MLX81150 Datasheet, PDF (10/23 Pages) Melexis Microelectronic Systems – LIN-Slave for relay and DC motor control

MLX81150
LIN-Slave for relay and DC motor control
4. Application Examples
The following sections show typical application examples ^[1].
[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.
V_BAT
VS
RTG
VDDA
VDDD
VBAT
GNDCAP
AD1
PS
Hall
sensor
TC1
REL1
M
GNDH
TC2
REL2
LIN
LIN
KEY0
KEY1
KEY2
KEY3
KEY4
KEY5
KEY6
KEY7
OSC1
OSC2
GNDD
GNDA
GNDL
GNDCAP
PWM1
PWM2
SENSE1
SENSE2
TI1
TI2
TO
Figure 2 – Principle application diagram showing a common relay driver controlled by external
switches and LIN bus
MLX81150 – Product abstract
Page 10 of 23
TFR / 02.08.2013
Rev 015