VN7050AJ, VN7050AS
Datasheet
High-side driver with MultiSense analog feedback for automotive applications
Features
Max transient supply voltage
VCC
40 V
Operating voltage range
VCC
4 to 28 V
Typ. on-state resistance (per Ch)
RON
50 mΩ
Current limitation (typ)
ILIMH
30 A
Standby current (max)
ISTBY
0.5 µA
•
•
•
Product status link
VN7050AJ
VN7050AS
•
AEC-Q100 qualified
General
–
Single channel smart high-side driver with MultiSense analog feedback
–
Very low standby current
–
Compatible with 3 V and 5 V CMOS outputs
MultiSense diagnostic functions
–
Multiplexed analog feedback of: load current with high precision
proportional current mirror, VCC supply voltage and TCHIP device
temperature
–
Overload and short to ground (power limitation) indication
–
Thermal shutdown indication
–
OFF-state open-load detection
–
Output short to VCC detection
–
Sense enable/disable
Protections
–
Undervoltage shutdown
–
Overvoltage clamp
–
Load current limitation
–
Self limiting of fast thermal transients
–
Configurable latch-off on overtemperature or power limitation with
dedicated fault reset pin
–
Loss of ground and loss of VCC
–
–
Reverse battery with external components
Electrostatic discharge protection
Applications
•
•
•
All types of Automotive resistive, inductive and capacitive loads
Specially intended for Automotive Turn Indicators (up to P27W or SAE1156 or
LED Rear Combinations)
Protected supply for ADAS systems: radars and sensors
Description
The devices are single channel high-side drivers manufactured using ST proprietary
VIPower M0-7 technology and housed in PowerSSO-16 and SO-8 packages. The
DS10826 - Rev 5 - April 2019
For further information contact your local STMicroelectronics sales office.
www.st.com
VN7050AJ, VN7050AS
devices are designed to drive 12 V automotive grounded loads through a 3 V and 5 V
CMOS-compatible interface, and to provide protection and diagnostics.
The devices integrate advanced protective functions such as load current limitation,
overload active management by power limitation and overtemperature shutdown with
configurable latch-off.
A FaultRST pin unlatches the output in case of fault or disables the latch-off
functionality.
A dedicated multifunction multiplexed analog output pin delivers sophisticated
diagnostic functions including high precision proportional load current sense, supply
voltage feedback and chip temperature sense, in addition to the detection of overload
and short circuit to ground, short to VCC and OFF-state open-load.
A sense enable pin allows OFF-state diagnosis to be disabled during the module lowpower mode as well as external sense resistor sharing among similar devices.
DS10826 - Rev 5
page 2/45
VN7050AJ, VN7050AS
Block diagram and pin description
1
Block diagram and pin description
Figure 1. Block diagram
VCC
Internal supply
VCC – GND
Clamp
Undervoltage
shut-down
Control & Diagnostic
VCC – OUT
Clamp
FaultRST
INPUT
Gate Driver
SEL1
T
VCC
VON
Limitation
SEL0
Current
Limitation
MultiSense
MUX
SEn
Power Limitation
Overtemperature
T
Short to VCC
Open-Load in OFF
Current
Sense
Fault
GND
VSENSEH
OUTPUT
GAPGCFT00328
Table 1. Pin functions
Name
VCC
OUTPUT
GND
INPUT
MultiSense
Battery connection.
Power outputs.
Ground connection. Must be reverse battery protected by an external diode / resistor network.
Voltage controlled input pin with hysteresis, compatible with 3 V and 5 V CMOS outputs. It controls output switch
state.
Multiplexed analog sense output pin; it delivers a current proportional to the selected diagnostic: load current,
supply voltage or chip temperature.
SEn
Active high compatible with 3 V and 5 V CMOS outputs pin; it enables the MultiSense diagnostic pin.
SEL0,1
Active high compatible with 3 V and 5 V CMOS outputs pin; they address the MultiSense multiplexer.
FaultRST
DS10826 - Rev 5
Function
Active low compatible with 3 V and 5 V CMOS outputs pin; it unlatches the output in case of fault; If kept low, sets
the outputs in auto-restart mode.
page 3/45
VN7050AJ, VN7050AS
Block diagram and pin description
Figure 2. Configuration diagram (top view)
PowerSSO-16
INPUT
FaultRST
SEn
GND
SEL0
SEL1
MultiSense
N.C.
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
OUTPUT
OUTPUT
OUTPUT
OUTPUT
N.C.
N.C.
N.C.
N.C.
TAB = V CC
SO-8
INPUT
SEn
GND
MultiSense
1
2
3
4
8
7
6
5
VCC
OUTPUT
OUTPUT
VCC
GAPG2601151129CFT
Table 2. Suggested connections for unused and not connected pins
Connection / pin
MultiSense
N.C.
Output
Input
SEn, SELx, FaultRST
Floating
Not allowed
X (1)
X
X
X
To ground
Through 1 kΩ resistor
X
Not allowed
Through 15 kΩ resistor
Through 15 kΩ resistor
1. X: do not care.
DS10826 - Rev 5
page 4/45
VN7050AJ, VN7050AS
Electrical specification
2
Electrical specification
Figure 3. Current and voltage conventions
IS
VCC
FaultRST
I SEn
I OUT
OUTPUT 0,1
CS
SEL 0
VSEn
V OUT
I SENSE
SE n
I SEL
VFR
VCC
VFn
I FR
VSENSE
I IN
VSEL
INPUT 0,1
VIN
I GND
GADG2203170950PS
Note:
VF = VOUT - VCC during reverse battery condition.
2.1
Absolute maximum ratings
Stressing the device above the rating listed in Table 3. Absolute maximum ratings may cause permanent damage
to the device. These are stress ratings only and operation of the device at these or any other conditions above
those indicated in the operating sections of this specification is not implied. Exposure to the conditions in table
below for extended periods may affect device reliability.
Table 3. Absolute maximum ratings
Symbol Parameter
Unit
VCC
DC supply voltage
38
-VCC
Reverse DC supply voltage
0.3
VCCPK
Maximum transient supply voltage (ISO 16750-2:2010 Test B clamped to 40 V; RL = 4 Ω)
40
V
VCCJS
Maximum jump start voltage for single pulse short circuit protection
28
V
-IGND
DC reverse ground pin current
200
mA
IOUT
OUTPUT DC output current
Internally limited
-IOUT
Reverse DC output current
10
IIN
V
A
INPUT DC input current
ISEn
SEn DC input current
ISEL
SEL0,1 DC input current
IFR
FaultRST DC input current
VFR
ISENSE
DS10826 - Rev 5
Value
-1 to 10
mA
FaultRST DC input voltage
7.5
V
MultiSense pin DC output current (VGND = VCC and VSENSE < 0 V)
10
MultiSense pin DC output current in reverse (VCC < 0 V)
-20
mA
page 5/45
VN7050AJ, VN7050AS
Thermal data
Symbol Parameter
EMAX
Value
Unit
30
mJ
4000
V
2000
V
4000
V
Maximum switching energy (single pulse) (TDEMAG = 0.4 ms; Tjstart = 150 °C)
Electrostatic discharge (JEDEC 22A-114F)
VESD
VESD
Tj
Tstg
2.2
•
INPUT
•
MultiSense
•
SEn, SEL0,1, FaultRST
•
OUTPUT
4000
V
•
VCC
4000
V
750
V
Charge device model (CDM-AEC-Q100-011)
Junction operating temperature
-40 to 150
Storage temperature
-55 to 150
°C
Thermal data
Table 4. Thermal data
Symbol
Rthj-board
Typ. value
Parameter
Thermal resistance junction-board (JEDEC JESD 51-8) (1)
Unit
SO-8
PowerSSO-16
29.4
6.8
Rthj-amb
Thermal resistance junction-ambient (JEDEC JESD
51-2)(2)
67.5
58.5
Rthj-amb
Thermal resistance junction-ambient (JEDEC JESD 51-2)(1)
45.8
24.5
Unit
°C/W
1. Device mounted on four-layers 2s2p PCB
2. Device mounted on two-layers 2s0p PCB with 2 cm2 heatsink copper trace
2.3
Main electrical characteristics
7 V < VCC < 28 V; -40°C < Tj < 150°C, unless otherwise specified.
All typical values refer to VCC = 13 V; Tj = 25°C, unless otherwise specified.
Table 5. Power section
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
4
13
28
V
VCC
Operating supply voltage
VUSD
Undervoltage shutdown
4
V
Undervoltage shutdown reset
5
V
VUSDReset
VUSDhyst
Undervoltage shutdown
hysteresis
0.3
IOUT = 2 A; Tj = 25°C
RON
Vclamp
DS10826 - Rev 5
On-state resistance
Clamp voltage
V
50
IOUT = 2 A; Tj = 150°C
100
IOUT = 2 A; VCC = 4 V; Tj = 25°C
75
IS = 20 mA; 25°C < Tj < 150°C
41
IS = 20 mA; Tj = -40°C
38
46
52
mΩ
V
V
page 6/45
VN7050AJ, VN7050AS
Main electrical characteristics
Symbol
Parameter
Test conditions
Supply current in standby at
VCC = 13 V (1)
ISTBY
Min.
Typ.
Max.
VCC = 13 V;
VIN = VOUT = VFR = VSEn = 0 V;
VSEL0,1 = 0 V; Tj = 25°C
0.5
VCC = 13 V;
VIN = VOUT = VFR = VSEn = 0 V;
VSEL0,1 = 0 V; Tj = 85°C (2)
0.5
VCC = 13 V;
VIN = VOUT = VFR = VSEn = 0 V;
VSEL0,1 = 0 V; Tj = 125°C
3
Unit
µA
VCC = 13 V;
tD_STBY
IS(ON)
IGND(ON)
Standby mode blanking time
Supply current
VCC = 13 V; VSEn = 0 V;
VSEL0,1 = VFR = 0 V; VIN = 5 V;
IOUT = 0 A
Control stage current
consumption in ON-state. All
channels active.
VCC = 13 V; VSEn = 5 V;
VFR = VSEL0,1 = 0 V; VIN = 5 V;
IOUT = 2 A
Off-state output current at
VCC = 13 V
IL(off)
VF
VIN = VOUT = VFR = VSEL0,1 = 0 V;
VSEn = 5 V to 0 V
Output - VCC diode voltage
60
VIN = VOUT = 0 V; VCC = 13 V;
Tj = 25°C
0
VIN = VOUT = 0 V; VCC = 13 V;
Tj = 125°C
0
300
550
µs
3
5
mA
6
mA
0.01
0.5
µA
3
IOUT = -2 A; Tj = 150°C
0.7
V
1. PowerMOS leakage included.
2. Parameter specified by design; not subjected to production test.
Table 6. Switching
VCC = 13 V; -40°C < Tj < 150°C, unless otherwise specified
Symbol
Parameter
td(on) (1)
Turn-on delay time at
Tj = 25 °C
td(off)
(1)
Turn-off delay time at
Tj = 25 °C
(dVOUT/dt)on (1)
Turn-on voltage slope at
Tj = 25 °C
(dVOUT/dt)off (1)
Turn-off voltage slope at
Tj = 25 °C
Test conditions
Min.
Typ.
Max.
10
60
120
RL = 6.5 Ω
Unit
µs
10
40
100
0.1
0.3
0.7
0.1
0.32
0.7
RL = 6.5 Ω
V/µs
WON
Switching energy losses at
turn-on (twon)
RL = 6.5 Ω
—
0.25
0.33 (2)
mJ
WOFF
Switching energy losses at
turn-off (twoff)
RL = 6.5 Ω
—
0.23
0.31(2)
mJ
Differential Pulse skew (tPHL tPLH)
RL = 6.5 Ω
-80
-30
20
µs
tSKEW (1)
1. See Figure 6. Switching time and Pulse skew.
2. Parameter guaranteed by design and characterization; not subjected to production test.
DS10826 - Rev 5
page 7/45
VN7050AJ, VN7050AS
Main electrical characteristics
Table 7. Logic inputs
7 V < VCC < 28 V; -40°C < Tj < 150°C
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
0.9
V
INPUT characteristics
VIL
Input low level voltage
IIL
Low level input current
VIH
Input high level voltage
IIH
High level input current
VI(hyst)
Input hysteresis voltage
VICL
Input clamp voltage
VIN = 0.9 V
1
µA
2.1
V
VIN = 2.1 V
10
0.2
IIN = 1 mA
V
5.3
IIN = -1 mA
µA
7.2
-0.7
V
FaultRST characteristics (VN7050AJ only)
VFRL
Input low level voltage
IFRL
Low level input current
VFRH
Input high level voltage
IFRH
High level input current
VFR(hyst)
Input hysteresis voltage
VFRCL
Input clamp voltage
0.9
VIN = 0.9 V
1
µA
2.1
V
VIN = 2.1 V
10
0.2
IIN = 1 mA
V
V
5.3
IIN = -1 mA
µA
7.5
-0.7
V
SEL0,1 characteristics (VN7050AJ only)(7 V < VCC < 18 V)
VSELL
Input low level voltage
ISELL
Low level input current
VSELH
Input high level voltage
ISELH
High level input current
VSEL(hyst)
Input hysteresis voltage
VSELCL
Input clamp voltage
0.9
VIN = 0.9 V
1
µA
2.1
V
VIN = 2.1 V
10
0.2
IIN = 1 mA
V
V
5.3
IIN = -1 mA
µA
7.2
-0.7
V
SEn characteristics (7 V < VCC < 18 V)
VSEnL
Input low level voltage
ISEnL
Low level input current
VSEnH
Input high level voltage
ISEnH
High level input current
VSEn(hyst)
Input hysteresis voltage
VSEnCL
DS10826 - Rev 5
Input clamp voltage
0.9
VIN = 0.9 V
1
µA
2.1
V
VIN = 2.1 V
10
0.2
IIN = 1 mA
IIN = -1 mA
V
µA
V
5.3
7.2
-0.7
V
page 8/45
VN7050AJ, VN7050AS
Main electrical characteristics
Table 8. Protections
7 V < VCC < 18 V; -40°C < Tj < 150°C
Symbol
Parameter
ILIMH
Test conditions
DC short circuit current
ILIML
TTSD
4 V < VCC < 18 V
VCC = 13 V;
during thermal cycling
TR < Tj < TTSD
TRS
Thermal reset of fault
diagnostic indication
THYST
Thermal hysteresis(TTSD TR)(1)
ΔTJ_SD
Dynamic temperature
tLATCH_RST
VDEMAG
VON
21
30
Max.
Unit
42
(1)
A
10
Shutdown temperature
Reset temperature(1)
Typ.
VCC = 13 V
Short circuit current
TR
Min.
150
175
TRS + 1
TRS + 7
VFR = 0 V; VSEn = 5 V
200
°C
135
7
Tj = -40°C; VCC = 13 V
60
VFR = 5 V to 0 V; VSEn = 5 V;
Fault reset time for output
unlatch (only for VN7050AJ)(1) VIN = 5 V; VSEL0 = 0 V; VSEL1 = 0 V
3
IOUT = 2 A; L = 6 mH; Tj = -40°C
VCC - 38
Turn-off output voltage clamp
IOUT = 2 A; L = 6 mH; Tj = 25°C to
150°C
VCC - 41
Output voltage drop limitation
IOUT = 0.2 A
K
10
20
µs
V
VCC - 46
VCC - 52
20
V
mV
1. Parameter guaranteed by design and characterization; not subjected to production test.
Table 9. MultiSense
7 V < VCC < 18 V; -40°C < Tj < 150°C
Symbol
VSENSE_CL
Parameter
MultiSense clamp voltage
Test conditions
Min.
VSEn = 0 V; ISENSE = 1 mA
-17
VSEn = 0 V; ISENSE = -1 mA
Typ.
Max. Unit
-12
7
V
CurrentSense characteristics
KOL
dKcal/Kcal (1) (2)
KLED
dKLED/KLED (1) (2)
K0
dK0/K0 (1) (2)
K1
DS10826 - Rev 5
IOUT/ISENSE
IOUT = 0.01 A; VSENSE = 0.5 V;
VSEn = 5 V
440
Current sense ratio drift at
calibration point
IOUT = 0.01 A to 0.03 A;
Ical = 17.5 mA; VSENSE = 0.5 V;
VSEn = 5 V
-30
IOUT/ISENSE
IOUT = 0.05 A; VSENSE = 0.5 V;
VSEn = 5 V
530
Current sense ratio drift
IOUT = 0.05 A; VSENSE = 0.5 V;
VSEn = 5 V
-25
IOUT/ISENSE
IOUT = 0.2 A; VSENSE = 0.5 V;
VSEn = 5 V
830
Current sense ratio drift
IOUT = 0.2 A; VSENSE = 0.5 V;
VSEn = 5 V
-20
IOUT/ISENSE
IOUT = 0.4 A; VSENSE = 4 V;
VSEn = 5 V
915
30
%
1445 2200
25
%
1330 1935
20
%
1290 1700
page 9/45
VN7050AJ, VN7050AS
Main electrical characteristics
7 V < VCC < 18 V; -40°C < Tj < 150°C
Symbol
dK1/K1 (1) (2)
K2
dK2/K2 (1) (2)
K3
dK3/K3 (1) (2)
Parameter
Test conditions
Min.
Current sense ratio drift
IOUT = 0.4 A; VSENSE = 4 V;
VSEn = 5 V
-15
IOUT/ISENSE
IOUT = 1.5 A; VSENSE = 4 V;
VSEn = 5 V
980
Current sense ratio drift
IOUT = 1.5 A; VSENSE = 4 V;
VSEn = 5 V
-10
IOUT/ISENSE
IOUT = 4.5 A; VSENSE = 4 V;
VSEn = 5 V
Current sense ratio drift
IOUT = 4.5 A; VSENSE = 4 V;
VSEn = 5 V
-5
5
MultiSense disabled: VSEn = 0 V
0
0.5
-0.5
0.5
MultiSense enabled: VSEn = 5 V;
Channel ON; IOUT = 0 A; Diagnostic
selected; VIN = 5 V; VSEL0 = 0 V;
VSEL1 = 0 V; IOUT = 0 A
0
2
MultiSense enabled: VSEn = 5 V;
Channel OFF; Diagnostic selected:
VIN = 0 V; VSEL0 = 0 V; VSEL1 = 0 V
0
2
MultiSense disabled:
-1 V < VSENSE < 5 V(1)
ISENSE0
MultiSense leakage current
Typ.
Max. Unit
15
%
1200 1470
10
%
1050 1190 1290
%
µA
VOUT_MSD (1)
VIN = 5 V; VSEn = 5 V; VSEL0 = 0 V;
Output Voltage for MultiSense
VSEL1 = 0 V; RSENSE = 2.7 kΩ;
shutdown
IOUT = 2 A
VSENSE_SAT
Multisense saturation voltage
VCC = 7 V; RSENSE = 2.7 kΩ;
VSEn = 5 V; VIN = 5 V; VSEL0 = 0 V;
VSEL1 = 0 V; IOUT = 2 A; Tj = 150°C
5
V
CS saturation current
VCC = 7 V; VSENSE = 4 V; VIN = 5 V;
VSEn = 5 V; VSEL0 = 0 V; VSEL1 = 0 V;
Tj = 150°C
4
mA
Output saturation current
VCC = 7 V; VSENSE = 4 V; VIN = 5 V;
VSEn = 5 V; VSEL0 = 0 V; VSEL1 = 0 V;
Tj = 150°C
6
A
ISENSE_SAT (1)
IOUT_SAT (1)
5
V
OFF-state diagnostic
VOL
OFF-state open-load voltage
detection threshold
VIN = 0 V; VSEn = 5 V; VSEL0 = 0 V;
VSEL1 = 0 V
IL(off2)
OFF-state output sink current
VIN = 0 V; VOUT = VOL
-100
VIN = 5 V to 0 V; VSEn = 5 V;
VSEL0 = 0 V; VSEL1 = 0 V; IOUT = 0 A;
VOUT = 4 V
100
tDSTKON
OFF-state diagnostic delay
time from falling edge of
INPUT
(see Figure 9. TDSTKON )
tD_OL_V
tD_VOL
DS10826 - Rev 5
Settling time for valid OFFstate open load diagnostic
indication from rising edge of
SEn
VIN = 0 V; VFR = 0 V; VSEL0 = 0 V;
VSEL1 = 0 V; VOUT = 4 V;
OFF-state diagnostic delay
time from rising edge of VOUT
VIN = 0 V; VSEn = 5 V; VSEL0 = 0 V;
VSEL1 = 0 V; VOUT = 0 V to 4 V
2
3
350
4
V
-15
µA
700
µs
60
µs
30
µs
VSEn = 0 V to 5 V
5
page 10/45
VN7050AJ, VN7050AS
Main electrical characteristics
7 V < VCC < 18 V; -40°C < Tj < 150°C
Symbol
Parameter
Test conditions
Min.
Typ.
Max. Unit
Chip temperature analog feedback (VN7050AJ only)
MultiSense output voltage
proportional to chip
temperature
VSENSE_TC
dVSENSE_TC/dT(1)
Temperature coefficient
Transfer function
VSEn = 5 V; VSEL0 = 0 V; VSEL1 = 5 V;
VIN = 0 V; RSENSE = 1 kΩ; Tj = -40°C
2.325 2.41 2.495
V
VSEn = 5 V; VSEL0 = 0 V; VSEL1 = 5 V;
VIN = 0 V; RSENSE = 1 kΩ; Tj = 25°C
1.985 2.07 2.155
V
VSEn = 5 V; VSEL0 = 0 V; VSEL1 = 5 V;
VIN = 0 V; RSENSE = 1 kΩ; Tj = 125°C
1.435 1.52 1.605
V
-5.5
mV/
K
Tj = -40°C to 150°C
VSENSE_TC (T) = VSENSE_TC (T0) + dVSENSE_TC / dT * (T - T0)
VCC supply voltage analog feedback (VN7050AJ only)
VSENSE_VCC
MultiSense output voltage
proportional to VCC supply
voltage
Transfer function (3)
VCC = 13 V; VSEn = 5 V; VSEL0 = 5 V;
VSEL1 = 5 V; VIN = 0 V;
RSENSE = 1 kΩ
3.16
3.23
3.3
V
6.6
V
30
mA
60
µs
VSENSE_VCC = VCC / 4
Fault diagnostic feedback (see Table 10. Truth table)
VSENSEH
MultiSense output voltage in
fault condition
VCC = 13 V; VIN = 0 V; VSEn = 5 V;
VSEL0 = 0 V; VSEL1 = 0 V; IOUT = 0 A;
VOUT = 4 V; RSENSE = 1 kΩ;
5
ISENSEH
MultiSense output current in
fault condition
VCC = 13 V; VSENSE = 5 V
7
20
MultiSense timings (current sense mode - see Figure 7. MultiSense timings (current sense mode)) (4)
tDSENSE1H
Current sense settling time
from rising edge of SEn
VIN = 5 V; VSEn = 0 V to 5 V;
RSENSE = 1 kΩ; RL = 6.5 Ω
tDSENSE1L
Current sense disable delay
time from falling edge of SEn
VIN = 5 V; VSEn = 5 V to 0 V;
RSENSE = 1 kΩ; RL = 6.5 Ω
5
20
µs
tDSENSE2H
Current sense settling time
from rising edge of INPUT
VIN = 0 V to 5 V; VSEn = 5 V;
RSENSE = 1 kΩ; RL = 6.5 Ω
100
250
µs
ΔtDSENSE2H
Current sense settling time
from rising edge of IOUT
(dynamic response to a step
change of IOUT)
VIN = 5 V; VSEn = 5 V; RSENSE = 1 kΩ;
ISENSE = 90 % of ISENSEMAX;
RL = 6.5 Ω
100
µs
tDSENSE2L
Current sense turn-off delay
time from falling edge of
INPUT
VIN = 5 V to 0 V; VSEn = 5 V;
RSENSE = 1 kΩ; RL = 6.5 Ω
250
µs
50
MultiSense timings (chip temperature sense mode - see Figure 8. Multisense timings (chip temperature and VCC sense mode)
(VN7050AJ only)) (4)
tDSENSE3H
VSENSE_TC settling time from
rising edge of SEn
VSEn = 0 V to 5 V; VSEL0 = 0 V;
VSEL1 = 5 V; RSENSE = 1 kΩ
60
µs
tDSENSE3L
VSENSE_TC disable delay time
from falling edge of SEn
VSEn = 5 V to 0 V; VSEL0 = 0 V;
VSEL1 = 5 V; RSENSE = 1 kΩ
20
µs
MultiSense timings (VCC voltage sense mode - see Figure 8. Multisense timings (chip temperature and VCC sense mode)
(VN7050AJ only)) (4)
tDSENSE4H
DS10826 - Rev 5
VSENSE_VCC settling time from VSEn = 0 V to 5 V; VSEL0 = 5 V;
VSEL1 = 5 V; RSENSE = 1 kΩ
rising edge of SEn
60
µs
page 11/45
VN7050AJ, VN7050AS
Main electrical characteristics
7 V < VCC < 18 V; -40°C < Tj < 150°C
Symbol
tDSENSE4L
Parameter
Test conditions
Min.
VSENSE_VCC disable delay
time from falling edge of SEn
VSEn = 5 V to 0 V; VSEL0 = 5 V;
VSEL1 = 5 V; RSENSE = 1 kΩ
Typ.
Max. Unit
20
µs
MultiSense timings (Multiplexer transition times) (VN7050AJ only)(4)
tD_CStoTC
MultiSense transition delay
from current sense to TC
sense
VIN = 5 V; VSEn = 5 V; VSEL0 = 0 V;
VSEL1 = 0 V to 5 V; IOUT = 1 A;
RSENSE = 1 kΩ
60
µs
tD_TCtoCS
MultiSense transition delay
from TC sense to current
sense
VIN = 5 V; VSEn = 5 V; VSEL0 = 0 V;
VSEL1 = 5 V to 0 V; IOUT = 1 A;
RSENSE = 1 kΩ
20
µs
tD_CStoVCC
MultiSense transition delay
from current sense to VCC
sense
VIN = 5 V; VSEn = 5 V; VSEL0 = 5 V;
VSEL1 = 0 V to 5 V; IOUT = 1 A;
RSENSE = 1 kΩ
60
µs
tD_VCCtoCS
MultiSense transition delay
from VCC sense to current
sense
VIN = 5 V; VSEn = 5 V; VSEL0 = 5 V;
VSEL1 = 5 V to 0 V; IOUT = 1 A;
RSENSE = 1 kΩ
20
µs
tD_TCtoVCC
MultiSense transition delay
from TC sense to VCC sense
VCC = 13 V; Tj = 125°C; VSEn = 5 V;
VSEL0 = 0 V to 5 V; VSEL1 = 5 V;
RSENSE = 1 kΩ
20
µs
tD_VCCtoTC
MultiSense transition delay
from VCC sense to TC sense
VCC = 13 V; Tj = 125°C; VSEn = 5 V;
VSEL0 = 5 V to 0 V; VSEL1 = 5 V;
RSENSE = 1 kΩ
20
µs
1. Parameter specified by design; not subjected to production test.
2. All values refer to VCC = 13 V; Tj = 25°C, unless otherwise specified.
3. VCC sensing and TC are referred to GND potential.
4. Transition delay are measured up to +/- 10% of final conditions.
Figure 4. IOUT/ISENSE versus IOUT
3000
2500
Max
Min
K-factor
2000
Typ
1500
1000
500
0
0
1
2
3
4
5
IOUT [A]
GAPG0410131410CFT
DS10826 - Rev 5
page 12/45
VN7050AJ, VN7050AS
Main electrical characteristics
Figure 5. Current sense accuracy versus IOUT
65
60
55
50
45
40
35
%
30
25
20
15
10
5
0
Current sense uncalibrated precision
Current sense calibrated precision
0
1
2
3
4
IOUT [A]
5
GAPG0410131413CFT
Figure 6. Switching time and Pulse skew
twon
VOUT
twoff
Vcc
80% Vcc
ON
OFF
dVOUT/dt
dVOUT/dt
20% Vcc
t
INPUT
td(off)
td(on)
tpLH
tpHL
t
DS10826 - Rev 5
page 13/45
VN7050AJ, VN7050AS
Main electrical characteristics
Figure 7. MultiSense timings (current sense mode)
IN1
High
SEn
Low
High
SEL0
Low
High
SEL1
Low
IOUT1
CURRENT SENSE
tDSENSE2H
tDSENSE1L
tDSENSE1H
tDSENSE2L
Figure 8. Multisense timings (chip temperature and VCC sense mode) (VN7050AJ only)
High
SEn
Low
High
SEL0
Low
High
SEL1
Low
VCC
VSENSE = VSENSE_VCC
VSENSE = VSENSE_TC
SENSE
tDSENSE4H
tDSENSE4L
VCC VOLTAGE SENSE MODE
tDSENSE3H
tDSENSE3L
CHIP TEMPERATURE SENSE MODE
GAPGCFT00319
DS10826 - Rev 5
page 14/45
VN7050AJ, VN7050AS
Main electrical characteristics
Figure 9. TDSTKON
VINPUT
VOUT
VOUT > VOL
MultiSense
TDSTKON
GAPG2609141140CFT
Table 10. Truth table
Mode
Standby
Normal
Overload
Undervoltage
OFF-state
diagnostics
Negative output
voltage
Conditions
All logic inputs low
INX FR (1) SEn SELX (1) OUTX MultiSense
L
L
L
X
H
L
Hi-Z
L
See (2)
H
See (2)
Outputs configured for
auto-restart
H
H
H
See (2)
Outputs configured for
latch-off(1)
Overload or short to GND
causing:
L
X
L
See (2)
Tj > TTSD or
H
L
H
See (2)
Output cycles with
temperature hysteresis
ΔTj > ΔTj _SD
H
H
L
See (2)
Output latches-off(1)
VCC < VUSD (falling)
X
X
L
Hi-Z
Re-start when
VCC > VUSD +
L
Hi-Z
H
See (2)
H
See (2)
VOL; MUX channel =
channel 0 diagnostic; Mutisense = VSENSEH
2.4
Waveforms
Figure 10. Latch functionality - behavior in hard short-circuit condition (TAMB t latch RST
I limH
Fault Reset
Output
current
Junction temperature
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