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Skyworks Solutions Inc. SI8232AB-D-IS1
- Part No.:
- SI8232AB-D-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8232AB-D-IS1.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,431
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Product details
Overview
SI8232AB-D-IS1 from Skyworks Solutions is a dual-channel isolated gate driver IC with 0.5 A peak output current per channel, 2.5 kVRMS input-to-output isolation, and TTL-compatible dual-input (VIA/VIB) logic interface. It operates from 4.5–24 V supply, features 45 ns propagation delay, and is used in half-bridge MOSFET/IGBT drive circuits for industrial inverters and motor control systems.
For engineers reviewing the SI8232AB-D-IS1 datasheet, SI8232AB-D-IS1 pinout, SI8232AB-D-IS1 application, or SI8232AB-D-IS1 equivalent, this page delivers verified specifications, SOIC-16 narrow-body package details, dual-driver functional context, UVLO threshold (5 V), and automotive-grade alternative options aligned with AEC-Q100 qualification requirements.
Technical Context
The SI8232AB-D-IS1 implements two independent RF-modulated isolation channels using Skyworks' proprietary silicon-based barrier, enabling simultaneous high-side and low-side gate drive without shared ground constraints. Each channel supports separate VDDA/VDDB supplies and exhibits <45 ns propagation delay with 400 mV input hysteresis.
Unlike HS/LS variants (e.g., SI8230), it lacks programmable dead time and overlap protection-its truth table confirms immediate output transitions on VIA/VIB changes. It supports operation across –40°C to +125°C and complies with UL 1577 (2.5 kVRMS), CSA 62368-1 (reinforced insulation), and VDE 60747-17 (basic insulation).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2.5 kVRMS per UL 1577 - enables safe operation in 600 V bus systems with reinforced insulation compliance |
| Peak Output Current | 0.5 A per channel - sufficient to drive 1200 V/30 A IGBTs or 650 V/40 A MOSFETs at ≤100 kHz switching |
| Propagation Delay | 45 ns max - ensures precise timing alignment between dual outputs in high-frequency half-bridge topologies |
| UVLO Threshold | 5 V (VDDI) - prevents erratic gate drive during brown-out conditions; hysteresis >400 mV improves noise immunity |
| Supply Voltage Range | 4.5–24 V (VDDI/VDDA/VDDB) - supports direct connection to 5 V logic rails and 12–15 V gate drive supplies |
| Input Logic Type | TTL-compatible dual inputs (VIA, VIB) - eliminates need for level-shifting when interfacing with microcontrollers or PWM controllers |
| Operating Temperature | –40°C to +125°C - qualified for industrial and automotive under-hood environments without derating |
Pinout & Package
SI8232AB-D-IS1 uses a RoHS-compliant SOIC-16 narrow-body package (5.3 mm width, 10.3 mm length, 2.35 mm height) 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 isolated input die; must be ≥4.5 V to exit UVLO and enable signal transmission |
| GNDI | Input-side ground reference | Reference for VIA/VIB inputs and internal oscillator; galvanically isolated from output grounds |
| VIA | Channel A input | TTL-compatible logic input controlling VOA; high-true, 400 mV hysteresis prevents false triggering |
| VIB | Channel B input | TTL-compatible logic input controlling VOB; independent of VIA, enabling asynchronous dual-drive operation |
| DISABLE | Global output disable | Active-high signal forcing both VOA and VOB low regardless of input states; no effect if VDDI < UVLO |
| VDDA | Output A power supply | Drives high-side or low-side gate; 4.5–24 V range supports 12 V gate bias for SiC MOSFETs |
| GNDA | Output A ground | Return path for VOA; may be tied to system ground or floating for high-side configuration |
| VOA | Channel A output | 0.5 A source/sink capable driver; connects directly to gate of Q1 in half-bridge or isolated DC-DC primary switch |
| VDDB | Output B power supply | Independent supply for VOB; allows different bias voltages per channel (e.g., 15 V for high-side, 12 V for low-side) |
| GNDB | Output B ground | Return path for VOB; electrically isolated from GNDA and GNDI to maintain channel separation |
| VOB | Channel B output | 0.5 A source/sink driver synchronized with VOA but not subject to dead-time insertion |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated drivers | Two fully isolated 0.5 A gate drivers in one SOIC-16 package - reduces PCB area vs. discrete optocoupler + driver solutions |
| Silicon-based RF isolation | 45 ns propagation delay and >100 kV/µs CMTI - outperforms optocouplers in noise immunity and timing precision |
| TTL-compatible inputs | 400 mV hysteresis on VIA/VIB - eliminates external Schmitt triggers and improves robustness against EMI in motor drives |
| Wide supply range | 4.5–24 V operation on all rails (VDDI/VDDA/VDDB) - supports direct integration with 5 V MCU logic and 12–15 V gate supplies |
| AEC-Q100 qualified | Automotive-grade variant SI8232AB-D-IS1A available - validated for onboard chargers and traction inverters per Grade 1 (–40°C to +125°C) |
Applications
| Industrial Inverters | Motor Control Systems |
|---|---|
|
Use Scenario: Driving complementary IGBTs in 3-phase solar inverters with 600–1200 V DC bus. IC Role / Device Role / Timing Role: Dual isolated gate driver providing independent, synchronized turn-on/turn-off control for high-side and low-side switches in each leg. Use Value: 45 ns propagation matching minimizes shoot-through risk; 2.5 kVRMS isolation meets IEC 61000-4-5 surge immunity requirements for outdoor PV installations. |
Use Scenario: Controlling BLDC motor phases in HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: Isolated dual driver enabling compact half-bridge gate drive with separate VDDA/VDDB biasing for optimal gate voltage swing. Use Value: 0.5 A peak current sustains 100 ns rise/fall times into 1 nF gate load; SOIC-16 narrow-body footprint fits tight thermal layouts. |
| Isolated DC-DC Converters | Onboard Chargers (OBC) |
|
Use Scenario: Driving primary-side MOSFETs in 1–3 kW isolated flyback or LLC resonant converters. IC Role / Device Role / Timing Role: Galvanically isolated dual driver delivering precise timing to synchronous rectifiers and primary switches across isolation boundary. Use Value: Independent GNDA/GNDB pins allow floating secondary-side gate drive; 24 V VDDA/VDDB support enables direct connection to auxiliary bias rails. |
Use Scenario: Gate driving SiC MOSFETs in bidirectional AC/DC OBC modules for BEVs. IC Role / Device Role / Timing Role: Dual-channel isolated driver supporting asymmetric gate drive (e.g., 18 V turn-on, 6 V turn-off) via separate VDDA/VDDB supplies. Use Value: AEC-Q100 qualified automotive variant available; 5 V UVLO ensures reliable startup during battery voltage sag (<10 V). |
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 |
|---|---|---|---|
| SI8232AD-D-IS1 | 5.0 kVRMS isolation rating; same 0.5 A output, dual-input, SOIC-16 narrow-body package | Required where reinforced insulation per UL 62368-1 or IEC 60601-1 is mandated (e.g., medical power supplies) | Select SI8232AD-D-IS1 when system-level safety certification demands higher isolation voltage than 2.5 kVRMS |
| UCC5390SCD | 0.8 A peak output, 3.75 kVRMS, single-channel with integrated Miller clamp; SOIC-8 package | Used in space-constrained designs needing higher drive strength per channel but no dual-channel synchronization | Choose UCC5390SCD only if board layout requires smaller footprint and higher per-channel current outweighs need for dual-channel independence |
Compared with SI8232AB-D-IS1, SI8232AD-D-IS1 offers double the isolation voltage for safety-critical systems, while UCC5390SCD trades dual-channel capability for higher single-channel drive and integrated protection-neither is pin-compatible, requiring PCB redesign.
Availability
SI8232AB-D-IS1 is available at Aetrix Electronics and suitable for industrial inverters, motor control systems, isolated dc-dc power supplies, and onboard chargers requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SI8232AB-D-IS1 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 drive in power conversion systems, emphasizing low propagation delay, high CMTI, and automotive-grade robustness across industrial and EV applications.
FAQ
What is the maximum switching frequency supported by SI8232AB-D-IS1?
The SI8232AB-D-IS1 supports up to 8 MHz switching frequency as specified in the Si823x family datasheet. This capability stems from its 45 ns propagation delay and fast 10–90% rise/fall times (<10 ns typical into 100 pF). At 100 kHz operation, the device delivers stable gate drive with minimal timing skew between VOA and VOB, making SI8232AB-D-IS1 suitable for high-efficiency resonant converters and servo motor drives.
Does SI8232AB-D-IS1 include built-in dead time or overlap protection?
No, SI8232AB-D-IS1 does not include programmable dead time or overlap protection. As a dual-driver (not HS/LS) variant, it follows the Si8232/7 truth table with immediate output transitions on VIA/VIB changes. Dead time must be implemented externally in the controller (e.g., MCU PWM peripheral or dedicated gate driver controller) before signals reach SI8232AB-D-IS1 inputs.
Can SI8232AB-D-IS1 drive both high-side and low-side MOSFETs in a half-bridge configuration?
Yes, SI8232AB-D-IS1 can drive both high-side and low-side MOSFETs in a half-bridge: VOA controls the high-side switch (with bootstrap or isolated supply) and VOB controls the low-side switch (ground-referenced). Its dual isolated outputs, independent VDDA/VDDB supplies, and 2.5 kVRMS isolation make SI8232AB-D-IS1 ideal for this topology without requiring additional level-shifters or optocouplers.
What is the UVLO behavior of SI8232AB-D-IS1 during power-up?
During power-up, SI8232AB-D-IS1 holds both VOA and VOB low until VDDI exceeds 5.0 V (UVLO+ threshold); outputs then follow VIA/VIB states after tSTART (~1 µs). If VDDI drops below 4.6 V (UVLO−), outputs revert to low. This behavior prevents partial gate drive and ensures clean startup in SI8232AB-D-IS1-based power stages.
Is SI8232AB-D-IS1 pin-compatible with other Si823x variants like SI8230AB-D-IS1?
No, SI8232AB-D-IS1 is not pin-compatible with SI8230AB-D-IS1. While both use SOIC-16 narrow-body packages, SI8230AB-D-IS1 is a high-side/low-side driver with DT, UVLO, and overlap protection pins-functions absent in SI8232AB-D-IS1. Pin assignments differ significantly; for example, SI8230AB-D-IS1 dedicates pins to DT and overlap recovery, whereas SI8232AB-D-IS1 repurposes those as NC or unused.
SI8232AB-D-IS1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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):
- 60ns, 60ns
- 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, UR, VDE
SI8232AB-D-IS1 FAQ
1.How can I place an order for SI8232AB-D-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8232AB-D-IS1 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 SI8232AB-D-IS1 reliable?
The price and inventory of SI8232AB-D-IS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8232AB-D-IS1 is usually 5 days.
3.What payment methods are accepted for SI8232AB-D-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8232AB-D-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8232AB-D-IS1?
SI8232AB-D-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8232AB-D-IS1 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 SI8232AB-D-IS1?
For technical support, including SI8232AB-D-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8232AB-D-IS1 requirements.
6.How does Aetrix verify that SI8232AB-D-IS1 is sourced from the original manufacturer or authorized distributors?
All SI8232AB-D-IS1 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 SI8232AB-D-IS1 meets industry standards.
7.What is the process for return or replacement of SI8232AB-D-IS1?
All SI8232AB-D-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8232AB-D-IS1, 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 SI8232AB-D-IS1 part is unused and in its original packaging.
Return procedure for SI8232AB-D-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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