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Skyworks Solutions Inc. SI8234AB-D-ISR
- Part No.:
- SI8234AB-D-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8234AB-D-ISR.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,369
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Product details
Overview
SI8234AB-D-ISR from Skyworks Solutions is a high-side/low-side isolated gate driver IC with PWM input, 4.0 A peak output current, 2.5 kVRMS isolation rating, and 5 V undervoltage lockout (UVLO) threshold-designed for half-bridge MOSFET/IGBT drive in industrial inverters and onboard chargers.
For engineers reviewing the SI8234AB-D-ISR datasheet, SI8234AB-D-ISR pinout, SI8234AB-D-ISR application, or SI8234AB-D-ISR equivalent, this page delivers verified specifications, SOIC-16 narrow-body package details, automotive-grade qualification status, and real-world timing behavior including programmable dead time control and overlap protection.
Technical Context
The SI8234AB-D-ISR implements RF-based silicon isolation with a single PWM input controlling complementary high-side and low-side outputs, featuring integrated dead time programming via external resistor and automatic overlap protection to prevent shoot-through. Its input side operates at 4.5–5.5 V logic levels with >400 mV hysteresis.
It supports up to 8 MHz switching frequency, maintains 45 ns propagation delay (typ), and guarantees safe operation across –40°C to +125°C ambient. Output drivers are independently UVLO-monitored (VDDA/VDDB), and both outputs default low during input-side power loss or disable assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2.5 kVRMS per UL1577 - enables reinforced insulation in 250–400 Vdc bus systems without additional creepage barriers |
| Peak Output Current | 4.0 A source/sink - drives 1200 V SiC MOSFETs with <10 nC gate charge at ≤100 kHz switching |
| Propagation Delay | 45 ns (max) - ensures tight timing alignment between high-side and low-side edges in hard-switched topologies |
| UVLO Threshold | 5 V (rising), 4.5 V (falling) - prevents erratic gate drive during brown-out conditions in 5 V controller rails |
| Switching Frequency | Up to 8 MHz - supports resonant LLC and GaN-based high-frequency DC-DC converters |
| Dead Time Programmability | Resistor-adjustable (0–1000 ns range) - eliminates need for external timing ICs in motor control and inverter designs |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive environments and industrial motor drives |
Pinout & Package
SI8234AB-D-ISR is housed in a RoHS-compliant SOIC-16 narrow-body package (5.3 mm width, 10.3 mm length), rated for 260 °C peak reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Input-side ground and supply | GNDI (pins 1, 8), VDDI (pin 2) - powers isolated input die; accepts 4.5–5.5 V logic rail |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side ground, supply, and drivers | VDDA (pin 10), VDDB (pin 13), GNDA (pin 9), GNDB (pin 16), VOA (pin 11), VOB (pin 14) - dual independent output supplies support floating high-side topology |
| PWM | Input signal | Pin 3 - TTL-compatible PWM input; high = VOA high / VOB low; low = VOA low / VOB high |
| DISABLE | Global shutdown control | Pin 4 - active-high; forces both outputs low within tSD ≤ 100 ns, independent of input state or UVLO status |
| DT | Dead time programming | Pin 5 - connects to ground via RDT (10–1000 kΩ) to set dead time per DT ≈ 10 × RDT (ns) |
Key Features
| Feature | Design Value |
|---|---|
| RF-based silicon isolation barrier | Eliminates LED aging and CMTI drift issues of optocouplers; achieves >35 kV/µs common-mode transient immunity |
| Integrated overlap protection | Hardware-enforced prevention of simultaneous high-side/low-side conduction - no firmware or external logic required |
| Programmable dead time | Single-resistor tuning (0–1000 ns) enables precise optimization for different MOSFET/IGBT gate charges and layout parasitics |
| AEC-Q100 Grade 1 qualification | Validated for automotive applications including onboard chargers and traction inverters; supported by AIAG PPAP documentation |
| Dual independent UVLO monitors | Separate VDDA and VDDB UVLO detection ensures safe shutdown even if one output supply fails while the other remains active |
Applications
| Industrial Inverters | Solar Microinverters |
|---|---|
|
Use Scenario: Driving high-voltage IGBTs in 3-phase 400 VAC grid-tied inverters with fast transient response requirements. IC Role / Device Role / Timing Role: High-side/low-side isolated gate driver providing synchronized, shoot-through-free switching with programmable dead time. Use Value: 4.0 A peak drive current reduces external gate resistor count; 45 ns propagation delay enables <500 ns minimum dead time implementation. |
Use Scenario: Controlling SiC MOSFET half-bridges in compact, high-efficiency solar microinverters operating up to 170 kHz. IC Role / Device Role / Timing Role: PWM-input isolated driver delivering precise edge alignment and robust noise immunity in high dv/dt environments. Use Value: 2.5 kVRMS isolation meets IEC 62109 safety requirements; SOIC-16 narrow-body footprint saves PCB area vs. optocoupler + discrete driver solutions. |
| Onboard EV Chargers | Industrial Motor Drives |
|
Use Scenario: Gate driving dual active bridge (DAB) converters in 11 kW AC/DC onboard chargers with bidirectional power flow. IC Role / Device Role / Timing Role: Isolated PWM driver enabling synchronous rectification and soft-switching control with overlap protection. Use Value: AEC-Q100 qualification ensures reliability in automotive thermal cycles; 5 V UVLO matches typical MCU I/O voltage rails. |
Use Scenario: Driving 650 V IGBTs in variable-frequency drives for HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: High-current isolated driver supporting 10–20 kHz PWM with fast recovery from overcurrent faults. Use Value: Dual independent UVLO monitoring prevents partial failure modes; 125°C max junction temperature supports sealed enclosure operation. |
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 |
|---|---|---|---|
| Si8234BB-D-IS1 | Same SOIC-16 narrow-body package and PWM input, but 8 V UVLO threshold and 2.5 kVRMS rating | Better suited for 12 V controller rails; less compatible with 5 V MCU interfaces | Select when system uses 8–12 V logic supply and requires higher UVLO hysteresis margin |
| UCC21540ADWKR | Ti's dual-channel 4-A isolated driver with 5.7 kVRMS, 35 ns propagation delay, and split-output architecture | Requires separate enable/control logic per channel; no built-in overlap protection or dead time programming | Choose for ultra-low propagation skew in GaN-based PFC stages where independent channel control is preferred |
Compared with SI8234AB-D-ISR, Si8234BB-D-IS1 offers higher UVLO but lacks 5 V compatibility, while UCC21540ADWKR delivers lower delay but adds design complexity due to absence of integrated overlap logic and dead time tuning.
Availability
SI8234AB-D-ISR is available at Aetrix Electronics and suitable for industrial inverters, onboard EV chargers, and solar microinverters requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.
Supply support for SI8234AB-D-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
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 engineered specifically for high-reliability isolated gate drive in power conversion systems-emphasizing robustness, programmability, and automotive qualification from the silicon level upward.
FAQ
What is the isolation voltage rating of SI8234AB-D-ISR?
The SI8234AB-D-ISR has a certified 2.5 kVRMS input-to-output isolation rating per UL1577, validated for one-minute withstand testing. This rating applies to the SOIC-16 narrow-body package variant and supports reinforced insulation in 250–400 Vdc bus applications without requiring additional spacing or potting.
Does SI8234AB-D-ISR support programmable dead time?
Yes, SI8234AB-D-ISR supports resistor-programmable dead time via its DT pin (Pin 5). Using Equation DT ≈ 10 × RDT (ns), a 100 kΩ resistor sets ~1 µs dead time. The feature is exclusive to high-side/low-side variants like SI8234AB-D-ISR and enables precise shoot-through prevention without external timing circuitry.
What is the UVLO threshold for SI8234AB-D-ISR?
The SI8234AB-D-ISR features a 5 V rising-edge UVLO threshold on its input supply (VDDI), with hysteresis of 0.5 V (4.5 V falling edge). This matches standard 5 V MCU I/O rails and ensures reliable startup/shutdown behavior in automotive and industrial control subsystems.
Is SI8234AB-D-ISR qualified for automotive applications?
Yes, SI8234AB-D-ISR is AEC-Q100 Grade 1 qualified and designated as an automotive-grade part (suffix "-A" in automotive OPNs like SI8234AB-AS). It undergoes full automotive process flows, supports AIAG-compliant PPAP, and includes IMDS/CAMDS material declarations.
How does the PWM input function in SI8234AB-D-ISR?
In SI8234AB-D-ISR, the PWM input (Pin 3) directly controls complementary outputs: PWM high → VOA high / VOB low; PWM low → VOA low / VOB high. This eliminates need for external logic inversion and simplifies control interface in half-bridge and DAB topologies.
SI8234AB-D-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:
- 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):
- 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-D-ISR FAQ
1.How can I place an order for SI8234AB-D-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8234AB-D-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-D-ISR reliable?
The price and inventory of SI8234AB-D-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-D-ISR is usually 5 days.
3.What payment methods are accepted for SI8234AB-D-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8234AB-D-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8234AB-D-ISR?
SI8234AB-D-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8234AB-D-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-D-ISR?
For technical support, including SI8234AB-D-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8234AB-D-ISR requirements.
6.How does Aetrix verify that SI8234AB-D-ISR is sourced from the original manufacturer or authorized distributors?
All SI8234AB-D-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-D-ISR meets industry standards.
7.What is the process for return or replacement of SI8234AB-D-ISR?
All SI8234AB-D-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8234AB-D-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-D-ISR part is unused and in its original packaging.
Return procedure for SI8234AB-D-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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