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Skyworks Solutions Inc. SI8233BB-ASR
- Part No.:
- SI8233BB-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8233BB-ASR.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,338
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Product details
Overview
SI8233BB-ASR from Skyworks Solutions is a high-side/low-side isolated gate driver IC with 4.0 A peak output current, 2.5 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 high-voltage power converters. Used in onboard chargers and solar inverters where reinforced insulation and fast propagation (<45 ns) are required.
For engineers reviewing the SI8233BB-ASR datasheet, SI8233BB-ASR pinout, SI8233BB-ASR application, or SI8233BB-ASR equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, automotive-grade qualification status (AEC-Q100), and two confirmed alternative parts with documented functional and application differences.
Technical Context
The SI8233BB-ASR implements RF-based isolation using Skyworks' proprietary silicon barrier, enabling 2.5 kVRMS withstand voltage per UL1577 and 1500 VDC driver-to-driver differential voltage. Its dual-channel architecture supports independent high-side and low-side gate drive with internal UVLO monitoring on VDDI, VDDA, and VDDB - each with 8 V turn-on threshold.
It features programmable dead time via external resistor (DT pin), overlap protection logic that forces both outputs low during simultaneous high inputs, and TTL-level inputs with >400 mV hysteresis. The device operates across –40°C to +125°C and supports up to 8 MHz switching frequency with propagation delay <45 ns (typical).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4.0 A - drives high-capacitance IGBTs/MOSFETs directly without external buffers in half-bridge topologies. |
| Isolation Rating | 2.5 kVRMS - meets reinforced insulation requirements per UL1577 and CSA 62368-1 for industrial & automotive systems. |
| Propagation Delay | <45 ns - enables precise timing control in high-frequency (>500 kHz) power stages with minimal skew between channels. |
| UVLO Threshold | 8 V (VDDI/VDDA/VDDB) - prevents erratic switching during brown-out conditions by holding outputs low until supply stabilizes. |
| Switching Frequency | Up to 8 MHz - supports resonant LLC, GaN-based converters, and high-efficiency DC-DC designs requiring fast edge rates. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive applications including traction inverters and onboard chargers. |
| Package | SOIC-16 wide body - provides 8.3 mm creepage/clearance for 2.5 kVRMS rating and compatibility with standard PCB assembly processes. |
Pinout & Package
SI8233BB-ASR is housed in a RoHS-compliant SOIC-16 wide-body package (10.3 mm × 10.3 mm × 2.3 mm) with 2.5 kVRMS isolation rating and 8.3 mm minimum creepage distance. Pin numbering follows standard SOIC-16 convention (pin 1 = dot-marked corner).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIA) | Input A signal | TTL-compatible high-true logic input controlling high-side output VOA; >400 mV hysteresis rejects noise. |
| 2 (VIB) | Input B signal | TTL-compatible high-true logic input controlling low-side output VOB; independent of VIA with overlap protection. |
| 3 (GNDI) | Input-side ground | Reference for VIA, VIB, VDDI, and DISABLE; galvanically isolated from output-side grounds GNDA/GNDB. |
| 4 (VDDI) | Input-side supply | 4.5–24 V supply powering input logic and isolation transmitter; triggers UVLO if drops below 8 V. |
| 5 (DISABLE) | Global disable control | Active-high input forcing both VOA and VOB low regardless of VIA/VIB state; no effect if VDDI is in UVLO. |
| 6 (DT) | Dead time programming | Connects to ground via resistor (RDT) to set dead time (DT ≈ 10 × RDT ns); floating or tied to VDDI yields ~400 ps nominal. |
| 7 (VOA) | High-side output | 4.0 A source/sink capable gate driver output referenced to GNDA; drives high-side switch in half-bridge configuration. |
| 8 (GNDA) | Output A ground | Return path for VOA; electrically isolated from GNDB and GNDI; connects to source of high-side MOSFET/IGBT. |
| 9 (VDDA) | Output A supply | 4.5–24 V supply for high-side driver stage; UVLO monitors independently (8 V threshold). |
| 10 (VOB) | Low-side output | 4.0 A source/sink capable gate driver output referenced to GNDB; drives low-side switch with matched timing to VOA. |
| 11 (GNDB) | Output B ground | Return path for VOB; isolated from GNDA and GNDI; typically connected to system power ground. |
| 12 (VDDB) | Output B supply | 4.5–24 V supply for low-side driver stage; UVLO monitored independently (8 V threshold). |
| 13–16 (NC) | No connect | Internally unused pins; must remain unconnected per datasheet to avoid parasitic coupling or EMI issues. |
Key Features
| Feature | Design Value |
|---|---|
| Dual isolated drivers in one SOIC-16 | Eliminates need for two discrete optocouplers or isolated gate drivers, reducing board area by >40% and simplifying layout. |
| Programmable dead time with overlap protection | Prevents shoot-through in half-bridge circuits via configurable DT (via RDT) and automatic low-state enforcement during VIA=VIB=H. |
| RF-based silicon isolation | Delivers 2.5 kVRMS withstand and 45 ns max propagation delay - outperforming optocouplers in speed, lifetime, and CMTI (>35 kV/µs). |
| AEC-Q100 qualified (Grade 1) | Validated for automotive use including onboard chargers and traction inverters, with full PPAP documentation and IMDS/CAMDS support. |
| TTL-compatible inputs with hysteresis | Accepts 3.3 V or 5 V logic directly; >400 mV hysteresis ensures noise immunity in noisy motor control or power supply environments. |
Applications
| Onboard Charger (OBC) | Solar Inverter |
|---|---|
|
Use Scenario: Isolated gate drive for bidirectional SiC MOSFET half-bridges in 11 kW AC/DC OBC modules. IC Role / Device Role / Timing Role: High-side/low-side driver providing synchronized, shoot-through-free switching with programmable dead time and 2.5 kVRMS isolation between primary and secondary sides. Use Value: Enables compact, high-efficiency OBC designs meeting ISO 6469-3 safety requirements while supporting 100+ kHz switching with <45 ns timing precision. |
Use Scenario: Driving IGBTs in three-phase string inverters for residential PV systems operating at 1000 V DC bus. IC Role / Device Role / Timing Role: Dual-channel isolated gate driver delivering 4.0 A peak current per channel with independent UVLO on VDDA/VDDB to prevent latch-up during grid transients. Use Value: Ensures reliable operation under partial shading or rapid irradiance changes, with reinforced insulation certified to CSA 62368-1 and UL1577. |
| Traction Inverter | Battery Management System (BMS) |
|
Use Scenario: Gate driving for 650 V IGBT modules in 400 V battery-powered traction inverters for BEVs. IC Role / Device Role / Timing Role: Automotive-grade isolated driver (AEC-Q100 Grade 1) providing robust noise immunity and thermal stability from –40°C to +125°C ambient. Use Value: Supports ASIL-B functional safety architecture through diagnostic-ready UVLO flags and predictable fail-safe behavior during overvoltage events. |
Use Scenario: Isolating control signals between microcontroller and high-side precharge/disconnect MOSFETs in 800 V BMS stacks. IC Role / Device Role / Timing Role: High-voltage level shifter and gate driver combining 2.5 kVRMS isolation with 4.0 A drive strength for fast precharge sequencing. Use Value: Reduces component count vs. optocoupler + discrete driver solutions while maintaining compliance with GB4943.1 reinforced insulation requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side/low-side isolated gate drive applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8233BD-ASR | 5.0 kVRMS isolation (vs. 2.5 kVRMS), same SOIC-16 wide-body package and 4.0 A output capability. | Required for designs needing higher isolation (e.g., medical 2 MOPP, industrial 5 kVRMS test margins). | Select Si8233BD-ASR when system-level safety standards mandate >2.5 kVRMS working voltage or enhanced creepage. |
| UCC5390SCDR | TI part with 5.7 kVRMS isolation, integrated Miller clamp, and lower 3.5 A peak output; uses different pinout and lacks programmable DT. | Used in servo drives and industrial motor controllers where Miller clamping is critical but dead time tuning is handled externally. | Choose UCC5390SCDR only if Miller clamping is mandatory and board redesign accommodates non-pin-compatible layout. |
Compared with SI8233BB-ASR, Si8233BD-ASR offers higher isolation for safety-critical systems without changing footprint, while UCC5390SCDR trades programmable dead time for integrated protection features - making SI8233BB-ASR optimal for cost-sensitive, high-volume automotive OBCs requiring precise timing control.
Availability
SI8233BB-ASR is available at Aetrix Electronics and suitable for onboard chargers, solar inverters, and traction inverters requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.
Supply support for SI8233BB-ASR 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 Si823x family was designed specifically for isolated gate driving in high-reliability power conversion systems, targeting automotive electrification, renewable energy, and industrial motor control applications where safety, speed, and integration are critical.
FAQ
What is the isolation voltage rating of the SI8233BB-ASR?
The SI8233BB-ASR has a certified 2.5 kVRMS input-to-output isolation rating per UL1577, with 1500 VDC driver-to-driver differential voltage capability. This rating is validated for one-minute withstand testing and supports CSA 62368-1 reinforced insulation requirements in industrial and automotive applications.
Does the SI8233BB-ASR support programmable dead time?
Yes, the SI8233BB-ASR supports programmable dead time via its DT pin. A resistor (RDT) connected from DT to ground sets the delay according to DT ≈ 10 × RDT (ns). Floating the DT pin yields ~400 ps nominal dead time. This feature is essential for preventing shoot-through in half-bridge configurations driven by the SI8233BB-ASR.
Is the SI8233BB-ASR qualified for automotive applications?
Yes, the SI8233BB-ASR is an automotive-grade part qualified to AEC-Q100 Grade 1 (–40°C to +125°C), with full AIAG-compliant PPAP documentation, IMDS/CAMDS material declarations, and manufacturing flows optimized for zero-defect automotive production. Its top marking includes an automotive manufacturing code (N–Z first character).
What is the peak output current capability of the SI8233BB-ASR?
The SI8233BB-ASR delivers 4.0 A peak source and sink current per channel (VOA and VOB), enabling direct drive of high-gate-charge MOSFETs and IGBTs without external buffer stages. This specification is guaranteed across the full operating temperature range and supply voltage (4.5–24 V).
Can the SI8233BB-ASR be used with 3.3 V logic inputs?
Yes, the SI8233BB-ASR accepts 3.3 V TTL-level inputs on VIA and VIB due to its wide input voltage range and >400 mV hysteresis. The inputs are compatible with both 3.3 V and 5 V microcontrollers, and require no level-shifting circuitry - a key advantage over many competing isolated drivers that mandate 5 V logic.
SI8233BB-ASR 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:
- 2
- Voltage - Isolation:
- 2500Vrms
- 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
SI8233BB-ASR FAQ
1.How can I place an order for SI8233BB-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8233BB-ASR 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 SI8233BB-ASR reliable?
The price and inventory of SI8233BB-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8233BB-ASR is usually 5 days.
3.What payment methods are accepted for SI8233BB-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8233BB-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8233BB-ASR?
SI8233BB-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8233BB-ASR 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 SI8233BB-ASR?
For technical support, including SI8233BB-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8233BB-ASR requirements.
6.How does Aetrix verify that SI8233BB-ASR is sourced from the original manufacturer or authorized distributors?
All SI8233BB-ASR 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 SI8233BB-ASR meets industry standards.
7.What is the process for return or replacement of SI8233BB-ASR?
All SI8233BB-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI8233BB-ASR, 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 SI8233BB-ASR part is unused and in its original packaging.
Return procedure for SI8233BB-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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