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Skyworks Solutions Inc. SI8234AB-C-IS1R
- Part No.:
- SI8234AB-C-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8234AB-C-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,412
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Product details
Overview
SI8234AB-C-IS1R from Silicon Labs is a 4.0 A peak-output, PWM-input high-side/low-side isolated gate driver in a wide-body SOIC-16 package with 5 kVRMS input-to-output isolation, 60 ns max propagation delay, and programmable dead time. It drives IGBTs and MOSFETs in half-bridge topologies for solar inverters and motor control systems.
For engineers reviewing the SI8234AB-C-IS1R datasheet, SI8234AB-C-IS1R pinout, SI8234AB-C-IS1R application, or SI8234AB-C-IS1R equivalent, key selection criteria include its 4.0 A sink/source capability, 5 kVRMS reinforced insulation (UL 1577, VDE 0884-5), 8 MHz switching support, overlap protection, and compatibility with 12–24 V driver supplies under –40 to +125 °C operation.
Technical Context
The SI8234AB-C-IS1R implements RF-based on/off keying across a silicon isolation barrier-enabling robust noise immunity (>45 kV/µs CMTI) without startup initialization. Its single PWM input controls both high-side and low-side outputs with internal logic enforcing non-overlapping drive states.
It integrates programmable dead time via external resistor (70–900 ns range), undervoltage lockout on all three supply rails (VDDI, VDDA, VDDB), and independent disable functionality. The device operates with TTL-compatible inputs (400 mV hysteresis) and supports dual-ground configurations for flexible system-level isolation partitioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4.0 A sink/source per channel - enables direct drive of high-gate-charge IGBTs without external buffers |
| Isolation Rating | 5 kVRMS (1 min, UL 1577) - meets reinforced insulation requirements for industrial and solar inverters |
| Propagation Delay | ≤60 ns (max) - supports >8 MHz switching frequencies with tight timing control |
| Common-Mode Transient Immunity | ≥45 kV/µs - ensures reliable operation in noisy motor drive and power conversion environments |
| Operating Temperature | –40 to +125 °C - qualified for under-hood automotive and industrial ambient conditions |
| Supply Voltage Range | VDDI: 2.7–5.5 V; VDDA/VDDB: 6.5–24 V - compatible with standard logic and gate-drive rail voltages |
| Dead Time Programmability | 70–900 ns via external resistor - allows precise tuning to prevent shoot-through in half-bridge designs |
Pinout & Package
SI8234AB-C-IS1R is housed in a RoHS-compliant wide-body SOIC-16 package (10.3 mm × 10.3 mm, 2.65 mm height) with creepage/clearance ≥8.0 mm and reinforced insulation per IEC 60950-1 and IEC 60601-1.
| 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 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 |
|---|---|
| PWM-input architecture | Single-input control eliminates need for external logic to coordinate HS/LS timing; reduces PCB routing complexity |
| Programmable dead time | Configurable 70–900 ns dead time via single external resistor - avoids shoot-through without microcontroller intervention |
| Overlap protection | Hardware-enforced non-overlap logic prevents simultaneous HS/LS conduction even during input glitches or timing faults |
| AEC-Q100 qualification | Qualified to Grade 1 (–40 to +125 °C) - suitable for automotive traction inverter auxiliary gate drive |
| High CMTI immunity | 45 kV/µs minimum - maintains signal integrity in high-dV/dt environments like SiC-based converters |
Applications
| Solar Inverters | Motor Control Systems |
|---|---|
Use Scenario: Half-bridge IGBT gate drive in string inverters with transformerless topology and 1000 V DC bus. IC Role / Device Role / Timing Role: Isolated PWM-to-HS/LS gate driver enforcing dead time and preventing shoot-through during fast switching transitions. Use Value: 5 kVRMS isolation enables compliance with IEC 62109; 4.0 A drive strength reduces external buffer count and improves efficiency at 16–20 kHz switching. | Use Scenario: Three-phase BLDC inverter in HVAC compressors operating at 40–60 kHz with thermal constraints. IC Role / Device Role / Timing Role: High-speed isolated gate driver delivering precise edge timing and overlap protection for field-oriented control loops. Use Value: 60 ns max propagation delay minimizes phase error; 125 °C junction rating supports compact heatsink integration. |
| Industrial UPS | Plasma Display Drivers |
Use Scenario: Bidirectional DC-AC stage in online double-conversion UPS with galvanic isolation between control and power domains. IC Role / Device Role / Timing Role: Reinforced-isolation gate driver enabling safe control of 600 V IGBTs while meeting UL 62368-1 creepage requirements. Use Value: 8.0 mm creepage/clearance and CSA/VDE/UL certifications simplify safety certification; dual-supply architecture isolates control logic from power-stage transients. | Use Scenario: Row/column scanning drivers in AC plasma display panels requiring synchronized high-voltage pulse generation. IC Role / Device Role / Timing Role: Fast, isolated level-shifter converting low-voltage PWM signals into high-current gate pulses for sustain and address electrodes. Use Value: 45 kV/µs CMTI prevents false triggering during high-frequency panel discharge events; 4.0 A peak current sustains electrode charging under load. |
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 |
|---|---|---|---|
| Si8234AD-C-IS1R | Different UVLO thresholds: VDDIUV+ = 4.0 V (min), VDDA/VDDBUV+ = 12.5 V (min) vs. SI8234AB-C-IS1R's 4.0 V / 10 V thresholds | Optimized for higher driver-supply UVLO margin in 15 V gate-drive rails; less tolerant of brownout on VDDA/VDDB | Select when system requires tighter 12.5 V driver-rail UVLO to prevent partial turn-on during power-up |
| UCC21540DWPR | 5.7 kVRMS isolation, dual-input (IN+/IN−), 4 A sink/source, but no programmable dead time or overlap protection | Requires external logic or MCU for dead-time insertion; lacks hardware shoot-through prevention | Choose when design uses controller-based dead time and prioritizes higher isolation voltage over integrated protection |
Compared with Si8234AD-C-IS1R and UCC21540DWPR, SI8234AB-C-IS1R uniquely combines 5 kVRMS isolation, hardware-enforced overlap protection, and resistor-programmable dead time in a single PWM-input device-reducing BOM count and improving fault resilience in cost-sensitive solar and motor drives.
Availability
SI8234AB-C-IS1R is available at Aetrix Electronics and suitable for solar inverters, motor control systems, and industrial UPS requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.
Supply support for SI8234AB-C-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 family was designed specifically for high-reliability isolated gate driving in half-bridge and full-bridge power stages-emphasizing robustness, programmable timing control, and regulatory compliance across global safety standards.
FAQ
What is the isolation voltage rating of the SI8234AB-C-IS1R?
The SI8234AB-C-IS1R is rated for 5 kVRMS input-to-output isolation per UL 1577 (1 minute test), verified on the wide-body SOIC-16 package. This corresponds to reinforced insulation per IEC 60950-1, IEC 60601-1, and VDE 0884-5 standards, supporting up to 600 VRMS working voltage in end equipment.
Does the SI8234AB-C-IS1R support programmable dead time?
Yes, the SI8234AB-C-IS1R supports resistor-programmable dead time ranging from 70 ns to 900 ns using an external RDT connected to the DT pin. The exact value depends on resistor selection per Figure 42 in the datasheet, and the largest supported value is 220 kΩ.
What is the peak output current capability of the SI8234AB-C-IS1R?
The SI8234AB-C-IS1R delivers 4.0 A peak sink current and 2.0 A peak source current per channel under typical conditions (VDDA = VDDB = 15 V, TA = 25 °C). Its low output resistances (RON(SINK) = 1.0 Ω, RON(SOURCE) = 2.7 Ω) ensure minimal voltage drop during high-current gate charging/discharging.
How does the SI8234AB-C-IS1R implement overlap protection?
The SI8234AB-C-IS1R enforces hardware-level overlap protection by detecting simultaneous high states on the internal PWM-derived HS/LS control paths and forcing both outputs low for the duration of the conflict. This prevents shoot-through even during input transients or MCU faults, independent of dead time settings.
What safety certifications apply to the SI8234AB-C-IS1R?
The SI8234AB-C-IS1R holds UL 1577 (5000 Vrms), CSA Component Notice 5A (IEC 60950-1/61010-1/60601-1), VDE 0884-5 (IEC 60747-5-5), and CQC GB4943.1 certifications. All apply to the wide-body SOIC-16 variant and cover reinforced insulation up to 600 VRMS working voltage.
SI8234AB-C-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):
- 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-IS1R FAQ
1.How can I place an order for SI8234AB-C-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8234AB-C-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 SI8234AB-C-IS1R reliable?
The price and inventory of SI8234AB-C-IS1R 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-IS1R is usually 5 days.
3.What payment methods are accepted for SI8234AB-C-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8234AB-C-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8234AB-C-IS1R?
SI8234AB-C-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8234AB-C-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 SI8234AB-C-IS1R?
For technical support, including SI8234AB-C-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8234AB-C-IS1R requirements.
6.How does Aetrix verify that SI8234AB-C-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8234AB-C-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 SI8234AB-C-IS1R meets industry standards.
7.What is the process for return or replacement of SI8234AB-C-IS1R?
All SI8234AB-C-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8234AB-C-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 SI8234AB-C-IS1R part is unused and in its original packaging.
Return procedure for SI8234AB-C-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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