LV8111V PDF资料下载(5/13 页)BRUSHLESS DC MOTOR CONTROLLER, 3 A, PDSO44

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参数资料

型号：	LV8111V
元件分类：	运动控制电子
英文描述：	BRUSHLESS DC MOTOR CONTROLLER, 3 A, PDSO44
封装：	0.275 INCH, SSOP-44
文件页数：	5/13页
文件大小：	288K
代理商：	LV8111V

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LV8111V

11. Power Supply Stabilization

Since this IC is used in applications that draw large output currents and adopts the drive method by switching, the

power-Supply line is subject to fluctuations. Therefore, capacitors with capacitances adequate to stabilize the

power-supply voltage must be connected between the VCC pin and GND. The ground-side a capacitor must be

connected as close to the GND2 pin of power GND as possible. If it is impossible to connect a capacitor (electrolytic

capacitor) near the pin, the ceramic capacitor of about 0.1

μF must be connected as close to the pin as possible.

If diodes are inserted in the power-supply line to prevent IC destruction due to reverse power supply connection,

Since this makes the power-supply voltage even more subject to fluctuations, even larger capacitors will be required.

12. VREG Stabilization

To stabilize the VREG voltage that is the power supply of the control circuit, connect a capacitor of 0.1

μF or more.

GND of the capacitor must be attached as close to the control block GND (GND1 pin) of the IC as possible.

13. Error Amplifier

External components of the error amplifier block must be placed as close to the IC as possible to reduce influence of

noise.

Also, these components must be placed as separate from the motor as possible.

14. IC Reverse Metal

To improve heat radiation, the metal part on the reverse of IC is stuck fast to the substrate by using highly-conduction

solder.

15. SDCC (Speed Detection Current Control) function

The SDCC circuit controls the speed detection current. It limits the current to 87.5% of the specified current to reduce

acceleration of the motor when the rotation of the motor exceeds 95% of its target speed. This enables stabilized phase

lock pull-in and minimizes the variation in startup time.

The SDCC function is disabled by setting F/R low. It is enabled by setting F/R high or open.

Notes: If the selected state of SDCC does not match the rotational direction of the motor, it is necessary to solve the

problem by changing the HALL bias.

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products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition

ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd.

products described or contained herein.

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semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or

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safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not

limited to protective circuits and error prevention circuits for safe design, redundant design, and structural

design.

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above.

Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed

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