- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄43902 > LB1876 (SANYO SEMICONDUCTOR CO LTD) BRUSHLESS DC MOTOR CONTROLLER, 2.5 A, PDSO36 PDF資料下載
參數(shù)資料
| 型號： | LB1876 |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 運動控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 2.5 A, PDSO36 |
| 封裝： | 0.375 INCH, HSOP-36 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大小： | 163K |
| 代理商： | LB1876 |
LB1876
No.6201-11/12
8. FG input signal
Normally, one of the Hall sensor signals is input as an FG signal. If noise on the FG input is a problem, insert either a
capacitor or a filter consisting of a capacitor and a resistor. Although it is possible to exclude noise from the FG signal
by inserting a capacitor between the FGFIL pin and ground, if this pin's waveform is smoothed excessively, the circuit
may not be able to operate normally. Therefore, if a capacitor is used here, its value must be held to under 2200pF. If
the position of the capacitor's ground lead is inappropriate, problems due to noise may become more likely to occur.
Select the position carefully.
9. Constraint protection circuit
This IC includes a built-in constraint protection circuit to protect the IC and the motor during motor constraint. In the
start state, when the LD output is high for a fixed period (the unlocked state), the lower side transistor turns off. The
time is set by the capacitor connected to the CSD pin.
Set time (seconds)
≈ 120 × C (F)
If a 0.068
F capacitor is used, the protection time will be about 8 seconds. The set time must have a value that provides
an adequate margin relative to the motor start time. The protection circuit does not operate during braking implemented
by switching the clock frequency. Either switch to the stop state or turn off the power and restart to clear the constraint
protection state.
Since the CSD pin also functions as the initial reset pulse generation pin, if connected to ground the logic circuits will
be reset and speed control operation will not be possible. Therefore, if constraint protection is not used, connect CSD to
ground through a resistor of about 220k
and a capacitor of about 4700pF in parallel.
10. Phase lock signal
(1) Phase lock range
Since this IC does not have a counter in the speed control system, the speed error range in the phase locked state
cannot be determined solely by the IC's characteristics. (This is because of the influence of the acceleration of the
changes in the FG frequency.) If it is necessary to stipulate this for the motor, it will be necessary to measure this with
the actual motor. Since it is easier for speed errors to occur in the state where the FG acceleration is large, the largest
speed errors are thought to occur during lock pull-in at startup and when unlocked due to clock frequency switching.
(2) Phase lock signal mask function
When the LDSEL pin is set high or left open, transient lock signals (short low-level periods on the LD output) is
masked. This function masks short low-level periods due to hunting during pull-in and allows a stable lock signal to
be output. However, the lock signal is delayed by amount of masking time.
When the LDSEL pin is set low, transient unlock signals (short high-level periods on the LD output) is masked.
This function prevents short period high-level signals from being output.
The mask time is set with the capacitor connected between the CLD pin and ground.
Mask time (seconds)
≈ 0.9 × C (F)
A mask time of about 90ms can be set by using a capacitor of about 0.1F. If complete masking is required, the mask
time must be set large enough to provide ample margin. If masking is not required, leave the CLD pin open.
11. Power supply stabilization
Since this IC provides a large output current and adopts a switching drive technique, it can easily disrupt the power
supply line voltage. Therefore, capacitors with ample capacitance must be inserted between the VCC pins and ground.
If reverse control mode is selected during braking, the circuit will return current to the power supply. This means that
the power supply lines are even more susceptible to disruption. Since the power supply is most easily influenced during
lock pull-in at high motor speeds, this case requires particular care. Select capacitor values that are fully adequate for
this case.
If diodes are inserted in the power supply lines to prevent damage if the power supply is connected with reverse
polarity, the power supply voltage will be even more susceptible to disruption, and even larger capacitors must be used.
12. VREG stabilization
Insert a capacitor of at least 0.1
F to stabilize VREG, which is the control circuit power supply. The capacitor ground
must be connected as close as possible to the IC control block ground (the GND1 pin).
13. Error amplifier circuit components
Locate the error amplifier components as close to the IC as possible to minimize the influence of noise on this circuit.
Locate this circuit as far from the motor as possible.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LB1921 | BRUSHLESS DC MOTOR CONTROLLER, 3.5 A, PDIP28 |
| LB1928 | BRUSHLESS DC MOTOR CONTROLLER, 3.1 A, PDIP28 |
| LB1965M | BRUSHLESS DC MOTOR CONTROLLER, 1.5 A, PDSO14 |
| LB1987D | BRUSHLESS DC MOTOR CONTROLLER, 1.3 A, PDIP28 |
| LB1987M | BRUSHLESS DC MOTOR CONTROLLER, 1.3 A, PDSO36 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LB1876(36SOP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Controller Miscellaneous - Datasheet Reference |
| LB1876_09 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For Polygon Mirror Motors 3-phase Brushless Motor Driver |
| LB1876-MPB-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 |
| LB1876-TLM-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 |
| LB1877 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Brushless Motor Driver with Speed Control for Portable Cassette Recorders |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。