Electrical Chatacteristics Of The 3-Ph Bldc Low Voltage Power Stage - Motorola M68HC08 Reference Manual

Hardware Design
4.6.2 3-phase BLDC Low Voltage Motor with Motor Brake
Designer Reference Manual
74
Freescale Semiconductor, Inc.
Table 4-6. Electrical Chatacteristics of the 3-Ph BLDC
Characteristic
Motor Supply Voltage
Quiescent current
Min logic 1 input voltage
Max logic 0 input voltage
Analog output range
Bus current sense voltage
Bus voltage sense voltage
Peak output current
(300 ms)
Continuous output current
Brake resistor dissipation
(continuous)
Brake resistor dissipation
(15 sec pk)
Total power dissipation
The Low Voltage BLDC motor-brake set incorporates a 3-phase Low
Voltage BLDC motor EM Brno SM40N and attached BLDC motor brake
SG40N. The BLDCmotor has six poles. The incremental position
encoder is coupled to the motor shaft, and position Hall sensors are
mounted between motor and brake. They allow sensing of the position if
required by the control algorithm, which is not required in this sensorless
application. Detailed motor-brake specifications are listed in
Section 2.
Hardware Design
For More Information On This Product,
Go to: www.freescale.com
Low Voltage Power Stage
Symbol
Vac
I
CC
V
IH
V
IL
V
Out
I
Sense
V
Bus
I
PK
I
RMS
P
BK
P
BK(Pk)
P
diss
Min Typ Max
10 12 16
— 175 —
2.0 — —
— — 0.8
0 — 3.3
— 33 —
— 60 —
— — 46
— — 30
— — 50
— — 100
— — 85
Table
DRM028 — Rev 0
MOTOROLA
Units
V
mA
V
V
V
mV/A
mV/V
A
A
W
W
W
2-4,