L298
Thissolutioncandriveuntil3AmpsInDCoperationanduntil3.5Ampsofarepetitivepeakcurrent.OnFig8itisshownthedrivingofatwophasebipolarsteppermotor;theneededsignalstodrivethein-putsoftheL298aregenerated,inthisexample,fromtheICL297.
Fig9showsanexampleofP.C.B.designedfortheapplicationofFig8.
Figure8:TwoPhaseBipolarStepperMotorCircuit.
Thiscircuitdrivesbipolarsteppermotorswithwindingcurrentsupto2A.Thediodesarefast2Atypes.
Fig10showsasecondtwophasebipolarsteppermotorcontrolcircuitwherethecurrentiscontrolledbytheI.C.L6506.
RS1=RS2=0.5
D1toD8=2AFastdiodes
{
VF≤1.2V@I=2Atrr≤200ns
8/13
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