EV-VNQ7140AJ
VNQ7140AJ evaluation board
Data brief
Features
Max transient supply voltage
VCC
41 V
Operating voltage range
VCC
4 to 28 V
Typ. on-state resistance (per Ch)
RON
140 mΩ
Current limitation (typ)
ILIMH
12 A
Stand-by current (max)
ISTBY
0.5 µA
Simple single IC application board dedicated
for VNQ7140AJ
Provides electrical connectivity and thermal
heat-sinking for easy prototyping
General device features
Quad channel smart high side driver
with analog feedback
Very low standby current
Compatible with 3 V and 5 V CMOS
outputs
September 2015
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
Application
Typical applications are all types of automotive
resistive, inductive and capacitive loads.
Table 1: Device summary
Order code
Reference
EV-VNQ7140AJ
VNQ7140AJ evaluation board
DocID027587 Rev 2
For further information contact your local STMicroelectronics sales
office
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www.st.com
Description
1
EV-VNQ7140AJ
Description
®
®
This board provides you an easy way to connect STMicroelectronics VIPower M0-7
technology into your existing system.
The board comes pre-assembled with VNQ7140AJ high-side driver. On board, a minimum
set of electrical components (as for device datasheet recommendation), enables the user
to directly connect the load, the power supply and the microcontroller without any additional
effort in external component design and connection.
The VNQ7140AJ is a quad channel high-side driver manufactured using ST proprietary
VIPower technology and housed in PowerSSO-16 package. The device is 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 device integrates 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 low-power mode as well as external sense
resistor sharing among similar devices.
Figure 1: Evaluation board schematic
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Board connections
Board connections
Figure 2: "Evaluation board connections" shows the placement of the connectors to be
used to supply the evaluation board, to connect the load and to control the functionality and
diagnostic of the device.
Figure 2: Evaluation board connections
Table 2: J4 connector: pin functions
Connector
Pin
number
Pin name
J4
1…4
N/A
J4
5
IN_PullUP
J4
6
+5V
J4
7
FaultRST
Active low compatible with 3V and 5V CMOS outputs pin; it
unlatches the output in case of fault; If kept low, sets the
outputs in auto-restart mode.
J4
8
MultiSense
Multiplexed analog sense output pin; it delivers a current
proportional to the selected diagnostic: load current, supply
voltage or chip temperature.
J4
9
S_EN
Active high compatible with 3V and 5V CMOS outputs pin; it
enables the MultiSense diagnostic pin.
J4
10…12
SEL0,1,2
Active high compatible with 3V and 5V CMOS outputs pin;
they address the MultiSense multiplexer.
J4
13…16
IN0,1,2,3
Voltage controlled input pin with hysteresis, compatible with
3V and 5V CMOS outputs. They control output switch state.
J4
17…18
N/A
Pin function
Not connected
Connection to optional external pull-up resistor for open load
detection in off-state.
5V Power Supply
Not connected
In case the user wishes to utilize the Current Sense/MultiSense function of the device, it is
necessary to plug a sense resistor in RSENSE.
The package includes a through-hole resistor, to be mounted on TP1-TP2 (see Figure 4:
"Mounting through-hole sense resistor").
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Board connections
Different RSENSE values can be adopted based on user preference.
EV-VNQ7140AJ
Another option is soldering an SMD resistor on the dedicated PCB pad, as shown in Figure
5: "Pads for soldering SMD resistor".
Figure 3: No sense resistor
Figure 4: Mounting through-hole sense resistor
Figure 5: Pads for soldering SMD resistor
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Thermal data
Thermal data
Table 3: Thermal data
Symbol
Rthj-amb
Parameter
Thermal resistance junction-ambient (MAX)
Max
Unit
43
°C/W
Table 4: PCB specifications
Parameter
Value
Board dimensions
25 mm x 41.5 mm
Number of Cu layer
2
Layer Cu thickness
35 μm
Board finish thickness
1.6 mm +/- 10%
Board Material
FR4
Thermal vias diameter
0.3 mm
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Revision history
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EV-VNQ7140AJ
Revision history
Table 5: Revision history
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Date
Revision
Changes
27-Feb-2015
1
Initial release.
02-Sep-2015
2
Changed image in the cover page. Updated Section 1: "Description"
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EV-VNQ7140AJ
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© 2015 STMicroelectronics – All rights reserved
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