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參數(shù)資料
| 型號： | NCV33033 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Brushless DC Motor Controller(無刷直流電機(jī)控制器) |
| 中文描述： | 無刷直流電機(jī)控制器（無刷直流電機(jī)控制器） |
| 文件頁數(shù)： | 14/26頁 |
| 文件大?。?/td> | 355K |
| 代理商： | NCV33033 |
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MC33033, NCV33033
http://onsemi.com
14
11
PWM
EA
7
19
9
10
Resistor R
with capacitor C sets the acceleration time constant while R
2
controls the deceleration. The values of R
and R
should be at least ten times
greater than the speed set potentiometer to minimize time constant variations
with different speed settings.
The SN74LS145 is an open collector BCD to One of Ten decoder. When
connected as shown, input codes 0000 through 1001 steps the PWM in
increments of approximately 10% from 0 to 90% ontime. Input codes 1010
through 1111 will produce 100% ontime or full motor speed.
Figure 30. Controlled Acceleration/Deceleration
Figure 31. Digital Speed Controller
R
1
EA
R
2
7
PWM
C
Enable
Increase
Speed
19
10
9
11
16
V
CC
Gnd
Q
0
2
40.4 k
8
P0
BCD
Inputs
Q
9
Q
8
Q
7
Q
6
Q
5
Q
4
Q
3
Q2
Q
1
P3
P2
P1
100 k
1
51.3 k
3
4
5
6
7
63.6 k
77.6 k
92.3 k
108 k
9
126 k
11
145 k
166 k
10
5.0 V
S
REF
REF
40 k
40 k
15
14
13
12
11
REF
PWM
EA
7
19
9
10
40 k
11
REF
PWM
EA
7
19
9
10
The rotor position sensors can be used as a tachometer. By differentiating the
positivegoing edges and then integrating them over time, a voltage
proportional to speed can be generated. The error amp compares this voltage
to that of the speed set to control the PWM.
This circuit can control the speed of a cooling fan proportional to the difference
between the sensor and set temperatures. The control loop is closed as the
forced air cools the NTC thermistor. For controlled heating applications,
exchange the positions of R
1
and R
2
.
Figure 32. Closed Loop Speed Control
Figure 33. Closed Loop Temperature Control
0.22
1.0 M
0.1
100 k
0.01
10 k
10 k
10 M
To Sensor
Input (Pin 4)
Increase
Speed
T
R
1
R
6
R
5
R
2
R
3
R
4
VB
Vref
R5
R6
1
R3
R6
R6
VPi
n11
Vref
R3
R1
R4
R2
R2
R3
–
R4
R3
VB
40 k
Drive Outputs
The three Top Drive Outputs (Pins 1, 2, 20) are open
collector NPN transistors capable of sinking 50 mA with a
minimum breakdown of 30 V. Interfacing into higher
voltage applications is easily accomplished with the circuits
shown in Figures 22 and 23.
The three totem pole Bottom Drive Outputs (Pins 15, 16,
17) are particularly suited for direct drive of NChannel
MOSFETs or NPN bipolar transistors (Figures 24, 25, 26,
and 27). Each output is capable of sourcing and sinking up
to 100 mA.
Thermal Shutdown
Internal thermal shutdown circuity is provided to protect
the IC in the event the maximum junction temperature is
exceeded. When activated, typically at 170
°
C, the IC acts as
though the regulator was disabled, in turn shutting down the
IC.
SYSTEM APPLICATIONS
Three Phase Motor Commutation
The three phase application shown in Figure 34 is an open
loop motor controller with full wave, six step drive. The
upper power switch transistors are Darlington PNPs while
the lower switches are NChannel power MOSFETs. Each
of these devices contains an internal parasitic catch diode
that is used to return the stator inductive energy back to the
power supply. The outputs are capable of driving a delta or
wye connected stator, and a grounded neutral wye if split
supplies are used. At any given rotor position, only one top
and one bottom power switch (of different totem poles) is
enabled. This configuration switches both ends of the stator
winding from supply to ground which causes the current
flow to be bidirectional or full wave. A leading edge spike
is usually present on the current waveform and can cause a
currentlimit error. The spike can be eliminated by adding
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PDF描述 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCV33033DWR2 | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 DC Brushless Motor RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| NCV33033DWR2G | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 DC Brushless Motor Controller RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| NCV33035 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Brushless DC Motor Controller |
| NCV33035DWR2 | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 DC Brushless Motor RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| NCV33035DWR2G | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 DC Brushless Motor Controller RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
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