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MLX81205_15 Datasheet, PDF (12/18 Pages) Melexis Microelectronic Systems – BLDC Motor Controller
MLX81205/07
5.3 Sensor based BLDC Motor Control
In sample application below, the chip MLX81207 is driving a BLDC motor with 3 Hall sensors. An external P-FET is used
to generate the 3.3V supply with a higher current capability in order to keep the power dissipation outside of the
MLX81207 IC.
VBAT
VS
CLKO
VCC3
GNDCAP
VCC3
LIN / PWM
RTG
VDDA
VDDD
VBAT_S1
VBAT_S2
VREF
CP2
CP1
CP0
HS0
IO1
U
LIN
LS0
IO2 MLX81207
HS1
IO3
V
IOHV
OSC1
LS1
OSC2
HS2
IO4
IO5
W
LS2
TI0
TI1
T
GNDCAP
TO
GNDCAP
GNDD
GNDA
GNDDRV
VHIGH
SHUNT
VPROT
U
VPROT
V
VPROT
W
VCC3
VCCHALL
HALL1
HALL2
HALL3
GND
GND
Figure 4 – Typical Sensor based BLDC Motor Control Application Example with MLX81207
390108120502
Rev. 4.7
Page 12 of 18
Product Abstract
11/2/2015