Maxim MAX40056双向电流放大器解决方案
Maxim公司的MAX40056是具有输入共模拟抑制范围-0.1V到+65V的双向电流放大器(CSA),非常适合电感负载如马达和螺线管,其PWM是用来控制驱动电压和电流,从500V/μs PWM边沿,具有快速的2μs PWM 边沿恢复(1%),共模抑制比(CMRR)典型为60dB (50V, ±500V/μs输入)和140dB DC.工作电压+2.7V到 +5.5V,工作温度-40℃ 到 +125℃,主要用在PWM H桥马达电流检测,螺线管电流检测,电感负载电流检测,电池堆栈监视器和汽车电子.本文介绍了MAX40056主要优势和特性,框图,应用电路,以及评估板MAX40056 EVK主要特性,电路图,材料清单和PCB设计图.
The MAX40056 is a bidirectional current-sense amplifierwith an input common-mode range that extends from-0.1V to +65V together with protection against negative inductive kickback voltages to -5V. This CSA is well-suitedfor phase current monitoring of inductive loads, such asmotors and solenoids, where pulse width modulation isused to control the drive voltage and current. TheMAX40056 uses an improved technique to help reject common-mode input PWM edges with slew rates up toand beyond ±500V/μs. Common mode rejection ratio(CMRR) is typically 60dB (50V, ±500V/μs input) and140dB DC, typical.
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