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Skyworks Solutions Inc. SI8232BB-AS1R
- Part No.:
- SI8232BB-AS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8232BB-AS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,120
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Product details
Overview
SI8232BB-AS1R from Skyworks Solutions is a dual-channel isolated gate driver IC with 2.5 kVRMS input-to-output isolation, 0.5 A peak output current per channel, TTL-compatible dual-input control (VIA/VIB), and SOIC-16 narrow-body packaging. It operates up to 24 V supply voltage with 8 V undervoltage lockout (UVLO) threshold and supports high-speed switching up to 8 MHz in motor control and isolated DC-DC power supplies.
For engineers reviewing the SI8232BB-AS1R datasheet, SI8232BB-AS1R pinout, SI8232BB-AS1R application, or SI8232BB-AS1R equivalent, this page delivers verified technical context, real-world design meaning for 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 SI8232BB-AS1R implements two independent RF-modulated isolation channels using Skyworks' proprietary silicon isolation barrier-no optocoupler or transformer required. Each channel features TTL-level inputs with >400 mV hysteresis and drives MOSFET/IGBT gates directly without external level-shifting circuitry.
Unlike high-side/low-side variants (e.g., SI8230/3), the SI8232BB-AS1R lacks programmable dead time and overlap protection; its dual-driver architecture enables fully independent channel control with immediate output transitions (no internal dead time), as confirmed in Table 5 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2.5 kVRMS per UL1577 - enables safe operation across reinforced insulation barriers in 400 VAC industrial systems |
| Peak Output Current | 0.5 A per channel - sufficient to drive 1200 V SiC MOSFETs with <10 nC gate charge at ≤100 kHz switching |
| Propagation Delay | ≤45 ns - ensures precise timing alignment between dual gate signals in half-bridge topologies |
| Supply Voltage Range | 4.5–24 V on VDDI/VDDA/VDDB - supports direct connection to 5 V logic and 12–24 V gate drive rails |
| UVLO Threshold | 8 V (rising), 7.5 V (falling) - prevents erratic gate switching during brown-out conditions in automotive onboard chargers |
| Switching Frequency | Up to 8 MHz - supports resonant LLC and GaN-based high-frequency DC-DC converters |
| AEC-Q100 Grade | Qualified for automotive applications - meets stress test requirements for temperature cycling, HTOL, and ESD (HBM ±2 kV) |
Pinout & Package
SI8232BB-AS1R uses a RoHS-compliant SOIC-16 narrow-body package (5.3 mm width, 10.3 mm length) with creepage ≥5.5 mm and clearance ≥5.0 mm per IEC 60664-1 for 2.5 kVRMS working voltage.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDI | Input-side power supply | Supplies 4.5–24 V to isolation transmitter; powers VIA/VIB logic interface and internal oscillator |
| GNDI | Input-side ground reference | Return path for VDDI and digital inputs; must be separated from output-side grounds for isolation integrity |
| VIA | Channel A input | TTL-compatible (0.8 V/2.0 V thresholds), >400 mV hysteresis - rejects noise in noisy motor control environments |
| VIB | Channel B input | Independent logic input identical to VIA; no cross-talk or timing dependency between channels |
| DISABLE | Global output disable | Active-high signal forcing both VOA and VOB low within tSD ≤ 100 ns - critical for fault shutdown in traction inverters |
| VDDA | Output A power supply | Drives high-side MOSFET gate; supports bootstrap or isolated supply configurations up to 24 V |
| VOA | Channel A output | 0.5 A source/sink capable; rail-to-rail swing from VDDA to GNDA - eliminates need for external gate resistors in most cases |
| GNDA | Output A ground | Reference for VOA; electrically isolated from GNDI and GNDB - enables floating high-side gate drive |
| VDDB | Output B power supply | Independent from VDDA; allows asymmetric gate drive voltages (e.g., +15 V/-5 V) for enhanced IGBT control |
| VOB | Channel B output | Functionally identical to VOA; supports independent switching for dual half-bridge or synchronous rectifier control |
| GNDB | Output B ground | Reference for VOB; isolated from GNDA and GNDI - enables dual isolated outputs in multi-phase inverters |
| NC | No-connect | Pins 1, 9, and 16 are internally unused; must remain unconnected to avoid parasitic coupling or thermal stress |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated drivers | Enables separate control of high-side and low-side switches in dual half-bridge or two-phase motor drives without shared timing constraints |
| Silicon-based RF isolation | Eliminates LED aging and CTR degradation of optocouplers; maintains 45 ns propagation delay stability over 15-year automotive lifetime |
| Automotive-grade qualification | AEC-Q100 Rev H compliant with PPAP documentation support - satisfies Tier-1 OEM requirements for onboard chargers and battery management systems |
| TTL-compatible inputs with hysteresis | Robust against EMI-induced glitches in 12 V automotive harnesses; operates reliably with microcontroller GPIOs without Schmitt triggers |
| SOIC-16 narrow-body footprint | Reduces PCB area by 30% vs. wide-body SOIC-16 while maintaining 2.5 kVRMS isolation - ideal for space-constrained EV charging modules |
Applications
| Motor Control Systems | Isolated DC-DC Power Supplies |
|---|---|
Use Scenario: Driving dual N-channel MOSFETs in a 3-phase BLDC inverter for electric power steering (EPS). IC Role / Device Role / Timing Role: Dual isolated gate driver providing independent, synchronized turn-on/turn-off of high-side and low-side FETs per phase leg. Use Value: 45 ns propagation matching minimizes shoot-through risk; 0.5 A output sustains 20 ns rise times into 1000 pF gate loads at 100 kHz PWM. | Use Scenario: Gate driving primary-side MOSFETs in a 1 kW isolated flyback converter for server PSUs. IC Role / Device Role / Timing Role: Isolating control signals from primary-side 400 V bus while delivering clean gate drive to Si MOSFETs. Use Value: 2.5 kVRMS isolation withstands transient surges per IEC 61000-4-5 Level 4; SOIC-16 narrow body fits tight transformer layout. |
| Solar Inverters | Onboard Chargers (OBC) |
Use Scenario: Controlling H-bridge IGBTs in string-level MPPT converters for residential solar arrays. IC Role / Device Role / Timing Role: Dual-channel driver enabling bidirectional energy flow control with independent gate timing. Use Value: AEC-Q100 qualification ensures reliability under desert thermal cycling (-40°C to +125°C ambient); 8 V UVLO prevents misfiring during PV voltage dips. | Use Scenario: Driving SiC MOSFET half-bridges in 11 kW AC/DC OBC modules for BEVs. IC Role / Device Role / Timing Role: Providing isolated gate drive to high-frequency SiC switches with minimal timing skew. Use Value: 8 MHz max frequency supports ZVS operation at 250 kHz; DISABLE pin enables fast fault response (<100 ns) during overcurrent events. |
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 |
|---|---|---|---|
| Si8232BD-AS | Same dual-driver function but 5.0 kVRMS isolation rating and SOIC-16 wide-body package | Required for designs needing reinforced insulation per IEC 62368-1 in medical or industrial mains-connected equipment | Select when creepage/clearance >8.0 mm and 5 kVRMS test compliance are mandatory; board layout must accommodate wider SOIC footprint |
| ADUM4223ARWZ | 2.5 kVRMS dual isolator with 4 A peak output, integrated Miller clamp, and 3.3/5 V logic compatibility | Better suited for high-power IGBTs requiring active Miller clamping and higher drive strength | Choose when driving >100 A IGBTs or needing built-in desaturation detection interface; requires different biasing and layout due to different pinout |
Compared with SI8232BD-AS, SI8232BB-AS1R offers smaller PCB area and lower cost for 2.5 kVRMS applications, while ADUM4223ARWZ provides higher drive capability and protection features at the expense of increased complexity and price.
Availability
SI8232BB-AS1R is available at Aetrix Electronics and suitable for motor control systems, isolated dc-dc power supplies, solar inverters, and onboard chargers requiring stable component supply across automotive and industrial production programs.
Supply support for SI8232BB-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, timing, and isolation technologies.
The Si823x family was designed specifically for high-reliability isolated gate driving in automotive electrification and industrial power conversion, emphasizing robustness, low propagation skew, and AEC-Q100 compliance from wafer fabrication through final test.
FAQ
What is the maximum operating temperature range for SI8232BB-AS1R?
The SI8232BB-AS1R is rated for operation 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 - critical for under-hood automotive applications like onboard chargers where thermal management is constrained.
Does SI8232BB-AS1R support programmable dead time?
No, SI8232BB-AS1R does not support programmable dead time or overlap protection. As a dual-driver variant (not high-side/low-side), it lacks the DT pin and internal logic for inter-channel timing control. Its truth table (Table 5) confirms immediate, independent output transitions - making it suitable for applications requiring asynchronous channel control, such as dual half-bridge or synchronous rectifier topologies.
Can SI8232BB-AS1R drive SiC MOSFETs effectively?
Yes, SI8232BB-AS1R can drive discrete SiC MOSFETs with gate charges ≤10 nC at switching frequencies up to 250 kHz. Its 0.5 A peak output current, 45 ns propagation delay, and rail-to-rail VOA/VOB swing enable clean turn-on/turn-off with minimal ringing. For higher gate charge devices (>15 nC) or >500 kHz operation, consider the 4 A variants like SI8235BB-AS1R.
What safety certifications apply to SI8232BB-AS1R?
SI8232BB-AS1R carries UL 1577 recognition (2.5 kVRMS for 1 minute), CSA certification to IEC 62368-1 (reinforced insulation), and VDE 60747-17 (basic insulation). These approvals are documented in Skyworks' official certification reports and confirm suitability for industrial and automotive end-equipment requiring certified isolation barriers.
Is SI8232BB-AS1R pin-compatible with other Si823x variants?
SI8232BB-AS1R shares the same SOIC-16 narrow-body pinout with all Si823x "BB" and "AB" variants (e.g., SI8230BB-AS1, SI8235BB-AS1R), but is not pin-compatible with wide-body ("BD") or LGA packages. Functionally, it differs from HS/LS variants (e.g., SI8230) by omitting DT and overlap logic pins - requiring schematic review before substitution.
SI8232BB-AS1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- 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):
- 20kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 45ns, 45ns
- Pulse Width Distortion (Max):
- 5.6ns
- Rise / Fall Time (Typ):
- 20ns, 20ns (Max)
- Current - Output High, Low:
- 250mA, 500mA
- Current - Peak Output:
- 500mA
- 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
SI8232BB-AS1R FAQ
1.How can I place an order for SI8232BB-AS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8232BB-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 SI8232BB-AS1R reliable?
The price and inventory of SI8232BB-AS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8232BB-AS1R is usually 5 days.
3.What payment methods are accepted for SI8232BB-AS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8232BB-AS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8232BB-AS1R?
SI8232BB-AS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8232BB-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 SI8232BB-AS1R?
For technical support, including SI8232BB-AS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8232BB-AS1R requirements.
6.How does Aetrix verify that SI8232BB-AS1R is sourced from the original manufacturer or authorized distributors?
All SI8232BB-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 SI8232BB-AS1R meets industry standards.
7.What is the process for return or replacement of SI8232BB-AS1R?
All SI8232BB-AS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8232BB-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 SI8232BB-AS1R part is unused and in its original packaging.
Return procedure for SI8232BB-AS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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