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Phase bldc low voltage motor with motor brake, Table 4-6, Apply to operation at 25 – Motorola M68HC08 User Manual

Page 74: Hardware design, Freescale semiconductor, inc

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Hardware Design

Designer Reference Manual

DRM028 — Rev 0

74

Hardware Design

MOTOROLA

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.

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

I

CC

175

mA

Min logic 1 input voltage

V

IH

2.0

V

Max logic 0 input voltage

V

IL

0.8

V

Analog output range

V

Out

0

3.3

V

Bus current sense voltage

I

Sense

33

mV/A

Bus voltage sense voltage

V

Bus

60

mV/V

Peak output current
(300 ms)

I

PK

46

A

Continuous output current

I

RMS

30

A

Brake resistor dissipation
(continuous)

P

BK

50

W

Brake resistor dissipation
(15 sec pk)

P

BK(Pk)

100

W

Total power dissipation

P

diss

85

W

F

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e

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S

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Freescale Semiconductor, Inc.

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