SI8261

Features
Applications
Safety Regulatory Approvals (Pending)
Description
The Si826x isolators are pin-compatible, drop-in upgrades for popular optocoupled gate drivers, such as 0.6 A ACPL-0302/3020, 2.5 A HCPL-3120/ACPL3130, HCNW3120/3130, and similar opto-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 kVRMS withstand
voltage per UL1577. This technology enables higher-performance, reduced
variation with temperature and age, tighter part-to-part matching, and superior
common-mode rejection compared to opto-coupled 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 optocoupled gate drivers.
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