Skyworks Solutions Inc. SI82F39BCE-IS3R

Overview

SI82F39BCE-IS3R from Skyworks Solutions is a dual-channel isolated gate driver with Universal configuration, CMOS inputs, and Selectable Variable Current Drive (SelVCD™) for driving SiC/GaN MOSFETs and IGBTs in half-bridge topologies. It supports 3–20 V input supply, 5–30 V gate supply, <5 ns channel-to-channel skew, 200 kV/µs CMTI, and integrated Miller clamp - deployed in onboard chargers and motor drives.

For engineers reviewing the SI82F39BCE-IS3R datasheet, SI82F39BCE-IS3R pinout, SI82F39BCE-IS3R application, or SI82F39BCE-IS3R equivalent, key selection criteria include its EN-controlled Universal mode, SPD± programmable sourcing/sinking current (8 levels), dead time programmability via external resistor, AEC-Q100 qualification, and narrow-body SOIC-16 package with reinforced 6 kVRMS isolation.

Technical Context

The SI82F39BCE-IS3R implements dual digital capacitive isolation using silicon dioxide barriers, enabling differential RF-modulated signal transmission with OOK encoding for high fault tolerance and timing consistency. Its logic side uses Schmitt-triggered CMOS inputs with deglitch filtering option, while output stage operates as a precision current source with ±10% regulation over temperature and process variation.

It features independent UVLO monitoring per supply rail (VDDI, VDDA, VDDB), programmable dead time via DT pin (10–110 kΩ resistor), and dynamic Miller clamp activation triggered at VMCTA/B threshold during VOH→VOL transitions - all coordinated through on-chip LDOs, ADCs, and digital control logic without external biasing.

Key Specifications

Pinout & Package

Narrow-body 16-pin SOIC (SOIC-16 NB) package with 1.27 mm pitch and creepage ≥8.3 mm; RoHS-compliant, halogen-free, and rated for 1500 VRMS working voltage.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar isolated dual-gate driver applications.

Compared with SI82F39BCE-IS3R, Si8239BD-IS3R offers identical mechanical and functional compatibility with adjusted protection thresholds, while UCC5390SCDR provides lower-cost integration at the expense of flexibility, isolation robustness, and automotive readiness.

Availability

SI82F39BCE-IS3R is available at Aetrix Electronics and suitable for onboard chargers, motor drives, uninterruptible power supplies, and renewable energy inverters requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.

Supply support for SI82F39BCE-IS3R includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions, with leadership in RF, timing, and isolation technologies.

The Si82Fx family was designed specifically for high-reliability isolated gate driving in automotive and industrial power conversion, emphasizing CMTI resilience, SelVCD™ adaptability, and safety-certified reinforcement.

FAQ

What is the isolation architecture used in the SI82F39BCE-IS3R?

The SI82F39BCE-IS3R employs Skyworks' proprietary silicon capacitive isolation technology, using dual high-voltage silicon dioxide (SiO₂) capacitors per channel to achieve 6 kVRMS reinforced insulation. This architecture supports differential RF modulation with OOK encoding, delivering superior timing consistency, low skew, and high CMTI (>200 kV/µs) compared to optocoupler-based alternatives. The SI82F39BCE-IS3R leverages this isolation to separate logic inputs (VDDI/GNDI) from gate driver outputs (VDDA/GNDA, VDDB/GNDB) without transformers or magnetic coupling.

Does the SI82F39BCE-IS3R support both high-side/low-side and dual independent configurations?

Yes, the SI82F39BCE-IS3R is a Universal-configuration device that supports both modes. When the DT pin is connected to GND via a resistor, it operates as a high-side/low-side driver with programmable dead time and overlap protection. When DT is tied to VDDI, dead time and overlap protection are disabled, allowing VOA to track VIA and VOB to track VIB independently - effectively functioning as two isolated single-channel drivers. This flexibility is confirmed in Figures 2 and 6 of the preliminary datasheet and enables reuse across half-bridge and dual-switch topologies without hardware change.

How does the SelVCD™ feature eliminate the need for external gate resistors in the SI82F39BCE-IS3R?

SelVCD™ in the SI82F39BCE-IS3R replaces traditional gate resistors by implementing an on-chip, resistor-programmable current source for both sourcing (SPD+) and sinking (SPD−) paths. Eight discrete current levels are selected via precision resistors from SPD± pins to GND, enabling precise control of dV/dt without external components. Because the output behaves as a regulated current source - not a voltage source - gate charge is delivered linearly, and the integrated Miller clamp activates automatically during turn-off transitions. This eliminates gate resistor power dissipation, layout sensitivity, and tuning iterations required in conventional gate drivers.

What safety certifications apply to the SI82F39BCE-IS3R?

The SI82F39BCE-IS3R carries pending safety certifications including UL 1577 (6000 VRMS, 1 min), CSA 62368-1 (reinforced insulation), CSA 60601-1 (2 MOPP), VDE 60747-17 (reinforced insulation), and CQC GB4943.1. These approvals validate its 6 kVRMS isolation barrier for use in medical, industrial, and automotive applications requiring reinforced insulation. The device also meets AEC-Q100 Grade 1 stress testing for automotive deployment and supports 1500 VRMS working voltage per IEC 60664-1. Certification status is documented in Section "Safety Regulator Approvals (Pending)" of the preliminary datasheet.

Can the SI82F39BCE-IS3R drive GaN FETs reliably, and what design considerations apply?

Yes, the SI82F39BCE-IS3R is explicitly validated for GaN FETs, as stated in the Applications section and supported by its 5–30 V gate supply range, sub-5 ns skew, >200 kV/µs CMTI, and fast current-source outputs. Key design considerations include: (1) avoiding external gate resistors to preserve SelVCD™ accuracy and Miller clamp effectiveness; (2) using short, low-inductance PCB traces between VOA/VOB and GaN gate; (3) ensuring SPD± resistor placement minimizes noise coupling; and (4) leveraging the integrated Miller clamp to suppress dv/dt-induced false turn-on - critical for enhancement-mode GaN devices. The SI82F39BCE-IS3R's 125 °C max junction temperature rating further supports high-power-density GaN designs.