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Skyworks Solutions Inc. SI8274GB1-IM1
- Part No.:
- SI8274GB1-IM1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 14-VDFN
- Datasheet:
-
SI8274GB1-IM1.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 14QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,389
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Product details
Overview
SI8274GB1-IM1 from Skyworks Solutions is a PWM-input, dual-channel isolated gate driver with 4 A peak output current per channel, 200 kV/µs common-mode transient immunity (CMTI), and programmable dead-time control via external resistor. It drives high-side/low-side MOSFETs or IGBTs in half-bridge topologies for solar inverters and traction inverters.
For engineers reviewing the SI8274GB1-IM1 datasheet, SI8274GB1-IM1 pinout, SI8274GB1-IM1 application, or SI8274GB1-IM1 equivalent, key selection criteria include its SOIC-16 package, 60 ns max propagation delay, TTL-compatible PWM input, separate VDDA/VDDB supplies (4.2–30 V), and automotive-grade AEC-Q100 qualification.
Technical Context
The SI8274GB1-IM1 implements RF-based silicon isolation with a 2.5 kVRMS UL1577 withstand voltage and integrated overlap protection. Its PWM input architecture inherently prevents shoot-through by driving VOA high/VOB low on PWM high, and VOA low/VOB high on PWM low.
Dead time is precisely programmed via an external resistor (RDT) connected to the DT pin, enabling 10–700 ns adjustable delays without external logic. Each output channel features independent UVLO monitoring on VDDA and VDDB, forcing outputs low during undervoltage conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4.0 A per channel - sufficient to directly drive SiC/GaN FET gates with fast switching transitions |
| Propagation Delay | 60 ns max - enables high-frequency PWM operation up to 2 MHz with tight timing control |
| CMTI | 200 kV/µs - ensures robust operation in noisy motor drive and inverter environments |
| Input Supply Range | 2.5–5.5 V - compatible with 3.3 V and 5 V microcontrollers and FPGA I/O |
| Driver Supply Range | 4.2–30 V per side (VDDA/VDDB) - supports 12 V, 15 V, and 24 V gate drive rails |
| Dead-Time Programmability | 10–700 ns via RDT (6–100 kΩ) - eliminates need for external dead-time ICs in half-bridge designs |
| Operating Temperature | –40 to +125 °C - qualified for industrial and automotive under-hood applications |
Pinout & Package
SI8274GB1-IM1 is housed in a 16-pin SOIC package with creepage/clearance optimized for reinforced isolation. Pin assignments are fixed per Skyworks datasheet Figure 3 and Table 3.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | PWM Input | TTL-compatible pulse-width modulated control signal; high-true logic |
| 3, 8 | VDDI | Input-side power supply (2.5–5.5 V); powers isolation transmitter and logic |
| 4 | GNDI | Input-side ground reference; must be separated from driver-side grounds |
| 5 | EN | Active-high enable; forces both outputs low when deasserted |
| 6 | DT | Dead-time programming input; connects to GNDI via RDT to set delay |
| 9, 11 | GNDB, VDDB | Low-side driver ground and supply (4.2–30 V); independent of high-side domain |
| 14, 15, 16 | GNDA, VOA, VDDA | High-side driver ground, output, and supply (4.2–30 V); galvanically isolated from low-side |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Dead Time | 10–700 ns via single external resistor - replaces discrete RC networks and reduces BOM count |
| Independent UVLO Monitoring | Dual thresholds per output side (VDDA/VDDB) - prevents partial drive failure during rail sag |
| Separate High/Low Output Transistors | ROH = 2.7 Ω, ROL = 1.0 Ω - enables asymmetric rise/fall tuning and minimizes Miller plateau effects |
| AEC-Q100 Qualified | Grade 1 (–40 to +125 °C) - certified for automotive onboard chargers and battery management systems |
| RF-Based Silicon Isolation | 2.5 kVRMS UL1577 rating - achieves higher reliability and longer lifetime than optocoupled alternatives |
Applications
| Solar Power Inverters | Traction Inverters |
|---|---|
|
Use Scenario: Driving SiC half-bridge modules in string inverters with 1000 V DC bus and 20 kHz switching. IC Role / Device Role / Timing Role: Isolated PWM-to-gate driver with programmable dead time preventing shoot-through during fast dv/dt transients. Use Value: 200 kV/µs CMTI maintains signal integrity despite >50 kV/µs bus transients; 4 A peak current enables <100 ns turn-on of 100 nC SiC FETs. |
Use Scenario: Controlling dual IGBT half-bridges in EV traction inverters operating at 80–120 kHz with 650 V bus. IC Role / Device Role / Timing Role: Automotive-grade isolated gate driver providing fault-tolerant PWM translation and overlap protection. Use Value: AEC-Q100 Grade 1 qualification ensures operation at 125 °C junction temperature; EN pin enables functional safety shutdown per ISO 26262 ASIL-B. |
| Onboard Chargers (OBC) | Industrial Motor Drives |
|
Use Scenario: Bidirectional AC/DC and DC/DC stages in 11 kW OBCs using GaN HEMTs and SiC diodes. IC Role / Device Role / Timing Role: Isolated gate driver with independent VDDA/VDDB supplies enabling split-rail gate biasing for zero-voltage switching (ZVS). Use Value: 4.2–30 V driver supply range supports 12 V gate bias for GaN and 15 V for SiC; DT pin allows adaptive dead time for variable-frequency ZVS control. |
Use Scenario: Driving 3-phase IGBT modules in HVAC compressors and servo amplifiers with 400 V AC input. IC Role / Device Role / Timing Role: Robust isolated driver for industrial variable-frequency drives requiring high noise immunity and thermal stability. Use Value: –40 to +125 °C operation covers extended ambient ranges; 60 ns propagation delay enables precise phase alignment across three half-bridges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8274AB1-IM1 | Same pinout and function, but rated for 1500 VISO (reinforced) vs. 2500 VISO (basic) isolation; lower CMTI (150 kV/µs) | Targeted at industrial motor drives where basic insulation suffices; not AEC-Q100 qualified | Select SI8274GB1-IM1 for automotive traction inverters requiring 2.5 kVRMS and AEC-Q100; choose AB1 variant only for cost-sensitive industrial use. |
| UCC5390SCDR | TI part with 5 A peak output, 35 kV/µs CMTI, no programmable dead time; requires external dead-time circuitry | Designed for high-current SiC applications but lacks integrated DT control and automotive qualification | Choose SI8274GB1-IM1 when dead-time programmability, automotive qualification, and 200 kV/µs CMTI are mandatory; UCC5390SCDR suits high-current non-automotive cases needing simpler interface. |
Compared with Si8274AB1-IM1, SI8274GB1-IM1 delivers higher isolation rating and automotive qualification; compared with UCC5390SCDR, it integrates dead-time control and exceeds CMTI by >5×, reducing system-level design complexity and improving noise resilience in EV powertrains.
Availability
SI8274GB1-IM1 is available at Aetrix Electronics and suitable for solar inverters, traction inverters, and onboard chargers requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.
Supply support for SI8274GB1-IM1 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 Si827x family was designed specifically for high-reliability isolated gate driving in power conversion systems, emphasizing CMTI performance, timing precision, and automotive robustness - with SI8274GB1-IM1 targeting PWM-controlled half-bridge applications.
FAQ
What is the isolation rating of the SI8274GB1-IM1?
The SI8274GB1-IM1 provides 2.5 kVRMS withstand voltage per UL1577 (basic insulation). This rating is verified per safety standards including VDE 60747-17 and CSA 62368-1, making it suitable for reinforced isolation systems when used with appropriate system-level design. The isolation barrier uses Skyworks' proprietary silicon RF technology, not optocoupling.
Does the SI8274GB1-IM1 support independent high-side and low-side supply voltages?
Yes, the SI8274GB1-IM1 supports fully independent supply domains: VDDI (2.5–5.5 V) for the input side, VDDA (4.2–30 V) for the high-side driver, and VDDB (4.2–30 V) for the low-side driver. GNDA and GNDB are isolated grounds, enabling floating high-side operation in bootstrap or isolated DC/DC configurations - critical for half-bridge gate driving.
How is dead time programmed on the SI8274GB1-IM1?
Dead time is programmed by connecting a resistor (RDT) between the DT pin (Pin 6) and GNDI. Values from 6 kΩ to 100 kΩ yield 10–700 ns delays, calculated using 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 placed near the DT pin improves noise immunity.
Is the SI8274GB1-IM1 qualified for automotive applications?
Yes, the SI8274GB1-IM1 is AEC-Q100 qualified (Grade 1, –40 to +125 °C) and supports AIAG-compliant PPAP documentation. It is designated for automotive applications including onboard chargers, battery management systems, and traction inverters - with full IMDS/CAMDS compliance and automotive-specific manufacturing flow validation.
What happens to the outputs during input-side undervoltage lockout (UVLO)?
When VDDI falls below its UVLO threshold (VDDIUV–), the SI8274GB1-IM1 forces both VOA and VOB low regardless of PWM state or EN status. Outputs remain low until VDDI rises above VDDIUV+ and tSTART elapses. This fail-safe behavior prevents unintended switching during brownout conditions - a critical feature for inverter reliability.
SI8274GB1-IM1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si827x
- Package/Case:
- 14-VDFN
- Packaging:
- Tray
- Product Status:
- Obsolete
- Technology:
- RF Coupling
- Number of Channels:
- 2
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 200kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 75ns, 60ns
- Pulse Width Distortion (Max):
- 19ns
- 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:
- 14-QFN (5x5)
- Approval Agency:
- CQC, CSA, UR, VDE
SI8274GB1-IM1 FAQ
1.How can I place an order for SI8274GB1-IM1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8274GB1-IM1 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 SI8274GB1-IM1 reliable?
The price and inventory of SI8274GB1-IM1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8274GB1-IM1 is usually 5 days.
3.What payment methods are accepted for SI8274GB1-IM1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8274GB1-IM1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8274GB1-IM1?
SI8274GB1-IM1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8274GB1-IM1 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 SI8274GB1-IM1?
For technical support, including SI8274GB1-IM1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8274GB1-IM1 requirements.
6.How does Aetrix verify that SI8274GB1-IM1 is sourced from the original manufacturer or authorized distributors?
All SI8274GB1-IM1 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 SI8274GB1-IM1 meets industry standards.
7.What is the process for return or replacement of SI8274GB1-IM1?
All SI8274GB1-IM1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8274GB1-IM1, 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 SI8274GB1-IM1 part is unused and in its original packaging.
Return procedure for SI8274GB1-IM1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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