EV-VN7140AS Datasheet, PDF (2/7 Pages) STMicroelectronics – OFF-state open-load detection

Overview
EV-VN7140AS
1
Overview
It comes pre-assembled with VN7140AS-E high-side driver. On board minimum set of
electrical components (as for device datasheet recommendation) is enabling the user to
directly connect the load, the power supply and the microcontroller without any additional
effort in external component design and connection.
The VN7140AS-E is a single channel high-side driver manufactured using ST proprietary
VIPower^® technology and housed in SO-8 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 also advanced protective functions such as load current limitation,
overload active management by power limitation and overtemperature shutdown.
A dedicated high precision proportional load current sense is available, in addition to the
detection of overload and short circuit to ground, short to V_CC 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
In_PullUP
+5V
MultiSense
S_EN
IN
J3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
CON18
Vbat
Vbat
J1
C1
100nF
PGND
MultiSense
IN
S_EN
R6 15K
R1 15K
R3 15K
Cext
PGND
1
Rsense ^TP1
1
PGND TP2
D1
ES1DL
U1
1 _INPUT
2 _SEn
4 _MultiSense
3 _GND
SO-8
Vbat
VCC ⁸
OUTPUT ⁷
OUTPUT ⁶
VCC ⁵
Vbat
R7
4K7
PGND
LED
PGND
J4
R8
2k2
PGND
In_PullUP
R_UP
C2
10nF
PGND
J2
Out
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DocID026151 Rev 2