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參數(shù)資料
| 型號： | LB1695 |
| 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 |
| 中文描述： | 三相無刷電機(jī)驅(qū)動器 |
| 文件頁數(shù)： | 5/7頁 |
| 文件大?。?/td> | 99K |
| 代理商： | LB1695 |
Block Diagram and Peripheral Circuits
LB1695 Functional Description
1.Hall element input circuits
The Hall element input circuits are differential amplifiers with a hysteresis of about 30 mV (typical). The operating DC
level must be within the common-mode input voltage range (1.5 V to V
CC
– 1.8 V). We recommend providing input
levels that exceed the hysteresis by at least a factor of three (120 to 160 mVp-p) to assure that circuit operation is not
affected by noise. If the ability to withstand noise is determined to be a problem during noise evaluation or other
testing, insert capacitors (of about 0.01 μF) between the Hall input IN
+
and IN
–
pins.
2.Protection circuit
2.1 Low-voltage protection circuit
The sink side output transistors are turned off if the V
CC
voltage falls below the stipulated voltage (V
LVSD
). This
circuit prevents incorrect operation when the V
CC
voltage is reduced.
2.2 Thermal shutdown circuit
The sink side output transistors are turned off if the junction temperature exceeds the stipulated temperature (TSD).
This circuit prevents the IC from being destroyed by overheating. Applications must be designed so that this circuit
does not operate except in unusual situations.
3.FG output circuit
The LB1695 combines the IN1, IN2, and IN3 inputs and then wave shapes the combined signal. The FG1 output has
the same frequency as the Hall inputs, and the FG2 output has a frequency three times that of the Hall inputs.
4.Forward/reverse control circuit
This circuit was designed with the assumption that the direction will not be switched from the F/R pin while the motor
is turning. If the direction is switched while the motor is turning, through currents will flow in the output and ASO will
become a problem. We recommend only using F/R switching when the V
M
power supply is in the off state, i.e. with the
motor in the stopped state.
5.V
CC
and V
M
power supplies
If the speed with which the power-supply voltages (V
CC
and V
M
) rise when power is first applied is too fast, through
currents will flow in the output and ASO will become a problem. Applications must assure that the power supply rise
speeds do not exceed 0.04 V/μs (
V
CC
/
t) and 0.16 V/μs (
V
M
/
t). When applying power, it is desirable to apply
V
CC
first and then apply V
M
. When turning the power off, it is desirable to first turn off V
M
, then to wait for the motor
to stop, and only then turn off V
CC
. If V
CC
is turned off after V
M
is turned off but while the motor is still turning due to
No. 5678-5/7
LB1695
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LB1695D | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:LB1695D |
| LB1695M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:DC Fan Motor Driver |
| LB1696 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:3-phase Brushless Motor Driver |
| LB1696-E | 功能描述:馬達(dá)/運(yùn)動/點火控制器和驅(qū)動器 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 |
| LB16CGG01 | 功能描述:按鈕開關(guān) SPDT ON-ON GRAY ROUND BODY ONLY RoHS:否 制造商:C&K Components 觸點形式:2 NC - 2 NO 開關(guān)功能:ON ? OFF 電流額定值:4 A 電壓額定值 AC:12 V to 250 V 電壓額定值 DC:12 V to 50 V 功率額定值: 安裝風(fēng)格:Through Hole 照明:Illuminated 照明顏色:None IP 等級:IP 40 端接類型:Solder 觸點電鍍:Silver 執(zhí)行器:Square 蓋顏色: 封裝: 可燃性等級:UL 94 V-0 |
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