩ
85 mΩ
RONLS
Static low-side
resistance
IOUT = 3.5 A; Tj = 25°C
IOUT = 3.5 A; Tj = -40°C to 150°C
30 mΩ
60 mΩ
Vf
Free-wheeling diode
forward voltage
IOUT = -3.5 A; Tj = 150°C
0.7 0.9 V
IL(off)
IL(off_h)
Off-state output current
of one leg
INA = INB = 0; PWM = 0;
VCC = 13 V; Tj = 25 °C
INA = INB = 0; PWM = 0;
VCC = 13 V; Tj = 125 °C
Off-state output current
of one leg with other
HSD on
INA = 0; INB = 5 V; PWM = 0;
VCC = 13 V
0
0
20
0.5 µA
3 µA
60 µA
1. To power on the device from the standby, it is recommended to:
— toggle INA or INB from 0 to 1 first to come out from STBY mode
— toggle PWM from 0 to 1 with a delay of 20 µs
this avoids any over-stress on the device in case of existing short-to-battery.
DocID028088 Rev 3
9/38
37

9 Page

VNH7070AS transistor, igbt
VNH7070AS
Electrical specifications
Figure 14. OUT shorted to Vcc and short clearing
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DocID028088 Rev 3
21/38
37

21 Page





Information Total 30 Pages
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