Motorola M68HC08 manual 2 3-phase Bldc Low Voltage Motor with Motor Brake, Section

Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.

Hardware Design

Table 4-6. Electrical Chatacteristics of the 3-Ph BLDC

Low Voltage Power Stage

Characteristic	Symbol	Min	Typ	Max	Units
Motor Supply Voltage	Vac	10	12	16	V
Quiescent current	ICC	—	175	—	mA
Min logic 1 input voltage	VIH	2.0	—	—	V
Max logic 0 input voltage	VIL	—	—	0.8	V
Analog output range	VOut	0	—	3.3	V
Bus current sense voltage	ISense	—	33	—	mV/A
Bus voltage sense voltage	VBus	—	60	—	mV/V
Peak output current	IPK	—	—	46	A
(300 ms)
Continuous output current	IRMS	—	—	30	A
Brake resistor dissipation	PBK	—	—	50	W
(continuous)
Brake resistor dissipation	PBK(Pk)	—	—	100	W
(15 sec pk)
Total power dissipation	Pdiss	—	—	85	W

4.6.2 3-phase BLDC Low Voltage Motor with Motor Brake

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 Table 2-4,

Section 2.

Designer Reference Manual		DRM028 — Rev 0
74	Hardware Design	MOTOROLA
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