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Skyworks Solutions Inc. SI8286DC-ASR
- Part No.:
- SI8286DC-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8286DC-ASR.pdf
- Description:
- DGT ISO 3.75KV 1CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,453
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Product details
Overview
SI8286DC-ASR from Skyworks is an automotive-grade, isolated high-current gate driver with integrated DC-DC converter, designed specifically for driving Silicon Carbide (SiC) FETs in traction inverters and on-board chargers. It delivers 4.0 A peak source/sink output current, supports 13 V UVLO threshold, provides desaturation detection with <1 µs fault response, and features reinforced isolation rated at 5.0 kVrms per UL1577.
For engineers reviewing the SI8286DC-ASR datasheet, SI8286DC-ASR pinout, SI8286DC-ASR application, or SI8286DC-ASR equivalent, this device is evaluated for SiC FET gate drive in high-reliability automotive power systems requiring integrated safety feedback, soft shutdown, Miller clamping, and isolated bias supply generation without external switchers.
Technical Context
The SI8286DC-ASR implements a proprietary RF-based silicon isolation barrier enabling 125 kV/µs common-mode transient immunity and stable timing across temperature. Its dual-channel architecture separates input logic (IN+/IN−), driver outputs (VH/VL), and safety monitoring (DSAT, FLTb, RSTb, RDY) across galvanically isolated domains.
It integrates a feedback-controlled DC-DC controller with programmable switching frequency, soft-start, and shutdown capability - configured for external power switch operation to support high-input-voltage rails up to 24 V. The device uses closed-loop current-mode control and transformer-coupled secondary windings to generate regulated VDDB and optional negative VSSB bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5.0 kVrms withstand voltage (UL1577), enabling reinforced insulation in 400–800 V battery systems. |
| Peak Output Current | ±4.0 A source/sink, sufficient to drive high-Qg SiC FETs with fast turn-on/turn-off and low gate resistance. |
| UVLO Threshold | 13 V (VDDB–VMID), optimized for SiC FET gate bias stability and safe operation under partial rail loss. |
| Desat Detection Speed | <1 µs response time, enabling immediate soft shutdown before destructive IGBT/SiC FET overcurrent damage. |
| CMTI | 125 kV/µs, ensuring robust noise immunity in high-dV/dt motor drive environments (e.g., traction inverters). |
| DC-DC Efficiency | 83% typical, minimizing heat generation in compact automotive power modules with limited thermal margin. |
| Operating Temp | –40 °C to +125 °C ambient, qualified per AEC-Q100 Grade 1 for under-hood automotive applications. |
Pinout & Package
SI8286DC-ASR is housed in a 24-pin wide-body SOIC package (WB SOIC-24) with creepage/clearance compliant to reinforced insulation standards. Pin layout supports split ground planes, isolated transformer coupling, and low-inductance DSAT sensing paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN− | Complementary digital input pair | Enables active-high or active-low gate control; differential routing improves noise immunity in EMI-heavy motor drives. |
| VH, VL | Separate high-side and low-side gate drive outputs | Allows independent gate resistor selection for precise control of SiC FET dV/dt and switching losses. |
| DSAT | Desaturation sense input | Monitors VDS/VCE via external RDSAT/DDSAT; triggers fault shutdown if saturation voltage exceeds 7 V threshold. |
| /FLT, /RST | Open-drain fault output and active-low reset | Enables system-level fault coordination and safe recovery - FLTb asserts low on DESAT/UVLO; RSTb clears latched faults. |
| RDY | Push-pull ready indicator | Signals valid VDDA and VDDB supply presence; used by MCU to sequence gate drive enable after power-up. |
| CLMP | Miller clamp control terminal | Actively clamps gate to VMID during high dV/dt events, preventing parasitic turn-on in half-bridge SiC FET configurations. |
| SH/FC, SS | Shutdown/frequency control and soft-start inputs | Enable system-level control of DC-DC operation: SH/FC adjusts switching frequency to reduce EMI; SS prevents inrush current. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated DC-DC controller with external switch | Supports up to 24 V input rails and eliminates need for separate isolated bias supply in SiC inverter designs. |
| Programmable soft shutdown | Discharges SiC FET gate through weak pull-down path to avoid destructive dV/dt spikes during fault conditions. |
| Dedicated Miller clamp (CLMP) | Prevents false turn-on in high-side switches caused by drain-to-gate capacitance coupling during fast dV/dt transitions. |
| DESAT detection with blanking timer | Configurable blanking via external CBL capacitor avoids false triggering during SiC FET turn-on transients. |
| AEC-Q100 Grade 1 qualification | Validated for automotive use with PPAP documentation, IMDS/CAMDS compliance, and zero-defect manufacturing flow. |
Applications
| Electric Vehicle Traction Inverter | Automotive On-Board Charger (OBC) |
|---|---|
|
Use Scenario: High-power 3-phase inverter converting battery DC to AC for permanent magnet synchronous motors in BEVs. IC Role / Device Role / Timing Role: Isolated gate driver controlling SiC FET half-bridges with cycle-by-cycle DESAT protection and synchronized soft shutdown. Use Value: Enables 800 V battery architectures with >98% inverter efficiency, reduced heatsink size, and ASIL-B fault handling via integrated FLTb/RSTb signaling. |
Use Scenario: Bidirectional AC/DC and DC/DC conversion in 11–22 kW OBCs for Level 2 and DC fast charging. IC Role / Device Role / Timing Role: Gate driver for SiC MOSFETs in totem-pole PFC and isolated DC-DC stages, managing high-frequency switching and thermal stress. Use Value: Integrated DC-DC eliminates external isolated bias supplies, reducing BOM count by 3–5 components while maintaining 125 kV/µs CMTI in noisy charging environments. |
| Industrial Motor Drive Inverter | Renewable Energy Solar Inverter |
|
Use Scenario: Variable-speed drives for HVAC compressors and industrial pumps operating at 400–690 V AC line voltages. IC Role / Device Role / Timing Role: Dual-channel isolated driver delivering ±4 A peak current to SiC FETs with real-time DESAT monitoring and Miller clamping. Use Value: Reduces switching losses by 35% vs. silicon IGBT drivers, enabling smaller magnetics and passive components in compact IPM modules. |
Use Scenario: String-level DC optimizers and central inverters converting photovoltaic array output to grid-synchronized AC. IC Role / Device Role / Timing Role: High-CMTI gate driver for SiC FETs in MPPT boost stages and transformerless H-bridge inverters exposed to solar farm EMI. Use Value: 5.0 kVrms isolation and 125 kV/µs CMTI ensure reliable operation in ungrounded PV arrays with high common-mode voltage transients. |
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 |
|---|---|---|---|
| SI8284DC-ASR | Same 24-pin WB SOIC package, identical 13 V UVLO and 5.0 kVrms rating, but lacks programmable frequency control and soft-start inputs. | Targeted at cost-sensitive industrial inverters where EMI tuning and inrush limiting are not required. | Select SI8286DC-ASR when programmable DC-DC frequency and controlled startup are needed for automotive EMC compliance. |
| UCC5870QDWJRQ1 | Texas Instruments' AEC-Q100 qualified 5.7 kVRMS isolated driver with integrated DC-DC, but uses internal switch topology limiting max input to 15 V. | Better suited for 12 V auxiliary-rail systems; cannot support 24 V input like SI8286DC-ASR's external-switch configuration. | Choose SI8286DC-ASR for higher input voltage flexibility and superior 125 kV/µs CMTI in 800 V EV architectures. |
Compared with SI8284DC-ASR, SI8286DC-ASR adds frequency control and soft-start for EMI optimization and inrush management; versus UCC5870QDWJRQ1, it enables higher input voltage operation and delivers 125 kV/µs CMTI - critical for traction inverter reliability in high-dV/dt environments.
Availability
SI8286DC-ASR is available at Aetrix Electronics and suitable for electric vehicle traction inverters, automotive on-board chargers, and industrial motor drives requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for SI8286DC-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 and mixed-signal semiconductors, specializing in RF, power management, and isolation technologies for high-performance wireless and power systems.
The SI828x family was developed to address the demanding gate drive, safety, and isolation requirements of next-generation SiC and GaN power systems - particularly in automotive electrification and renewable energy infrastructure.
FAQ
What is the isolation voltage rating of the SI8286DC-ASR?
The SI8286DC-ASR is rated for 5.0 kVrms isolation per UL1577, with reinforced insulation certified to IEC 62368-1 (VDE/CSA/CQC). This rating ensures safe operation in 800 V battery systems and meets automotive functional safety requirements for reinforced barrier integrity under transient overvoltage conditions.
Does the SI8286DC-ASR support SiC FETs with 13 V gate drive?
Yes, the SI8286DC-ASR features a 13 V UVLO threshold (VDDB–VMID) specifically tuned for SiC FET gate bias stability. Its ±4.0 A peak output current and dedicated Miller clamp (CLMP) pin ensure robust turn-on/turn-off control and prevent parasitic conduction in high-speed SiC switching applications.
How does the desaturation detection work on the SI8286DC-ASR?
The SI8286DC-ASR monitors VDS/VCE via the DSAT pin using an external RDSAT resistor and DDSAT diode. When voltage exceeds 7 V (with 220 mV hysteresis) beyond the blanking period set by CBL, it triggers <1 µs soft shutdown and asserts FLTb low. The blanking capacitor must be placed close to the DSAT pin for accurate timing.
What package type is used for the SI8286DC-ASR?
The SI8286DC-ASR is supplied in a 24-pin wide-body SOIC (WB SOIC-24) package with enhanced creepage and clearance for reinforced insulation. This RoHS-compliant package supports JEDEC-standard 260 °C reflow and is optimized for thermal performance in high-power automotive modules.
Is the SI8286DC-ASR AEC-Q100 qualified?
Yes, the SI8286DC-ASR is AEC-Q100 Grade 1 qualified and manufactured using full automotive process flows, including PPAP documentation, IMDS/CAMDS listing, and zero-defect methodology. It operates reliably from –40 °C to +125 °C ambient and supports ASIL-B system-level safety architectures.
SI8286DC-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:
- 3750Vrms
- 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:
- 14V ~ 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, UL, VDE
SI8286DC-ASR FAQ
1.How can I place an order for SI8286DC-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8286DC-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 SI8286DC-ASR reliable?
The price and inventory of SI8286DC-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8286DC-ASR is usually 5 days.
3.What payment methods are accepted for SI8286DC-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8286DC-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8286DC-ASR?
SI8286DC-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8286DC-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 SI8286DC-ASR?
For technical support, including SI8286DC-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8286DC-ASR requirements.
6.How does Aetrix verify that SI8286DC-ASR is sourced from the original manufacturer or authorized distributors?
All SI8286DC-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 SI8286DC-ASR meets industry standards.
7.What is the process for return or replacement of SI8286DC-ASR?
All SI8286DC-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI8286DC-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 SI8286DC-ASR part is unused and in its original packaging.
Return procedure for SI8286DC-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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