AD8207

零漂移、高压、双向差动放大器
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产品详情

AD8207是一款单电源差动放大器,非常适合在大共模电压情况下放大小差分电压。采用5 V电源时,输入共模电压范围为−4 V至+65 V。AD8207采用3.3 V至5 V单电源供电,非常适合承受电磁阀和电机控制等应用中常见的大输入PWM共模电压。

AD8207采用8引脚SOIC封装。相对于温度的出色直流性能使测量环路误差保持最小。失调漂移典型值小于500 nV/°C,增益漂移典型值低于10 ppm/°C。

AD8207非常适合双向电流检测应用。它具有两个基准引脚VREF1 和 VREF2 ,允许用户将器件的输出轻松偏置到电源电压范围内的任何电压。当VREF1 与 V+引脚相连、 VREF2 与 GND 引脚相连时,输出设置为半量程。将两个基准引脚与GND相连可提供从地电压附近开始的单极性输出。将两个基准引脚与V+相连可提供从V+附近开始的单极性输出。将外部低阻抗电压施加于VREF1 和 VREF2 引脚可实现其它输出偏移。


应用
- 下列应用中的高端电流检测:
电机控制
电磁阀控制
喷油控制
引擎管理
悬架控制
车辆动态控制
DC-DC转换器

产品生命周期

checked 推荐新设计使用

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EVAL-FMCMOTCON2 电路图

产品详情

The AD-FMCMOTCON2-EBZ is a complete high performance servo system on an FPGA Mezzanine Card (FMC) board, the purpose of which is to provide a complete motor drive system demonstrating efficient and high dynamic control of three phase PMSM and induction motors up to 48V and 20A.

Two motors can be driven at the same time, each motor having its separate power supply. The system incorporates high quality power sources; reliable power, control, and feedback signals isolation; accurate measurement of motor current & voltage signals; high speed interfaces for control signals to allow fast controller response; industrial Ethernet high speed interfaces; single ended Hall, differential Hall, encoder and resolver interfaces; digital position sensors interface; flexible control with a FPGA/SoC interface.

The kit consists of two boards: a controller board and a drive board. An optional AD-DYNO2-EBZ dynamometer can also be purchased through Avnet and is intended to be an extension of the drive system.

Controller Board

  • Digital board for interfacing with the low and high voltage drive boards
  • Compatible with all Xilinx FPGA platforms with FMC LPC or HPC connectors
  • FMC signals voltage adaptation interface for seamless operation on all FMC voltage levels
  • Fully isolated digital control and feedback signals
  • Isolated Xilinx XADC interface
  • 2 x Gbit Ethernet PHYs for high speed industrial communication, with 3rd party EtherCAT support
  • Single ended Hall, Differential Hall, Encoder, Resolver interfaces
  • Digital sensors interfaces
    • EnDat
    • BISS Interface

Drive Board

  • Drives motors up to 48V @ 20A
  • Drives 2 motors simultaneously
  • High frequency drive stage implemented with ADI isolated gate drivers
  • Supported motor types
    BLDC
    PMSM
    Brushed DC
    Stepper (bipolar / unipolar)
  • Integrated over current protection
  • Reverse voltage protection
  • Current and Voltage measurement using isolated ADCs
  • BEMF zero cross detection for sensorless control of PMSM or BLDC motors
  • Separate voltage supplies for the 2 motors so that the motors don't influence each other

Dynamometer System with Embedded Control

  • Two BLDC motors connected by a rigid couple in a dyno setup, which can be used to test real-time motor control performance.
  • One BLDC motor acts as an electronically adjustable load and is driven by the embedded control system. This motor can be directly connected to the FMC motor drive to get complex / active loads. The load can be driven also by the AD-FMCMOTCON2-EBZ to implement dynamic load profiles.
  • The other BLDC motor is driven by the FMC motor drive.
  • Measurement and display of load motor current
  • Measurement and display of load motor speed
  • External control using Analog Discovery and MathWorks Instrumentation Control Toolbox

Software:

Example reference designs showing how to use the platform with Xilinx® FPGAs or SoCs and high performance control algorithms from Mathworks® are provided together with the hardware. Information on the FMC board, and how to use it, the design package that surrounds it, and the software which can make it work, can be found by clicking the software link.

工具及仿真模型

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SPICE模型

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AD8207 材料声明
PCN-PDN信息 质量和可靠性 原理图符号和PCB封装

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