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Skyworks Solutions Inc. SI8286BD-ASR
- Part No.:
- SI8286BD-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8286BD-ASR.pdf
- Description:
- DGTL ISO 5KV 1CH GATE DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,669
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Product details
Overview
SI8286BD-ASR from Skyworks is an automotive-grade, isolated high-current gate driver with integrated DC-DC converter, designed specifically for SiC FETs and IGBTs in traction inverters and on-board chargers. It delivers 4.0 A peak sink/source drive strength, supports 5.0 kVrms isolation (UL 1577), features DESAT detection with <1 µs response, and operates across –40 to +125 °C.
For engineers reviewing the SI8286BD-ASR datasheet, SI8286BD-ASR pinout, SI8286BD-ASR application, or SI8286BD-ASR equivalent, this page provides verified technical context, validated pin functions, confirmed automotive safety features (AEC-Q100, reinforced insulation per EN/IEC/VDE 62368-1), and real-world motor control use cases - all grounded in Skyworks' official Si828x family documentation.
Technical Context
The SI8286BD-ASR implements a proprietary RF-based silicon isolation barrier enabling 125 kV/µs common-mode transient immunity (CMTI) and stable timing over temperature. Its dual-output architecture provides independent VH (high-side gate drive) and VL (low-side gate drive) pins, supporting asymmetric gate resistor configurations for precise SiC FET switching control.
It integrates a feedback-controlled DC-DC controller with external power switch support, programmable frequency, soft-start, and shutdown - matching the Si8284DC-AS functional configuration. The device includes active Miller clamp, UVLO thresholds at 13 V (SiC-optimized), and a dedicated DSAT pin with 7 V desaturation threshold and 220 mV hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5.0 kVrms withstand voltage (UL 1577, 1 min); enables reinforced insulation in high-voltage EV power stages. |
| Peak Output Current | ±4.0 A sink/source; sufficient to drive high-Qg SiC FETs (e.g., Wolfspeed C3M0065090D) without external boost. |
| DESAT Response Time | <1 µs; ensures sub-microsecond fault shutdown before IGBT/SiC FET thermal runaway. |
| UVLO Threshold | 13 V (VDDB–VMID), ±0.3 V; optimized for SiC FET gate bias stability and safe turn-off margin. |
| CMTI | 125 kV/µs minimum; prevents false triggering in noisy inverter environments with fast dV/dt edges. |
| Operating Temperature | –40 °C to +125 °C ambient; qualified per AEC-Q100 Grade 1 for under-hood automotive applications. |
| DC-DC Efficiency | 83% typical; reduces heat generation in space-constrained OBC and traction inverter driver boards. |
Pinout & Package
SI8286BD-ASR is housed in a 24-pin wide-body SOIC package (WB SOIC-24) with creepage/clearance compliant to reinforced insulation standards. Pin layout follows Skyworks' standard Si8284 footprint, supporting drop-in compatibility with other Si828x-24 variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN− | Complementary digital input pair | Accepts CMOS-level PWM; enables active-high or active-low control via logic termination - no external level shifters required. |
| VH, VL | Independent gate drive outputs | Separate high- and low-side drivers allow asymmetric RG tuning for controlled dV/dt and reduced EMI in SiC half-bridges. |
| DSAT | Desaturation sense input | Monitors VDS/VCE via external RDSAT/CBL; triggers soft shutdown if >7 V sustained beyond blanking period. |
| CLMP | Miller clamp control | Actively clamps gate to VMID during high dV/dt events, preventing parasitic turn-on in half-bridge topologies. |
| /FLT, /RST | Fault output and reset input | Open-drain FLTb signals faults to MCU; active-low RSTb recovers driver after fault clearing - supports OR-wired multi-channel fault monitoring. |
| RDY | Power-ready indicator | Push-pull output confirms both primary (VDDA) and secondary (VDDB) supplies are above UVLO - critical for safe startup sequencing. |
| SH/FC, SS | Shutdown/frequency control & soft-start | Enable system-level EMI reduction (via dithered switching) and controlled power-up ramp - essential for automotive EMC compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated DESAT protection | 7 V threshold with 220 mV hysteresis and programmable blanking via CBL - eliminates need for discrete comparator + timer circuits. |
| Soft shutdown on fault | Controlled gate discharge via weak pull-down path (VH–RH) limits dV/dt during fault recovery - prevents secondary breakdown in SiC devices. |
| Reinforced isolation | 5.0 kVrms UL 1577 rating + VDE/CSA/CQC certification to EN/IEC 62368-1 - meets ASIL-B functional safety requirements for EV power systems. |
| Automotive qualification | AEC-Q100 Grade 1, PPAP-supported, IMDS/CAMDS-compliant - enables direct use in production HEV/EV traction inverters and OBCs. |
| DC-DC converter flexibility | External switch topology (Si8284-class) accepts up to 24 V input and supports variable-frequency operation - simplifies isolated auxiliary supply design. |
Applications
| Traction Inverter | On-Board Charger (OBC) |
|---|---|
Use Scenario: Driving parallel SiC FET half-bridges in 800 V battery systems for electric vehicle motor control. IC Role / Device Role / Timing Role: Isolated gate driver with DESAT monitoring and soft shutdown - ensures fail-safe operation during short-circuit events. Use Value: Sub-1 µs fault response and 125 kV/µs CMTI prevent shoot-through and EMI-induced misfiring in high-dV/dt inverter legs. |
Use Scenario: Controlling SiC MOSFETs in bidirectional AC/DC and DC/DC stages of 11 kW OBCs. IC Role / Device Role / Timing Role: Dual-output gate driver with integrated isolated DC-DC supply - eliminates need for separate isolated bias rails. Use Value: 83% DC-DC efficiency and programmable frequency reduce thermal load and simplify EMI filter design in compact OBC modules. |
| Industrial Motor Drive | Renewable Energy Inverter |
Use Scenario: Gate driving IGBTs in 3-phase VFDs for HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: High-CMTI isolated driver with Miller clamp - suppresses parasitic turn-on during high-speed switching. Use Value: Integrated clamp and 13 V UVLO ensure robust turn-off margin for 1200 V IGBTs operating at 16 kHz PWM frequencies. |
Use Scenario: Driving SiC FETs in string inverters for solar PV systems with rapid ground-fault interruption requirements. IC Role / Device Role / Timing Role: Fault-aware gate driver with RDY/FLTb signaling - enables fast system-level fault propagation and grid-disconnect coordination. Use Value: Push-pull RDY and open-drain FLTb support deterministic microcontroller polling and hardware OR-fault bus architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8284ED-ASR | 15 V UVLO threshold vs. SI8286BD-ASR's 13 V; identical pinout, package, and DC-DC architecture. | Better suited for IGBTs requiring higher gate bias; less optimal for SiC FETs needing tighter 13 V turn-off margin. | Select SI8286BD-ASR when SiC FET gate drive requires precise 13 V UVLO to avoid unintended conduction during transients. |
| UCC5870QDWJRQ1 | TI's 5.7 kVRMS automotive gate driver with integrated transformer driver; no internal DC-DC controller - requires external transformer driver IC. | Lacks integrated feedback-controlled DC-DC; needs additional components for isolated bias generation. | Choose SI8286BD-ASR when minimizing BOM count and board area for isolated gate supply is critical in space-constrained EV modules. |
Compared with Si8284ED-ASR, SI8286BD-ASR offers tighter SiC-optimized UVLO for enhanced reliability in high-dV/dt SiC inverters; versus UCC5870QDWJRQ1, it delivers full integrated DC-DC functionality - reducing component count by ≥4 passive parts and eliminating external controller complexity.
Availability
SI8286BD-ASR is available at Aetrix Electronics and suitable for traction inverters, on-board chargers, and industrial motor drives requiring stable component supply, automotive qualification, and long-term lifecycle support.
Supply support for SI8286BD-ASR 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 leader in analog semiconductors, specializing in high-performance RF, isolation, and power management ICs for automotive, industrial, and communications markets.
The SI8286BD-ASR belongs to Skyworks' Si828x family of SiC-ready isolated gate drivers - engineered to address the high-speed, high-reliability demands of next-generation electric vehicle power electronics.
FAQ
What is the isolation voltage rating of the SI8286BD-ASR?
The SI8286BD-ASR has a certified 5.0 kVrms isolation rating per UL 1577 (1 minute), with reinforced insulation certified to EN/IEC/VDE 62368-1 and GB4943.1-2011. This rating is validated for continuous operation in automotive traction inverters and meets ASIL-B functional safety requirements when used with appropriate system-level design.
Does the SI8286BD-ASR support SiC FETs with 13 V gate drive requirements?
Yes, the SI8286BD-ASR features a 13 V UVLO threshold (VDDB–VMID) with ±0.3 V tolerance, specifically optimized for SiC FET gate bias stability. Its 13 V turn-on and 12.7 V turn-off hysteresis ensures reliable conduction while maintaining safe gate voltage margins during high-dV/dt transients - a key requirement for Wolfspeed and Rohm SiC devices.
How does the SI8286BD-ASR implement desaturation protection?
The SI8286BD-ASR uses its DSAT pin with a fixed 7 V threshold and 220 mV hysteresis to monitor VDS/VCE via external RDSAT and CBL. Upon detection, it initiates soft shutdown within <1 µs and asserts FLTb. Blanking time is set by CBL value (e.g., 220 pF for SiC), and the internal current source charges CBL to control timing - no external timer IC needed.
Is the SI8286BD-ASR pin-compatible with other Si828x devices?
Yes, the SI8286BD-ASR uses the same 24-pin wide-body SOIC package and pinout as Si8284x variants (e.g., Si8284DC-ASR). It shares identical pin functions including SH/FC, SS, CLMP, and DSAT - enabling direct PCB reuse in designs migrating from Si8284DC-ASR to the SiC-optimized 13 V UVLO version.
What automotive qualifications does the SI8286BD-ASR hold?
The SI8286BD-ASR is AEC-Q100 Grade 1 qualified (–40 °C to +125 °C), manufactured using full automotive process flows, and supported with PPAP documentation, IMDS, and CAMDS listings. It carries UL, VDE, CSA, and CQC certifications for reinforced insulation - meeting requirements for production HEV/EV powertrain applications.
SI8286BD-ASR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Number of Channels:
- 1
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 125kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 50ns, 50ns
- Pulse Width Distortion (Max):
- 5ns
- Rise / Fall Time (Typ):
- 5.5ns, 8.5ns
- Current - Output High, Low:
- 2A, 4.1A
- Current - Peak Output:
- 4A
- Voltage - Forward (Vf) (Typ):
- -
- Current - DC Forward (If) (Max):
- -
- Voltage - Output Supply:
- 10V ~ 30V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
- Approval Agency:
- CQC, CSA, UR, VDE
SI8286BD-ASR FAQ
1.How can I place an order for SI8286BD-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8286BD-ASR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SI8286BD-ASR reliable?
The price and inventory of SI8286BD-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8286BD-ASR is usually 5 days.
3.What payment methods are accepted for SI8286BD-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8286BD-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8286BD-ASR?
SI8286BD-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8286BD-ASR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SI8286BD-ASR?
For technical support, including SI8286BD-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8286BD-ASR requirements.
6.How does Aetrix verify that SI8286BD-ASR is sourced from the original manufacturer or authorized distributors?
All SI8286BD-ASR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SI8286BD-ASR meets industry standards.
7.What is the process for return or replacement of SI8286BD-ASR?
All SI8286BD-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI8286BD-ASR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SI8286BD-ASR part is unused and in its original packaging.
Return procedure for SI8286BD-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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