ایزولاتور ایزولاتور دیجیتال

Product Attributes

Introduction

The Si826x isolators are pin-compatible, drop-in upgrades for popular optocoupled gate drivers. The devices are ideal for driving power MOSFETs and IGBTs used in a wide variety of inverter and motor control applications. The Si826x isolated gate drivers utilize Silicon Laboratories' proprietary silicon isolation technology, supporting up to 5.0 kV RMS withstand voltage per UL1577 and 10 KV surge protection per IEC60747. This technology enables higher-performance, reduced variation with temperature and age, tighter part-to-part matching, and superior common-mode rejection compared to optocoupled gate drivers. While the input circuit mimics the characteristics of an LED, less drive current is required, resulting in higher efficiency. Propagation delay time is independent of input drive current, resulting in consistently short propagation times, tighter unit-to-unit variation, and greater input circuit design flexibility. As a result, the Si826x series offers longer service life and dramatically higher reliability compared to opto-coupled gate drivers.

Features

• Pin-compatible, drop-in upgrades for popular high speed opto-coupled gate drivers
• Low power diode emulator simplifies design-in process
• 0.6 and 4.0 Amp peak output drive current
• Rail-to-rail output voltage
• Performance and reliability advantages vs. opto-drivers
  • Resistant to temperature and age
  • 10x lower FIT rate for longer service life
  • 14x tighter part-to-part matching
  • Higher common-mode transient immunity: >50 kV/μs typical

Applications

• IGBT/ MOSFET gate drives
• Industrial, HEV and renewable energy inverters
• AC, Brushless, and DC motor controls and drives
• Variable speed motor control in consumer white goods
• Isolated switch mode and UPS power supplies