Overview

EV-VN7140AS

2/7

DocID026151 Rev 2

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

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

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

J4

J1

Vbat

Vbat

C1

100nF

PGND

PGND

D1

ES1DL

Out

LED

J2

C2

10nF

R8

2k2

R7

4K7

R3 15K

+5V

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

J3

CON18

IN

S_EN

MultiSense

R1 15K

IN

Rsense

MultiSense

S_EN

R6 15K

Cext

1

TP2

1

TP1

SEn

2

GND

3

INPUT

1

VCC

8

OUTPUT

7

OUTPUT

6

VCC

5

MultiSense

4

U1

SO-8

Vbat

Vbat

R_UP

In_PullUP

In_PullUP

PGND

PGND

PGND

PGND

PGND