[原创]Maxim MAX22203集成电流检测65V 3.8A马达驱动解决方案

Maxim公司的MAX22203是集成电流检测的65V 3.8A两路有刷马达和单个步进马达驱动器,具有PWM输入和精确的电流驱动调节(CDR).每个H桥可单独地控制,有非常低的RON(高边+低边)0.3Ω(TA = 25C),导致了高驱动效率和产生低热量.MAX22203可用来驱动两个有刷DC马达或单个步进马达.器件具有过流保护(OCP),热关断(TSD)和欠压锁住(UVLO).开路漏极作用低nFAULT引脚,每次起作用时用作故障条件检测.在热关断和欠压锁住时,驱动器处与三态直到正常工作条件恢复.两个H桥具有65V最大工作电压.器件采用TQFN38 5mm x 7mm封装.主要用在有刷DC马达驱动,步进马达驱动,螺线管驱动器以及锁紧阀.本文介绍了MAX22203主要优势和特性,简化框图和应用框图以及评估板MAX22203 EVK主要特性,电路图,材料清单和PCB设计图.

The MAX22203 is a dual 65V, 3.8AMAX H-Bridge withPWM inputs and accurate Current Drive Regulation(CDR). Each H-Bridge can be controlled individually andhas a very low typical RON (high-side + low-side) of 0.3Ω,resulting in high driving efficiency and low heat generation.

The MAX22203 can be used to drive two Brushed DC motorsor a single Stepper Motor.

The integrated CDR can limit the start up or stall the currentof a Brushed DC motor or control the phase currentfor stepper operation.

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