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Skyworks Solutions Inc. SI8286ED-AS
- Part No.:
- SI8286ED-AS
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8286ED-AS.pdf
- Description:
- DGTL ISO 5KV 1CH GATE DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,318
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Product details
Overview
SI8286ED-AS from Skyworks is an automotive-grade, isolated high-current gate driver with integrated DC-DC converter, designed specifically for driving SiC FETs in traction inverters and on-board chargers. It features 15 V UVLO threshold, 5.0 kVrms isolation rating, desaturation detection with <1 µs response, and soft shutdown for controlled fault recovery. Its 24-pin wide-body SOIC package supports reinforced insulation per EN/IEC/VDE/UL 62368-1 and AEC-Q100 qualification.
For engineers reviewing the SI8286ED-AS datasheet, SI8286ED-AS pinout, SI8286ED-AS application, or SI8286ED-AS equivalent, this page delivers verified technical context for SiC gate drive design-covering isolation integrity, desat protection timing, DC-DC configuration options, Miller clamp operation, and automotive safety-critical layout requirements.
Technical Context
The SI8286ED-AS implements a proprietary RF-based silicon isolation barrier delivering 125 kV/µs CMTI and 5.0 kVrms withstand voltage. Its dual-channel architecture separates input logic (IN+/IN−) from output driver (VH/VL) and integrates feedback signals (RDY, FLTb, RSTb) across the barrier.
This device belongs to the Si828x family's external-switch DC-DC variant (Si8284-class), supporting high-input-voltage bias rails (e.g., 12 V automotive systems) and offering user-adjustable switching frequency, soft-start, and shutdown control. It includes dedicated DSAT sensing with 7 V threshold and 220 mV hysteresis, plus integrated Miller clamp to prevent parasitic turn-on in half-bridge topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5.0 kVrms per UL 1577 - enables reinforced insulation in 800 V SiC systems without external isolation components. |
| UVLO Threshold | 15 V (VDDB–VMID) - matches SiC FET gate drive requirements and prevents partial turn-on during brownout. |
| Desat Detection | <1 µs response with 7 V threshold and 220 mV hysteresis - ensures fast, noise-immune short-circuit protection for high-dV/dt SiC switches. |
| CMTI | 125 kV/µs - maintains signal integrity in high-noise motor drive environments with fast switching transients. |
| DC-DC Configuration | External power switch support - allows use of high-voltage input rails (e.g., 12 V automotive) and scalable output power via transformer selection. |
| Package | 24-pin wide-body SOIC - provides creepage/clearance >8.3 mm for reinforced insulation compliance in automotive applications. |
| Temperature Range | –40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood traction inverter and OBC deployment. |
Pinout & Package
SI8286ED-AS is housed in a 24-pin wide-body SOIC package (WB SOIC-24) with 1.27 mm pitch, 15.4 mm body width, and 8.3 mm minimum creepage distance. The package supports RoHS-compliant reflow up to 260 °C and features automotive-grade top marking including manufacturing code starting with N–Z.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN− | Complementary digital input pair | Accepts CMOS-level PWM; enables active-high or active-low control depending on termination - critical for noise-immune gate drive signaling. |
| VH, VL | Separate gate drive outputs | Independent high-side pull-up and low-side pull-down paths allow asymmetric gate resistor tuning for optimized SiC FET rise/fall times. |
| DSAT | Desaturation sense input | Monitors VDS/VCE via external RDSAT/DDSAT; triggers soft shutdown within <1 µs if voltage exceeds 7 V during blanking period. |
| CLMP | Miller clamp control | Activates internal NMOS to clamp gate to VMID during off-state - prevents parasitic turn-on caused by dV/dt coupling in half-bridge configurations. |
| RSTb, FLTb, RDY | Active-low reset / open-drain fault / push-pull ready | Enable system-level fault coordination: FLTb asserts on desat, RSTb clears it, RDY confirms both sides powered - essential for ASIL-B functional safety chains. |
| VDDA, VDDB, VMID, VSSB | Supply and reference terminals | VDDA powers input side; VDDB/VMID/VSSB define driver-side floating supply domain - supports optional negative gate bias when VSSB ≠ VMID. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated DC-DC controller with dithering | Reduces EMI by spreading switching frequency; eliminates need for external isolated bias supplies in SiC inverter designs. |
| Soft shutdown on desat fault | Discharges gate via weak pull-down through VH/RH to avoid destructive dV/dt - preserves SiC FET reliability during fault events. |
| Programmable frequency & soft-start | Allows EMI optimization and inrush current limiting during startup - required for automotive EMC compliance (CISPR 25 Class 5). |
| AEC-Q100 Grade 1 qualification | Validated for –40 °C to +125 °C operation with PPAP documentation, IMDS/CAMDS listing, and zero-defect manufacturing flow. |
| Reinforced insulation certification | UL 1577 (5 kVrms), VDE/EN/IEC 62368-1, CQC GB4943.1 - satisfies ISO 26262 ASIL-B hardware safety requirements for traction systems. |
Applications
| Traction Inverter | On-Board Charger (OBC) |
|---|---|
Use Scenario: High-power 800 V SiC inverter controlling motor phase currents in electric vehicle drivetrains. IC Role / Device Role / Timing Role: Isolated gate driver providing timing-controlled, fault-protected switching of SiC half-bridges with synchronized desat detection. Use Value: Enables 100+ kHz switching with <1 µs fault response, reducing system losses and improving torque density while meeting ASIL-B safety goals. |
Use Scenario: Bidirectional AC/DC and DC/DC conversion in EV on-board chargers using SiC MOSFETs in totem-pole PFC and LLC stages. IC Role / Device Role / Timing Role: Gate driver with integrated isolated DC-DC supply and Miller clamp - eliminates auxiliary bias rails and prevents shoot-through during high-frequency transitions. Use Value: Reduces BOM count by 3–4 components per channel and improves efficiency by enabling precise gate timing and robust noise immunity in compact OBC modules. |
| Industrial Motor Drive | Renewable Energy Inverter |
Use Scenario: Variable-speed drives for HVAC compressors and industrial pumps operating at 690 V AC line voltage. IC Role / Device Role / Timing Role: High-CMTI isolated driver managing SiC FET switching with desat protection and soft shutdown in noisy factory environments. Use Value: Delivers >125 kV/µs common-mode rejection to maintain PWM fidelity amid heavy EMI, extending system uptime and reducing field failures. |
Use Scenario: Central and string inverters converting DC from solar arrays into grid-synchronized AC, using SiC for higher efficiency and power density. IC Role / Device Role / Timing Role: Gate driver with reinforced insulation and programmable DC-DC frequency - supports high-voltage DC bus operation and meets IEC 62109 safety standards. Use Value: Enables 99%+ peak efficiency by minimizing gate drive losses and eliminating external isolated supplies, accelerating ROI in utility-scale deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated SiC gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8284ED-AS | Same pinout, identical specs, and identical automotive qualification - SI8286ED-AS is a documented alternate ordering part per Skyworks' official ordering guide. | No functional difference; both target 15 V UVLO SiC gate drive in AEC-Q100 systems. | Select SI8286ED-AS when sourcing from distributors listing this specific OPN; no design changes required. |
| UCC5870QDWJRQ1 | TI device offers 5.7 kVrms isolation, 150 kV/µs CMTI, and integrated DESAT but uses internal DC-DC switch - limits max input voltage to 5 V vs. SI8286ED-AS's external-switch 12 V capability. | Better for low-voltage auxiliary rails; less suitable for direct 12 V automotive battery input without pre-regulation. | Choose UCC5870QDWJRQ1 only if system uses regulated 5 V bias; otherwise SI8286ED-AS provides broader input flexibility and proven transformer-based isolation scalability. |
Compared with Si8284ED-AS, SI8286ED-AS is functionally identical and drop-in compatible; versus UCC5870QDWJRQ1, SI8286ED-AS supports higher DC-DC input voltage and leverages Skyworks' RF isolation for tighter temperature stability and lower aging drift - critical for long-life automotive deployments.
Availability
SI8286ED-AS is available at Aetrix Electronics and suitable for traction inverters, on-board chargers, and industrial motor drives requiring stable component supply with automotive-grade traceability and lifecycle management.
Supply support for SI8286ED-AS 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 for high-reliability applications.
The SI8286ED-AS belongs to Skyworks' Si828x family of SiC-ready isolated gate drivers, engineered to simplify high-efficiency, high-voltage power conversion in automotive electrification and industrial energy systems.
FAQ
What is the isolation voltage rating of the SI8286ED-AS and which safety standards does it meet?
The SI8286ED-AS provides 5.0 kVrms isolation per UL 1577 for 1 minute and is certified for reinforced insulation under VDE EN 62368-1, IEC 62368-1, and CQC GB4943.1. These approvals confirm its suitability for functional safety applications in 800 V SiC systems, including ASIL-B compliant traction inverters where galvanic separation between control and power domains is mandatory. SI8286ED-AS meets all required creepage and clearance distances in its 24-pin wide-body SOIC package.
How does the desaturation detection circuit in the SI8286ED-AS operate, and what is its response time?
The SI8286ED-AS monitors VDS/VCE via the DSAT pin using an internal 7 V comparator with 220 mV hysteresis and detects overcurrent conditions in less than 1 µs. It employs an external blanking capacitor (CBL) charged by an internal current source to mask turn-on transients; the blanking time is programmable via CBL value. Upon desat detection, SI8286ED-AS initiates soft shutdown and asserts FLTb low - enabling rapid system-level fault handling without gate oscillation or latch-up.
Does the SI8286ED-AS support negative gate bias, and how is it implemented?
Yes, the SI8286ED-AS supports negative gate bias via separate VSSB and VMID pins. When a negative bias is needed (e.g., to improve SiC FET turn-off robustness), an additional transformer winding is connected between VSSB and VMID to generate a negative rail relative to VMID. If negative bias is not used, VSSB must be shorted to VMID per datasheet guidance. This flexibility allows SI8286ED-AS to optimize switching behavior across diverse SiC FET gate charge profiles.
What DC-DC converter topology does the SI8286ED-AS use, and what input voltage range does it support?
The SI8286ED-AS uses a feedback-controlled, current-mode PWM DC-DC controller with external power switch support - enabling direct connection to 12 V automotive battery rails without pre-regulation. It operates with dithering to reduce EMI and achieves 83% efficiency. Unlike internal-switch variants (e.g., Si8281/Si8283), SI8286ED-AS's external-switch architecture accommodates higher input voltages and scalable output power via transformer selection, making it ideal for high-power OBC and inverter auxiliary supplies.
Is the SI8286ED-AS pin-compatible with other Si828x family members, and which ones share the same footprint?
Yes, the SI8286ED-AS shares the same 24-pin wide-body SOIC package and pinout with all Si8283x and Si8284x variants (e.g., SI8284ED-AS, SI8283ED-AS). Per Skyworks' official ordering guide, SI8286ED-AS is a documented alternate for SI8284ED-AS - meaning identical mechanical, electrical, and thermal characteristics. No PCB layout changes are required when substituting within this group, though DC-DC configuration (e.g., shutdown enable) must be verified per application circuit.
SI8286ED-AS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- 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:
- 16V ~ 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
SI8286ED-AS FAQ
1.How can I place an order for SI8286ED-AS through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8286ED-AS 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 SI8286ED-AS reliable?
The price and inventory of SI8286ED-AS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8286ED-AS is usually 5 days.
3.What payment methods are accepted for SI8286ED-AS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8286ED-AS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8286ED-AS?
SI8286ED-AS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8286ED-AS 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 SI8286ED-AS?
For technical support, including SI8286ED-AS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8286ED-AS requirements.
6.How does Aetrix verify that SI8286ED-AS is sourced from the original manufacturer or authorized distributors?
All SI8286ED-AS 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 SI8286ED-AS meets industry standards.
7.What is the process for return or replacement of SI8286ED-AS?
All SI8286ED-AS units undergo pre-shipment inspection (PSI). If there is an issue with SI8286ED-AS, 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 SI8286ED-AS part is unused and in its original packaging.
Return procedure for SI8286ED-AS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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