Automotive-grade isolated gate driver for traction inverters and motor drives
The Skyworks SI8220DB-D-IS is a single-channel digital isolator with an integrated gate-driver output, purpose-built for automotive and industrial power-conversion stages that demand galvanic isolation between the controller and the power switches. Rated for 2500 Vrms isolation with a peak output current of 2.5 A, it directly drives IGBT and SiC MOSFET gates in traction inverters, DC-DC converters, and motor-drive stages without an external buffer. The AEC-Q100 qualification (Grade 1, -40°C to 125°C) confirms the part meets automotive reliability standards for under-hood and chassis-mounted ECU applications, including thermal cycling and vibration stress.
Gate-drive parametrics that set the switching performance ceiling
The output stage delivers 1.5 A source and 2.5 A sink current, with a typical rise/fall time of 20 ns — this combination charges and discharges the gate capacitance of a standard IGBT module in under 100 ns, enabling switching frequencies up to several hundred kilohertz in hard-switched topologies. Propagation delay is 60 ns (low-to-high) and 40 ns (high-to-low), which sets the minimum dead-time budget for the complementary switch in a half-bridge leg; the 30 kV/µs common-mode transient immunity prevents false turn-on when the switching node slews at high dV/dt. The output supply range of 14.8 V to 24 V covers the typical bias rails for IGBT gate drivers (15 V or 18 V) and SiC FET drivers (20 V), while the input-side forward voltage of 2.5 V max and forward current of 30 mA max define the LED drive requirements for the isolated input stage.
Package, approvals, and board-fit considerations
Global regulatory acceptance is covered by CQC (China), CSA (Canada), UR (UL Recognized, USA), and VDE (Germany) approvals — the part carries RoHS3 compliance per Skyworks' current declaration.
No direct replacement or second-source is recorded — the part is the primary Skyworks order code for this automotive-grade, tube-packaged variant.