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參數(shù)資料
| 型號(hào)： | LB11827 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Three-Phase Brushless Motor Driver for OA Products |
| 中文描述： | 三相無(wú)刷電機(jī)驅(qū)動(dòng)的辦公自動(dòng)化產(chǎn)品 |
| 文件頁(yè)數(shù)： | 9/11頁(yè) |
| 文件大小： | 144K |
| 代理商： | LB11827 |
Pin No.
Pin
Function
Equivalent circuit
No. 7110-9/11
LB11827
Continued from preceding page.
GND pin (Other than the output)
20
GND1
2 k
27
V
REG
2
300
300
22
24
26
21
23
25
V
REG
Hall amplifier input.
IN+ > IN– is the input high state, and the reverse is the input low
state.
It is recommended that the Hall signal has an amplitude of 100m
Vp-p (differential) or more.
Connect a capacitor between the IN+ and IN– inputs if there is
noise in the Hall sensor signals.
22
21
24
23
26
25
IN1+
IN1–
IN2+
IN2–
IN3+
IN3–
Forward/reverse control pin
Low: 0 V to 1.5 V
High: 3.5 V to VREG
H level when open
Hysteresis width about 0.5 V
27
F/R
Function Description
1. Speed control circuit
This IC performs speed control by using both the speed discriminator circuit and PLL circuit. The speed control circuit
outputs the error signal once for every two cycles of FG (one FG cycle counted). The PLL circuit outputs the phase
error signal once for each cycle of FG.
As the FG servo frequency is calculated as follows, the motor speed is set with the number of FG pulses and clock
frequency.
f
FG
(servo) = f
CLK
/512
f
CLK
: Clock frequency
This IC achieves variable speed control with ease when combined with LB11825M.
2. Output drive circuit
This IC employs a direct PWM drive method to minimize the power loss at output. The output Tr is always saturated
at ON, and the motor drive force is adjusted through change of the duty at which the output is turned ON. Since the
output PWM switching is made with the lower-side output Tr, it is necessary to connect the schottky diode between
OUT and V
CC
(because the through current flows at an instant when the lower-side Tr is turned ON if the diode with a
short reverse recovery time is not used). The diode between OUT and GND is incorporated. When the large output
current presents problem (waveform disturbance at kickback on the lower side), connect a commutating diode or
schottky diode externally.
3. Current limiting circuit
The current limiting circuit performs limiting with the current determined from I = V
RF
/Rf (V
RF
= 0.5 Vtyp, Rf:
current detector resistance) (that is, this circuit limits the peak current).
Limiting operation includes decrease in the output on-duty to suppress the current.
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相關(guān)代理商/技術(shù)參數(shù) |
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| LB11847 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PWM Current Control Type Stepping Motor Driver |
| LB11847_08 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PWM Current Control Type Stepping Motor Driver |
| LB11847-E | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 10-45VStepping Motor Driver 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 |
| LB11847L-E | 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 |
| LB11850V | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Digital IC For Fan Motor Single-Phase Full-Wave Pre-Driver with Speed Control Function |
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