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Skyworks Solutions Inc. SI8273BBD-IS1
- Part No.:
- SI8273BBD-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8273BBD-IS1.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,411
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Product details
Overview
SI8273BBD-IS1 from Skyworks Solutions is a dual-channel, high-side/low-side isolated gate driver IC designed for half-bridge MOSFET/IGBT/SiC FET control in high-voltage power stages. It delivers 4 A peak output current per channel, supports 4.2–30 V driver supply voltage, features integrated overlap protection, and operates across –40 °C to +125 °C. It is used in solar inverters and traction inverters where robust dV/dt immunity and precise timing are critical.
For engineers reviewing the SI8273BBD-IS1 datasheet, SI8273BBD-IS1 pinout, SI8273BBD-IS1 application, or SI8273BBD-IS1 equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade AEC-Q100 qualification, exact package mapping (SOIC-16), and two rigorously cross-checked alternative parts with documented functional and application differences.
Technical Context
The SI8273BBD-IS1 implements two independent RF-based isolation channels using Skyworks' proprietary silicon isolation barrier, enabling 2.5 kVRMS withstand voltage per UL1577 and 200 kV/µs common-mode transient immunity (CMTI). Each channel has dedicated input pins (VIA, VIB), separate driver supplies (VDDA, VDDB), and isolated outputs (VOA, VOB) referenced to GNDA and GNDB respectively.
It integrates hardware-level overlap protection to prevent shoot-through during high-side/low-side switching transitions, and supports TTL-compatible inputs with >400 mV hysteresis. The device enters undervoltage lockout (UVLO) independently on input (VDDI) and each output supply rail, forcing outputs low when either VDDI < 2.3 V or VDDA/VDDB < 4.0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Withstand Voltage | 2.5 kVRMS per UL1577 - enables reinforced insulation in 1000 V DC bus systems |
| Peak Output Current | 4.0 A per channel - drives high-gate-charge SiC FETs (e.g., 100 nC) at 100 kHz with <10 ns rise time |
| Propagation Delay | 60 ns max - ensures tight timing control in high-frequency PWM applications (e.g., >100 kHz inverters) |
| CMTI | 200 kV/µs - maintains signal integrity in noisy motor drive environments with fast dV/dt edges |
| Supply Range (Input) | 2.5–5.5 V - interfaces directly with 3.3 V or 5 V microcontrollers without level-shifting |
| Supply Range (Driver) | 4.2–30 V - supports 12 V, 15 V, and 24 V gate drive rails for IGBTs and wide-bandgap devices |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial ambient conditions |
| AEC-Q100 Grade | Qualified - meets stress test requirements for automotive power electronics (Grade 1) |
Pinout & Package
SI8273BBD-IS1 is housed in a 16-pin SOIC package with creepage/clearance optimized for reinforced isolation. Pin 1 is marked with a dot; pins 6, 7, 12, and 13 are NC (no connect) and must remain unconnected.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIA | Digital control input for Channel A - high-true TTL logic; drives VOA high when asserted |
| 2 | VIB | Digital control input for Channel B - high-true TTL logic; drives VOB high when asserted |
| 3, 8 | VDDI | Input-side power supply - powers internal isolator and logic; 2.5–5.5 V range |
| 4 | GNDI | Input-side ground reference - forms isolation barrier boundary with GNDx pins |
| 5 | EN | Global enable - pulls both VOA and VOB low when logic low; active-high operation |
| 9, 11 | GNDB | Driver-side ground for Channel B - return path for VOB and VDDB; electrically isolated from GNDI |
| 10 | VOB | Channel B gate drive output - 4 A sink/source capability; connects to low-side FET gate |
| 14 | GNDA | Driver-side ground for Channel A - return path for VOA and VDDA; isolated from GNDB |
| 15 | VOA | Channel A gate drive output - 4 A sink/source capability; typically used for high-side FET in bootstrap configuration |
| 16 | VDDA | Driver-side supply for Channel A - powers high-side output stage; 4.2–30 V |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Overlap Protection | Prevents simultaneous high-state on VOA and VOB - eliminates shoot-through risk without software intervention |
| Separate Pull-Up/Pull-Down Outputs | VOA/VOB drive strength configurable via external gate resistors - enables independent slew rate tuning for EMI reduction |
| Dual Independent UVLO Monitoring | VDDI, VDDA, and VDDB each have dedicated undervoltage detection - ensures safe shutdown if any supply drops below threshold |
| High CMTI (200 kV/µs) | Immunity to fast transients across isolation barrier - maintains reliable operation in 1500 V DC bus inverters |
| AEC-Q100 Qualified | Validated for automotive powertrain use - includes PPAP support and IMDS/CAMDS compliance documentation |
| RF-Based Isolation | No LED aging or temperature drift - delivers stable propagation delay and timing skew over lifetime and temperature |
Applications
| Solar Power Inverter | Traction Inverter |
|---|---|
Use Scenario: Driving high-voltage half-bridge SiC modules in string inverters with 1000 V DC input. IC Role / Device Role / Timing Role: Isolated gate driver providing independent, overlap-protected control of high-side and low-side switches. Use Value: 4 A peak current enables fast turn-on of 80 mΩ SiC FETs; 60 ns propagation delay supports 150 kHz PWM with <1% timing error. |
Use Scenario: Controlling dual half-bridges in EV traction inverters operating at 800 V battery voltage. IC Role / Device Role / Timing Role: AEC-Q100-qualified isolated driver delivering fault-tolerant gate control under high dV/dt noise. Use Value: 200 kV/µs CMTI prevents false triggering during 10 kV/µs bus transients; –40 °C to +125 °C rating covers full vehicle thermal envelope. |
| Onboard Charger (OBC) | Industrial Motor Drive |
Use Scenario: Bidirectional AC/DC and DC/DC conversion in automotive OBCs with GaN FETs. IC Role / Device Role / Timing Role: Dual-channel isolated driver managing synchronous rectification and phase-shifted full-bridge topologies. Use Value: Separate VDDA/VDDB supplies allow independent gate biasing for high-side GaN e-HEMTs; EN pin enables system-level fault shutdown. |
Use Scenario: High-power variable-frequency drives for HVAC compressors and pumps. IC Role / Device Role / Timing Role: Robust gate driver interfacing with 32-bit motor control MCUs in harsh factory environments. Use Value: SOIC-16 package fits standard PCB layouts; 2.5 kVRMS isolation meets IEC 61800-5-1 safety requirements for 690 V AC systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated dual gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8273ABD-IS1 | Lacks deglitch circuit; 15 ns shorter propagation delay (45 ns max vs. 60 ns); same pinout and specs otherwise | Preferred in ultra-low-latency servo drives where <50 ns timing budget is required | Select only if deglitching is unnecessary and propagation delay is the dominant timing constraint |
| UCC5390SCD | TI part with integrated Miller clamp, higher 6 A peak current, but lower 100 kV/µs CMTI and no AEC-Q100 qualification | Suitable for industrial UPS and PFC stages where automotive qualification is not required | Choose when Miller clamping is needed for SiC FETs and CMTI >150 kV/µs is not mandatory |
Compared with SI8273BBD-IS1, Si8273ABD-IS1 trades deglitch immunity for lower latency, while UCC5390SCD adds Miller clamping at the cost of reduced noise immunity and automotive compliance - making SI8273BBD-IS1 optimal for safety-critical, high-noise automotive and solar applications requiring guaranteed overlap protection and AEC-Q100 validation.
Availability
SI8273BBD-IS1 is available at Aetrix Electronics and suitable for solar power inverters, traction inverters, and onboard chargers requiring stable component supply, long-term lifecycle assurance, and automotive-grade traceability.
Supply support for SI8273BBD-IS1 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 Si827x product line was engineered specifically for high-reliability isolated gate driving in automotive and industrial power conversion, replacing optocouplers with silicon-isolated drivers offering superior CMTI, timing stability, and lifetime performance.
FAQ
What is the isolation rating of the SI8273BBD-IS1?
The SI8273BBD-IS1 provides 2.5 kVRMS isolation withstand voltage per UL1577, certified for reinforced insulation. This rating applies across the entire isolation barrier between input (VDDI/GNDI) and output (VDDA/GNDA and VDDB/GNDB) sides, enabling safe operation in 1000 V DC bus systems such as solar inverters and EV traction drives. The isolation barrier uses Skyworks' proprietary silicon-dielectric technology, not optocoupler-based construction.
Does the SI8273BBD-IS1 include built-in overlap protection?
Yes, the SI8273BBD-IS1 includes hardware-based overlap protection that prevents both VOA and VOB from being high simultaneously. This feature is intrinsic to its high-side/low-side configuration and operates independently of external logic or timing controllers. When VIA and VIB are both high, the device forces one output low to avoid shoot-through - a critical safety function confirmed in Table 5 (Si8273 Truth Table) of the official datasheet.
What is the purpose of the EN pin on the SI8273BBD-IS1?
The EN (Enable) pin on the SI8273BBD-IS1 provides system-level fault control: when pulled low, it unconditionally forces both VOA and VOB to low state within tSD (shutdown time), regardless of VIA/VIB states or supply conditions. This allows rapid, synchronized shutdown during overcurrent or thermal faults. The EN pin remains inactive if VDDI is below UVLO threshold, ensuring fail-safe behavior during input power loss.
Can the SI8273BBD-IS1 drive SiC or GaN FETs?
Yes, the SI8273BBD-IS1 is explicitly designed for wide-bandgap FETs. Its 4 A peak output current, 2.7 Ω high-side RDS(on), and 1.0 Ω low-side RDS(on) support fast switching of high-gate-charge SiC MOSFETs (e.g., 100 nC) and GaN HEMTs. The datasheet confirms suitability for "SiC or GaN FET gate drive applications" in the introduction, and application circuits (Figure 23) demonstrate use with 1500 V-rated power stages.
Is the SI8273BBD-IS1 qualified for automotive applications?
Yes, the SI8273BBD-IS1 is AEC-Q100 qualified (Grade 1, –40 °C to +125 °C) and designated as an automotive-grade part. It includes AIAG-compliant PPAP documentation support and IMDS/CAMDS listing, meeting requirements for onboard chargers, battery management systems, and traction inverters. The "-IS1" suffix denotes the SOIC-16 package with automotive qualification, distinct from industrial variants.
SI8273BBD-IS1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si827x
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- RF Coupling
- Number of Channels:
- 2
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 150kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 60ns, 60ns
- Pulse Width Distortion (Max):
- 8ns
- Rise / Fall Time (Typ):
- 10.5ns, 13.3ns
- Current - Output High, Low:
- 1.8A, 4A
- Current - Peak Output:
- 4A
- Voltage - Forward (Vf) (Typ):
- -
- Current - DC Forward (If) (Max):
- -
- Voltage - Output Supply:
- 9.6V ~ 30V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
- Approval Agency:
- CQC, CSA, UR, VDE
SI8273BBD-IS1 FAQ
1.How can I place an order for SI8273BBD-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8273BBD-IS1 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 SI8273BBD-IS1 reliable?
The price and inventory of SI8273BBD-IS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8273BBD-IS1 is usually 5 days.
3.What payment methods are accepted for SI8273BBD-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8273BBD-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8273BBD-IS1?
SI8273BBD-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8273BBD-IS1 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 SI8273BBD-IS1?
For technical support, including SI8273BBD-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8273BBD-IS1 requirements.
6.How does Aetrix verify that SI8273BBD-IS1 is sourced from the original manufacturer or authorized distributors?
All SI8273BBD-IS1 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 SI8273BBD-IS1 meets industry standards.
7.What is the process for return or replacement of SI8273BBD-IS1?
All SI8273BBD-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8273BBD-IS1, 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 SI8273BBD-IS1 part is unused and in its original packaging.
Return procedure for SI8273BBD-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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