SI8283

Si8281/82/83/84 Data Sheet 4.0 Amp ISODrivers with Integrated DC-DC Converters The Si828x family (Si8281/82/83/84) is made up of isolated, high-current gate drivers with integrated system safety and feedback functions. These devices are ideal for driving power MOSFETs and IGBTs used in a wide variety of inverter and motor control applications. The Si828x isolated gate drivers utilize Silicon Labs' 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-topart matching, and superior common-mode rejection compared to other isolated gate driver technologies. In addition to the gate driver, the Si828x family integrates a dc-dc controller for simple implementation of an isolated supply for the driver side. The Si828x dc-dc controller can be ordered in two different configurations depending on what system voltage rails are available and the amount of power needed. The Si8281 and Si8283 have integrated power switch but are limited in dc-dc voltage input to the device bias. The Si8282 and Si8284 utilize and external power switch and are able to accept much higher voltage input power rail. User-adjustable frequency for minimizing emissions, a soft-start function for safety, and a shut-down option are available options. The device requires only minimal passive components and a miniature transformer. The input to the device is a complementary d...