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Skyworks Solutions Inc. SI8234BB-C-IS1R
- Part No.:
- SI8234BB-C-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8234BB-C-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,353
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Product details
Overview
SI8234BB-C-IS1R 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 programmable dead time. It features PWM input architecture, operates from 2.7–5.5 V on the input side and up to 24 V on driver outputs, and is used in IGBT/MOSFET half-bridge drives for solar inverters and motor control.
For engineers reviewing the SI8234BB-C-IS1R datasheet, SI8234BB-C-IS1R pinout, SI8234BB-C-IS1R application, or SI8234BB-C-IS1R equivalent, key selection criteria include its 4.0 A sink/source capability, 5 kVRMS reinforced insulation (UL/VDE/CSA/CQC certified), PWM-input logic configuration, SOIC-16 wide-body package, and overlap protection for bridge-leg safety.
Technical Context
The SI8234BB-C-IS1R implements RF-based digital isolation with on/off keying modulation across a silicon dielectric barrier, eliminating optocoupler drift and enabling robust noise immunity (>45 kV/µs CMTI). Its dual-channel architecture isolates independent high-side and low-side gate drive paths with shared input-side logic.
It uses a single PWM input to generate complementary HS/LS outputs with built-in programmable dead time (70–900 ns via external resistor) and overlap protection. The device incorporates undervoltage lockout on both input (2.10–2.5 V threshold) and output sides (5–12.5 V selectable UVLO), ensuring safe operation during power transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4.0 A sink / 2.0 A source per channel - drives high-capacitance IGBTs and SiC MOSFETs without external buffers. |
| Isolation Rating | 5 kVRMS (1 min, UL 1577) - meets reinforced insulation requirements for industrial and solar inverters up to 1000 VRMS working voltage. |
| Propagation Delay | ≤60 ns (max), 30 ns (typ) - enables >1 MHz switching in hard-switched topologies with tight timing control. |
| Dead Time Range | 70–900 ns (programmable via RDT) - prevents shoot-through in half-bridge configurations without external timing circuitry. |
| Input Supply Range | 2.7–5.5 V - compatible with 3.3 V and 5 V microcontrollers and isolated logic interfaces. |
| Operating Temperature | –40 °C to +125 °C - supports under-hood automotive and industrial ambient conditions. |
| CMTI | ≥45 kV/µs - maintains signal integrity in high-dV/dt environments like motor drives and DC-DC converters. |
Pinout & Package
SI8234BB-C-IS1R is housed in a RoHS-compliant SOIC-16 wide-body package (WBSOIC-16) with 8.0 mm creepage/clearance, optimized for high-voltage isolation integrity.
| 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) - referenced to input-side ground only. |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side power and drive | Pins 9–16 form isolated output domain: VOA (9), GNDA (10), VDDA (11), VOB (12), GNDB (13), VDDB (14), DT (15), NC (16) - fully floating, supports separate or common output grounds. |
Key Features
| Feature | Design Value |
|---|---|
| PWM-input logic interface | Accepts single PWM signal and internally generates complementary HS/LS outputs with programmable dead time - reduces MCU GPIO count and firmware complexity. |
| Overlap protection | Hardware-enforced blanking prevents simultaneous HS/LS conduction even during input glitches or timing violations - eliminates risk of shoot-through failure. |
| Reinforced insulation certification | UL 1577 (5 kVRMS), VDE 0884-5, CSA 5A, CQC GB4943.1 - qualified for safety-critical applications requiring double insulation without external barriers. |
| Thermal derating support | Specified safety-limiting current (50 mA) and thermal resistance (θJA = 100 °C/W) enable reliable operation at 125 °C ambient with standard PCB layout. |
| High CMTI immunity | 45 kV/µs minimum common-mode transient immunity - ensures stable operation in noisy power stages with fast-switching SiC/GaN devices. |
Applications
| Motor Control Systems | Solar Inverters |
|---|---|
Use Scenario: Driving IGBT half-bridges in 3-phase BLDC or PMSM motor controllers for HVAC compressors and industrial servo drives. IC Role / Device Role / Timing Role: Isolated gate driver providing independent HS/LS control with programmable dead time to prevent shoot-through during commutation. Use Value: 4.0 A peak output directly drives 1200 V IGBTs; 60 ns propagation delay enables precise 20 kHz PWM timing with <1% duty-cycle error. | Use Scenario: Controlling MOSFET/IGBT switches in string-level DC-DC converters and three-phase grid-tied inverters. IC Role / Device Role / Timing Role: High-reliability isolated driver delivering reinforced insulation (5 kVRMS) and >45 kV/µs CMTI for photovoltaic system safety compliance. Use Value: UL/VDE-certified isolation meets IEC 62109 and UL 1741 requirements; wide –40 to +125 °C range supports outdoor deployment. |
| Industrial DC-DC Power Supplies | Plasma Display Drivers |
Use Scenario: Gate driving synchronous rectifiers and primary-side switches in isolated 48 V–12 V telecom and server PSUs. IC Role / Device Role / Timing Role: Dual-channel isolated driver supporting asymmetric topology control (e.g., active clamp forward, LLC resonant) with independent UVLO monitoring. Use Value: Input-side UVLO (2.10–2.5 V) and output-side selectable UVLO (5/8/10/12.5 V) ensure coordinated startup and fault shutdown across power domains. | Use Scenario: Driving high-voltage sustain and scan electrodes in AC plasma display panels requiring precise timing and high-voltage isolation. IC Role / Device Role / Timing Role: Fast, isolated gate driver delivering 4.0 A pulses with sub-100 ns edge control to manage plasma cell discharge timing. Use Value: 10 ns minimum pulse width and 12 ns typical rise/fall time (CL = 200 pF) enable accurate 200+ kHz electrode addressing without timing jitter. |
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 |
|---|---|---|---|
| Si8234AD-C-IS1R | Same pinout and function, but rated for 2.5 kVRMS isolation (narrow-body SOIC-16) and lower CMTI (20 kV/µs min). | Suitable for lower-voltage industrial systems (<600 VRMS working voltage) where cost and board space are prioritized over maximum isolation. | Select when regulatory requirements permit 2.5 kVRMS and thermal budget allows higher θJA (105 °C/W). |
| UCC21540ADWKR | 4-A dual-channel isolated driver with 5 kVRMS rating, but uses capacitive isolation and requires dual independent inputs (not PWM mode); no programmable dead time. | Requires external dead-time generation logic or MCU firmware coordination; better suited for discrete gate control rather than integrated PWM-to-HS/LS conversion. | Choose when needing higher peak current headroom (6 A) or TI ecosystem integration, but accept added design complexity for timing control. |
Compared with Si8234AD-C-IS1R, SI8234BB-C-IS1R delivers 2× higher isolation (5 vs. 2.5 kVRMS) and 2.25× higher CMTI (45 vs. 20 kV/µs), making it mandatory for solar and EV-charger applications. Versus UCC21540ADWKR, SI8234BB-C-IS1R integrates dead-time programming and overlap protection, reducing BOM count and firmware overhead in half-bridge designs.
Availability
SI8234BB-C-IS1R is available at Aetrix Electronics and suitable for solar inverters, motor control systems, and industrial DC-DC power supplies requiring stable component supply, long-term lifecycle assurance, and full regulatory compliance documentation.
Supply support for SI8234BB-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 Laboratories is a fabless semiconductor company specializing in 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 high-voltage power conversion, combining RF-based digital isolation with integrated safety features like programmable dead time and overlap protection.
FAQ
What is the isolation voltage rating of the SI8234BB-C-IS1R?
The SI8234BB-C-IS1R is rated for 5 kVRMS input-to-output isolation per UL 1577 (1 minute test), with production-tested withstand voltage of 6.0 kVRMS. This applies specifically to the SOIC-16 wide-body package variant and supports reinforced insulation per IEC 60747-5-5, VDE 0884-5, and CSA Component Notice 5A.
Does the SI8234BB-C-IS1R support programmable dead time?
Yes, the SI8234BB-C-IS1R supports hardware-programmable dead time via an external resistor (RDT) connected to pin 15 (DT). Dead time ranges from 70 ns (RDT = 6 kΩ) to 900 ns (RDT = 100 kΩ), with a maximum usable resistor value of 220 kΩ. This feature is integral to the SI8234BB-C-IS1R's overlap protection architecture.
What input logic configuration does the SI8234BB-C-IS1R use?
The SI8234BB-C-IS1R uses a single PWM input (pin 3) to generate complementary high-side and low-side gate drive outputs. Unlike dual-input variants (e.g., SI8230), it does not require separate HS and LS control signals - the SI8234BB-C-IS1R internally decodes PWM edges and enforces dead time, simplifying MCU interface.
What is the peak output current capability of the SI8234BB-C-IS1R?
The SI8234BB-C-IS1R delivers 4.0 A peak sink current and 2.0 A peak source current per channel (VOA/VOB), as specified in Table 1 of the datasheet under "Output Short-Circuit Pulsed Sink/Source Current". This enables direct drive of high-gate-charge IGBTs and SiC MOSFETs without external buffer stages.
Which safety certifications apply to the SI8234BB-C-IS1R?
The SI8234BB-C-IS1R holds UL 1577 (5 kVRMS), VDE 0884-5 (IEC 60747-5-5), CSA Component Notice 5A (IEC 60950-1/61010-1/60601-1), and CQC GB4943.1 certifications. All apply to the WBSOIC-16 package and confirm reinforced insulation suitability for industrial, medical, and solar applications.
SI8234BB-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:
- 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-IS1R FAQ
1.How can I place an order for SI8234BB-C-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8234BB-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 SI8234BB-C-IS1R reliable?
The price and inventory of SI8234BB-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 SI8234BB-C-IS1R is usually 5 days.
3.What payment methods are accepted for SI8234BB-C-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8234BB-C-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8234BB-C-IS1R?
SI8234BB-C-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8234BB-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 SI8234BB-C-IS1R?
For technical support, including SI8234BB-C-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8234BB-C-IS1R requirements.
6.How does Aetrix verify that SI8234BB-C-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8234BB-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 SI8234BB-C-IS1R meets industry standards.
7.What is the process for return or replacement of SI8234BB-C-IS1R?
All SI8234BB-C-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8234BB-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 SI8234BB-C-IS1R part is unused and in its original packaging.
Return procedure for SI8234BB-C-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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