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Skyworks Solutions Inc. SI8232AB-B-IS1R
- Part No.:
- SI8232AB-B-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8232AB-B-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,108
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Product details
Overview
SI8232AB-B-IS1R from Silicon Labs is a dual-channel isolated gate driver IC with 0.5 A peak output current per channel, 5 kVRMS input-to-output isolation (wide-body SOIC-16), 60 ns max propagation delay, and TTL-compatible inputs with 400 mV hysteresis-designed for driving high-side and low-side MOSFETs/IGBTs in isolated half-bridge power stages.
For engineers reviewing the SI8232AB-B-IS1R datasheet, SI8232AB-B-IS1R pinout, SI8232AB-B-IS1R application, or SI8232AB-B-IS1R equivalent, this page delivers verified specifications, package mapping, functional context, real-world use cases, and validated alternative options for motor control, solar inverters, and isolated DC-DC converters.
Technical Context
The SI8232AB-B-IS1R implements two independent RF-modulated isolation channels using Silicon Labs' proprietary silicon-based barrier-enabling robust noise immunity (>45 kV/µs CMTI) without optical coupling or external transformers. Each channel features separate input (VIA/VIB) and output (VOA/VOB) supplies, with no internal dead-time logic or overlap protection-unlike HS/LS variants (e.g., Si8230/3).
It operates across –40 °C to +125 °C with VDDI = 2.7–5.5 V and VDDA/VDDB = 6.5–24 V, supporting up to 8 MHz switching frequency. Its dual-driver architecture allows independent control of two gate nodes referenced to separate grounds or floating potentials, enabling bidirectional bridge legs or isolated auxiliary drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS (1 min, UL 1577); validated for reinforced insulation per IEC 60950-1, IEC 60601-1, and VDE 0884-5 |
| Peak Output Current | 0.5 A sink/source per channel-sufficient to drive 1200 V/30 A IGBTs or 650 V/50 A MOSFETs with <20 ns rise/fall times |
| Propagation Delay | ≤60 ns (max), with ≤5.6 ns pulse-width distortion-enabling precise timing in high-frequency PWM systems |
| Common-Mode Transient Immunity | ≥45 kV/µs-ensures reliable operation in noisy industrial environments with fast-switching power devices |
| Operating Temperature | –40 °C to +125 °C ambient-qualified per AEC-Q100 Grade 1 for automotive under-hood applications |
| Input Hysteresis | 400 mV-rejects noise on TTL-level control signals without external Schmitt triggers |
| Supply Voltage Range | VDDI: 2.7–5.5 V; VDDA/VDDB: 6.5–24 V-supports direct connection to MCU I/O and standard gate-drive rails |
Pinout & Package
SI8232AB-B-IS1R is housed in a RoHS-compliant wide-body SOIC-16 package (WB SOIC-16), providing 8.0 mm creepage and clearance for 5 kVRMS isolation compliance. The package is surface-mount, thermally rated to 150 °C case temperature, and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Input-side terminals (GNDI, VDDI, VIA, VIB, DISABLE) | Form isolated input domain: GNDI is input ground reference; VDDI powers input logic; VIA/VIB accept independent TTL inputs; DISABLE forces both outputs low |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side terminals (GNDA, VDDA, VOA, GNDB, VDDB, VOB) | Form two isolated output domains: GNDA/VDDA/VOA drive Channel A; GNDB/VDDB/VOB drive Channel B-each with independent ground and supply |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolation channels | Enables fully decoupled control of two gate nodes-no shared timing constraints or cross-talk between channels |
| RF-based silicon isolation | Eliminates LED aging and temperature drift issues of optocouplers while achieving >45 kV/µs CMTI and 60 ns propagation |
| TTL-compatible inputs with hysteresis | Accepts direct MCU GPIO outputs without level-shifting or external noise filtering-reducing BOM count |
| Wide supply range (VDDA/VDDB = 6.5–24 V) | Supports 12 V and 15 V gate-drive rails used in industrial and automotive power stages without external regulators |
| AEC-Q100 qualified | Validated for automotive-grade reliability including temperature cycling, HTOL, and ESD-suitable for EV traction inverters and onboard chargers |
Applications
| Motor Control Systems | Isolated DC-DC Power Supplies |
|---|---|
Use Scenario: Driving high-side and low-side IGBTs in a 3-phase inverter for HVAC compressors or industrial servo drives. IC Role / Device Role / Timing Role: Dual-channel isolated gate driver providing independent, synchronized turn-on/turn-off control of upper and lower switches in each leg. Use Value: Enables precise dead-time management at system level while maintaining galvanic isolation between MCU and power stage-preventing shoot-through and ground-loop noise injection. | Use Scenario: Gate-driving synchronous rectifiers and primary-side MOSFETs in flyback or forward converters with primary-to-secondary isolation. IC Role / Device Role / Timing Role: Isolating control signals across transformer boundary while delivering 0.5 A peak current to charge/discharge gate capacitance rapidly. Use Value: Eliminates need for optocoupler + discrete driver combinations-reducing layout area, component count, and timing skew between channels. |
| Solar Inverters | Lighting Control Systems |
Use Scenario: Controlling half-bridge MOSFETs in string-level MPPT converters or microinverters interfacing PV panels to grid. IC Role / Device Role / Timing Role: Providing reinforced isolation and fast switching for bidirectional energy flow control in ungrounded PV systems. Use Value: Meets IEC 62109 and UL 1741 requirements for photovoltaic equipment via 5 kVRMS isolation and 125 °C operation-supporting outdoor deployment. | Use Scenario: Driving high-voltage MOSFETs in dimmable LED drivers for commercial lighting with SELV secondary side. IC Role / Device Role / Timing Role: Isolating PWM signals from microcontroller to secondary-side gate drivers while sustaining 60 ns timing accuracy. Use Value: Ensures flicker-free dimming performance by minimizing propagation delay mismatch (<5.6 ns PWD) between dual channels-critical for phase-cut and PWM dimming schemes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8232AD-B-IS1R | Same dual-driver topology and WB SOIC-16 package, but with 12.5 V UVLO threshold on VDDA/VDDB (vs. 10 V for SI8232AB-B-IS1R) | Preferred in systems where gate-drive rail undervoltage detection must trigger earlier to protect downstream FETs during brownout | Select when tighter VDDA/VDDB UVLO tolerance is required; otherwise functionally interchangeable |
| ADuM4223BRIZ | Analog Devices iCoupler-based dual isolator with 4 A peak output, 3.75 kVRMS rating, and integrated Miller clamp-requires external gate resistors | Better suited for high-current IGBTs requiring active Miller clamping; not drop-in due to different pinout and higher drive strength | Choose for higher drive capability and enhanced short-circuit protection; verify PCB layout compatibility |
Compared with SI8232AB-B-IS1R, Si8232AD-B-IS1R offers identical functionality with adjusted UVLO thresholds, while ADuM4223BRIZ provides higher peak current and integrated protection at the cost of reduced isolation voltage and non-pin-compatible layout.
Availability
SI8232AB-B-IS1R is available at Aetrix Electronics and suitable for motor control systems, solar inverters, and isolated DC-DC power supplies requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.
Supply support for SI8232AB-B-IS1R 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
Silicon Labs is a fabless semiconductor company specializing in precision timing, isolation, and mixed-signal ICs for industrial, automotive, and communications markets.
The Si823x product line was designed to replace optocoupler-based gate drivers with higher reliability, faster timing, and integrated safety certification-targeting high-efficiency power conversion and motor control applications.
FAQ
What is the isolation voltage rating of the SI8232AB-B-IS1R?
The SI8232AB-B-IS1R is rated for 5 kVRMS input-to-output isolation (1 minute, UL 1577), validated in the wide-body SOIC-16 package. This meets reinforced insulation requirements per IEC 60950-1, IEC 60601-1, and VDE 0884-5-making it suitable for medical, industrial, and grid-connected applications where safety-critical isolation is mandated. SI8232AB-B-IS1R achieves this via Silicon Labs' proprietary silicon-dielectric barrier.
Does the SI8232AB-B-IS1R include built-in dead-time control?
No, the SI8232AB-B-IS1R does not include programmable or fixed dead-time logic. As a dual-driver variant (per Table 9), it lacks overlap protection circuitry found in HS/LS versions like Si8230/3. Dead time must be implemented externally-either in the PWM controller or via gate-resistor networks. This design gives full timing flexibility but requires careful system-level coordination to prevent shoot-through in half-bridge configurations.
What are the supply voltage requirements for SI8232AB-B-IS1R?
The SI8232AB-B-IS1R requires three independent supplies: VDDI (2.7–5.5 V) for the input logic domain, and separate VDDA/GNDA and VDDB/GNDB (6.5–24 V each) for the two output driver domains. All supplies must be decoupled locally with low-ESR capacitors. VDDI UVLO thresholds are 3.6 V (rising) and 3.3 V (falling); VDDA/VDDB UVLO is set to 10 V nominal (9.6–12.2 V range).
Can SI8232AB-B-IS1R drive both N-channel and P-channel MOSFETs?
Yes, SI8232AB-B-IS1R can drive both N-channel and P-channel MOSFETs. Its outputs (VOA/VOB) are push-pull capable with 0.5 A sink/source strength and rail-to-rail swing (VOH ≈ VDDA–0.04 V, VOL ≈ 0.04 V). For high-side P-channel drivers, connect VDDA to source potential and VOA to gate; for N-channel, use bootstrapped or isolated supplies referenced to source. Output polarity is non-inverting relative to VIA/VIB inputs.
Is SI8232AB-B-IS1R qualified for automotive applications?
Yes, SI8232AB-B-IS1R is AEC-Q100 qualified (Grade 1, –40 °C to +125 °C ambient), with full qualification testing including HTOL, temperature cycling, and ESD per JESD22 standards. It is approved for use in automotive subsystems such as HVAC inverters, battery management system (BMS) contactor drivers, and 48 V mild-hybrid DC-DC converters-provided board-level thermal design maintains junction temperature ≤150 °C.
SI8232AB-B-IS1R 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:
- Obsolete
- 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-B-IS1R FAQ
1.How can I place an order for SI8232AB-B-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8232AB-B-IS1R 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-B-IS1R reliable?
The price and inventory of SI8232AB-B-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8232AB-B-IS1R is usually 5 days.
3.What payment methods are accepted for SI8232AB-B-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8232AB-B-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8232AB-B-IS1R?
SI8232AB-B-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8232AB-B-IS1R 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-B-IS1R?
For technical support, including SI8232AB-B-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8232AB-B-IS1R requirements.
6.How does Aetrix verify that SI8232AB-B-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8232AB-B-IS1R 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-B-IS1R meets industry standards.
7.What is the process for return or replacement of SI8232AB-B-IS1R?
All SI8232AB-B-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8232AB-B-IS1R, 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-B-IS1R part is unused and in its original packaging.
Return procedure for SI8232AB-B-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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