TB6612FNG驱动模块使用说明

TB6612FNG模块使用说明慧净电子简单说明•电机电源接口带有反接保护电路.相对于传统的L298N效率上提高很多,体积上也大副减少,当然也就显得更加娇贵,所以我们建议有一定动手能力的朋友使用,接线的时候务必细心细心再细心,本模块全部测试OK才会售出,所以不接受任何形式的退换货,此点不能接受的朋友请慎拍.希望大家理解.TB6612的的用法TB6612的的用法：TB6612是双驱动，也就是可以驱动两个电机下面分别是控制两个电机的IO口STBY口接单片机的IO口清零电机全部停止，置1通过AIN1AIN2，BIN1，BIN2来控制正反转VM接12V以内电源VCC接5V电源GND就不多说了啊驱动1路PWMA接单片机的PWM口模块原理图控制逻辑表1TB6612FNG简介•TB6612FNG是东芝半导体公司生产的一款直流电机驱动器件，它具有大电流MOSFET-H桥结构，双通道电路输出，可同时驱动2个电机。•TB6612FNG每通道输出最高1A的连续驱动电流，启动峰值电流达2A／3A(连续脉冲／单脉冲)；4种电机控制模式：正转／反转／制动／停止；PWM支持频率高达100kHz；待机状态；片内低压检测电路与热停机保护电路；工作温度：-20～85℃；SSOP24小型贴片封装。.如上图所示，TB6612FNG的主要引脚功能：AINl／AIN2、BIN1／BIN2、PWMA／PWMB为控制信号输入端；AO1／A02、B01／B02为2路电机控制输出端；STBY为正常工作／待机状态控制引脚；VM(3～13.5V)和VCC(2．7～5．5V)分别为电机驱动电压输入和逻辑电平输入端。TB6612FNG是基于MOSFET的H桥集成电路，效率远高于晶体管H桥驱动器。相比L293D每通道平均600mA的驱动电流和1．2A的脉冲峰值电流，它的输出负载能力提高了一倍。相比L298N的热耗性和外围二极管续流电路，它无需外加散热片，外围电路简单，只需外接电源滤波电容就可以直接驱动电机，利于减小系统尺寸。对于PWM信号，高达100kHz的频率相比以上2款芯片的5kHz和40kHz也具有非常大的优势.Overview•TheTB6612FNG(308kpdf)isagreatdualmotordriverthatisperfectforinterfacingtwosmallDCmotorssuchasourmicrometalgearmotorstoamicrocontroller,anditcanalsobeusedtocontrolasinglebipolarsteppermotor.TheMOSFET-basedH-bridgesaremuchmoreefficientthantheBJT-basedH-bridgesusedinolderdriverssuchastheL298NandSanyo’sLB1836M,whichallowsmorecurrenttobedeliveredtothemotorsandlesstobedrawnfromthelogicsupply(theLB1836stillhastheTB6612beatforreallylow-voltageapplications).OurlittlebreakoutboardgivesyoudirectaccesstoallofthefeaturesoftheTB6612FNGandaddspowersupplycapacitorsandreversebatteryprotectiononthemotorsupply(note:thereisnoreverseprotectionontheVccconnection).•Inatypicalapplication,powerconnectionsaremadeononesideoftheboardandcontrolconnectionsaremadeontheother.Allofthecontrolinputsareinternallypulledlow.EachofthetwomotorchannelshastwodirectioncontrolpinsandaspeedcontrolpinthatacceptsaPWMinputwithafrequencyofupto100kHz.TheSTBYpinmustbedrivenhightotakethedriveroutofstandbymode.TB6612Specifications•Recommendedmotorvoltage(VMOT):4.5–13.5V•Logicvoltage(VCC):2.7–5.5V•Outputcurrentmaximum:3Aperchannel•Outputcurrentcontinuous:1Aperchannel(canbeparalleledtodeliver2Acontinuous)•MaximumPWMfrequency:100kHz•Built-inthermalshutdowncircuit•Filteringcapacitorsonbothsupplylines•Reverse-powerprotectiononthemotorsupplyReal-worldpowerdissipationconsiderations•TheTB6612motordriverusedonthecarrierboardhasapeakcurrentratingof3Aperchannel.Thepeakratingsareforquicktransients(e.g.whenamotorisfirstturnedon),andthecontinuousratingof1Aisdependentonvariousconditions,suchastheambienttemperature.Theactualcurrentyoucandeliverwilldependonhowwellyoucankeepthemotordrivercool.Thecarrier’sprintedcircuitboardisdesignedtodrawheatoutofthemotordriverchip,butperformancecanbeimprovedbyaddingaheatsink.