OnSemiLV8811三相BLDC马达驱动方案_图文

1、on semi lv三相bldc马达驱动方案时间：2016-10-17 10:14:13 作者：on semi 来源：中电网on semi公司的lv8811/13/14是通过180°正弦波驱动三相bldc马达驱动器，工作电压3.6 伏(v)至16v.6vs16 v,和3.6 v至16 v.器件由单个霍尔传感器控制，降低系统成本，电机 速度可通过一个脉宽调制(pwm)信号或一个直流电压设置，并具有过流，过压，欠压和过温等 保护功能，主要用在家电如冰箱的散热风扇，及游戏机和计算设备本文介绍了 lv8811/13/14 主要特性，框图，几种应用电路，以及lv8811g/13g/14j评估板

2、主要特性,电路图，材料清单和 pcb设计图.the lv8811g, lv8813g are a 3-phase bldc motors driver which are controlled by single hall sensor. a 180 degrees sinusoidal driving method is adopted and the ic can control motor with low vibration and the low noise. in addition, lead-angle adjustment is possible by external pin

3、s. lead-a ngle value and lead-angle slant can be adjusted in dependently. thus, the device can be driven by high efficiency and low noise with various motors. the power element to drive a motor is built-in and contributes to high efficiency by low on resista nee (0.5 q). the hall sen sor bias driver

4、 is equipped, and a hall ic is supported as well. as a method of the rotary speed control of the motor, direct-pwm pulse in put or dc-voltage in put can be chose n.lv8811/13/14 主要特性：3-phase full wave (sinusoidal) driveany practical combination of slot and pole can be handled, (e.g. 3s2p, 3s4p, 6s4p,

5、 6s8p, 12s8p, 9s12p and so on)built-in power fets (p-mos/n-mos)speed control function by direct pwm or dc voltage in putminimum in put pwm duty cycle can be con figured by voltage inputsoft start-up function and soft shutdown functionsoft pwm duty cycle transitionsbuilt-in current limit circuit and

6、thermal protect!on circuitregulated voltage output pin for hall sensor biasbuilt-in locked rotor protection and auto recovery circuitfg signal outputdynamic lead angle adjustment with respect to rotational speed lead-a ngle control parameters can be configured by voltage in puts.lv8811/13/14 典型应用:re

7、frigeratorpcgames图 1.lv8811g/13g 框图图2.采用一个霍尔传感器的lv8811g/13g三相bldc马达驱动电路图(1)图3.采用一个霍尔传感器的lv8811g/13g三相bldc马达驱动电路图(2)uowo图4.采用pwm/dc转换的速度控制的lv8811g/13g三相bldc马达驱动电路图lv8811g/13g/14j 评估板the lv8811g,lv8813g, and lv8814j evaluation board is designed to provide an easy and quick development platform for thr

8、ee phase single sensor bldc motor control applications using lv8811g, lv8813g, nad lv8814j. the board enables users to develop their customized system solution by utilizing various features of lv8811g,lv8813g, and lv8814j and provides real-time development capabilities.the lv8811g/13g/14j board cons

9、ists of the following i/o and components: 1 three phases motor output2. hall sensor bias output3. hall sensor in put4. pwm input5. fg output6. monitoring outputs and setting inputs (optional)7. configuration setting resistors图5丄v8811g评估板外形图lv8811g评估板主要特性： supports 12.0v (typ.) supply voltage speed c

10、ontrol input: pwm duty cycle selectable hall sensor type; sensor or ic o factory default: configured for sensor type configureable minimum pwm duty cycle o factory-default: 14% for enable (start) 8% fordisable (stop) con figurable lead angle range and its proportional con stant to rotational speed o factory-default: 15degree at the lowest fg frequency lead angle=0.15x/ff+15wopwr vccvonzd irf rfsvregqgnd cpwm vth ph2时koncwowc心-vtxmosk皿fobtle32po ggeeeec3e(muxmonl