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參數(shù)資料
| 型號(hào)： | L6229N |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 2.8 A, PDIP24 |
| 封裝： | PLASTIC, PDIP-24 |
| 文件頁數(shù)： | 6/25頁 |
| 文件大?。?/td> | 628K |
| 代理商： | L6229N |
L6229
14/25
Figure 16. 60° Hall Sensor Sequence.
3.6 TACHO
A tachometer function consists of a monostable, with constant off time (tPULSE), whose input is one Hall Effect
signal (H1). It allows developing an easy speed control loop by using an external op amp, as shown in Figure
18. For component values refer to Application Information section.
The monostable output drives an open drain output pin (TACHO). At each rising edge of the Hall Effect Sensors
H1, the monostable is triggered and the MOSFET connected to pin TACHO is turned off for a constant time
tPULSE (see Figure 17). The off time tPULSE can be set using the external RC network (RPUL, CPUL) connected
to the pin RCPULSE. Figure 19 gives the relation between tPULSE and CPUL, RPUL. We have approximately:
tPULSE = 0.6 RPUL CPUL
where CPUL should be chosen in the range 1nF … 100nF and RPUL in the range 20K
… 100K.
By connecting the tachometer pin to an external pull-up resistor, the output signal average value VM is propor-
tional to the frequency of the Hall Effect signal and, therefore, to the motor speed. This realizes a simple Fre-
quency-to-Voltage Converter. An op amp, configured as an integrator, filters the signal and compares it with a
reference voltage VREF, which sets the speed of the motor.
Figure 17. Tacho Operation Waveforms.
H1
H2
H3
H1
H3
H2
1
2
3b
4
5
6b
= H
= L
V
M
t
PULSE
T
------------------ V
DD
=
T
t PULSE
H1
VTACHO
H2
H3
VM
VDD
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| L6229PDTR | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 3-Phase DC 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 |
| L6229Q | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 DMOS Driver for 3-phase DC 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 |
| L6229QTR | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 DMOS driver 3-phrase DC 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 |
| L622C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:THYRISTOR MODULE|BRIDGE|HALF-CNTLD|CA|240V V(RRM)|46A I(T) |
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