Gate driver for noisy, high-temp environments
The SI8232BB-D-IS is a two-channel isolated gate driver from Skyworks, built with capacitive coupling technology and qualified to AEC-Q100 for automotive applications. The 2500Vrms isolation rating and 20kV/µs common-mode transient immunity let it sit on the secondary side of a traction inverter or DC-DC converter without losing data edges during fast switching events. Peak output current is 500 mA, with source/sink rated at 250 mA and 500 mA respectively — enough to drive the gate charge of medium-power IGBTs or SiC MOSFETs in a half-bridge leg. Propagation delay is 60 ns max with 5.6 ns pulse-width distortion, so dead-time margins stay tight even at higher switching frequencies. Operating temperature spans -40°C to 125°C, covering the under-hood automotive band and industrial extended-range environments. The output supply voltage range of 9.4 V to 24 V gives flexibility to match different gate drive rails — 15 V for standard IGBTs or 18-20 V for some SiC parts.
Supplied in tube packaging — the same die and package as the tape-and-reel variant SI8232BB-D-ISR, just different delivery format. For rework, the wide-body SOIC is hand-solderable with a fine-tip iron; no hot-air station required if the board has adequate pad access.
Lifecycle and compliance
The part carries approvals from CQC, CSA, UR, and VDE, covering safety certification for industrial and automotive equipment in North America, Europe, and China.