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參數(shù)資料
| 型號(hào)： | ML4428 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Sensorless Smart-Start BLDC PWM Motor Controller(無傳感智能啟動(dòng)無刷直流PWM電機(jī)控制器) |
| 中文描述： | 智能傳感器啟動(dòng)無刷電機(jī)控制器的PWM（無傳感智能啟動(dòng)無刷直流脈寬調(diào)制電機(jī)控制器） |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 151K |
| 代理商： | ML4428 |
April 1997
PRELIMINARY
ML4428
*
Sensorless Smart-Start BLDC PWM Motor Controller
GENERAL DESCRIPTION
The ML4428 motor controller provides all of the functions
necessary for starting and controlling the speed of delta or
wye-wound Brushless DC (BLDC) Motors without the need
for Hall Effect sensors.
Back-EMF voltage is sensed from the motor windings to
determine the proper commutation phase sequence using
PLL techniques. The patented back-EMF sensing technique
used will commutate virtually any 3-phase BLDC motor that
has at least a 30% variation in inductance during rotation
and is insensitive to PWM noise and motor snubbing
circuitry.
The ML4428 also utilizes a patented start-up technique
which samples the rotor position and applies the proper
drive to accelerate the motor. This ensures no reverse
rotation at start-up and reduces total start-up time.
features
I
Stand-alone operation with forward and reverse
I
On-board start sequence: Sense Position
Drive
Accelerate
Set Speed
I
No backward movement at start-up
I
Patented back-EMF commutation technique
I
Simple variable speed control with on-board reference
I
Single external resistor sets all critical currents
I
PWM control for maximum efficiency or linear control
for minimum noise
I
12V operation provides direct FET drive for 12V motors
I
Drives high voltage motors with high side FET drivers
I
Guaranteed no shoot-through when driving external
FET gates directly
* Some Packages Are End Of Life
Block Diagram/Typical Application
18
13
22
23
24
2
3
4
10
11
9
9V POWER FAIL
BACK-EMF
SAMPLER
HIGH SIDE
GATE DRIVE
LOW SIDE
GATE DRIVE
V
FLT
VCO
PHI1
PHI2
PHI3
P1
P2
P3
N1
N2
N3
28
GND
PWM CURRENT
CONTROL
AND ONE SHOT
1
ISNS
26
CIOS
START-UP
AND
COMMUTATION
LOGIC
17
CSNS
25
BRAKE
8
6V
REF
7
27
PWM
SPEED
CONTROL
VSPEED
VREF
RREF
CPWM
CSC
5
6
VCO
16
15
RVCO
CVCO
20
RCVCO
14
VCC
12
F/
R
19
RINIT
CISC
21
+
–
0.6V
RUN
REV. 1.0 11/17/2000
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ML4428CP | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Sensorless Smart-Start⑩ BLDC PWM Motor Controller |
| ML4428CS | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Sensorless Smart-Start⑩ BLDC PWM Motor Controller |
| ML4428IP | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Sensorless Smart-Start⑩ BLDC PWM Motor Controller |
| ML4428IS | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Sensorless Smart-Start⑩ BLDC PWM Motor Controller |
| ML4428直流電機(jī)控制芯片 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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