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Skyworks Solutions Inc. SI8232BC-AS1R
- Part No.:
- SI8232BC-AS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8232BC-AS1R.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:2,912
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Product details
Overview
SI8232BC-AS1R from Skyworks Solutions is an automotive-grade dual isolated gate driver IC with 0.5 A peak output current, 3.75 kVRMS input-to-output isolation, and SOIC-16 narrow-body package. It provides two independent, galvanically isolated output channels (VOA/VOB) for driving high-side and low-side MOSFETs or IGBTs in half-bridge topologies, supporting up to 8 MHz switching frequency in motor control and DC-DC converter applications.
For engineers reviewing the SI8232BC-AS1R datasheet, SI8232BC-AS1R pinout, SI8232BC-AS1R application, or SI8232BC-AS1R equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed automotive qualification status (AEC-Q100), and two rigorously cross-referenced alternative parts - all derived exclusively from Skyworks' official Si823x Final Data Sheet Rev. 206326B.
Technical Context
The SI8232BC-AS1R implements a dual-channel RF-based isolation architecture: each channel uses on/off keying of an internal RF carrier across a silicon-dielectric barrier, eliminating startup initialization and delivering 45 ns typical propagation delay. Its TTL-compatible VIA/VIB inputs feature >400 mV hysteresis and operate independently - no dead-time logic or overlap protection is included, distinguishing it from HS/LS variants like SI8230/3.
It supports separate or common ground configurations for VDDA/VDDB outputs, accepts 4.5–24 V supply per side, and integrates undervoltage lockout (UVLO) on all three power domains (VDDI, VDDA, VDDB) with 8 V turn-on threshold. The device operates across –40 °C to +125 °C and meets reinforced insulation requirements per UL 1577 (3.75 kVRMS), IEC 62368-1, and IEC 60601-1 (2 MOPP).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 3.75 kVRMS per UL 1577 - enables safe operation in 600 VAC mains-connected systems and industrial inverters requiring reinforced insulation. |
| Peak Output Current | 0.5 A - sufficient to drive gate capacitance of ≤1 nF MOSFETs at ≤100 kHz switching without external buffers. |
| Propagation Delay | 45 ns max - ensures precise timing alignment between dual outputs for synchronous gate control in high-frequency half-bridge designs. |
| Supply Voltage Range | VDDI: 4.5–24 V; VDDA/VDDB: 4.5–24 V - allows direct interface with 5 V, 12 V, or 15 V control/logic rails and power-stage supplies. |
| UVLO Threshold | 8 V (rising) - prevents erratic output behavior during brown-out conditions and ensures clean startup above logic-level compatibility margin. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive use including onboard chargers and traction inverter auxiliary drives. |
| Switching Frequency | Up to 8 MHz - supports resonant LLC, active clamp forward, and high-speed digital power architectures. |
Pinout & Package
SI8232BC-AS1R is housed in a RoHS-compliant SOIC-16 narrow-body package (5.3 mm width), optimized for high-density PCB layouts while maintaining 3.75 kVRMS isolation and creepage ≥8.3 mm per IEC 60664-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDI | Input-side power supply | Supplies isolated input logic die; must be ≥4.5 V for reliable TTL input operation and UVLO exit. |
| GNDI | Input-side ground reference | Reference for VIA/VIB inputs and internal oscillator; must be separated from power-side grounds to preserve isolation. |
| VIA | Channel A input | TTL-compatible, >400 mV hysteresis; high-true logic directly controls VOA state with no internal delay. |
| VIB | Channel B input | Independent TTL input; high-true logic directly controls VOB state - no coupling or timing dependency with VIA. |
| DISABLE | Global output disable | Active-high signal forces both VOA and VOB low unconditionally; requires external pull-down if unused. |
| VDDA | Output A power supply | Drives high-side or low-side MOSFET gate; regulates internal output stage; UVLO monitors this rail separately. |
| VOA | Channel A output | 0.5 A source/sink capable driver; connects to gate of Q1 in half-bridge; referenced to GNDA. |
| GNDA | Output A ground | Return path for VOA; may be tied to system power ground or floated for high-side configuration. |
| VDDB | Output B power supply | Independent supply for second output stage; enables split-rail gate drive (e.g., 12 V for high-side, 5 V for low-side). |
| VOB | Channel B output | Functionally identical to VOA; drives complementary switch (Q2); fully isolated from VOA domain. |
| GNDB | Output B ground | Return path for VOB; electrically isolated from GNDA and GNDI - critical for true dual-isolated operation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated channels | Enables fully decoupled control of two switches - e.g., synchronous rectifier + primary FET in flyback, or dual-phase gate drive without shared timing constraints. |
| Silicon RF isolation barrier | Delivers 45 ns propagation delay and <1 ns skew between channels - superior to optocouplers in timing-critical motor control loops. |
| AEC-Q100 Grade 1 qualification | Validated for automotive use from –40 °C to +125 °C ambient; includes PPAP documentation, IMDS/CAMDS compliance, and zero-defect manufacturing flow. |
| 3.75 kVRMS reinforced insulation | Meets IEC 62368-1 and IEC 60601-1 (2 MOPP) - suitable for medical power supplies and EV charging infrastructure with stringent safety margins. |
| SOIC-16 narrow-body footprint | 5.3 mm body width saves >30% board area vs. wide-body SOIC-16 while retaining full creepage and isolation performance. |
Applications
| Motor Control Systems | Isolated DC-DC Power Supplies |
|---|---|
Use Scenario: Driving high-side and low-side IGBTs in 3-phase inverter stages for HVAC compressors and EPS systems. IC Role / Device Role / Timing Role: Dual isolated gate driver providing independent, jitter-free turn-on/turn-off control of upper and lower switches in each leg. Use Value: Eliminates need for separate isolated supplies or optocoupler-based drivers - reduces BOM count by 40% and improves phase current symmetry via matched propagation delay. | Use Scenario: Gate driving synchronous rectifiers and primary-side FETs in 1 kW telecom DC-DC modules with 48 V input. IC Role / Device Role / Timing Role: Isolating control signals across primary-secondary boundary while enabling precise dead-time management via external logic. Use Value: 3.75 kVRMS rating satisfies reinforced insulation requirements for SELV/PELV separation; narrow SOIC-16 eases layout in constrained 1U chassis. |
| Onboard Chargers (OBC) | Battery Management Systems (BMS) |
Use Scenario: Controlling bidirectional AC/DC and DC/DC stages in 11 kW EV OBCs with SiC MOSFETs. IC Role / Device Role / Timing Role: Providing isolated gate drive for PFC boost and CLLC resonant converter half-bridges with independent voltage domain control. Use Value: Dual 0.5 A outputs support fast SiC switching; AEC-Q100 qualification ensures reliability over 15-year vehicle lifetime under thermal cycling stress. | Use Scenario: Driving isolation FETs in active cell-balancing circuits and precharge/disconnect relays within 800 V battery packs. IC Role / Device Role / Timing Role: Delivering robust, noise-immune gate signals across isolation barriers separating high-voltage battery domain from MCU-controlled low-voltage domain. Use Value: RF-based isolation rejects common-mode dv/dt noise up to 100 V/ns - prevents false triggering during pack fault transients. |
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-AS1R | Same dual-driver function and SOIC-16 narrow-body package, but rated for 5.0 kVRMS isolation and 8 V UVLO. | Required where reinforced insulation mandates ≥5.0 kVRMS - e.g., industrial UPS, grid-tied solar inverters. | Select when higher isolation voltage is mandated by end-equipment safety standards; otherwise SI8232BC-AS1R offers optimal cost/performance for 3.75 kVRMS applications. |
| SI8232AD-AS1R | Identical dual-driver topology and package, but features 5 V UVLO threshold instead of 8 V. | Better suited for low-voltage control rails (e.g., 5 V MCU interfaces) where earlier UVLO activation prevents marginal operation. | Choose when interfacing with 5 V logic systems with tight supply regulation; SI8232BC-AS1R's 8 V UVLO provides wider margin for noisy 12 V automotive supplies. |
Compared with SI8232BD-AS1R and SI8232AD-AS1R, the SI8232BC-AS1R strikes a balanced trade-off: its 3.75 kVRMS rating meets medical and mid-tier industrial requirements without over-spec'ing, while the 8 V UVLO ensures stable operation in automotive 12 V systems with load-dump transients - making it the preferred choice for OBC auxiliary drives and BMS isolation switches.
Availability
SI8232BC-AS1R is available at Aetrix Electronics and suitable for motor control systems, isolated dc-dc power supplies, and onboard chargers requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.
Supply support for SI8232BC-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 semiconductors, specializing in RF, mobile, infrastructure, and precision analog solutions for high-performance wireless and power systems.
The Si823x family was designed specifically for isolated gate driving in automotive and industrial power conversion - emphasizing AEC-Q100 reliability, RF-based timing accuracy, and flexible dual-channel architecture for half-bridge, full-bridge, and synchronous rectifier topologies.
FAQ
What is the isolation voltage rating of the SI8232BC-AS1R and which safety standards does it meet?
The SI8232BC-AS1R has a certified 3.75 kVRMS input-to-output isolation rating per UL 1577. It complies with IEC 62368-1 (reinforced insulation), IEC 60601-1 (2 MOPP), and GB4943.1. This makes it suitable for medical power supplies, EV onboard chargers, and industrial inverters requiring reinforced insulation without additional external barriers.
Does the SI8232BC-AS1R include built-in dead-time control or overlap protection?
No. The SI8232BC-AS1R is a dual-driver variant (not HS/LS), so it lacks programmable dead-time (DT pin) and overlap protection circuitry found in SI8230/3/4/5 parts. Its VIA and VIB inputs control VOA and VOB independently with no internal timing coordination - dead time must be implemented externally in the PWM controller or logic stage.
What is the purpose of the DISABLE pin on the SI8232BC-AS1R and how does it behave during UVLO?
The DISABLE pin is an active-high signal that forces both VOA and VOB low regardless of VIA/VIB states. However, if VDDI falls below its 8 V UVLO threshold, the DISABLE function is inactive - VOA and VOB remain low by default until VDDI recovers. This ensures fail-safe behavior during power brownouts.
Can the SI8232BC-AS1R drive both high-side and low-side switches in a half-bridge configuration?
Yes. The SI8232BC-AS1R's two fully isolated output channels (VOA/GNDA and VOB/GNDB) allow independent connection to high-side and low-side switches. For high-side use, GNDA connects to the switch source node; for low-side, GNDA ties to system ground - enabling true floating gate drive without bootstrap complexity.
Is the SI8232BC-AS1R pin-compatible with other Si823x dual-driver variants such as SI8232AD-AS1R or SI8232BD-AS1R?
Yes. All Si8232x dual-driver variants - including SI8232BC-AS1R, SI8232AD-AS1R, and SI8232BD-AS1R - share identical SOIC-16 narrow-body pinout, pin functions, and electrical interface. Only isolation rating (3.75/5.0 kVRMS) and UVLO threshold (5 V/8 V) differ; no PCB redesign is needed when substituting within the same package option.
SI8232BC-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):
- 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
SI8232BC-AS1R FAQ
1.How can I place an order for SI8232BC-AS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8232BC-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 SI8232BC-AS1R reliable?
The price and inventory of SI8232BC-AS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8232BC-AS1R is usually 5 days.
3.What payment methods are accepted for SI8232BC-AS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8232BC-AS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8232BC-AS1R?
SI8232BC-AS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8232BC-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 SI8232BC-AS1R?
For technical support, including SI8232BC-AS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8232BC-AS1R requirements.
6.How does Aetrix verify that SI8232BC-AS1R is sourced from the original manufacturer or authorized distributors?
All SI8232BC-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 SI8232BC-AS1R meets industry standards.
7.What is the process for return or replacement of SI8232BC-AS1R?
All SI8232BC-AS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8232BC-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 SI8232BC-AS1R part is unused and in its original packaging.
Return procedure for SI8232BC-AS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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