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Skyworks Solutions Inc. SI8274DB4D-IS1R
- Part No.:
- SI8274DB4D-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8274DB4D-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,830
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Product details
Overview
SI8274DB4D-IS1R from Skyworks Solutions is a dual-channel isolated PWM gate driver IC designed for high-side/low-side MOSFET/IGBT/SiC/GaN half-bridge control in power conversion systems. It delivers 4 A peak output current per channel, supports 4.2–30 V driver supply, features programmable dead time (10–700 ns), and provides 200 kV/µs common-mode transient immunity (CMTI). It is used in solar inverters, traction inverters, and onboard chargers where precise timing and robust isolation are critical.
For engineers reviewing the SI8274DB4D-IS1R datasheet, SI8274DB4D-IS1R pinout, SI8274DB4D-IS1R application, or SI8274DB4D-IS1R equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and validated alternative options - all grounded in Skyworks' official Si827x family documentation and ordering guide.
Technical Context
The SI8274DB4D-IS1R implements a single PWM input architecture with internal overlap protection and user-programmable dead time via an external resistor on the DT pin. Its RF-based silicon isolation barrier enables 2.5 kVRMS withstand voltage (UL1577) and eliminates optocoupler aging and temperature drift.
It integrates independent UVLO monitors on both input (VDDI) and each output side (VDDA, VDDB), ensures low-jitter (200 ps p-p) propagation (60 ns max), and supports TTL-compatible inputs with >400 mV hysteresis. The device operates across –40°C to +125°C and is AEC-Q100 qualified.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Withstand Voltage | 2.5 kVRMS per UL1577 - enables reinforced insulation in 1000 V+ DC bus systems |
| Peak Output Current | 4 A per channel - drives high-gate-charge SiC/GaN FETs without external buffers |
| Propagation Delay | 60 ns (max) - supports >1 MHz switching with tight timing control |
| CMTI | 200 kV/µs - prevents false triggering in noisy motor drive and inverter environments |
| Dead Time Range | 10–700 ns (programmable via RDT) - eliminates shoot-through in half-bridge topologies |
| Supply Voltage Range | VDDI: 2.5–5.5 V; VDDA/VDDB: 4.2–30 V - interfaces directly with MCU logic and wide-range gate supplies |
| Operating Temperature | –40°C to +125°C - certified for industrial and automotive under-hood applications |
Pinout & Package
SI8274DB4D-IS1R is housed in a 16-pin SOIC package with creepage/clearance optimized for reinforced isolation. Pin assignments follow the Si8274 functional layout, with dedicated PWM, EN, DT, and dual-output terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PWM | Digital control input | TTL-compatible single-input signal that determines complementary VOA/VOB states |
| EN | Enable control | Active-high signal that forces both outputs low when deasserted - critical for safe shutdown |
| DT | Dead-time programming | Resistor-to-ground node setting precise non-overlap interval between VOA and VOB transitions |
| VOA | High-side gate drive output | 4 A capable pull-up/pull-down output referenced to GNDA - configurable as high- or low-side |
| VOB | Low-side gate drive output | 4 A capable complementary output referenced to GNDB - pairs with VOA in half-bridge operation |
| VDDA / VDDB | Driver-side power supplies | Independent 4.2–30 V supplies enabling floating high-side bias and split-rail flexibility |
| GNDI | Input-side ground | Logic reference plane electrically isolated from driver grounds - defines isolation barrier boundary |
Key Features
| Feature | Design Value |
|---|---|
| Programmable dead time | 10–700 ns via single external resistor - eliminates need for external logic or delay networks |
| Separate pull-up/pull-down outputs | Independent VO+ and VO– paths per channel - enables asymmetric rise/fall slew rate tuning |
| UVLO with independent monitoring | Dedicated thresholds for VDDI, VDDA, and VDDB - prevents erratic switching during brown-out conditions |
| Silicon RF isolation | No LED degradation, <10 ps jitter contribution, and –55°C to +125°C stability - outperforms optocouplers in lifetime and precision |
| AEC-Q100 qualification | Grade 1 (–40°C to +125°C) with PPAP support - meets automotive functional safety requirements for OBC and traction inverters |
Applications
| Solar Power Inverter | Traction Inverter |
|---|---|
Use Scenario: Isolated gate driving of SiC half-bridge modules in string inverters handling up to 1500 V DC bus. IC Role / Device Role / Timing Role: SI8274DB4D-IS1R receives PWM from DSP/FPGA and delivers synchronized, dead-time-controlled gate signals to high- and low-side switches. Use Value: 200 kV/µs CMTI prevents misfiring during fast dV/dt transients from SiC switching; 4 A drive strength reduces external buffer count. |
Use Scenario: Driving dual IGBT/SiC modules in EV traction inverters with stringent functional safety and thermal cycling demands. IC Role / Device Role / Timing Role: SI8274DB4D-IS1R serves as the isolated interface between MCU and power stage, enforcing shoot-through prevention via hardware-dead-time. Use Value: AEC-Q100 Grade 1 rating and –40°C to +125°C operation ensure reliability across vehicle life cycle; programmable DT adapts to varying gate charge profiles. |
| Onboard Charger (OBC) | Industrial UPS |
Use Scenario: Bidirectional AC/DC and DC/DC stages in 11–22 kW automotive OBCs requiring galvanic isolation and high efficiency. IC Role / Device Role / Timing Role: SI8274DB4D-IS1R controls totem-pole PFC and isolated DC/DC LLC primary-side switches using single-PWM architecture. Use Value: Dual independent VDDA/VDDB supplies enable bootstrap-free high-side drive; 60 ns propagation enables tight loop control at >200 kHz. |
Use Scenario: High-reliability gate driving in double-conversion UPS systems operating continuously in data center environments. IC Role / Device Role / Timing Role: SI8274DB4D-IS1R isolates control logic from 400–800 V DC link while delivering robust 4 A gate current to IGBTs. Use Value: 2.5 kVRMS isolation and UL/CSA/VDE certifications satisfy safety standards; low 200 ps p-p jitter improves output voltage regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated PWM gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8274AD1D-IS1R | Same Si8274 family, but AD1D variant uses 8-pin SOIC and lacks DT pin - fixed dead time only | Not suitable for designs requiring adjustable dead time; limited to simpler half-bridge implementations | Select SI8274DB4D-IS1R when programmable dead time and dual 16-pin SOIC layout are required for layout flexibility and timing optimization. |
| UCC5390SCD | Texas Instruments part with 4 A output, but only 100 kV/µs CMTI and no integrated dead-time programming | Requires external dead-time circuitry; lower noise immunity limits use in high-dV/dt SiC systems | Choose SI8274DB4D-IS1R over UCC5390SCD when system-level CMTI >150 kV/µs and hardware-programmable dead time are mandatory. |
Compared with Si8274AD1D-IS1R and UCC5390SCD, SI8274DB4D-IS1R uniquely combines programmable dead time, 200 kV/µs CMTI, and AEC-Q100 qualification in a single 16-pin SOIC package - making it the only option meeting full automotive inverter and high-end industrial inverter requirements without design compromises.
Availability
SI8274DB4D-IS1R is available at Aetrix Electronics and suitable for solar power inverters, traction inverters, and onboard chargers requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.
Supply support for SI8274DB4D-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, isolation, and timing technologies.
The Si827x product line was engineered specifically for high-reliability isolated gate driving in power electronics - targeting automotive electrification, renewable energy, and industrial motor control where optocoupler limitations demand silicon-isolation alternatives.
FAQ
What is the isolation rating and certification status of SI8274DB4D-IS1R?
SI8274DB4D-IS1R provides 2.5 kVRMS withstand voltage per UL1577 and carries UL, CSA, VDE, and CQC certifications for basic insulation. It meets IEC 60747-17 (VDE), IEC 62368-1 (CSA), and GB4943.1 (CQC) - confirming suitability for reinforced isolation in industrial and automotive end-equipment. SI8274DB4D-IS1R is rated for 1500 V DC working voltage in system-level designs.
How does the dead-time programming work on SI8274DB4D-IS1R?
SI8274DB4D-IS1R uses an external resistor (RDT) connected from the DT pin to GNDI to set dead time between VOA and VOB transitions. With RDT = 6–100 kΩ, dead time ranges from 10–700 ns per the equation DT = 2.02 × RDT + 7.77 (for 10–200 ns) or DT = 6.06 × RDT + 3.84 (for 20–700 ns). A 0.1 µF capacitor must be placed in parallel with RDT for noise immunity.
Does SI8274DB4D-IS1R support independent high-side and low-side supply voltages?
Yes. SI8274DB4D-IS1R has separate VDDA and VDDB pins, each supporting 4.2–30 V relative to their respective grounds (GNDA and GNDB). This allows true floating high-side operation without bootstrap complexity and enables asymmetric rail configurations - a key advantage over single-supply gate drivers. Both supplies are monitored independently for UVLO.
What is the peak output current capability of SI8274DB4D-IS1R, and how is it sustained?
SI8274DB4D-IS1R delivers 4 A peak source/sink current per channel (VOA and VOB), measured at VDDx = 15 V with pulse widths <250 ns. Sustained current depends on thermal design and duty cycle; the device's low RDS(ON) (2.7 Ω high-side, 1.0 Ω low-side) minimizes conduction loss. For continuous 4 A operation, PCB copper area and airflow must maintain junction temperature ≤150°C.
Is SI8274DB4D-IS1R pin-compatible with other Si827x variants like Si8273 or Si8275?
No. SI8274DB4D-IS1R uses a 16-pin SOIC package with PWM, DT, and dual-output pinout unique to the Si8274 family. Si8273 (dual-input high-side/low-side) and Si8275 (dual independent drivers) have different pin assignments and logic behavior. Substitution requires PCB redesign and firmware adaptation - SI8274DB4D-IS1R is not a drop-in replacement for other Si827x members.
SI8274DB4D-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, UL, VDE
SI8274DB4D-IS1R FAQ
1.How can I place an order for SI8274DB4D-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8274DB4D-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 SI8274DB4D-IS1R reliable?
The price and inventory of SI8274DB4D-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8274DB4D-IS1R is usually 5 days.
3.What payment methods are accepted for SI8274DB4D-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8274DB4D-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8274DB4D-IS1R?
SI8274DB4D-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8274DB4D-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 SI8274DB4D-IS1R?
For technical support, including SI8274DB4D-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8274DB4D-IS1R requirements.
6.How does Aetrix verify that SI8274DB4D-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8274DB4D-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 SI8274DB4D-IS1R meets industry standards.
7.What is the process for return or replacement of SI8274DB4D-IS1R?
All SI8274DB4D-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8274DB4D-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 SI8274DB4D-IS1R part is unused and in its original packaging.
Return procedure for SI8274DB4D-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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