Application Circuit (Current sensing) of the TLP7820 Isolation Amplifier

This reference design provides design guide and example of simulation waveform for phase current detection with optical isolation amplifier for motor control of servo and inverter.

Application block diagram of aplication circuit (current sensing) of the TLP7820 isolation amplifier.
Applicatoin circuit diagram of aplication circuit (current sensing) of the TLP7820 isolation amplifier.

特性

  • Optically coupled isolation amplifier
  • Common mode noise imunity : 15kV/μs(Min)
  • Low comsumption current : Primary side 8.6mA(typ.), Secondary side 6.2mA(typ.)
  • Thin package(SO8L) contributes flexible PCB design

說明

  • Description of TLP7820 signature functions and features, especially common mode transient immunity, nonlenearity feature and low cosumption current
  • Design guide for the typical application circuit, current sensing circuit
  • Operation confirmation by Spice simulation

設計文件

設計・文件 包含以下文件。

設計數據

設計數據包含以下內容。

使用東芝項目/產品

器件型號 器件目錄 使用部位・數量 說明
Photocoupler(Isolation Amplifier) signal amplifier・1 Photocoupler(Isolation Amplifier), Analog output, 5000 Vrms, SO8L(LF4)

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