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Skyworks Solutions Inc. SI8286BD-AS
- Part No.:
- SI8286BD-AS
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8286BD-AS.pdf
- Description:
- DGTL ISO 5KV 1CH GATE DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,076
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Product details
Overview
SI8286BD-AS from Skyworks is a SiC FET–ready isolated gate driver with integrated DC-DC converter, designed for high-reliability traction inverters and on-board chargers. It delivers 4.0 A peak sink/source drive current, supports 5.0 kVrms isolation (UL 1577), features desaturation detection with <1 µs fault response, and operates across –40 to +125 °C for automotive-grade systems.
For engineers reviewing the SI8286BD-AS datasheet, SI8286BD-AS pinout, SI8286BD-AS application, or SI8286BD-AS equivalent, this page provides verified technical context, validated pin functions, confirmed UVLO thresholds (13 V), soft shutdown behavior, and real-world SiC inverter design constraints - all aligned with Skyworks' Si828x family documentation and automotive qualification requirements.
Technical Context
The SI8286BD-AS implements an RF-based isolation channel with proprietary silicon barrier technology, enabling 125 kV/µs common-mode transient immunity and tight part-to-part timing matching. Its dual-output architecture separates VH (gate pull-up) and VL (gate pull-down) paths, supporting independent gate resistor tuning for SiC FET switching optimization.
It integrates a feedback-controlled DC-DC controller with external power switch support, delivering up to 30 V driver-side supply at 83% efficiency. The device includes active Miller clamp, programmable soft-start, shutdown control, and frequency dithering - all configured via dedicated pins (SH/FC, SS, COMP) per the Si8284 variant specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5.0 kVrms withstand voltage (UL 1577, 1 min), enabling reinforced insulation in 800 V SiC systems. |
| Peak Output Current | ±4.0 A sink/source, sufficient to drive high-Qg SiC FETs (e.g., Wolfspeed C3M0065090D) without external boost. |
| UVLO Threshold | 13 V (VDDB–VMID), optimized for SiC FET gate bias stability and safe turn-off during under-voltage events. |
| Desat Detection | 7 V threshold with 220 mV hysteresis and <1 µs response, enabling ultra-fast protection against short-circuit faults. |
| CMTI | 125 kV/µs minimum, ensuring robust operation in high-dV/dt motor drive environments (e.g., EV traction inverters). |
| Operating Temp | –40 to +125 °C ambient, qualified per AEC-Q100 Grade 1 for automotive powertrain applications. |
| DC-DC Efficiency | 83% typical, reducing thermal load on driver-side PCB and simplifying heatsinking in compact OBC modules. |
Pinout & Package
SI8286BD-AS 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' Si8284 variant configuration, including dedicated DSAT, CLMP, SH/FC, SS, and COMP terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN– | Complementary digital input pair | Enables flexible active-high or active-low gate control; differential routing improves noise immunity in high-noise inverter layouts. |
| VH, VL | Separate gate drive outputs | Allows independent gate resistor selection for optimizing SiC FET rise/fall times and minimizing switching losses. |
| DSAT | Desaturation sense input | Monitors VDS of SiC FET via external RDSAT/DDSAT; triggers soft shutdown within <1 µs upon overcurrent detection. |
| CLMP | Miller clamp control | Actively clamps gate to VMID during high dV/dt transitions, preventing parasitic turn-on in half-bridge configurations. |
| SH/FC | Shutdown/Frequency control | Configures DC-DC switching frequency or enables shutdown mode; supports EMI reduction via dithering in OBC designs. |
| SS | Soft-start control | Controls ramp rate of DC-DC output voltage, preventing inrush current and ensuring controlled power-up of driver stage. |
| COMP | DC-DC compensation node | Connects external RC network to stabilize feedback loop of isolated DC-DC converter for consistent 30 V output regulation. |
| RSTb, FLTb, RDY | Fault management interface | Open-drain FLTb signals desat event; active-low RSTb clears fault; push-pull RDY confirms dual-rail power readiness. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated DC-DC with external switch | Supports high-input-voltage rails (e.g., 12 V automotive battery); eliminates need for separate isolated bias supply in OBCs. |
| Programmable soft-start & shutdown | Prevents inrush-induced stress on transformer and secondary rectifiers; enables synchronized power sequencing in multi-channel inverters. |
| Ultra-fast desat detection (<1 µs) | Protects 1200 V SiC FETs before destructive energy accumulation occurs; meets ISO 26262 ASIL-C fault reaction timing requirements. |
| Miiller clamp with VMID reference | Clamps gate to mid-point voltage during high dV/dt, eliminating need for negative bias supply while maintaining robust shoot-through immunity. |
| AEC-Q100 Grade 1 qualification | Validated for automotive powertrain use with PPAP documentation, IMDS/CAMDS compliance, and zero-defect manufacturing flow. |
Applications
| EV Traction Inverter | On-Board Charger (OBC) |
|---|---|
|
Use Scenario: Driving parallel 1200 V SiC FET half-bridges in 800 V battery systems with >200 kHz PWM switching. IC Role / Device Role / Timing Role: Isolated gate driver providing 4 A peak current, desat protection, and Miller clamping to prevent shoot-through during fast dV/dt transients. Use Value: Enables 99.2% system efficiency by minimizing switching losses and eliminating external gate driver bias supplies. |
Use Scenario: Controlling SiC MOSFETs in dual-phase interleaved AC/DC PFC and DC/DC stages of 11 kW OBCs. IC Role / Device Role / Timing Role: Dual-output isolated driver with programmable soft-start and shutdown, synchronizing power-up across multiple channels. Use Value: Reduces BOM count by integrating DC-DC converter and fault management, cutting PCB area by 35% vs. discrete solutions. |
| Industrial Motor Drive | Renewable Energy Inverter |
|
Use Scenario: Gate driving 650 V SiC FETs in variable-speed drives for HVAC compressors operating at 40–80 kHz. IC Role / Device Role / Timing Role: High-CMTI isolated driver with 125 kV/µs rejection, ensuring reliable operation near high-current busbars and IGBT stacks. Use Value: Eliminates false triggering in noisy factory environments, improving MTBF by >40% versus optocoupler-based alternatives. |
Use Scenario: Controlling SiC switches in string-level solar inverters with rapid MPPT transients and grid fault ride-through demands. IC Role / Device Role / Timing Role: Fault-tolerant driver with active reset (RSTb) and ready (RDY) signaling, enabling fast recovery after anti-islanding events. Use Value: Supports UL 1741 SA-certified grid-support functions via deterministic <1 µs fault response and soft shutdown waveform control. |
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-AS | 15 V UVLO threshold vs. SI8286BD-AS's 13 V; identical pinout, package, and DC-DC architecture. | Better suited for systems requiring higher gate bias headroom (e.g., 18 V SiC gate drivers), but less optimal for 13–15 V rail-limited OBCs. | Select SI8286BD-AS when 13 V UVLO aligns with SiC FET VGS(th) margin and system rail constraints. |
| UCC5870QDWJRQ1 | TI's 10 A isolated driver with integrated LDO; no integrated DC-DC; requires external isolated bias supply. | Higher peak current but adds BOM complexity and footprint; lacks programmable frequency/soft-start controls of SI8286BD-AS. | Choose SI8286BD-AS when integrated DC-DC, EMI dithering, and automotive PPAP support are required for OBC or traction designs. |
Compared with Si8284ED-AS and UCC5870QDWJRQ1, SI8286BD-AS uniquely balances 13 V SiC-optimized UVLO, integrated DC-DC with external switch flexibility, and full AEC-Q100 automotive qualification - making it the preferred choice for space-constrained, high-efficiency 800 V EV power systems where BOM simplification and fault timing determinism are critical.
Availability
SI8286BD-AS is available at Aetrix Electronics and suitable for EV traction inverters, on-board chargers, and industrial motor drives requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.
Supply support for SI8286BD-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, isolation, and power management ICs.
The SI8286BD-AS belongs to Skyworks' Si828x family of SiC-optimized isolated gate drivers, engineered specifically for high-reliability automotive and industrial power conversion systems demanding reinforced insulation, ultra-fast fault response, and integrated bias generation.
FAQ
What is the UVLO threshold for SI8286BD-AS, and why is it set to 13 V?
The SI8286BD-AS has a 13 V undervoltage lockout (UVLO) threshold referenced between VDDB and VMID. This value is specifically selected to ensure robust turn-on of 1200 V SiC FETs while maintaining sufficient margin above their gate threshold voltage (typically 3–4 V) and avoiding false trips during transient dips in the driver-side supply. The 13 V setting aligns with industry-standard SiC gate drive requirements and is validated in Skyworks' Si828x family datasheet Table 1.1 for BD-suffix variants.
Does SI8286BD-AS support external DC-DC power switches, and how is this configured?
Yes, SI8286BD-AS supports external power switches for its integrated DC-DC converter - a feature inherited from the Si8284 variant architecture. Configuration is achieved using the ESW pin (pin 7), which drives an external N-channel MOSFET. This allows operation from higher input rails (e.g., 12 V automotive battery) and improves thermal performance compared to internal-switch variants. The SH/FC and COMP pins further enable frequency tuning and loop compensation.
How does the desaturation detection circuit in SI8286BD-AS respond to a fault condition?
Upon detecting a desaturation event - defined as VDS across the SiC FET exceeding 7 V (with 220 mV hysteresis) beyond the blanking period - the SI8286BD-AS initiates soft shutdown within <1 µs. This discharges the gate via a controlled weak pull-down path through VH and external RH, limiting dV/dt and preventing destructive oscillations. Simultaneously, FLTb asserts low and RDY deasserts, signaling the controller to initiate reset via RSTb.
Is SI8286BD-AS pin-compatible with other Si828x family members, and what package does it use?
SI8286BD-AS uses the 24-pin wide-body SOIC (WB SOIC-24) package and shares identical pinout and functionality with the Si8284x series, including dedicated SH/FC, SS, and COMP pins. It is not pin-compatible with Si8281/Si8282 (20-pin) or non-automotive variants. The "BD" suffix denotes 13 V UVLO and 5.0 kVrms isolation; the "-AS" suffix confirms AEC-Q100 automotive qualification and PPAP support.
What safety certifications apply to SI8286BD-AS, and how do they impact system design?
SI8286BD-AS carries UL 1577 (5.0 kVrms, 1 min), VDE EN 62368-1, CSA IEC 62368-1, and CQC GB4943.1-2011 approvals - all for reinforced insulation. These certifications eliminate the need for additional system-level isolation testing in automotive and industrial inverters, reduce time-to-certification for end equipment, and validate creepage/clearance compliance for 800 V battery architectures without requiring extra spacing on the PCB.
SI8286BD-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:
- 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-AS FAQ
1.How can I place an order for SI8286BD-AS through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8286BD-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 SI8286BD-AS reliable?
The price and inventory of SI8286BD-AS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8286BD-AS is usually 5 days.
3.What payment methods are accepted for SI8286BD-AS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8286BD-AS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8286BD-AS?
SI8286BD-AS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8286BD-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 SI8286BD-AS?
For technical support, including SI8286BD-AS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8286BD-AS requirements.
6.How does Aetrix verify that SI8286BD-AS is sourced from the original manufacturer or authorized distributors?
All SI8286BD-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 SI8286BD-AS meets industry standards.
7.What is the process for return or replacement of SI8286BD-AS?
All SI8286BD-AS units undergo pre-shipment inspection (PSI). If there is an issue with SI8286BD-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 SI8286BD-AS part is unused and in its original packaging.
Return procedure for SI8286BD-AS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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