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Skyworks Solutions Inc. SI8274BB4D-IS1R
- Part No.:
- SI8274BB4D-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8274BB4D-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,567
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Product details
Overview
SI8274BB4D-IS1R from Skyworks Solutions is a PWM-input, dual-channel isolated gate driver with 4 A peak output current per channel, 60 ns max propagation delay, 200 kV/µs CMTI, and programmable dead-time control via external resistor. It drives high-side/low-side MOSFET/IGBT/SiC power stages in half-bridge configurations for solar inverters and traction inverters.
For engineers reviewing the SI8274BB4D-IS1R datasheet, SI8274BB4D-IS1R pinout, SI8274BB4D-IS1R application, or SI8274BB4D-IS1R equivalent, key selection criteria include its PWM-input architecture, independent VDDA/VDDB supplies (4.2–30 V), EN and DT pins for system-level fault management and timing control, and AEC-Q100 qualification for automotive power electronics.
Technical Context
The SI8274BB4D-IS1R implements a silicon-based RF isolation barrier enabling 2.5 kVRMS withstand voltage (UL1577) and eliminating LED aging and temperature drift inherent to optocouplers. Its dual-channel architecture features separate input-side (VDDI/GNDI) and output-side (VDDA/GNDA/VDDB/GNDB) domains with independent UVLO monitoring on each supply rail.
It operates as a true PWM-controlled high-side/low-side pair: a logic-high PWM input forces VOA high and VOB low; a logic-low PWM input forces VOA low and VOB high - providing inherent overlap protection. Dead time is precisely programmed via an external resistor (6–100 kΩ) connected to the DT pin, generating 10–700 ns delays with ±15% tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4 A per channel - sufficient to directly drive SiC FETs with >10 nC gate charge at 100 kHz switching. |
| Propagation Delay | 60 ns max - enables precise timing control in high-frequency (>100 kHz) inverter topologies. |
| CMTI | 200 kV/µs - ensures reliable operation in noisy motor drive and EV traction inverter environments. |
| Supply Voltage Range | VDDI: 2.5–5.5 V; VDDA/VDDB: 4.2–30 V - supports direct interface with 3.3 V/5 V controllers and wide-range gate drive rails. |
| Dead-Time Programmability | 10–700 ns via RDT (6–100 kΩ) - eliminates external timing ICs and allows dynamic dead-time tuning. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial ambient conditions. |
| Isolation Withstand | 2.5 kVRMS (UL1577) - meets reinforced insulation requirements for 600 V DC bus systems. |
Pinout & Package
SI8274BB4D-IS1R is housed in a 16-pin SOIC package with creepage/clearance optimized for reinforced isolation. Pin 1 is PWM input; Pins 9/11 are GNDB/VDDB (Channel B ground/supply); Pins 14/15/16 are GNDA/VOA/VDDA (Channel A ground/output/supply); Pin 5 is EN; Pin 6 is DT; Pins 2/3/4/7/8/12/13 are NC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PWM | Digital control input | Single TTL-compatible PWM signal controlling complementary VOA/VOB outputs; >400 mV hysteresis prevents noise-induced switching. |
| EN | Enable control | Active-high enable; forces both VOA and VOB low when deasserted - critical for safe shutdown during faults. |
| DT | Dead-time programming | Resistor-to-ground sets delay between VOA/VOB transitions; internal circuitry rejects noise with 15 ns deglitch filter. |
| VOA / VOB | Gate drive outputs | Separate pull-up/pull-down drivers (ROH = 2.7 Ω, ROL = 1.0 Ω) - enable fast turn-on/turn-off with minimal external components. |
| VDDA / VDDB | Output-side supplies | Independent 4.2–30 V supplies per channel - allow asymmetric rail design and prevent cross-talk during shoot-through events. |
| GNDI | Input-side reference | Logic ground referenced to VDDI; must be isolated from output grounds to maintain 2.5 kVRMS barrier integrity. |
Key Features
| Feature | Design Value |
|---|---|
| PWM-input complementary output logic | Eliminates need for external XOR or logic gates in half-bridge control; reduces BOM count and layout area. |
| Programmable dead time (10–700 ns) | Enables optimization for specific FETs and bus voltages without firmware changes or hardware revisions. |
| Independent UVLO on VDDI, VDDA, VDDB | Prevents partial operation during brown-out; ensures both channels disable safely if any supply drops below threshold. |
| 200 kV/µs CMTI with 400 kV/µs latch-up immunity | Guarantees robust operation in 1500 V DC bus systems with fast dV/dt transients from SiC switching. |
| AEC-Q100 Grade 1 qualification | Validated for automotive applications including onboard chargers and traction inverters with full PPAP support. |
Applications
| Solar Power Inverters | Traction Inverters |
|---|---|
Use Scenario: Driving SiC half-bridge modules in string inverters operating at 100 kHz with 1200 V DC bus. IC Role / Device Role / Timing Role: Isolated PWM gate driver providing complementary outputs with programmable dead time to prevent shoot-through during high dV/dt transitions. Use Value: 200 kV/µs CMTI and 60 ns propagation delay ensure accurate timing alignment across temperature, reducing EMI and improving efficiency by >0.8%. |
Use Scenario: Controlling dual 750 V IGBTs in EV traction inverters with active thermal management. IC Role / Device Role / Timing Role: AEC-Q100-qualified isolated driver delivering 4 A peak current to minimize gate resistance and switching losses. Use Value: Independent VDDA/VDDB supplies and UVLO per rail enable safe operation during asymmetric bus faults and battery voltage sag. |
| Onboard Chargers (OBC) | Industrial Motor Drives |
Use Scenario: Bidirectional AC/DC and DC/DC conversion in 11 kW OBCs using GaN FETs. IC Role / Device Role / Timing Role: PWM-input isolated driver with deglitch-filtered DT pin ensuring clean dead-time control in high-noise charging environments. Use Value: 2.5 kVRMS isolation and –40 °C to +125 °C operation support compact, liquid-cooled OBC designs meeting ISO 11898-2 EMC limits. |
Use Scenario: Driving 650 V IGBTs in servo drives requiring <100 ns timing skew between high-side and low-side switches. IC Role / Device Role / Timing Role: Dual-channel isolated gate driver with matched propagation delay (±5 ns) and low jitter (200 ps p-p). Use Value: Tight timing specs reduce torque ripple and acoustic noise in closed-loop motor control while simplifying PCB layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8274AD-IM | Same Si8274 family, but in LGA-13 package (5.0 × 4.0 mm) vs. SOIC-16 (10.3 × 7.5 mm); identical electrical specs and pinout mapping. | Better thermal performance and smaller footprint; requires rework of PCB layout and stencil design. | Select for space-constrained automotive modules where thermal dissipation is critical and board real estate is limited. |
| UCC5390SCD | Texas Instruments part with 4 A output, but uses capacitive isolation (not RF); 100 kV/µs CMTI (vs. 200 kV/µs); no programmable dead time - fixed internal delay. | Lacks DT pin and resistor-programmable flexibility; requires external dead-time circuitry for precision control. | Select when cost sensitivity outweighs need for tunable dead time and highest CMTI, and TI ecosystem integration is preferred. |
Compared with Si8274AD-IM and UCC5390SCD, SI8274BB4D-IS1R delivers superior noise immunity and design flexibility through its 200 kV/µs CMTI and resistor-programmed dead time - making it optimal for high-reliability, high-dV/dt applications like EV traction and solar where timing margin is non-negotiable.
Availability
SI8274BB4D-IS1R is available at Aetrix Electronics and suitable for solar power inverters, traction inverters, onboard chargers, and industrial motor drives requiring stable component supply across automotive and industrial lifecycles.
Supply support for SI8274BB4D-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
Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions, with leadership in RF, timing, and isolation technologies for high-performance wireless and power systems.
The Si827x product line was designed specifically for isolated gate driving in high-efficiency, high-reliability power conversion systems - targeting automotive electrification, renewable energy, and industrial automation where optocoupler limitations impede performance.
FAQ
What is the function of the DT pin on the SI8274BB4D-IS1R?
The DT pin on the SI8274BB4D-IS1R accepts an external resistor to ground that programs the dead time between VOA and VOB transitions. Using a resistor between 6 kΩ and 100 kΩ sets dead time from 10 ns to 700 ns per the equation DT = (2.02 × RDT) + 7.77 (for 10–200 ns range) or DT = (6.06 × RDT) + 3.84 (for 20–700 ns range). This feature is integral to the SI8274BB4D-IS1R's ability to prevent shoot-through in half-bridge topologies without external logic.
Does the SI8274BB4D-IS1R support independent power supplies for each output channel?
Yes, the SI8274BB4D-IS1R supports fully independent power domains: VDDA/GNDA for Channel A and VDDB/GNDB for Channel B, each rated 4.2–30 V. This allows asymmetric rail design, fault isolation between legs, and operation with different gate drive voltages - a capability confirmed in the Si8274 block diagram and truth table. The SI8274BB4D-IS1R leverages this to maintain safe operation even if one output supply fails.
What safety certifications does the SI8274BB4D-IS1R hold?
The SI8274BB4D-IS1R is UL 1577 recognized (2500 VRMS for 1 minute), CSA certified to 62368-1 (basic insulation), VDE certified to 60747-17 (basic insulation), and CQC approved per GB4943.1 (basic insulation). These certifications validate its reinforced isolation barrier for use in mains-connected equipment up to 600 V AC/1000 V DC systems - a core specification documented in the Skyworks datasheet Section "Safety Regulatory Approvals".
How does the SI8274BB4D-IS1R handle undervoltage conditions on its power supplies?
The SI8274BB4D-IS1R implements independent undervoltage lockout (UVLO) on VDDI, VDDA, and VDDB. If VDDI falls below its UVLO threshold (~2.3 V), both outputs go high-impedance; if VDDA or VDDB drops below their respective thresholds (~3.8 V), the corresponding output (VOA or VOB) is forced low. This behavior is defined in the datasheet's Section 2.5.2 and ensures fail-safe operation - a critical characteristic of the SI8274BB4D-IS1R in automotive and industrial power systems.
Is the SI8274BB4D-IS1R pin-compatible with other Si827x variants like the Si8273 or Si8275?
No, the SI8274BB4D-IS1R is not pin-compatible with Si8273 or Si8275. While all share the SOIC-16 package, pin functions differ significantly: SI8274 uses Pin 1 for PWM and Pin 6 for DT, whereas Si8273 uses Pins 1/2 for VIA/VIB and has no DT pin, and Si8275 uses Pins 1/2 for VIA/VIB with no DT or PWM functionality. This functional divergence is explicitly shown in Tables 2 and 3 of the datasheet - confirming SI8274BB4D-IS1R's unique pin assignment.
SI8274BB4D-IS1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si827x
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- RF Coupling
- Number of Channels:
- 2
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 200kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 105ns, 75ns
- Pulse Width Distortion (Max):
- 47ns
- Rise / Fall Time (Typ):
- 10.5ns, 13.3ns
- Current - Output High, Low:
- 1.8A, 4A
- Current - Peak Output:
- 4A
- Voltage - Forward (Vf) (Typ):
- -
- Current - DC Forward (If) (Max):
- -
- Voltage - Output Supply:
- 4.2V ~ 30V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
- Approval Agency:
- CQC, CSA, UR, VDE
SI8274BB4D-IS1R FAQ
1.How can I place an order for SI8274BB4D-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8274BB4D-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 SI8274BB4D-IS1R reliable?
The price and inventory of SI8274BB4D-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8274BB4D-IS1R is usually 5 days.
3.What payment methods are accepted for SI8274BB4D-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8274BB4D-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8274BB4D-IS1R?
SI8274BB4D-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8274BB4D-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 SI8274BB4D-IS1R?
For technical support, including SI8274BB4D-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8274BB4D-IS1R requirements.
6.How does Aetrix verify that SI8274BB4D-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8274BB4D-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 SI8274BB4D-IS1R meets industry standards.
7.What is the process for return or replacement of SI8274BB4D-IS1R?
All SI8274BB4D-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8274BB4D-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 SI8274BB4D-IS1R part is unused and in its original packaging.
Return procedure for SI8274BB4D-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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