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Skyworks Solutions Inc. SI8234BB-C-IMR
- Part No.:
- SI8234BB-C-IMR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 14-VFLGA
- Datasheet:
-
SI8234BB-C-IMR.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 14LGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,853
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Product details
Overview
SI8234BB-C-IMR from Silicon Laboratories is a 4.0 A peak-output, high-side/low-side isolated gate driver with 5 kVRMS input-to-output isolation, 60 ns max propagation delay, and PWM-input configuration, designed for IGBT/MOSFET drive in solar inverters and industrial motor control systems.
For engineers reviewing the SI8234BB-C-IMR datasheet, SI8234BB-C-IMR pinout, SI8234BB-C-IMR application, or SI8234BB-C-IMR equivalent, key selection criteria include its 4.0 A sink/source capability, programmable dead time, overlap protection, –40 to +125 °C operation, and SOIC-16 wide-body package with reinforced insulation per UL1577, VDE 0884-5, and IEC 60950-1.
Technical Context
The SI8234BB-C-IMR implements RF-based on/off keying across a silicon isolation barrier, enabling robust noise immunity without startup initialization. Its dual-channel architecture supports independent high-side and low-side gate drive with integrated overlap protection logic.
It features TTL-compatible PWM input with >400 mV hysteresis, programmable dead time via external resistor (70–900 ns range), and undervoltage lockout on both input (2.15–2.5 V) and output supplies (5/8/10/12.5 V thresholds). Common-mode transient immunity exceeds 45 kV/µs at 1500 VCM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4.0 A sink/source per channel - drives high-gate-charge IGBTs and SiC MOSFETs without external buffers. |
| Isolation Rating | 5 kVRMS (1 min, UL1577) - meets reinforced insulation requirements for 600 VRMS working voltage in industrial power systems. |
| Propagation Delay | ≤60 ns (max) - enables precise timing control up to 8 MHz switching frequency in high-efficiency converters. |
| Common-Mode Immunity | ≥45 kV/µs - maintains signal integrity in noisy motor drive and inverter environments with fast dv/dt transients. |
| Operating Temperature | –40 to +125 °C - supports under-hood automotive and industrial ambient conditions without derating. |
| Input Logic | PWM input with >400 mV hysteresis - rejects noise on single-wire control lines in EMI-prone applications. |
| Dead Time Range | 70–900 ns (programmable via RDT) - prevents shoot-through in half-bridge topologies while optimizing efficiency. |
Pinout & Package
SI8234BB-C-IMR is housed in a RoHS-compliant SOIC-16 wide-body package (10.3 mm × 10.3 mm, 2.65 mm height) with creepage/clearance ≥8.0 mm and reinforced insulation per IEC 60950-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Input-side ground and supply | Pins 1–8 form isolated input domain: GNDI (1), VDDI (2), PWM (3), DISABLE (4), NC (5–8). |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side power and drive outputs | Pins 9–16 form isolated output domain: GNDA (9), VDDA (10), VOA (11), GNDB (12), VDDB (13), VOB (14), NC (15–16). |
Key Features
| Feature | Design Value |
|---|---|
| RF-based silicon isolation | Eliminates LED aging and temperature drift of optocouplers; enables stable 5 kVRMS isolation over full temperature range. |
| Programmable dead time | Configurable 70–900 ns dead time via single external resistor - simplifies half-bridge timing tuning without firmware changes. |
| Overlap protection | Hardware-level logic blocks simultaneous high-side/low-side turn-on - prevents destructive shoot-through during fault or control error. |
| AEC-Q100 qualified | Validated for automotive-grade reliability (Grade 1, –40 to +125 °C), enabling use in traction inverters and onboard chargers. |
| High CMTI immunity | 45 kV/µs minimum common-mode rejection - ensures reliable operation in 1200 V SiC inverter stages with >50 V/ns dv/dt. |
Applications
| Solar Inverters | Industrial Motor Drives |
|---|---|
Use Scenario: Isolated gate drive for 3-phase IGBT/SiC half-bridges in string and central inverters operating at 10–20 kHz switching frequency. IC Role / Device Role / Timing Role: High-side/low-side driver with PWM input and hardware dead-time control, synchronizing gate signals across isolated domains. Use Value: 4.0 A peak current directly drives 1000 V/100 A IGBT modules; 60 ns propagation matching minimizes phase skew between legs. | Use Scenario: Gate driving in variable-frequency drives (VFDs) for HVAC compressors and industrial pumps requiring functional safety compliance. IC Role / Device Role / Timing Role: Reinforced-isolation driver enabling separation of controller (24 V logic) and power stage (600 V bus) with diagnostic-ready disable functionality. Use Value: UL/VDE-certified 5 kVRMS isolation satisfies IEC 61800-5-1 safety requirements; AEC-Q100 qualification supports long-lifecycle industrial deployments. |
| Uninterruptible Power Supplies | Plasma Display Drivers |
Use Scenario: Bidirectional half-bridge control in online UPS inverters with fast load-step response and zero-crossing synchronization. IC Role / Device Role / Timing Role: Dual-channel isolated driver delivering matched timing to high- and low-side switches during mode transitions (bypass/inverter/battery). Use Value: <1 ns pulse-width distortion ensures symmetrical dead time across channels; programmable DT adapts to different battery voltage levels. | Use Scenario: Row/column scanning in AC plasma display panels requiring high-voltage, high-speed switching of sustain electrodes. IC Role / Device Role / Timing Role: High-speed isolated gate driver enabling precise 200–500 ns pulse generation for plasma cell addressing. Use Value: 8 MHz max switching frequency and 12 ns typical rise/fall time support 100+ kHz sustain waveforms; 5 kVRMS isolation withstands 1.5 kV sustain pulses. |
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 |
|---|---|---|---|
| Si8233BB-C-IMR | Same 4.0 A output and SOIC-16 WB package, but uses dual independent inputs (VIA/VIB) instead of PWM input. | Requires separate high-side and low-side control signals; not suitable for single-PWM architectures like space-vector modulation. | Select when discrete HS/LS control is preferred over PWM-based timing; retains identical isolation, timing, and thermal specs. |
| ADuM4223BRIZ | 2.5 A peak output, 3.75 kVRMS isolation, 55 ns max propagation, and dual-input interface; no programmable dead time or overlap protection. | Lacks hardware shoot-through prevention and adjustable dead time - requires external logic or MCU coordination for safe half-bridge operation. | Choose for cost-sensitive designs where 2.5 A drive suffices and dead-time management is handled in software or external circuitry. |
Compared with Si8233BB-C-IMR, SI8234BB-C-IMR reduces control wiring by accepting a single PWM input, while ADuM4223BRIZ trades off integration for lower cost and smaller footprint but demands additional design effort to ensure shoot-through immunity.
Availability
SI8234BB-C-IMR is available at Aetrix Electronics and suitable for solar inverters, industrial motor drives, and uninterruptible power supplies requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.
Supply support for SI8234BB-C-IMR 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 Laboratories is a fabless semiconductor company specializing in timing, isolation, and mixed-signal ICs for industrial, automotive, and communications markets.
The Si823x family was engineered to replace optocoupler-based gate drivers with higher reliability, tighter timing control, and integrated safety features for high-voltage power conversion systems.
FAQ
What is the isolation voltage rating of the SI8234BB-C-IMR?
The SI8234BB-C-IMR is rated for 5 kVRMS input-to-output isolation per UL1577 (1 minute test), verified on the SOIC-16 wide-body package. This corresponds to 600 VRMS reinforced insulation working voltage per IEC 60950-1 and VDE 0884-5, making it suitable for industrial mains-connected equipment.
Does the SI8234BB-C-IMR support programmable dead time?
Yes, the SI8234BB-C-IMR supports hardware-programmable dead time via an external resistor (RDT) connected to the DT pin. The dead time is adjustable from 70 ns to 900 ns, enabling precise shoot-through prevention in half-bridge configurations without MCU intervention.
What is the maximum switching frequency supported by the SI8234BB-C-IMR?
The SI8234BB-C-IMR supports up to 8 MHz switching frequency, enabled by its ≤60 ns maximum propagation delay, ≤5.6 ns pulse-width distortion, and 12 ns typical rise/fall times (with 200 pF load). This makes it suitable for high-frequency resonant converters and SiC-based topologies.
How does the SI8234BB-C-IMR implement overlap protection?
The SI8234BB-C-IMR includes built-in hardware overlap protection that automatically forces both outputs low if high-side and low-side enable signals overlap in time. This prevents shoot-through in half-bridge circuits regardless of input timing errors or MCU faults.
Is the SI8234BB-C-IMR qualified for automotive applications?
Yes, the SI8234BB-C-IMR is AEC-Q100 qualified (Grade 1, –40 to +125 °C), with validated reliability for automotive power electronics including traction inverters, DC-DC converters, and onboard chargers - meeting stringent vibration, thermal cycling, and EMI requirements.
SI8234BB-C-IMR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 14-VFLGA
- 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):
- 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:
- 9.4V ~ 24V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-LGA (5x5)
- Approval Agency:
- CQC, CSA, UR, VDE
SI8234BB-C-IMR FAQ
1.How can I place an order for SI8234BB-C-IMR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8234BB-C-IMR 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 SI8234BB-C-IMR reliable?
The price and inventory of SI8234BB-C-IMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8234BB-C-IMR is usually 5 days.
3.What payment methods are accepted for SI8234BB-C-IMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8234BB-C-IMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8234BB-C-IMR?
SI8234BB-C-IMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8234BB-C-IMR 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 SI8234BB-C-IMR?
For technical support, including SI8234BB-C-IMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8234BB-C-IMR requirements.
6.How does Aetrix verify that SI8234BB-C-IMR is sourced from the original manufacturer or authorized distributors?
All SI8234BB-C-IMR 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 SI8234BB-C-IMR meets industry standards.
7.What is the process for return or replacement of SI8234BB-C-IMR?
All SI8234BB-C-IMR units undergo pre-shipment inspection (PSI). If there is an issue with SI8234BB-C-IMR, 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 SI8234BB-C-IMR part is unused and in its original packaging.
Return procedure for SI8234BB-C-IMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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