參數(shù)資料
型號(hào)： KA2811C
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類： 運(yùn)動(dòng)控制電子
英文描述： 12V Spindle Motor and Voice Coil Motor Driver(心軸電機(jī)和音圈電機(jī)驅(qū)動(dòng)器)
中文描述： VOICE COIL MOTOR CONTROLLER, 2 A, PQFP48
封裝： 14 X 14 MM, HEAT SINK, QFP-48
文件頁數(shù)： 15/28頁
文件大?。?/td> 313K
代理商： KA2811C
KA2811C
15
1-1. RPM of Motor
Here,
N
O
= RPM
fck = Reference clock (Pin no. 46),
D1 = Divided clock ratio,
D2 = Divided zero cross signal ratio,
P
O
= Motor pair pole (8 pole motor: P
O
= 4)
Ncnt = PLL counted value
Pin 24 = 0V
→
Ncnt = 2084
Pin 24 = 5V
→
Ncnt = 1736
ex)
1-2. Speed error (%)
Here, I
HOLD
= Leakage current (Pin no. 2)
ex) At the KA2811C
RPMerror = 100
μ
A
×
10k
×
100 = 0.1%
7. F/V converter
This circuit converts the digital output signals from the speed control block into DC voltage and then feeds the voltages to
buffer amplifier.
8. Control amp
It compensates the total gain and phase of SPM circuit.
It operates sense amp during start-up, and incorporates output voltage and feedback loop by F/V input during running.
9. Sense amp
It determines maximum output current during the start-up.
10. Ready
It generates high Ready output when motor speed reaches target RPM.
11. Brake
While the spindle motor is in rotation at the target RPM. the signal voltage at the pin 1 sets to the low state that the brake func-
tion is not activated.
N
O
Ncnt
P
O
×
D2
×
-----------------------------------------
=
fck
5MHz Pin no. 24 = 5V, Mode (Ncnt = 1736)
Ncnt
=
N
O
------------
1.875
×
5400.346rpm
5400rpm
=
=
RPMerror
I
Ncnt
I
HOLD
---------------
100
×
=
R10
R11
+
(
)
100
×
×
=
相關(guān)PDF資料
PDF描述
KA2820D Stepping Motor Driver(步進(jìn)馬達(dá)驅(qū)動(dòng)器)
KA2821D The KA2821D is a monolithic integrated circuit, and suit able as a two-phase stepping motor driver of a 3.5-inch FDD system
KA2822BD 3-Phase BLDC Motor Driver
KA2822BDTF 3-Phase BLDC Motor Driver
KA2822D 3-Phase BLDC Motor Driver
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
KA2821D 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:The KA2821D is a monolithic integrated circuit, and suit able as a two-phase stepping motor driver of a 3.5-inch FDD system
KA2822BD 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 BLDC Motor Driver 3 Phase 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
KA2822BDTF 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 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
KA2822CD 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 BLDC Motor Driver 3 Phase 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
KA2822CDTF 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:3-Phase BLDC Motor Driver
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