描述 Description

Si8751AB-IS?drivers offer a simple way for customers to replace solid-state relays (SSRs) or electromechanical relays (EMRs), combining robust CMOS isolation technology with a FET driver to form a complete, isolated switch. Versatile inputs provide digital CMOS pin control (Si8751) or diode emulation (Si8752) to best suit the application, plus flexible outputs to support driving AC or DC load configurations. A floating secondary side DC voltage source is unnecessary as the self-contained product generates its own gate drive output voltage, reducing cost, size, and complexity. Si8751AB-IS devices eliminate the need for bulky mechanical relays which can be difficult to assemble onto PCBs and add switching noise to the system. Si8751AB-IS drivers support full industrial and automotive temperature ranges with increased stability and longer life-time. Input side voltages are flexible from 2.25?V to 5.5?V supporting seamless connection to low-power controllers. Si8751AB-IS?devices provide a clamping device to prevent unintended turn on of the external FET when a high dV/dt is present on the FET’s drain, and its 2.5?kVrms isolation rating forms the basis for full certification to UL, CSA, VDE, and CQC.

特性 Features

·數(shù)字 CMOS 或二極管仿真控制輸入
·開啟時間 <100 μs 的 10.3 V 柵極驅(qū)動輸出
·內(nèi)部產(chǎn)生的次級側(cè)電源
·米勒鉗位電容支持以減少電感顫動
·直流或交流負(fù)載開關(guān)支持

簡介

Si8751AB-IS屬于隔離器的隔離器-柵極驅(qū)動器。由制造生產(chǎn)的Si8751AB-IS隔離器 - 柵極驅(qū)動器隔離器柵極驅(qū)動器是電源信號與外部 MOSFET 或橋接架構(gòu)電路之間的接口。技術(shù)類型分為容性耦合、磁耦合和光耦合，提供 1、2 或 4 通道。電壓隔離范圍為 1000Vrms 至 7500Vrms，傳播延遲范圍為 30ns 至 5ms。