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Skyworks Solutions Inc. SI8234AB-C-ISR
- Part No.:
- SI8234AB-C-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8234AB-C-ISR.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,227
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Product details
Overview
SI8234AB-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 switching in solar inverters and industrial motor drives.
For engineers reviewing the SI8234AB-C-ISR datasheet, SI8234AB-C-ISR pinout, SI8234AB-C-ISR application, or SI8234AB-C-ISR equivalent, this page delivers verified specifications, safety-certified isolation architecture, PWM-input logic behavior, thermal derating data, and direct alternatives for high-reliability power stage design.
Technical Context
The SI8234AB-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. It features independent input-side (VDDI) and dual driver-side (VDDA/VDDB) supplies, each with undervoltage lockout (UVLO) thresholds configurable per variant.
As a PWM-input HS/LS driver, it accepts a single logic-level PWM signal to control complementary outputs with overlap protection and externally programmable dead time via resistor (RDT = 6–220 kΩ), supporting up to 8 MHz switching frequency while maintaining <5.6 ns pulse width distortion.
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 directly without external buffers. |
| Isolation Rating | 5 kVRMS (UL1577) - certified reinforced insulation for 600 VRMS working voltage in industrial and solar applications. |
| Propagation Delay | ≤60 ns (max) - enables precise timing control in high-frequency half-bridge topologies with minimal shoot-through risk. |
| Common-Mode Transient Immunity | ≥45 kV/µs - maintains signal integrity during fast dV/dt events in noisy power-conversion environments. |
| Operating Temperature | –40 °C to +125 °C - supports full automotive-grade thermal range without derating in enclosed motor drives. |
| Input Logic | PWM-compatible TTL inputs with >400 mV hysteresis - rejects noise on single-wire control lines in EMI-heavy systems. |
| Dead Time Control | Programmable via external resistor (70–900 ns range) - allows fine-tuned optimization of bridge timing without firmware changes. |
Pinout & Package
SI8234AB-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. The package supports surface-mount assembly and thermal performance up to 100 °C/W junction-to-air.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Input-side terminals (GNDI, VDDI, PWM, DISABLE) | Isolated input domain: powers logic interface and receives PWM command; DISABLE forces both outputs low. |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side terminals (GNDA, VDDA, VOA, GNDB, VDDB, VOB) | Dual isolated output domains: VOA drives high-side switch referenced to GNDA; VOB drives low-side switch referenced to GNDB. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based silicon isolation | Eliminates LED aging and temperature drift; achieves 5 kVRMS isolation with 1.4 pF input-output capacitance for minimal coupling noise. |
| Programmable dead time | Adjustable 70–900 ns via single external resistor - replaces complex digital timing circuits in cost-sensitive inverters. |
| Overlap protection | Hardware-enforced blanking prevents simultaneous HS/LS conduction even during input glitches or UVLO transitions. |
| AEC-Q100 qualified | Validated for automotive-grade reliability (Grade 1) - suitable for traction inverters and onboard chargers requiring long-term stability. |
| Thermal derating support | Defined safety-limiting current curves up to 150 °C case temperature - enables accurate lifetime modeling in sealed enclosures. |
Applications
| Solar Inverter Half-Bridge | Industrial Motor Drive |
|---|---|
Use Scenario: Isolated gate driving for 600–1200 V IGBTs in string inverters with rapid MPPT transients and grid fault recovery. IC Role / Device Role / Timing Role: High-side/low-side gate driver with PWM input and hardware dead-time enforcement to prevent shoot-through during dynamic load steps. Use Value: 4.0 A peak drive current ensures fast turn-on of high-Ciss devices; 45 kV/µs CMTI sustains operation during lightning-induced surges on DC bus. | Use Scenario: Driving three-phase inverter legs in HVAC compressors and servo amplifiers operating at ambient temperatures up to 105 °C. IC Role / Device Role / Timing Role: Isolated HS/LS driver delivering precise edge alignment between complementary outputs under variable load and temperature. Use Value: 60 ns max propagation delay and <5.6 ns PWD enable <100 ns timing margins at 20 kHz PWM; –40 to +125 °C rating avoids thermal shutdown. |
| Plasma Display Power Supply | Isolated DC-DC Converter |
Use Scenario: Driving resonant half-bridge switches in high-voltage sustain power supplies for large-format plasma displays. IC Role / Device Role / Timing Role: PWM-controlled isolated gate driver managing ZVS transitions with tight dead-time control to minimize switching losses. Use Value: Programmable dead time (70–900 ns) allows optimization for varying resonant tank Q-factor; 5 kVRMS isolation meets IEC 60950-1 reinforced insulation requirements. | Use Scenario: Gate driving synchronous rectifiers and primary-side switches in isolated flyback and forward converters for medical equipment. IC Role / Device Role / Timing Role: Dual isolated driver providing independent control of primary and secondary side switches with galvanic separation. Use Value: Dual output-side grounds (GNDA/GNDB) enable floating secondary-side gate drive; UL1577 and VDE 0884-5 certification satisfies safety standards for patient-connected devices. |
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 |
|---|---|---|---|
| Si8233AB-C-ISR | Same 4.0 A output and WBSOIC-16 package, but uses dual independent inputs (VIA/VIB) instead of PWM input. | Requires two controller outputs instead of one PWM line; lacks built-in overlap protection logic. | Select when discrete HS/LS control signals are available and dead-time management is handled externally. |
| ADUM4223BRIZ | 2.5 A peak output, 3.75 kVRMS isolation, 55 ns propagation delay; uses iCoupler magnetic isolation. | Lower drive strength limits use with high-gate-charge SiC FETs; requires external dead-time circuitry. | Select when lower cost and smaller footprint are prioritized over 4.0 A drive capability and integrated dead-time programming. |
Compared with Si8233AB-C-ISR and ADUM4223BRIZ, SI8234AB-C-ISR uniquely combines 4.0 A drive strength, single-PWM input simplicity, and resistor-programmable dead time-reducing BOM count and layout complexity in space-constrained inverter designs.
Availability
SI8234AB-C-ISR is available at Aetrix Electronics and suitable for solar inverters, industrial motor drives, plasma display power supplies, and isolated dc-dc converters requiring stable component supply across extended production lifecycles.
Supply support for SI8234AB-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 markets.
The Si823x family was designed specifically for high-reliability isolated gate driving in power conversion systems-emphasizing robustness against fast transients, thermal resilience, and safety certification compliance.
FAQ
What is the maximum switching frequency supported by the SI8234AB-C-ISR?
The SI8234AB-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 (with 200 pF load). This makes it suitable for high-frequency resonant converters and advanced SiC-based topologies where timing precision is critical to efficiency and EMI performance.
Does the SI8234AB-C-ISR require external components for dead time configuration?
Yes, the SI8234AB-C-ISR uses an external resistor (RDT) connected between the DT pin and VDDI to set dead time from 70 ns to 900 ns. The datasheet specifies RDT values from 6 kΩ to 220 kΩ, with no additional capacitors or active circuitry required-enabling simple, predictable, and production-stable timing control without MCU intervention.
How does the SI8234AB-C-ISR handle undervoltage conditions on the driver supplies?
The SI8234AB-C-ISR implements independent undervoltage lockout (UVLO) on both VDDA and VDDB, with thresholds selectable at 5 V, 8 V, 10 V, or 12.5 V (determined by part number variant). When either supply drops below its UVLO threshold, both outputs are forced low, preventing partial gate drive that could cause device failure in the power stage.
Can the SI8234AB-C-ISR drive SiC MOSFETs directly?
Yes, the SI8234AB-C-ISR's 4.0 A peak sink/source current, 12 ns typical rise/fall times, and low output resistance (1.0 Ω sink, 2.7 Ω source) enable direct drive of medium-power SiC MOSFETs (e.g., up to 650 V/40 mΩ devices) without external buffers-provided gate loop inductance is minimized and Miller clamping is implemented externally if needed.
What safety certifications apply to the SI8234AB-C-ISR?
The SI8234AB-C-ISR holds UL1577 (5000 Vrms), VDE 0884-5 (IEC 60747-5-5), CSA Component Notice 5A (IEC 60950-1/61010-1/60601-1), and CQC GB4943.1 certifications. These validate its 5 kVRMS isolation rating, 600 VRMS reinforced insulation working voltage, and suitability for medical, industrial, and grid-connected equipment.
SI8234AB-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:
- 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
SI8234AB-C-ISR FAQ
1.How can I place an order for SI8234AB-C-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8234AB-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 SI8234AB-C-ISR reliable?
The price and inventory of SI8234AB-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 SI8234AB-C-ISR is usually 5 days.
3.What payment methods are accepted for SI8234AB-C-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8234AB-C-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8234AB-C-ISR?
SI8234AB-C-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8234AB-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 SI8234AB-C-ISR?
For technical support, including SI8234AB-C-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8234AB-C-ISR requirements.
6.How does Aetrix verify that SI8234AB-C-ISR is sourced from the original manufacturer or authorized distributors?
All SI8234AB-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 SI8234AB-C-ISR meets industry standards.
7.What is the process for return or replacement of SI8234AB-C-ISR?
All SI8234AB-C-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8234AB-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 SI8234AB-C-ISR part is unused and in its original packaging.
Return procedure for SI8234AB-C-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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