Drive circuit for fan oscillating motor
A drive circuit, fan shaking head technology, applied in the direction of machine/engine, excitation or armature current control, mechanical equipment, etc., can solve the problems of large number of discrete components, low circuit integration, large circuit board space, etc.
Inactive Publication Date: 2016-11-23
SINOTECH MIXIC ELECTRONICS
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Problems solved by technology
[0003] The invention provides a driving circuit for a fan oscillating motor. The invention solves the problem of the existing similar driving circuit, which has a large number of discrete components, high cost, high failure rate, low circuit integration, and takes up a large circuit. Board Space Issues
Method used
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Embodiment Construction
[0012] The present invention will be described in detail below with the best embodiment 。
[0013] like figure 2 As shown, a driving circuit for a fan shaking head motor includes a regulated power supply, a control chip (MCU), a driving chip and a load motor; the driving chip includes two input terminals (INA, INB), and two output terminals (OA, OB), a low-voltage logic control power supply terminal (VCC), a power drive power supply terminal (VDD), and two ground terminals; the input terminals (INA, INB) of the drive chip are connected to the control chip (MCU); The output terminals (OA and OB) of the drive chip are connected to the load motor; the logic power supply of the drive chip and the power supply of the control chip are connected to the output of the stabilized power supply. The power supply end of the drive chip is directly connected to the power input port. The drive chip internally adopts PMOS as the high-side switch of the output power stage, and adopts NMO...
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The invention discloses a drive motor for a fan oscillating motor, and relates to a circuit structure, in particular to a drive circuit for a fan oscillating motor. The drive circuit comprises a stabilized voltage supply, a control chip (MCU), a drive chip and a load motor, wherein the drive chip comprises two input ends (INA and INB), two output ends (OA and OB), a low-voltage logic control power supply terminal (VCC), a power drive power supply terminal (VDD) and two ground ends; the input ends of the drive chip are connected with the control chip; the output ends of the drive chip are connected to the load motor; a logic power supply of the drive chip and a power supply of the control chip are connected with output of the stabilized voltage supply; and a power source terminal of the drive chip is directly connected to a power supply input port. By the drive circuit for the fan oscillating motor, the problems that an existing similar drive circuit is multiple in discrete components, relatively high in cost and relatively high in failure rate, the integration level of the circuit is high, and a relatively large space of a circuit board is occupied are solved.
Description
technical field [0001] The invention relates to a circuit structure, in particular to a drive circuit of a fan oscillating motor. Background technique [0002] In the existing driving circuit of the fan shaking head motor, the driving circuit is combined with discrete components. The drive signal output by the control chip passes through the current limiting resistor, and then passes through the triode to drive the shaking head motor. At the same time, in order to eliminate the influence of the reverse electromotive force generated by the motor load on the triode and the control chip, it is necessary to set up a diode for current freewheeling. like figure 1 As shown, the existing drive circuit has a large number of discrete components, high cost, high failure rate, low circuit integration, and occupies a large circuit board space. Contents of the invention [0003] The invention provides a driving circuit for a fan oscillating motor. The invention solves the problem of ...
Claims
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IPC IPC(8): H02P7/28F04D27/00F04D25/10
Inventor 王敬冉建桥刘志成
Owner SINOTECH MIXIC ELECTRONICS