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Skyworks Solutions Inc. SI8238BC-AS1R
- Part No.:
- SI8238BC-AS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8238BC-AS1R.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:1,370
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Product details
Overview
SI8238BC-AS1R from Skyworks Solutions is an automotive-grade dual isolated gate driver IC with 4.0 A peak output current, 3.75 kVRMS input-to-output isolation, and SOIC-16 narrow-body package. It features two independent isolated channels (VOA/VOB), TTL-compatible VIA/VIB inputs, 8 MHz max switching frequency, and operates across –40°C to +125°C for high-reliability motor control and inverter applications.
For engineers reviewing the SI8238BC-AS1R datasheet, SI8238BC-AS1R pinout, SI8238BC-AS1R application, or SI8238BC-AS1R equivalent, this page delivers verified specifications, automotive-qualified packaging details, dual-driver functional context, and real-world use cases in traction inverters and onboard chargers - all grounded in Skyworks' official Si823x family documentation.
Technical Context
The SI8238BC-AS1R implements RF-based silicon isolation with a semiconductor barrier, enabling robust noise immunity and fast 45 ns propagation delay. Its dual-channel architecture supports independent high-side and low-side MOSFET/IGBT gate driving without internal overlap protection or programmable dead time - distinguishing it from HS/LS variants like SI8233/34.
Each channel accepts TTL-level VIA or VIB inputs with >400 mV hysteresis and drives outputs referenced to separate grounds (GNDA/GNDB) or common ground. UVLO thresholds are fixed at 8 V on VDDI, VDDA, and VDDB, ensuring safe startup/shutdown behavior in automotive power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 3.75 kVRMS per UL1577 - enables reinforced insulation in 400–800 Vdc bus systems |
| Peak Output Current | 4.0 A per channel - sufficient to drive high-Ciss IGBTs and GaN FETs up to 100 kHz switching |
| Propagation Delay | 45 ns max - supports precise timing control in high-frequency half-bridge topologies |
| Supply Voltage Range | VDDI/VDDA/VDDB = 4.5–24 V - compatible with 5 V logic and 12–15 V gate drive rails |
| Operating Temperature | –40°C to +125°C - meets AEC-Q100 Grade 1 requirements for under-hood automotive use |
| Input Compatibility | TTL-level VIA/VIB with >400 mV hysteresis - rejects noise in electrically noisy motor control environments |
| Package | SOIC-16 narrow body - RoHS-compliant, JEDEC-standard 260°C reflow, 1.27 mm pitch |
Pinout & Package
SOIC-16 narrow-body package (5.3 mm × 10.2 mm, 1.27 mm pitch), RoHS-compliant, rated for 260°C peak reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIA | Channel A input | TTL-compatible logic input controlling VOA; >400 mV hysteresis improves noise margin |
| VIB | Channel B input | TTL-compatible logic input controlling VOB; independent of VIA for asymmetric drive |
| VDDI | Input-side supply | Powers internal RF transmitter; UVLO threshold = 8 V (rising) |
| GNDI | Input-side ground | Reference for VIA/VIB and internal isolation barrier |
| VOA | Channel A output | 4.0 A source/sink capable driver output referenced to GNDA |
| GNDA | Output A ground | Return path for VOA; may be isolated from GNDB or tied together |
| VOB | Channel B output | 4.0 A source/sink capable driver output referenced to GNDB |
| GNDB | Output B ground | Return path for VOB; supports split-ground or common-ground configurations |
| VDDA | Output A supply | Powers VOA driver stage; UVLO threshold = 8 V (rising) |
| VDDB | Output B supply | Powers VOB driver stage; UVLO threshold = 8 V (rising) |
| DISABLE | Global shutdown | Active-high input forcing both VOA and VOB low; no effect if VDDI < UVLO |
| NC | No connect | Pins 1, 9, 10, 16 - internally unused; must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated drivers | Enables fully decoupled high-side and low-side gate control without shared timing constraints |
| Silicon RF isolation barrier | Delivers 3.75 kVRMS withstand voltage and superior EMI immunity vs. optocouplers |
| 4.0 A peak output per channel | Drives large gate capacitances (e.g., 100 nC IGBTs) with minimal external components |
| AEC-Q100 qualified | Validated for automotive use with zero-defect manufacturing flow and PPAP support |
| TTL-compatible inputs with hysteresis | Ensures reliable logic-level interpretation in noisy power electronics environments |
| SOIC-16 narrow-body footprint | Reduces PCB area vs. wide-body alternatives while maintaining creepage/clearance for 3.75 kVRMS |
Applications
| Motor Control Systems | Solar Inverters |
|---|---|
Use Scenario: Driving high-voltage IGBT half-bridges in HVAC compressors and EV traction motors. IC Role / Device Role / Timing Role: Dual isolated gate driver providing independent, noise-immune control of upper and lower switches. Use Value: 45 ns propagation delay and 4.0 A drive strength enable precise PWM timing and fast turn-on/turn-off of 1200 V devices. | Use Scenario: Controlling DC-link MOSFETs in string-level solar microinverters operating at 600–1000 Vdc. IC Role / Device Role / Timing Role: Isolated dual driver delivering reinforced insulation and independent gate control for bidirectional power flow. Use Value: 3.75 kVRMS isolation rating satisfies IEC 62109 safety requirements for photovoltaic systems. |
| Onboard Chargers (OBC) | Battery Management Systems (BMS) |
Use Scenario: Gate driving SiC MOSFETs in bi-directional AC/DC and DC/DC stages of automotive OBC modules. IC Role / Device Role / Timing Role: Automotive-grade dual driver supporting high-frequency switching (>100 kHz) with thermal stability over –40°C to +125°C. Use Value: AEC-Q100 qualification and 8 V UVLO ensure robust operation during cold-cranking and load-dump transients. | Use Scenario: Isolating gate signals between MCU and high-side battery disconnect FETs in 400–800 V EV battery packs. IC Role / Device Role / Timing Role: Dual-channel isolator enabling safe, independent control of precharge and main contactor drivers. Use Value: Separate GNDA/GNDB pins allow galvanic separation between pack monitoring and switching domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8235BC-AS1 | Same 4.0 A dual-driver configuration, identical SOIC-16 narrow-body package, but rated for 3.75 kVRMS isolation and 8 V UVLO | Functionally identical; differs only in part-numbering convention (BC vs. BC-D-IS1 suffix) | Select SI8235BC-AS1 only if legacy BOM references that specific ordering code |
| UCC5390SCDR | Texas Instruments dual isolated driver with 4.5 A peak output, 5 kVRMS isolation, and integrated Miller clamp; requires external VDD biasing | Higher isolation rating and active Miller clamping support - suited for ultra-high-reliability SiC designs where shoot-through prevention is critical | Choose UCC5390SCDR when enhanced fault protection and 5 kVRMS compliance are mandatory |
Compared with SI8235BC-AS1 (identical function and package) and UCC5390SCDR (higher isolation + Miller clamp), SI8238BC-AS1R offers optimized cost-performance balance for AEC-Q100-compliant dual-drive needs in OBC and traction inverters without requiring auxiliary protection circuitry.
Availability
SI8238BC-AS1R is available at Aetrix Electronics and suitable for automotive onboard chargers, solar inverters, and industrial motor control systems requiring stable component supply, AEC-Q100 traceability, and long-term lifecycle support.
Supply support for SI8238BC-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 leader in analog and mixed-signal semiconductors, specializing in RF, isolation, timing, and power management ICs for high-performance wireless and power systems.
The Si823x family was designed specifically for isolated gate driving in automotive and industrial power conversion - emphasizing high-speed, high-current capability, reinforced insulation, and AEC-Q100 reliability from wafer to shipment.
FAQ
What is the isolation voltage rating of the SI8238BC-AS1R?
The SI8238BC-AS1R has a certified 3.75 kVRMS input-to-output isolation rating per UL1577, validated for one-minute withstand testing. This rating supports reinforced insulation in 400–800 Vdc bus applications such as EV onboard chargers and solar inverters, and is confirmed in Skyworks' Si823x datasheet revision 206326B.
Does the SI8238BC-AS1R include programmable dead time?
No, the SI8238BC-AS1R does not include programmable dead time or overlap protection. As a dual-driver variant (Si8235/8 family), it lacks the DT pin and internal logic found in high-side/low-side versions like SI8233/34. Dead time must be implemented externally in the controller or gate network.
What is the operating temperature range for the SI8238BC-AS1R?
The SI8238BC-AS1R operates from –40°C to +125°C ambient temperature, meeting AEC-Q100 Grade 1 requirements. This range is validated across all electrical parameters including propagation delay, output current, and UVLO thresholds, as specified in the official Skyworks Si823x datasheet.
How does the SI8238BC-AS1R differ from the SI8238BD-AS?
The SI8238BC-AS1R uses a SOIC-16 narrow-body package with 3.75 kVRMS isolation, while SI8238BD-AS uses a SOIC-16 wide-body package rated for 5.0 kVRMS. Both share identical dual-driver functionality, 4.0 A output, and AEC-Q100 qualification - the difference lies solely in package creepage/clearance and isolation level.
Is the SI8238BC-AS1R pin-compatible with other Si823x dual drivers?
Yes, the SI8238BC-AS1R is pin-compatible with all Si823x dual-driver variants in SOIC-16 narrow-body packages (e.g., SI8235BC-AS1, SI8237BC-AS1). Pin functions, spacing, and thermal pad layout match exactly - allowing direct substitution where isolation rating and UVLO voltage meet system requirements.
SI8238BC-AS1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si823x
- 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:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 20kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 45ns, 45ns
- Pulse Width Distortion (Max):
- 5.6ns
- Rise / Fall Time (Typ):
- 12ns, 12ns (Max)
- Current - Output High, Low:
- 2A, 4A
- Current - Peak Output:
- 4A
- Voltage - Forward (Vf) (Typ):
- -
- Current - DC Forward (If) (Max):
- -
- Voltage - Output Supply:
- 6.5V ~ 24V
- 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
SI8238BC-AS1R FAQ
1.How can I place an order for SI8238BC-AS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8238BC-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 SI8238BC-AS1R reliable?
The price and inventory of SI8238BC-AS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8238BC-AS1R is usually 5 days.
3.What payment methods are accepted for SI8238BC-AS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8238BC-AS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8238BC-AS1R?
SI8238BC-AS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8238BC-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 SI8238BC-AS1R?
For technical support, including SI8238BC-AS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8238BC-AS1R requirements.
6.How does Aetrix verify that SI8238BC-AS1R is sourced from the original manufacturer or authorized distributors?
All SI8238BC-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 SI8238BC-AS1R meets industry standards.
7.What is the process for return or replacement of SI8238BC-AS1R?
All SI8238BC-AS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8238BC-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 SI8238BC-AS1R part is unused and in its original packaging.
Return procedure for SI8238BC-AS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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