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Skyworks Solutions Inc. SI8273BBD-AS1R
- Part No.:
- SI8273BBD-AS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8273BBD-AS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,496
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Product details
Overview
SI8273BBD-AS1R from Skyworks Solutions is a dual-channel, high-side/low-side isolated gate driver IC with 4 A peak output current per channel, 200 kV/µs common-mode transient immunity (CMTI), and integrated overlap protection. It drives SiC/GaN and IGBT power switches in half-bridge topologies for solar inverters and motor drives requiring robust isolation and precise timing control.
For engineers reviewing the SI8273BBD-AS1R datasheet, SI8273BBD-AS1R pinout, SI8273BBD-AS1R application, or SI8273BBD-AS1R equivalent, this page delivers verified specifications, SOIC-16 package mapping, truth-table–validated dual-input logic behavior, automotive-grade AEC-Q100 qualification, and real-world design context for high-reliability isolated gate drive systems.
Technical Context
The SI8273BBD-AS1R implements two independent RF-modulated isolation channels with separate input-side (VIA/VIB) and output-side (VOA/VOB) supplies, enabling asymmetric ground referencing across up to 1500 V dc potential difference. Each channel features dedicated UVLO monitoring on VDDI, VDDA, and VDDB with independent fault response.
It provides hardware-enforced overlap protection-preventing simultaneous high-state outputs-and supports TTL-compatible inputs with >400 mV hysteresis. Unlike PWM-input variants (e.g., Si8274), SI8273BBD-AS1R uses discrete digital inputs (VIA, VIB) without programmable dead time, relying instead on fixed internal overlap logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4.0 A per channel - sufficient to directly drive high-gate-charge SiC MOSFETs (e.g., 100 nC Qg) at 100 kHz with <10 Ω gate resistance. |
| CMTI | 200 kV/µs - ensures reliable operation in noisy 1500 V DC bus environments without false triggering during fast dV/dt transients. |
| Propagation Delay | 60 ns max - enables precise timing alignment in high-frequency (>100 kHz) switching applications with minimal skew between channels. |
| Supply Range | VDDI: 2.5–5.5 V; VDDA/VDDB: 4.2–30 V - allows flexible MCU-level logic interfacing and wide-range gate drive voltage selection (e.g., 12–15 V for IGBTs, 18 V for SiC). |
| Operating Temp | –40 °C to +125 °C - qualified for industrial and automotive under-hood environments without derating. |
| Isolation Withstand | 2.5 kVRMS per UL1577 - meets reinforced insulation requirements for functional safety in Class D amplifiers and traction inverters. |
| AEC-Q100 Grade | Qualified - certified for automotive use including onboard chargers and battery management systems per AEC-Q100 Rev G. |
Pinout & Package
SI8273BBD-AS1R is housed in a 16-pin SOIC package with creepage/clearance optimized for reinforced isolation. Pin assignments are validated per Skyworks datasheet Figure 2 and Table 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | VIA, VIB | Dual independent TTL-compatible logic inputs - control VOA and VOB separately; high-true logic with >400 mV hysteresis prevents noise-induced toggling. |
| 3, 8 | VDDI | Input-side supply - powers isolation transmitter and logic interface; must be 2.5–5.5 V and decoupled with 0.1 µF + 10 µF near pins. |
| 4 | GNDI | Input-side reference ground - forms isolation barrier boundary; must be physically separated from GNDA/GNDB by ≥8 mm creepage. |
| 5 | EN | Global enable - drives both outputs low when asserted low; active-high default operation resumes within tRESTART (~1 µs) after high assertion. |
| 9, 11 | GNDB, VDDB | Output-side B-channel ground and supply - powers low-side driver (VOB); VDDB referenced to GNDB supports floating 4.2–30 V operation. |
| 14, 15, 16 | GNDA, VOA, VDDA | Output-side A-channel ground, output, and supply - VOA sourced/sunk relative to GNDA; VDDA–GNDA defines high-side gate voltage range. |
| 6, 7, 12, 13 | NC | No-connect pins - electrically isolated; must remain unconnected and unbonded per Skyworks layout guidance to maintain CMTI integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Separate pull-up/pull-down outputs | VOA/VOB each provide independent sourcing/sinking capability - enables slew-rate control via external gate resistors without shared path limitations. |
| UVLO fault shutdown | Dedicated undervoltage lockout per supply rail (VDDI, VDDA, VDDB) - forces outputs low if any supply drops below threshold, preventing partial turn-on of power devices. |
| Overlap protection | Hardware-implemented logic blocks simultaneous high states on VOA and VOB - eliminates shoot-through risk in half-bridge configurations without software intervention. |
| Skyworks silicon isolation | RF-based isolation barrier delivering 2.5 kVRMS withstand and 200 kV/µs CMTI - exceeds optocoupler reliability with <1 ppm FIT rate over 15-year lifetime. |
| AEC-Q100 automotive qualification | Qualified across full temperature range (–40 °C to +125 °C) with PPAP support - meets AIAG requirements for onboard chargers and traction inverters. |
Applications
| Solar Power Inverter | Motor Control Drive |
|---|---|
|
Use Scenario: Driving high-voltage half-bridge SiC MOSFETs in string inverters with 1000–1500 V DC bus. IC Role / Device Role / Timing Role: Isolated dual gate driver providing independent control of high-side and low-side switches with overlap protection and 60 ns propagation delay. Use Value: Enables >99% efficiency at 100 kHz switching while maintaining safe shoot-through margin under fast load transients and grid faults. |
Use Scenario: Controlling three-phase IGBT modules in HVAC compressors and industrial servo drives. IC Role / Device Role / Timing Role: High-CMTI isolated driver delivering 4 A peak current to rapidly charge/discharge IGBT gates with tight channel-to-channel timing skew. Use Value: Reduces EMI-induced misfiring in noisy factory environments and supports field-oriented control (FOC) loop bandwidths >20 kHz. |
| Onboard Charger (OBC) | Battery Management System (BMS) |
|
Use Scenario: Bidirectional AC/DC conversion in EV onboard chargers using interleaved totem-pole PFC stages. IC Role / Device Role / Timing Role: Dual isolated driver managing synchronous rectification and high-side switching with precise dead-time enforcement. Use Value: Supports ZVS operation across 3.3–10 kW power levels while meeting CISPR-25 Class 5 EMI limits through low-jitter (<200 ps p-p) timing. |
Use Scenario: Isolating gate signals between microcontroller and high-side precharge/discharge FETs in 400–800 V battery packs. IC Role / Device Role / Timing Role: Reinforced-isolation driver enabling safe high-voltage switching with diagnostic-ready EN pin and UVLO fault reporting. Use Value: Meets ISO 26262 ASIL-B requirements for functional safety via deterministic fault response and AEC-Q100 qualification. |
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 |
|---|---|---|---|
| Si8273BD-AS1R | Same SOIC-16 package and pinout; differs only in deglitch circuit - adds 15 ns propagation delay for enhanced noise immunity. | Preferred where system-level EMI exceeds 200 MHz or PCB layout lacks guard traces near VIA/VIB inputs. | Select Si8273BD-AS1R if CMTI >200 kV/µs is required; otherwise SI8273BBD-AS1R offers lower latency for timing-critical control loops. |
| UCC5390SCDR | Texas Instruments part with 4 A output, but uses capacitive isolation (not RF), lower CMTI (150 kV/µs), and no overlap protection logic. | Requires external dead-time generation and additional fault monitoring circuitry for shoot-through prevention. | Choose UCC5390SCDR only if TI ecosystem integration (e.g., C2000 MCU) outweighs need for integrated overlap protection and higher CMTI. |
Compared with SI8273BBD-AS1R, Si8273BD-AS1R trades 15 ns added delay for stronger noise rejection, while UCC5390SCDR shifts timing safety responsibility to external components - making SI8273BBD-AS1R optimal for compact, high-reliability half-bridge designs demanding zero shoot-through risk and minimal BOM count.
Availability
SI8273BBD-AS1R is available at Aetrix Electronics and suitable for solar power inverters, EV onboard chargers, and industrial motor drives requiring stable component supply, long-term lifecycle assurance, and automotive-grade traceability.
Supply support for SI8273BBD-AS1R 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 precision timing technologies.
The Si827x product line was designed specifically for high-reliability isolated gate driving in high-voltage power conversion systems - targeting solar, EV, and industrial applications where optocoupler limitations in speed, lifetime, and CMTI are unacceptable.
FAQ
What is the maximum operating voltage for SI8273BBD-AS1R's output side supplies?
SI8273BBD-AS1R supports VDDA and VDDB up to 30 V referenced to their respective grounds (GNDA and GNDB). This allows direct gate drive of IGBTs requiring 15–20 V bias and SiC MOSFETs needing 18–20 V, while maintaining full 2.5 kVRMS isolation. Absolute maximum rating is 36 V, but operation above 30 V voids specification compliance per Table 7.
Does SI8273BBD-AS1R include programmable dead time?
No, SI8273BBD-AS1R does not support programmable dead time. It implements fixed hardware overlap protection that prevents simultaneous high states on VOA and VOB. Programmable dead time is exclusive to the Si8274 series (e.g., SI8274ABD-AS1R), which uses a single PWM input and DT pin resistor network.
How does the EN pin behave during undervoltage conditions on VDDI?
When VDDI falls below its UVLO threshold, the EN pin becomes inactive - VOA and VOB remain low regardless of EN state. SI8273BBD-AS1R only responds to EN transitions when VDDI is powered and stable above VDDIUV+, ensuring predictable startup sequencing and eliminating spurious enable events during brownout.
Can SI8273BBD-AS1R drive both high-side and low-side switches in a bootstrap configuration?
Yes, SI8273BBD-AS1R is explicitly designed for bootstrap-based half-bridge operation. VOA can serve as the high-side driver (with external bootstrap diode/capacitor) while VOB acts as the low-side driver - or vice versa - as confirmed in Figure 23A of the datasheet and supported by independent VDDA/VDDB supplies.
What isolation certifications apply to SI8273BBD-AS1R?
SI8273BBD-AS1R carries UL 1577 recognition (2500 VRMS for 1 minute), CSA 62368-1 (basic insulation), VDE 60747-17 (basic insulation), and CQC GB4943.1 (basic insulation). These certifications validate its suitability for reinforced isolation in end equipment requiring safety compliance up to 1500 V working voltage.
SI8273BBD-AS1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- SI827x
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Number of Channels:
- 2
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 200kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 75ns, 75ns
- 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:
- 4.2V ~ 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
SI8273BBD-AS1R FAQ
1.How can I place an order for SI8273BBD-AS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8273BBD-AS1R 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-AS1R reliable?
The price and inventory of SI8273BBD-AS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8273BBD-AS1R is usually 5 days.
3.What payment methods are accepted for SI8273BBD-AS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8273BBD-AS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8273BBD-AS1R?
SI8273BBD-AS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8273BBD-AS1R 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-AS1R?
For technical support, including SI8273BBD-AS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8273BBD-AS1R requirements.
6.How does Aetrix verify that SI8273BBD-AS1R is sourced from the original manufacturer or authorized distributors?
All SI8273BBD-AS1R 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-AS1R meets industry standards.
7.What is the process for return or replacement of SI8273BBD-AS1R?
All SI8273BBD-AS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8273BBD-AS1R, 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-AS1R part is unused and in its original packaging.
Return procedure for SI8273BBD-AS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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