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參數(shù)資料
| 型號： | LB11847 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | PWM Current Control Type Stepping Motor Driver |
| 中文描述： | PWM電流控制型步進(jìn)電機(jī)驅(qū)動器 |
| 文件頁數(shù)： | 14/16頁 |
| 文件大?。?/td> | 112K |
| 代理商： | LB11847 |
LB11847
No. 6183-14/16
4. Simultaneous ON prevention function
This IC incorporates a circuit to prevent feedthrough current when phase switching. For reference, the output ON and
OFF delay times at PHASE and ENABLE switching are given below.
Reference data * typical value
Equation when logic voltage V
CC
= 5 V
CR pin voltage E1 = V
CC
R/(R1+R2+R) [V]
Noise cancel time t
n
(R1+R2) C 1n {(E1-1.5)/(E1-4.0)} [s]
Switching OFF time t
off
–R C 1n (1.5/E1) [s]
Internal resistance at CR pin : R1 = 1 k
, R2 = 300
(typ.)
*The CR constant setting range in Figure 2 on page 15 is given for reference. It applies to a switching OFF time in the
range from 8 to 100
μ
s. The switching time can also be made higher than 100
μ
s. However, a capacitor value of more
than several thousand pF will result in longer noise canceling time, which can cause the output current to become higher
than the set current. The longer switching OFF time results in higher output current ripple, causing a drop in average
current and rotation efficiency. When keeping the switching OFF time within 100
μ
s, it is recommended to stay within
the CR constant range shown in Figure 2.
Internal configuration at CR pin
Figure 1
=
5. Noise canceler
This IC has a noise canceling function to prevent malfunction due to noise spikes generated when switching ON. The
noise cancel time t
n
is determined by internal resistance of the CR pin and the constant of the externally connected CR
components. The constant also determines the switching OFF time.
Figure 1 shows the internal configuration at the CR pin, and Figure 2 shows the CR pin constant setting range.
A12543
R:15 k
C:470 pF
300
CR pin
E1
One-shot multi-blanking
time circuit
R1
R2
1 k
V
CC
line
Sink side
Source side
PHASE switching
ON delay time
1.9
μ
s
0.8
μ
s
1.4
μ
s
0.9
μ
s
2.15
μ
s
1.2
μ
s
2.2
μ
s
1.8
μ
s
1.7
μ
s
1.35
μ
s
2.75
μ
s
5.8
μ
s
(Low ->
High)
PHASE switching
OFF delay time
ON delay time
(High -> Low)
OFF delay time
ENABLE switching
ON delay time
OFF delay time
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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/點(diǎn)火控制器和驅(qū)動器 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/點(diǎn)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 |
| 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 |
| LB11850VA | 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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