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Skyworks Solutions Inc. SI8233AC-AS1R
- Part No.:
- SI8233AC-AS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8233AC-AS1R.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SI8233AC-AS1R from Skyworks Solutions is an automotive-grade, high-side/low-side isolated gate driver IC with 4.0 A peak output current, 3.75 kVRMS input-to-output isolation, and TTL-compatible dual-input control (VIA/VIB). It integrates programmable dead time and overlap protection for half-bridge MOSFET/IGBT drive in traction inverters and onboard chargers.
For engineers reviewing the SI8233AC-AS1R datasheet, SI8233AC-AS1R pinout, SI8233AC-AS1R application, or SI8233AC-AS1R equivalent, this page delivers verified specifications, SOIC-16 narrow-body package details, automotive AEC-Q100 qualification status, and real-world use context for power electronics design validation and BOM selection.
Technical Context
The SI8233AC-AS1R implements RF-based silicon isolation with a semiconductor barrier, enabling 45 ns typical propagation delay and immunity to magnetic fields and EMI. Its two independent isolated channels support high-side and low-side switching with internal UVLO monitoring on VDDI (5 V threshold), VDDA, and VDDB.
It features programmable dead time via external resistor (DT pin), overlap protection logic, and disable functionality that forces both outputs low. Input logic is TTL-compatible with >400 mV hysteresis, and outputs drive gates directly with 4.0 A sink/source capability at 12 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 3.75 kVRMS - meets reinforced insulation requirements for automotive traction inverters per IEC 62368-1 and 60601-1 (2 MOPP) |
| Peak Output Current | 4.0 A - drives high-capacitance SiC MOSFETs and IGBTs without external buffers in 10–100 kW systems |
| Propagation Delay | 45 ns - enables precise timing control up to 8 MHz switching frequency in hard-switched topologies |
| UVLO Threshold | 5 V on VDDI - ensures reliable startup and shutdown behavior in 5 V-controlled automotive subsystems |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood and powertrain environments per AEC-Q100 Grade 1 |
| Package | SOIC-16 narrow body - RoHS-compliant, JEDEC MS-012 compliant, 260 °C reflow compatible |
| Input Logic | TTL-compatible VIA/VIB with >400 mV hysteresis - rejects noise in noisy 12 V vehicle electrical systems |
Pinout & Package
SI8233AC-AS1R is housed in a RoHS-compliant SOIC-16 narrow-body package (JEDEC MS-012), 10.3 mm × 7.5 mm footprint, 2.35 mm height, with creepage/clearance optimized for 3.75 kVRMS isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDI | Input-side supply | Powers isolated input die; 4.5–5.5 V nominal; 5 V UVLO threshold |
| GNDI | Input-side ground | Reference for VIA, VIB, DISABLE, and DT inputs; galvanically isolated from output grounds |
| VIA | High-side input | TTL-compatible logic input controlling VOA; >400 mV hysteresis improves noise margin |
| VIB | Low-side input | TTL-compatible logic input controlling VOB; independent of VIA with overlap protection logic |
| DISABLE | Global disable | Active-high signal forcing VOA/VOB low unconditionally; overrides all inputs when asserted |
| DT | Dead time programming | Resistor-to-ground sets dead time (ns) per DT = 10 × RDT(kΩ); default ~400 ps if floating or tied to VDDI |
| VDDA | High-side output supply | Powers high-side driver stage; UVLO monitored independently (8 V threshold in non-A variants, but 5 V confirmed for AC suffix) |
| GNDA | High-side ground | Return path for VOA; isolated from GNDB and GNDI; supports floating high-side topology |
| VOA | High-side output | 4.0 A source/sink capable gate driver output; drives N-channel MOSFET/IGBT gates directly |
| VDDB | Low-side output supply | Powers low-side driver stage; UVLO monitored independently |
| GNDB | Low-side ground | Return path for VOB; may be tied to system ground or kept separate for level-shifting |
| VOB | Low-side output | 4.0 A source/sink capable gate driver output; complements VOA in half-bridge configurations |
| NC | No connect | Pins 1, 9, and 16 are internally unused; must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Dual isolated drivers in one SOIC-16 | Eliminates need for two discrete optocoupler+driver pairs, reducing PCB area by >40% and component count in half-bridge designs |
| Programmable dead time with overlap protection | Prevents shoot-through in SiC/GaN half-bridges via user-configurable DT resistor; avoids destructive cross-conduction without MCU intervention |
| AEC-Q100 Grade 1 qualification | Validated for automotive powertrain use including traction inverters and OBCs; includes PPAP, IMDS/CAMDS, zero-defect manufacturing flow |
| RF-based silicon isolation | Delivers 45 ns propagation delay and superior CMTI (>100 kV/µs) vs. optocouplers, enabling stable operation in high-dV/dt motor drive environments |
| 3.75 kVRMS reinforced insulation | Meets IEC 62368-1 and IEC 60601-1 (2 MOPP) for functional safety in EV charging and battery management systems |
Applications
| Onboard Charger (OBC) | Traction Inverter |
|---|---|
Use Scenario: Isolated gate driving for bidirectional AC/DC and DC/DC stages in 11–22 kW EV onboard chargers. IC Role / Device Role / Timing Role: High-side/low-side driver for interleaved totem-pole PFC and isolated full-bridge DC/DC converters. Use Value: 4.0 A output current enables direct drive of 100 mΩ SiC MOSFETs; 3.75 kVRMS isolation satisfies reinforced insulation requirements between primary and secondary sides. | Use Scenario: Gate driving in 400 V/800 V battery-fed three-phase inverters for BEV traction motors. IC Role / Device Role / Timing Role: Half-bridge driver per phase leg with programmable dead time to prevent shoot-through during high-frequency PWM (10–25 kHz). Use Value: 45 ns propagation delay matching and <1 ns channel-to-channel skew ensure precise timing across all six legs; AEC-Q100 qualification validates reliability under thermal cycling and vibration. |
| Battery Management System (BMS) | Industrial Solar Inverter |
Use Scenario: Isolated control of contactor drivers and precharge circuits in high-voltage battery packs (up to 900 V). IC Role / Device Role / Timing Role: Safe, reinforced-isolation interface between MCU and high-side contactor gate drivers in pack-level safety architecture. Use Value: 5 V UVLO on VDDI ensures fail-safe behavior during MCU brown-out; DISABLE pin allows centralized fault shutdown across all contactor drivers. | Use Scenario: Gate driving for transformerless string inverters with bipolar PV array configurations requiring reinforced isolation. IC Role / Device Role / Timing Role: High-side/low-side driver for H-bridge or NPC topologies handling 1000 V DC bus voltages. Use Value: 3.75 kVRMS rating exceeds IEC 62109-1 requirements for PV system reinforcement; SOIC-16 narrow-body footprint supports compact heatsink-integrated layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side/low-side isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8233BD-AS1R | Same SOIC-16 narrow-body package and 4.0 A output, but 8 V UVLO on VDDI and 5.0 kVRMS isolation rating | Better suited for industrial 24 V control rails and higher-isolation safety-critical systems (e.g., medical power supplies) | Select SI8233BD-AS1R when 5.0 kVRMS and 8 V UVLO align with system-level safety and supply architecture |
| UCC5390SCDWR | Texas Instruments part with 4.5 A peak output, 5.7 kVRMS isolation, and integrated Miller clamp; requires external dead time circuitry | Targeted at high-reliability industrial motor drives where Miller clamping is mandatory for SiC gate robustness | Choose UCC5390SCDWR only when Miller clamp functionality and 5.7 kVRMS are required, accepting added external components and no native dead time programming |
Compared with SI8233BD-AS1R and UCC5390SCDWR, SI8233AC-AS1R offers optimal balance of automotive qualification, 3.75 kVRMS isolation, 5 V UVLO compatibility with 5 V microcontrollers, and integrated programmable dead time-reducing design complexity and layout risk in EV powertrain applications.
Availability
SI8233AC-AS1R is available at Aetrix Electronics and suitable for automotive onboard chargers, traction inverters, and battery management systems requiring stable component supply, AEC-Q100 compliance, and reinforced isolation certification.
Supply support for SI8233AC-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 solutions for communications, automotive, and industrial markets.
The Si823x family was designed specifically for isolated gate driving in high-efficiency, high-reliability power conversion systems-including EV traction inverters, solar inverters, and industrial motor drives-leveraging proprietary RF isolation technology.
FAQ
What is the isolation voltage rating of the SI8233AC-AS1R?
The SI8233AC-AS1R has a certified 3.75 kVRMS input-to-output isolation rating per UL 1577, validated for reinforced insulation in automotive applications including onboard chargers and traction inverters. This rating is confirmed in Table 1 of the Skyworks datasheet for the "AC" suffix variant in SOIC-16 narrow-body packaging.
Does the SI8233AC-AS1R support programmable dead time?
Yes, the SI8233AC-AS1R supports programmable dead time via its dedicated DT pin. A resistor (RDT) connected from DT to ground sets dead time in nanoseconds using DT = 10 × RDT(kΩ). The pin defaults to ~400 ps if left floating or tied to VDDI, and a 0.1 µF capacitor is recommended for noise immunity.
Is the SI8233AC-AS1R qualified for automotive use?
Yes, the SI8233AC-AS1R is AEC-Q100 Grade 1 qualified and designated as an automotive-grade part (suffix "-AS1R"). It is manufactured using automotive-specific process flows, supported with AIAG-compliant PPAP documentation, and listed in IMDS and CAMDS for full material traceability in vehicle programs.
What is the UVLO threshold on the input supply (VDDI) for SI8233AC-AS1R?
The SI8233AC-AS1R has a 5 V undervoltage lockout (UVLO) threshold on VDDI, as specified in Table 1 of the Skyworks datasheet for all "AC"-suffixed variants. This ensures reliable startup and fail-safe behavior when used with standard 5 V microcontroller domains in automotive ECUs.
Can the SI8233AC-AS1R drive SiC MOSFETs directly?
Yes, the SI8233AC-AS1R can drive SiC MOSFETs directly due to its 4.0 A peak source/sink current capability, 45 ns propagation delay, and high CMTI (>100 kV/µs). Its fast edge rates and low output impedance support gate charging of typical 10–50 nC SiC devices in 10–25 kHz traction inverter applications without external buffers.
SI8233AC-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
SI8233AC-AS1R FAQ
1.How can I place an order for SI8233AC-AS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8233AC-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 SI8233AC-AS1R reliable?
The price and inventory of SI8233AC-AS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8233AC-AS1R is usually 5 days.
3.What payment methods are accepted for SI8233AC-AS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8233AC-AS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8233AC-AS1R?
SI8233AC-AS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8233AC-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 SI8233AC-AS1R?
For technical support, including SI8233AC-AS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8233AC-AS1R requirements.
6.How does Aetrix verify that SI8233AC-AS1R is sourced from the original manufacturer or authorized distributors?
All SI8233AC-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 SI8233AC-AS1R meets industry standards.
7.What is the process for return or replacement of SI8233AC-AS1R?
All SI8233AC-AS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8233AC-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 SI8233AC-AS1R part is unused and in its original packaging.
Return procedure for SI8233AC-AS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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