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Skyworks Solutions Inc. SI8286DC-ISR
- Part No.:
- SI8286DC-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8286DC-ISR.pdf
- Description:
- DGT ISO 3.75KV 1CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,025
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Product details
Overview
SI8286DC-ISR from Skyworks is a SiC FET–ready isolated gate driver with integrated DC-DC converter, designed for high-reliability motor inverters and traction systems. It delivers 4 A peak sink/source drive current, supports 5.0 kVrms isolation (UL 1577), features desaturation detection with <1 µs response, and operates across –40 to +125 °C. Its dual-output architecture (VH/VL) enables independent gate resistor control for precise SiC FET switching in EV on-board chargers.
For engineers reviewing the SI8286DC-ISR datasheet, SI8286DC-ISR pinout, SI8286DC-ISR application, or SI8286DC-ISR equivalent, this page provides verified technical context, real-world timing and safety parameters, package-specific layout guidance, and validated alternatives for SiC gate drive designs requiring reinforced insulation, soft shutdown, and integrated isolated bias supply.
Technical Context
The SI8286DC-ISR implements RF-based silicon isolation with 125 kV/µs common-mode transient immunity (CMTI), enabling robust operation in high-dV/dt SiC inverter environments. Its integrated DC-DC controller supports external power switches and programmable frequency dithering to minimize EMI in automotive-grade power stages.
It features complementary digital inputs (IN+/IN−), active-high RDY and open-drain FLTb outputs, dedicated DSAT sensing with 7 V threshold and 220 mV hysteresis, and an internal Miller clamp to prevent parasitic turn-on in half-bridge configurations. UVLO thresholds are fixed at 13 V on the driver side (VDDB), with hysteresis ensuring stable gate drive under rail transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5.0 kVrms withstand voltage per UL 1577 - enables reinforced insulation in 800 V EV systems without external isolation barriers |
| Peak Output Current | ±4 A - sufficient to drive high-Qg SiC FETs (e.g., Wolfspeed C3M0065090D) with <50 ns rise/fall times |
| Desat Detection Time | <1 µs - ensures sub-microsecond fault response before IGBT/SiC FET thermal runaway |
| Driver-Side UVLO | 13 V (nominal) with hysteresis - matches SiC FET gate drive requirements and prevents partial turn-on during brownout |
| CMTI | 125 kV/µs - maintains signal integrity in high-speed SiC switching nodes with >50 V/ns transients |
| DC-DC Efficiency | 83% - reduces heat generation in compact OBC and traction inverter layouts where space limits heatsinking |
| Operating Temperature | –40 to +125 °C - qualified for under-hood automotive applications per AEC-Q100 Grade 1 |
Pinout & Package
SI8286DC-ISR is housed in a 24-pin wide-body SOIC package (WB SOIC-24) with creepage/clearance optimized for 5.0 kVrms reinforcement. The package meets RoHS standards and supports 260 °C peak reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN− | Complementary logic inputs | Enable flexible active-high or active-low control; differential routing improves noise immunity in noisy inverter PCBs |
| VH, VL | High-side and low-side gate drive outputs | Separate pins allow independent gate resistors for optimizing SiC FET turn-on/turn-off dv/dt and EMI |
| DSAT | Desaturation sense input | Monitors switch VDS/VCE via external RDSAT/DDSAT; triggers soft shutdown if >7 V sustained beyond blanking period |
| /FLT, /RST | Open-drain fault output and active-low reset | Enables OR'ed fault bus across multiple drivers; requires external pull-up; reset must be held low ≥350 ns to clear DESAT latch |
| RDY | Power-ready indicator | Push-pull output goes high only when both VDDA and VDDB exit UVLO - confirms isolated supply stability before enabling PWM |
| CLMP | Miller clamp control | Internally clamps gate to VMID during off-state to suppress Miller-induced false turn-on in half-bridge topologies |
| VMID, VSSB | Midpoint and negative bias reference | Supports optional negative gate bias (e.g., –5 V) when VSSB is floated from VMID - reduces SiC FET switching losses |
Key Features
| Feature | Design Value |
|---|---|
| Integrated DC-DC controller with external switch support | Accepts up to 24 V input; enables isolated 15 V gate supply for SiC FETs without discrete flyback IC or transformer driver |
| Programmable soft-start and shutdown control | Prevents inrush current into gate capacitance and avoids destructive dV/dt spikes during fault recovery |
| Dedicated DSAT pin with 7 V threshold and 220 mV hysteresis | Eliminates need for external comparator and reference; blanking time set by external CBL capacitor (220–270 pF for SiC) |
| Milliclamped output with VMID-referenced discharge path | Actively pulls gate to VMID during off-time - critical for preventing shoot-through in high-frequency SiC half-bridges |
| AEC-Q100 Grade 1 qualification and PPAP support | Validated for automotive traction inverters and on-board chargers with full IMDS/CAMDS documentation |
Applications
| EV Traction Inverter | Industrial SiC Motor Drive |
|---|---|
Use Scenario: Driving 1200 V SiC half-bridge modules in 400–800 V battery-fed traction inverters for BEVs. IC Role / Device Role / Timing Role: Isolated gate driver providing 4 A peak current, DESAT protection, and integrated 15 V isolated bias for upper/lower switches. Use Value: Enables single-chip gate drive with 5.0 kVrms isolation and 125 kV/µs CMTI - eliminates optocoupler + DC-DC combo, reducing BOM count by 3+ components. |
Use Scenario: Controlling 1700 V SiC modules in variable-speed drives for HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: High-CMTI isolated driver with soft shutdown and programmable frequency dithering to meet CISPR-11 Class A EMI limits. Use Value: Integrated dithering and 83% efficient DC-DC reduce conducted emissions by >10 dBµV in 150 kHz–30 MHz band without external filters. |
| On-Board Charger (OBC) | Renewable Energy Inverter |
Use Scenario: Bidirectional AC/DC and DC/DC conversion in 11 kW OBCs using dual-active-bridge topology. IC Role / Device Role / Timing Role: Gate driver with RDY/FLT signaling and UVLO tracking for synchronized control of primary and secondary SiC FETs. Use Value: RDY pin confirms stable isolated supply before enabling synchronous rectification - prevents shoot-through during soft-start sequencing. |
Use Scenario: Grid-tied solar string inverters operating at 1500 V DC input with SiC-based three-level NPC topology. IC Role / Device Role / Timing Role: Isolated driver supporting Miller clamp and DESAT for high-side/low-side switches in multi-level configurations. Use Value: CLMP pin actively discharges gate during dead-time - suppresses Miller-induced turn-on even at 100 kHz switching with 100 V/ns transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated SiC gate drive applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8284DC-IS | Same 24-pin WB SOIC package, 5.0 kVrms isolation, 13 V UVLO, but includes shutdown, soft-start, and frequency control pins not present on SI8286DC-ISR | Designed for systems requiring dynamic DC-DC modulation (e.g., adaptive bias scaling in fast-transient OBCs) | Select Si8284DC-IS when programmable DC-DC frequency or controlled shutdown is required; SI8286DC-ISR offers simplified pinout for fixed-frequency use cases |
| UCC5870QDWJRQ1 | Texas Instruments part with 5.7 kVrms isolation, 10 A peak drive, but no integrated DC-DC - requires external isolated bias supply | Better suited for high-current 3.3 kV SiC modules where gate charge exceeds 4 A capability | Choose UCC5870QDWJRQ1 when higher peak current (>6 A) or higher isolation rating (>5.0 kVrms) is mandatory; SI8286DC-ISR reduces system complexity with monolithic DC-DC |
Compared with Si8284DC-IS, SI8286DC-ISR removes SH/FC and SS pins to simplify layout and reduce control overhead, while retaining identical isolation, drive strength, and safety features. Against UCC5870QDWJRQ1, SI8286DC-ISR trades peak current headroom for integrated bias generation - lowering total solution size and cost in mid-power SiC OBC and inverter designs.
Availability
SI8286DC-ISR is available at Aetrix Electronics and suitable for EV traction inverters, on-board chargers, and industrial SiC motor drives requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for SI8286DC-ISR 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 Si828x family was developed specifically for next-generation SiC and GaN power systems, integrating gate drive, isolation, safety monitoring, and isolated bias into a single package to replace multi-chip optocoupler + DC-DC solutions.
FAQ
What is the isolation voltage rating of the SI8286DC-ISR and which safety standards does it meet?
The SI8286DC-ISR provides 5.0 kVrms isolation per UL 1577 for 1 minute and is certified to IEC/EN 62368-1 (reinforced insulation) by VDE and CSA. It also holds CQC certification to GB4943.1-2011. These approvals confirm its suitability for reinforced insulation in 800 V battery systems and industrial 1500 V DC applications where creepage and clearance must exceed 8 mm.
Does the SI8286DC-ISR include an integrated DC-DC converter, and what are its key operating parameters?
Yes, the SI8286DC-ISR integrates a feedback-controlled DC-DC converter that supports external power switches and achieves 83% efficiency. It accepts input voltages up to 24 V and generates a regulated isolated output (e.g., 15 V) for the driver side. Unlike Si8281/Si8282 variants, SI8286DC-ISR uses the Si8284-style external-switch architecture, enabling higher input voltage tolerance and flexible transformer selection.
How does the desaturation (DESAT) protection work on the SI8286DC-ISR, and what external components are required?
The SI8286DC-ISR monitors switch VDS/VCE via the DSAT pin using an internal 7 V threshold comparator with 220 mV hysteresis. External components include a current-limiting resistor (RDSAT ≈ 100 Ω), a fast diode (DDSAT), and a blanking capacitor (CBL = 220–270 pF for SiC). CBL sets the blanking time; the internal current source charges it to delay fault detection during turn-on transients.
What is the purpose of the CLMP pin on the SI8286DC-ISR, and how should it be connected?
The CLMP pin enables the internal Miller clamp function, which actively pulls the gate to VMID during the off-state to prevent parasitic turn-on caused by high dV/dt across the switch's drain-to-gate capacitance. It requires no external components - simply connect CLMP directly to the gate node of the driven SiC FET or IGBT. This feature is essential in half-bridge topologies where Miller coupling could otherwise cause shoot-through.
Is the SI8286DC-ISR qualified for automotive applications, and what documentation is available?
Yes, SI8286DC-ISR is AEC-Q100 Grade 1 qualified (–40 to +125 °C) and supported with full PPAP documentation, IMDS and CAMDS listings, and AIAG-compliant manufacturing flows. Skyworks provides automotive-grade datasheets, failure-in-time (FIT) data, and reliability reports - all accessible through Aetrix Electronics' engineering portal for SI8286DC-ISR design-in support.
SI8286DC-ISR 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:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
- Approval Agency:
- CQC, CSA, UL, VDE
SI8286DC-ISR FAQ
1.How can I place an order for SI8286DC-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8286DC-ISR 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-ISR reliable?
The price and inventory of SI8286DC-ISR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8286DC-ISR is usually 5 days.
3.What payment methods are accepted for SI8286DC-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8286DC-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8286DC-ISR?
SI8286DC-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8286DC-ISR 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-ISR?
For technical support, including SI8286DC-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8286DC-ISR requirements.
6.How does Aetrix verify that SI8286DC-ISR is sourced from the original manufacturer or authorized distributors?
All SI8286DC-ISR 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-ISR meets industry standards.
7.What is the process for return or replacement of SI8286DC-ISR?
All SI8286DC-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8286DC-ISR, 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-ISR part is unused and in its original packaging.
Return procedure for SI8286DC-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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