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Motor drive device

A motor drive and motor technology, applied in the field of motor drive devices, can solve the problems of chip heat, motor drive device burnout, frequency change, etc.

Active Publication Date: 2015-02-04
AMTEK SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, as the operating speed of the chip increases, the frequency also becomes higher, causing the chip to generate a lot of heat.
However, high heat will cause the following problems: cause the chip to operate abnormally, or affect the surrounding circuits
In the same situation, in order to ensure that the motor itself can be restarted, it is usually pushed with the maximum torque when restarting. In this case, it will be the same as when the power is turned on. If it is a high-power motor or the internal resistance is relatively small If the motor is locked, it will generate a large current at the moment of locking and starting, and it is also possible to burn the motor drive device when it is locked and restarted, such as Figure 1b shown

Method used

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Embodiment Construction

[0046] The present invention mainly discloses a motor driving device with functions of slow start when power on and slow start when locking. The output of the motor drive device is determined by counting the motor speed signal. Because the present invention is achieved by adding a circuit with power-on slow start and lock slow start in the general motor drive device; so the motor control circuit and the motor output unit circuit in the motor drive device are different from those of the prior art. The use is the same, so the detailed circuits of the motor control circuit and the motor output unit are not shown in the figure. In addition, the diagrams in the following texts are not completely drawn according to the actual relevant dimensions, and their function is only to express the schematic diagrams related to the characteristics of this creation.

[0047] First, please refer to figure 2 and image 3 ,in figure 2 It is a schematic diagram of an embodiment of a motor driv...

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Abstract

The invention relates to a motor drive device which is composed of a control unit, a soft start unit and an output unit. When external control signals are input to the soft start unit, the soft start unit produces an internal control signal and a switch-on initial signal; after the switch-on initial signal is produced, the control unit sends output motor rotating speed signals to the soft start unit; and after the soft start unit calculates the plurality of the motor rotating speed signals (FG), the soft start unit selects to output an external control signal or an internal control signal to the output unit to drive a motor to rotate.

Description

technical field [0001] The present invention relates to a motor driving device, in particular to a motor driving device with a motor power-on slow start and a lock-up slow start. The motor speed signal is counted by passing an external PWM control signal through a slow start unit. Finally, to determine the output of the motor drive device, in order to achieve the purpose of power-on slow start and lock-up slow start. Background technique [0002] In recent years, the rapid development of personal computers (Personal Computer, PC), portable computers (Portable Computer / Note-Boob, NB) or workstations (Work Station) has led to a sharp increase in the operating speed of computing chips, such as: central Processing unit (Central Processor Unit, CPU), digital signal processor (Digital Signal Processor, DSP). Therefore, as the operating speed of the chip increases, the frequency also increases, causing the chip to generate a large amount of heat. However, high heat will cause the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P1/18
Inventor 李灯辉余国庸罗振斌
Owner AMTEK SEMICON