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Skyworks Solutions Inc. SI8234BB-C-ISR
- Part No.:
- SI8234BB-C-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8234BB-C-ISR.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,277
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Product details
Overview
SI8234BB-C-ISR from Silicon Labs 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 programmable dead time-designed for IGBT/MOSFET half-bridge control in solar inverters and industrial motor drives.
For engineers reviewing the SI8234BB-C-ISR datasheet, SI8234BB-C-ISR pinout, SI8234BB-C-ISR application, or SI8234BB-C-ISR equivalent, this page delivers verified specifications, SOIC-16 wide-body package details, safety-certified isolation performance, and direct alternative part comparisons for high-reliability power stage design.
Technical Context
The SI8234BB-C-ISR implements RF-based on/off keying across a silicon isolation barrier, enabling robust noise immunity (>45 kV/µs CMTI) without optical degradation or startup initialization. Its dual-channel architecture supports independent PWM input control with overlap protection logic to prevent shoot-through in bridge configurations.
It features integrated undervoltage lockout (UVLO) on both input (VDDI) and output (VDDA/VDDB) supplies, with 12.5 V threshold variants and 1000 mV hysteresis. Programmable dead time is set via external resistor (RDT), supporting 70–900 ns range per Figure 42 of Rev. 1.5 datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4.0 A sink/source per channel - drives high-Q IGBT gates at up to 8 MHz switching frequency without external buffers. |
| Isolation Rating | 5 kVRMS (1 min, UL 1577) - certified for reinforced insulation in 600 VRMS working voltage systems (IEC 60950-1, VDE 0884-5). |
| Propagation Delay | ≤60 ns (max) - enables precise timing control in high-frequency half-bridge topologies with minimal skew between HS/LS channels. |
| Input Hysteresis | 400 mV - rejects noise on TTL-compatible inputs, ensuring stable edge detection under EMI stress. |
| Operating Temperature | –40 °C to +125 °C - supports industrial and automotive under-hood environments without derating. |
| Common-Mode Transient Immunity | ≥45 kV/µs - maintains signal integrity during fast dv/dt transients in SiC/GaN-based power stages. |
| Dead Time Range | 70–900 ns (programmable) - configurable via single external resistor to match gate driver timing requirements across load conditions. |
Pinout & Package
SI8234BB-C-ISR is housed in a RoHS-compliant SOIC-16 wide-body package (WBSOIC-16), providing 8.0 mm creepage/clearance and 5 kVRMS isolation rating. Pin assignments follow standard Si823x high-side/low-side layout with dedicated disable, PWM, VDDI, VDDA, VDDB, GNDA, GNDB, and output terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Input-side domain (VDDI, GNDI, PWM, DISABLE) | Electrically isolated input interface powered by 2.7–5.5 V supply; PWM input accepts TTL-level signals with 400 mV hysteresis. |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side domain (VDDA, VDDB, GNDA, GNDB, VOA, VOB) | Dual isolated output rails (6.5–24 V each) drive high-side and low-side gates independently; outputs tolerate ±1500 VDC differential voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Dead Time | 70–900 ns via single RDT resistor - eliminates need for external timing ICs or complex PCB routing in half-bridge designs. |
| Overlap Protection Logic | Hardware-enforced interlock prevents simultaneous HS/LS conduction - critical for preventing shoot-through in IGBT inverters. |
| RF-Based Isolation | Silicon dielectric barrier replaces optocouplers - no LED aging, 10× longer lifetime, and superior temperature stability vs. photocoupled drivers. |
| AEC-Q100 Qualified | Grade 1 (–40 °C to +125 °C) - validated for automotive traction inverter and onboard charger applications. |
| Thermal Derating Support | 100 °C/W θJA (WBSOIC-16) with defined safety-limiting current curves - enables reliable thermal modeling in enclosed enclosures. |
Applications
| Solar Inverters | Industrial Motor Drives |
|---|---|
Use Scenario: Half-bridge IGBT control in string inverters operating at 16–20 kHz switching frequency with >1000 V DC bus. IC Role / Device Role / Timing Role: High-side/low-side isolated gate driver enforcing dead time and overlap protection to prevent shoot-through during rapid dv/dt transitions. Use Value: 5 kVRMS isolation and ≥45 kV/µs CMTI ensure reliable operation under PV array ground-fault transients and lightning surge conditions. |
Use Scenario: Three-phase inverter driving PMSM motors in HVAC compressors and CNC spindles with field-oriented control. IC Role / Device Role / Timing Role: Dual-channel isolated driver delivering 4.0 A peak gate current to minimize switching losses in 1200 V IGBT modules. Use Value: 60 ns max propagation delay and <5.6 ns pulse-width distortion enable precise PWM timing alignment across all six bridge legs. |
| Isolated DC-DC Converters | Plasma Display Drivers |
Use Scenario: Active clamp forward or LLC resonant converter with synchronous rectification requiring isolated gate control on secondary side. IC Role / Device Role / Timing Role: Output-side isolated driver powered from auxiliary winding, referenced to floating secondary ground. Use Value: Independent VDDA/VDDB supplies allow separate biasing of HS/LS channels, enabling optimal gate voltage swing for Si MOSFETs or GaN HEMTs. |
Use Scenario: X/Y address driver in AC plasma display panels requiring high-voltage, high-speed switching of sustain electrodes. IC Role / Device Role / Timing Role: Fast-turning isolated driver controlling 200–300 V sustain pulses at 200–500 kHz repetition rates. Use Value: 8 MHz max switching frequency and 12 ns typical rise/fall time support high-resolution grayscale modulation without waveform distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side/low-side isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADuM4223BRIZ-RL | 2.5 kVRMS isolation (UL 1577), 4 A peak output, but fixed 35 ns dead time; requires external overlap logic. | Limited to lower working voltage systems (<300 VRMS); not certified for IEC 60601-1 medical reinforcement. | Preferred where cost sensitivity outweighs regulatory scope and programmable timing needs. |
| UCC21520CDWKR | 5 kVRMS isolation, 4 A output, but uses capacitive isolation and lacks integrated dead time programming; relies on controller-side dead time. | Requires external dead time generation and higher gate drive loop inductance management due to non-integrated overlap protection. | Selected when TI ecosystem integration (e.g., C2000 MCU) and dual-input flexibility outweigh hardware interlock benefits. |
Compared with ADuM4223BRIZ-RL and UCC21520CDWKR, the SI8234BB-C-ISR uniquely integrates programmable dead time and hardware overlap protection within a 5 kVRMS-certified SOIC-16 package-reducing BOM count, eliminating timing uncertainty, and simplifying compliance for industrial and renewable energy systems.
Availability
SI8234BB-C-ISR is available at Aetrix Electronics and suitable for solar inverters, industrial motor drives, and isolated dc-dc power supplies requiring stable component supply, long-term lifecycle assurance, and full traceability.
Supply support for SI8234BB-C-ISR 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 infrastructure.
The Si823x family was engineered to replace optocoupled gate drivers with robust, high-speed, and safety-certified digital isolation-targeting high-reliability power conversion in harsh electromagnetic environments.
FAQ
What is the isolation voltage rating of the SI8234BB-C-ISR?
The SI8234BB-C-ISR is rated for 5 kVRMS input-to-output isolation per UL 1577 (1 minute test), with production-tested 6.0 kVRMS withstand capability. This rating applies specifically to the SOIC-16 wide-body package variant and is certified for reinforced insulation under IEC 60950-1, VDE 0884-5, and CSA Component Notice 5A.
Does the SI8234BB-C-ISR support independent high-side and low-side control?
Yes, the SI8234BB-C-ISR supports independent high-side and low-side gate drive via its dedicated PWM input architecture. It does not require separate logic inputs for HS/LS-instead, a single PWM signal controls both outputs with built-in programmable dead time and overlap protection to prevent shoot-through.
What is the maximum switching frequency supported by the SI8234BB-C-ISR?
The SI8234BB-C-ISR 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 output rise/fall times (CL = 200 pF). This makes it suitable for high-frequency GaN and SiC half-bridge topologies.
How is dead time programmed on the SI8234BB-C-ISR?
Dead time on the SI8234BB-C-ISR is programmed using an external resistor (RDT) connected between the DT pin and VDDI. Values from 6 kΩ to 220 kΩ yield dead times from 70 ns to 900 ns, as specified in Figure 42 of the Rev. 1.5 datasheet. No additional components or configuration registers are required.
Is the SI8234BB-C-ISR qualified for automotive applications?
Yes, the SI8234BB-C-ISR is AEC-Q100 qualified (Grade 1, –40 °C to +125 °C) and certified for reinforced insulation in automotive systems including on-board chargers and traction inverters. Its 5 kVRMS isolation and ≥45 kV/µs CMTI meet stringent EMC requirements for EV power electronics.
SI8234BB-C-ISR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm 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):
- 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:
- 16-SOIC
- Approval Agency:
- CQC, CSA, UR, VDE
SI8234BB-C-ISR FAQ
1.How can I place an order for SI8234BB-C-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8234BB-C-ISR 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-ISR reliable?
The price and inventory of SI8234BB-C-ISR 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-ISR is usually 5 days.
3.What payment methods are accepted for SI8234BB-C-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8234BB-C-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8234BB-C-ISR?
SI8234BB-C-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8234BB-C-ISR 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-ISR?
For technical support, including SI8234BB-C-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8234BB-C-ISR requirements.
6.How does Aetrix verify that SI8234BB-C-ISR is sourced from the original manufacturer or authorized distributors?
All SI8234BB-C-ISR 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-ISR meets industry standards.
7.What is the process for return or replacement of SI8234BB-C-ISR?
All SI8234BB-C-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8234BB-C-ISR, 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-ISR part is unused and in its original packaging.
Return procedure for SI8234BB-C-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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