參數(shù)資料
型號: DRM026
英文描述: 3-Phase BLDC Motor Control with Sensorless BACK-EMF ADC Zero Crossing Detection Using 56F805
中文描述: 三相無刷直流電動機控制傳感器反電動勢過零檢測ADC的使用56F805
文件頁數(shù): 25/66頁
文件大?。?/td> 1157K
代理商: DRM026
Hardware Design
Optoisolation Board
DRM020 — Rev 0
Designer Reference Manual
MOTOROLA
Hardware Design
25
3.5 Optoisolation Board
Motorola’s embedded motion control series optoisolation board links
signals from a controller to a high-voltage power stage. The board
isolates the controller, and peripherals that may be attached to the
controller, from dangerous voltages that are present on the power stage.
The optoisolation board’s galvanic isolation barrier also isolates control
signals from high noise in the power stage and provides a noise-robust
systems architecture.
Signal translation is virtually one-for-one. Gate drive signals are passed
from controller to power stage via high-speed, high dV/dt, digital
optocouplers. Analog feedback signals are passed back through
HCNR201 high-linearity analog optocouplers. Delay times are typically
Table 3-2. Electrical Characteristics of Power Stage
Characteristic
Symbol
Min
Typ
Max
Units
DC input voltage
Vdc
140
160
230
V
AC input voltage
Vac
100
208
240
V
Quiescent current
I
CC
70
mA
Min logic 1 input voltage
V
IH
2.0
V
Max logic 0 input voltage
V
IL
0.8
V
Input resistance
R
In
10 k
Analog output range
V
Out
0
3.3
V
Bus current sense voltage
I
Sense
563
mV/A
Bus voltage sense voltage
V
Bus
8.09
mV/V
Peak output current
I
PK
2.8
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
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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PDF描述
DRM027 3-Phase Sensorless BLDC Motor Control with Back-EMF Zero Crossing Detection Using 56F805
DRM028 Sensorless BLDC Motor Control Using the MC68HC908MR32
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