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參數(shù)資料
| 型號： | TDA1085 |
| 廠商： | Motorola, Inc. |
| 英文描述： | UNIVERSAL MOTOR SPEED CONTROLLER |
| 中文描述： | 通用電機轉(zhuǎn)速控制器 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大小： | 170K |
| 代理商： | TDA1085 |
TDA1085C
6
MOTOROLA ANALOG IC DEVICE DATA
Ramps Generator – (Pin 6)
If only a high acceleration ramp is
needed, connect Pin 6 to ground.
When a Distribute ramp should occur, preset a voltage on Pin 6
which corresponds to the motor speed starting ramp point.
Distribution (or low ramp) will continue up to the moment the motor
speed would have reached twice the starting value.
The ratio of two is imposed by the IC. Nevertheless, it could be
externally changed downwards (Figure 6) or upwards (Figure 7).
The distribution ramp can be shortened by an external resistor from
VCC charging CPin 7, adding its current to the internal 5.0
μ
A
generator.
Power Circuits
Triac Triggering pulse amplitude must be determined by Pin 13
resistor according to the needs in Quadrant IV. Trigger pulse duration
can be disturbed by noise signals generated by the triac itself, which
interfere within Pins 14 and 16, precisely those which determine it.
While easily visible, this effect is harmless.
The triac must be protected from high AC line dV/dt during external
disturbances by 100 nF x 100
network.
Shunt resistor must be as non–inductive as possible. It can be made
locally by using constantan alloy wire.
When the load is a DC fed universal motor through a rectifier bridge,
the triac must be protected from commutating dV/dt by a 1.0 to
2.0 mH coil in series with MT2.
Synchronization functions are performed by resistors sensing AC
line and triac conduction. 820 k values are normal but could be
reduced down to 330 k in order to detect the “zeros” with accuracy
and to reduce the residual DC line component below 20 mA.
Current Limitation
The current limiter starts to discharge Pin 7 capacitor (reference
speed) as the motor current reaches the designed threshold level.
The loop gain is determined by the resistor connecting Pin 3 to the
series shunt. Experience has shown that its optimal value for a
10 Arms limitation is within 2.0 k
. Pin 3 input has a sensitivity in
current which is limited to reasonable values and should not react to
spikes.
If not used, Pin 3 must be connected to a maximum positive voltage
of 5.0 V rather than be left open.
Loop Stability
The Pin 16 network is predominant and must be adjusted
experimentally during module development. The values indicated in
Figure 4 are typical for washing machine applications but accept
large modifications from one model to another. R16 (the sole
restriction) should not go below 33 k, otherwise slew rate limitation
will cause large transient errors for load steps.
Figure 2. Acceleration Ramp
Figure 3. Programmable Double
Acceleration Ramp
V
VPin 5
VPin 7
t
0
VPin 6 = VDS
VDF = 2 VDS
0
VDS
VDF
High Acceleration
Ramp
Distribution
Low Acceleration
Ramp
High Acceleration
Ramp
VPin 5 fixed set value
Speeds
t
VPin 4
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| TDA1085C | UNIVERSAL MOTOR SPEED CONTROLLER |
| TDA1085CD | UNIVERSAL MOTOR SPEED CONTROLLER |
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| TDA1512 | 12 TO 20 W HI FI AUDIO POWER AMPLIFIER |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA1085C | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Universal 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TDA1085CD | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:UNIVERSAL MOTOR SPEED CONTROLLER |
| TDA1085CG | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Universal Motor Speed Controller 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TDA1085CG | 制造商:ON Semiconductor 功能描述:Power Supply IC |
| TDA10H0JB1 | 功能描述:DIP 開關(guān)/ SIP 開關(guān) SM HalfPitch DIP Swt SPST, 10 POS, JTerm RoHS:否 制造商:Omron Electronics 位置數(shù)量:10 開關(guān)類型:DIP 執(zhí)行器:Rotary 端子節(jié)距:2.54 mm 觸點形式: 端接類型:Solder Pin 電流額定值:100 mA 電壓額定值 DC: 工作溫度范圍: 安裝:Through Hole |
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