- 您现在的位置：买卖IC网 > PDF目录149395 > LB11872H (SANYO SEMICONDUCTOR CO LTD) BRUSHLESS DC MOTOR CONTROLLER, 1.2 A, PDSO30 PDF资料下载
参数资料
| 型号： | LB11872H |
| 厂商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 1.2 A, PDSO30 |
| 封装： | HSOP-28/30 |
| 文件页数： | 2/11页 |
| 文件大小： | 125K |
| 代理商： | LB11872H |
LB11872H
No.7257-10/11
6. Rotor Constraint Protection Circuit
This IC provides a rotor constraint protection circuit to protect the IC itself and the motor when the motor is constrained
physically, i.e. prevented from turning. If the FG signal (edges of one type (rising or falling edges) on the IN1 signal)
does not switch within a fixed time, output drive will be turned off. The time constant is determined by the capacitor
connected to the CSD pin.
< time constant (in seconds) > ≈ 30.5 × 1.57 × CCSD (μF)
If a 0.02
μF capacitor is used, the protection time will be about 1.05 seconds.
To clear the rotor constraint protection state, the IC must be set to the stopped state or the power must be turned off and
reapplied. If there is noise present on the FG signal during the constraint time, the rotor constraint protection circuit
may not operate normally.
7. Phase Lock Signal
(1) Phase lock range
Since this IC does not include a counter or similar functionality in the speed control system, the speed error range in
the phase locked state cannot be determined solely by IC characteristics. (This is because the acceleration of the
changes in the FG frequency influences the range.) When it is necessary to stipulate this characteristic for the motor,
the designer must determine this by measuring the actual motor state. Since speed errors occur easily in states
where the FG acceleration is large, it is thought that the speed errors will be the largest during lock pull-in at startup
and when unlocked due to switching clock frequencies.
(2) Masking function for the phase lock state signal
A stable lock signal can be provided by masking the short-term low-level signals due to hunting during lock pull-in.
However, this results in the lock state signal output being delayed by the masking time.
The masking time is determined by the capacitor inserted between the CSD pin and ground.
< masking time (seconds) > ≈ 6.5 × 1.57 × CCSD (μF)
When a 0.022
μF capacitor is used, the masking time will be about 225ms. In cases where complete masking is required,
a masking time with fully adequate margin must be used.
8. Initial Reset
To initially reset the logic circuits in start mode, the IC goes to the reset state when the CSD pin voltage goes to zero
until it reaches 0.63V. Drive output starts after the reset state is cleared. The reset time can be calculated to a good
approximation using the following formula.
< reset time (seconds) > ≈ 0.13 × CCSD (μF)
A reset time of over 100
μs is required.
9. Current Limiter Circuit
The current limit value is determined by the resistor Rf inserted between the RF pin and ground.
ILIM = VL/Rf VL = 0.59V (typical) (during acceleration) and 0.37V (typical) (during deceleration)
10. Power Supply Stabilization
An adequately large capacitor must be inserted between the VCC pin and ground for power supply stabilization. If
diodes are inserted in the power supply lines to prevent destruction of the device if the power supply is connected with
reverse polarity, the power supply line levels will be even more easily disrupted, and even larger capacitors must be
used.
If high-frequency noise is a problem, a ceramic capacitor of about 0.1
μF must also be inserted in parallel.
11. VREG Stabilization
A capacitor of at least 0.1
μF must be used to stabilize the VREG voltage, which is the control circuit power supply.
The capacitor must be connected as close as possible to the pins.
12. Error Amplifier External Component Values
To prevent adverse influence from noise, the error amplifier external components must be located as close to the IC as
possible.
相关PDF资料 |
PDF描述 |
|---|---|
| LX1823CDW | 2 A SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, PDSO16 |
| LX1823IQ | 2 A SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, PQCC20 |
| LS4601-9RD9TB1 | 1-OUTPUT 100 W AC-DC PWR FACTOR CORR MODULE |
| LM3354MM-1.8/NOPB | SWITCHED CAPACITOR REGULATOR, 1400 kHz SWITCHING FREQ-MAX, PDSO10 |
| LX1555ID-TR | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO14 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LB11872H_08 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:For Polygonal Mirror Motors Three-Phase Brushless Motor Driver |
| LB11872H-MPB-E | 功能描述:马达/运动/点火控制器和驱动器 RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| LB11872H-TLM-E | 功能描述:马达/运动/点火控制器和驱动器 RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| LB11872V | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Monolithic Digital IC For Polygonal Mirror Motors Scanner Driver IC |
| LB11873 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Monolithic Digital IC For Polygonal Mirror Motors Three-Phase Brushless Motor Driver |
发布紧急采购，3分钟左右您将得到回复。