參數(shù)資料
型號(hào)： ML4425
廠商： Fairchild Semiconductor Corporation
英文描述： Sensorless BLDC Motor Controller
中文描述： 傳感器無(wú)刷直流電機(jī)控制器
文件頁(yè)數(shù)： 8/16頁(yè)
文件大?。?/td> 167K
代理商： ML4425
ML4425
PRODUCT SPECIFICATION
8
REV. 1.0.2 7/2/01
Voltage Controlled Oscillator (VCO)
The VCO provides a TTL compatible clock output on the
VCO/TACH pin proportional to the VCO input voltage at the
SPEED FB pin. The proportion of frequency to voltage
(VCO constant, K
v
) is set by an 80.6k
resistor on R
VCO
and a capacitor on C
VCO
as shown in Figure 5. R
VCO
sets up
a current proportional the VCO input voltage at SPEED FB.
This current is used to charge and discharge C
VCO
between
the threshold voltages of 2.3V and 4.3V. The resulting trian-
gle wave on C
VCO
corresponds to the clock on VCO. K
v
should be set so that the VCO output frequency corresponds
to the maximum commutation frequency or maximum motor
speed when the VCO input is equal to or slightly less than
V
REF
. C
VCO
is calculated using the following equation:
The closest standard value that is equal to or less than the
calculated C
VCO
should be used.
C
VCO
6.5V
----------------------------------------------------------------------------------
3.101
×
10
6
–
Hz
Farad
×
0.05RPM
-------------
N
×
SPEED
MAX
×
=
(2)
Table 1. Commutation State Functions
State
Outputs
LC
OFF
ON
ON
OFF
OFF
OFF
OFF
Input
Sampling
LA
OFF
OFF
OFF
ON
ON
OFF
OFF
LB
ON
OFF
OFF
OFF
OFF
ON
ON
HA
ON
ON
OFF
OFF
OFF
OFF
ON
HB
OFF
OFF
ON
ON
OFF
OFF
OFF
HC
ON
OFF
OFF
OFF
ON
ON
OFF
R
A
B
C
D
E
F
N/A
FB B
FB A
FB C
FB B
FB A
FB C
Figure 4. Output Commutation Sequence Timing Diagram
Cycle 1
–
Full Commutation, Cycle 2
–
Commutation with 50% PWM Duty Cycle
HIGH
SIDE
DRIVE
OUTPUTS
HA
HB
HC
LOW
SIDE
DRIVE
OUTPUTS
LA
A
B
C
D
E
F
A
B
C
D
E
F
LB
LC
相關(guān)PDF資料
PDF描述
ML4425CP Sensorless BLDC Motor Controller
ML4425CS Sensorless BLDC Motor Controller
ML4425IP Sensorless BLDC Motor Controller
ML4425IS Sensorless BLDC Motor Controller
ML4426 Bi-directional Sensorless BLDC Motor Controller(雙向無(wú)傳感無(wú)刷直流電機(jī)控制器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ML4425CH 制造商:MICRO-LINEAR 制造商全稱(chēng):MICRO-LINEAR 功能描述:Sensorless BLDC Motor Controller
ML4425CP 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 BLDC Motor Control Sensorless RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
ML4425CS 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 BLDC Motor Control Sensorless RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
ML4425CSX 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 BLDC Motor Control Sensorless RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
ML4425IH 制造商:MICRO-LINEAR 制造商全稱(chēng):MICRO-LINEAR 功能描述:Sensorless BLDC Motor Controller
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*