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參數(shù)資料
| 型號： | LB1929 |
| 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： | 三相無刷電機驅(qū)動的辦公自動化產(chǎn)品 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大小： | 104K |
| 代理商： | LB1929 |
7. PWM frequency
PWM frequency is determined from the capacity C (F) of capacitor connected to the PWM pin.
fPWM .= 1/(14400
×
C)
It is recommended to keep the PWM frequency at 15 – 25 kHz. GND of a capacitor to be connected must be connected
to the GND1 pin with the shortest possible wiring.
8. Hall input signal
The Hall input requires the signal input with an amplitude exceeding the hysteresis width (42 mV max). Considering
the effect of noise, the input with the amplitude of 100 mV or more is recommended.
When the output waveform is disturbed due to noise effects at a time of changeover of the output phase, connect a
capacitor between Hall input pins (+ and –) at a point as near as possible to the pin.
9. F/R changeover
Motor rotation direction can be changed over with the F/R pin. When changing F/R while the motor is running, pay
attention to following points.
For the through current at a time of changeover, the countermeasure is taken using a circuit. However, it is
necessary to prevent exceeding of the rated voltage (30 V) due to rise of V
CC
voltage at a time of changeover
(because the motor current returns instantaneously to the power supply). When this problem exists, increase the
capacity of a capacitor between V
CC
and GND.
When the motor current exceeds the current limit value after changeover, the lower-side Tr is turned OFF. But, the
upper-side Tr enters the short-brake condition and the current determined from the motor counter electromotive
voltage and coil resistance flows. It is necessary to prevent this current from exceeding the rated current (3.5 A).
(F/R changeover at high rotation speed is dangerous.)
10. Motor lock protection circuit
A motor lock protection circuit is incorporated for protection of IC and motor when the motor is locked.
When the LD output is “H” (unlocked) for a certain period in the start condition, the lower-side Tr is turned OFF. This
time is set with the capacity of the capacitor connected to the CSD pin. The time can be set to about 3.3 seconds with
the capacity of 10 μF (variance about ±30%).
Set time(s) .= 0.33
×
C (μF)
When the capacitor used has a leak current, due consideration is necessary because it may cause error in the set time,
etc.
Cancelling requires either the stop condition or re-application of power supply (in the stop condition). When the lock
protection circuit is not to be used, connect the CSD pin to GND.
When the stop period during which lock protection is to be cancelled is short, the charge of capacitor cannot be
discharged completely and the lock protection activation time at restart becomes shorter than the set value. It is
necessary to provide the stop time with an allowance while referring to the following equation. (The same applies to
restart in the motor start transient condition.)
Stop time (ms)
≥
15
×
C (μF)
11. Power supply stabilization
This IC has a large output current and is driven by switching, resulting in ready oscillation of the power line. It is
therefore necessary to connect a capacitor with a sufficient capacity (several ten μF or more) between the V
CC
pin and
GND for stabilization. GND of a capacitor to be connected must be connected to the GND2 pin (GND of the power
block) at a point as near as possible to the pin. If a capacitor (electrolytic) cannot be provided near the pin because of
existence of a heat sink, etc., provide a ceramic capacitor of about 0.1 μF near the pin.
When a diode is inserted in the power line to prevent breakdown due to reverse connection of power supply, the power
line is particularly readily oscillated. The larger capacity need be selected.
12. VREG stabilization
The VREG pin (5 V regulator output) that is a power supply for control circuit must be provided with a stabilizing
capacitor (about 0.1 μF). GND of a capacitor to be connected must be connected to the GND1 pin with the shortest
possible wiring.
13. Constant of integrating amplifier parts
Arrange the integrating amplifier external parts as near as possible to IC to protect them from noise effects. Arrange
them by keeping the largest possible distance from the motor.
No. 7099-10/12
LB1929
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LB1929_08 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For Office Automation Equipment 3-phase Brushless Motor Driver |
| LB1929-E | 功能描述:馬達(dá)/運動/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 |
| LB1930 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Channel Low Saturation Voltage Forward/Reverse Motor Driver |
| LB1930M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Channel Low Saturation Voltage Forward/Reverse Motor Driver |
| LB1930M_11 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Low-Voltage, Low-Saturation Bidirectional Motor Driver |
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