MLX81150

LIN-Slave for relay and DC motor control

MLX81150 – Product abstract

Page 10 of 23

TFR / 02.08.2013

Rev 015

4.

Application Examples

The following sections show typical application examples

[1] The application examples are principal application schematics only. The details need to be worked out for each application

schematic separately, depending on the application requirements.

4.1

Single DC motor drive

In this sample application the IC can realize the driving of a DC motor via an external relay bridge. Speed,

position sensing and anti trap or block detection are done by means of external Hall latches connected to a

timer capture unit. The Hall sensors are switched off during standby mode via a switchable battery voltage

output. Additionally relay contact monitoring can done by checking the voltages over it.

VS

VDDA

KEY0

TC2

TC1

REL2

REL1

PS

KEY1

KEY2

KEY3

KEY4

KEY5

TI1

TI2

TO

Hall

sensor

M

KEY6

GNDD

AD1

VDDD

PWM1

PWM2

LIN

LIN

RTG

SENSE1

SENSE2

KEY7

GNDH

OSC2

OSC1

GNDA

GNDL

GNDCAP

GNDCAP

Figure 2 – Principle application diagram showing a common relay driver controlled by external

switches and LIN bus