 English |
|
|
|
|
|
|
|
| MLX81150 Datasheet, PDF (12/23 Pages) Melexis Microelectronic Systems – LIN-Slave for relay and DC motor control | |||
| |||
| ◁ |
MLX81150
LIN-Slave for relay and DC motor control
4.3 Single DC motor drive in FET controlled full bridge applications
By adding some external additional circuitry, the IC will also allow to drive DC motors in full bridge
applications. Position, speed and direction sensing is done via external Hall latches.
By having one PWM on the low side path of the half bridge and the inverse PWM (with programmable
interlock delay in the high side path) the p channel can be actively switched on in case the current wheels
out.
Same is for the n-channel Transistor.
The other side of the full bridge is then statically switched on or off.
VBAT
VS
RTG
VDDA
VDDD
VBAT
GNDCAP
AD1
PS
Hall
sensor
M
TC1
REL1
GNDH
TC2
REL2
LIN
LIN
KEY0
KEY1
KEY2
KEY3
KEY4
KEY5
KEY6
KEY7
PWM1
PWM2
SENSE1
SENSE2
OSC1
TI1
OSC2
TI2
GNDD
TO
GNDA
GNDL
GNDCAP
Figure 4 â Principle application diagram showing a DC motor in a full bridge application
MLX81150 â Product abstract
Page 12 of 23
TFR / 02.08.2013
Rev 015
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese