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Skyworks Solutions Inc. SI8275DB-IS1R
- Part No.:
- SI8275DB-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8275DB-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,956
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Product details
Overview
SI8275DB-IS1R from Skyworks Solutions is a dual-channel isolated gate driver IC designed for high-reliability MOSFET/IGBT/SiC/GaN half-bridge and dual-switch applications. It delivers 4 A peak output current per channel, supports 4.2–30 V driver supply voltage, features 60 ns max propagation delay, 200 kV/µs CMTI, and operates across –40 to +125 °C. It is used in solar inverters, traction inverters, and onboard chargers where robust isolation and precise timing are critical.
For engineers reviewing the SI8275DB-IS1R datasheet, SI8275DB-IS1R pinout, SI8275DB-IS1R application, or SI8275DB-IS1R equivalent, this page provides verified functional identity, SOIC-16 package mapping, dual independent digital input behavior (VIA/VIB), UVLO-protected outputs, and validated automotive-grade alternatives aligned with AEC-Q100 qualification and UL 2500 VRMS isolation.
Technical Context
The SI8275DB-IS1R implements two independent RF-based isolation channels using Skyworks' proprietary silicon isolation barrier, each supporting up to 2.5 kVRMS withstand voltage per UL1577. Each channel features separate pull-up/pull-down outputs (VOA/VOB) with low RDS(ON) (2.7 Ω high-side, 1.0 Ω low-side) and dedicated enable control.
It operates with TTL-compatible inputs (>400 mV hysteresis), supports independent UVLO monitoring on VDDI, VDDA, and VDDB, and defaults outputs low during input-side undervoltage. No dead-time programming or overlap protection is implemented - unlike Si8273/Si8274 - confirming its role as a true dual independent driver.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Withstand Voltage | 2500 VRMS 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 - ensures tight timing control in >100 kHz switching topologies |
| CMTI | 200 kV/µs - maintains signal integrity in high-dV/dt motor drive and inverter environments |
| Supply Range | VDDI: 2.5–5.5 V; VDDA/VDDB: 4.2–30 V - supports wide-input microcontrollers and diverse gate drive rail voltages |
| Operating Temperature | –40 to +125 °C - qualified for under-hood automotive and industrial ambient conditions |
| AEC-Q100 Grade | Qualified - meets stress test requirements for automotive power electronics |
Pinout & Package
SI8275DB-IS1R is housed in a 16-pin SOIC package with creepage/clearance optimized for reinforced isolation. Pin assignments follow the Si8273/75 layout (Table 2, datasheet p.3), with no internal connection on pins 6, 7, 12, and 13.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIA | Digital control input for Channel A - TTL-compatible, >400 mV hysteresis, directly drives VOA |
| 2 | VIB | Digital control input for Channel B - independent of VIA; enables asynchronous dual-switch control |
| 3,8 | VDDI | Input-side logic supply - powers isolation transmitter and input circuitry (2.5–5.5 V) |
| 4 | GNDI | Input-side reference ground - galvanically isolated from driver-side grounds |
| 5 | EN | Global enable - forces both VOA and VOB low when pulled low; inactive if VDDI is below UVLO |
| 9,11 | GNDB / VDDB | Driver-side ground and supply for Channel B - separate from Channel A's GNDA/VDDA |
| 14,15,16 | GNDA / VOA / VDDA | Driver-side ground, output, and supply for Channel A - supports floating high-side configuration |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent gate drivers | No shared timing or overlap logic - enables fully asynchronous control of two switches |
| Separate pull-up/pull-down outputs | VOA and VOB each provide dedicated high- and low-side drive capability for flexible PCB layout |
| Independent UVLO per supply domain | VDDI, VDDA, and VDDB each monitored - prevents erroneous output states during partial power loss |
| Skyworks silicon isolation | 2.5 kVRMS UL rating, 200 kV/µs CMTI, <200 ps jitter - superior noise immunity vs. optocouplers |
| AEC-Q100 qualified | Validated for automotive powertrain use including OBC, BMS, and traction inverters |
Applications
| Solar Power Inverter | Traction Inverter |
|---|---|
Use Scenario: Driving high-side and low-side SiC MOSFETs in a 1500 V DC-link half-bridge stage. IC Role / Device Role / Timing Role: Dual isolated gate driver providing independent, synchronized turn-on/turn-off control with <60 ns skew. Use Value: Enables fast switching with minimal shoot-through risk due to guaranteed low propagation delay and channel independence. |
Use Scenario: Controlling parallel IGBT modules in electric vehicle main inverter stacks. IC Role / Device Role / Timing Role: Isolated dual driver delivering 4 A peak current to manage high gate charge at 10–20 kHz PWM frequencies. Use Value: Supports AEC-Q100-compliant thermal cycling and long-term reliability under high-voltage transients (200 kV/µs CMTI). |
| Onboard Charger (OBC) | Battery Management System (BMS) |
Use Scenario: Driving AC/DC PFC and DC/DC LLC stages in bidirectional OBC designs. IC Role / Device Role / Timing Role: Dual-channel isolator enabling independent control of boost and synchronous rectifier FETs. Use Value: Wide 4.2–30 V driver supply range accommodates variable gate drive rails across topology stages. |
Use Scenario: Isolating gate signals for cell-balancing FETs and contactor drivers in high-voltage battery packs. IC Role / Device Role / Timing Role: Reinforced-isolation dual driver ensuring safe separation between low-voltage MCU and 800 V+ battery domains. Use Value: UL 2500 VRMS rating and –40 to +125 °C operation meet ASIL-B system-level safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8275AD-IS1R | Same pinout and function; differs only in deglitch feature (15 ns internal filter) and slightly higher IDDQ (8.5 mA vs. 7.9 mA) | Preferred where EMI-heavy environments require additional noise immunity on digital inputs | Select Si8275AD-IS1R if system-level testing shows susceptibility to sub-20 ns input glitches |
| UCC5390SCDR | TI part with integrated Miller clamp, 10 A peak drive, but only 1500 VRMS isolation and no AEC-Q100 grade | Used in industrial UPS and motor drives where automotive qualification is not required | Choose UCC5390SCDR only for cost-sensitive non-automotive designs needing higher peak current |
Compared with SI8275DB-IS1R, Si8275AD-IS1R adds input deglitching at minor quiescent current cost, while UCC5390SCDR trades isolation robustness and automotive qualification for higher drive strength - making SI8275DB-IS1R optimal for AEC-Q100-compliant, high-CMTI dual-drive applications.
Availability
SI8275DB-IS1R is available at Aetrix Electronics and suitable for solar inverters, traction inverters, and onboard chargers requiring stable component supply, automotive-grade traceability, and long-lifecycle support.
Supply support for SI8275DB-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 developed to replace optocoupled gate drivers in high-reliability power conversion systems, emphasizing CMTI performance, timing precision, and AEC-Q100 compliance for automotive and industrial markets.
FAQ
What is the isolation rating of the SI8275DB-IS1R?
The SI8275DB-IS1R provides 2500 VRMS isolation per UL1577, achieved via Skyworks' proprietary silicon isolation barrier. This rating applies across the full operating temperature range (–40 to +125 °C) and supports reinforced insulation in systems with ≤1000 V DC bus voltages. The device also meets VDE 60747-17 and CSA 62368-1 basic insulation standards.
Does the SI8275DB-IS1R support dead-time programming?
No, the SI8275DB-IS1R does not include dead-time programming. Unlike the Si8274 (PWM-input) or Si8273 (high-side/low-side with overlap protection), the SI8275DB-IS1R implements two fully independent digital input channels (VIA and VIB) with no internal logic linking their outputs. Dead time must be generated externally by the controller.
What is the maximum gate drive supply voltage for SI8275DB-IS1R?
The SI8275DB-IS1R supports a driver-side supply voltage range of 4.2 V to 30 V on both VDDA and VDDB. Absolute maximum rating is 36 V, but operation above 30 V is not characterized or guaranteed. For SiC FETs requiring 20–25 V gate bias, this range provides sufficient headroom with margin.
Is SI8275DB-IS1R pin-compatible with other Si827x variants?
SI8275DB-IS1R shares the same SOIC-16 pinout with Si8273 and Si8274, but functional differences prevent drop-in replacement. Specifically, Si8273 includes overlap protection, Si8274 accepts PWM input and supports dead-time programming, while SI8275DB-IS1R offers dual independent inputs - requiring matching controller logic.
How does the enable pin (EN) function on SI8275DB-IS1R?
The EN pin on SI8275DB-IS1R is an active-high global enable: when pulled low, it forces both VOA and VOB outputs low regardless of VIA/VIB states. The enable function is only active when VDDI is above its UVLO threshold (typically >2.3 V); if VDDI is unpowered or below UVLO, outputs remain low independently of EN state.
SI8275DB-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):
- 150kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 60ns, 60ns
- Pulse Width Distortion (Max):
- 8ns
- 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
SI8275DB-IS1R FAQ
1.How can I place an order for SI8275DB-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8275DB-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 SI8275DB-IS1R reliable?
The price and inventory of SI8275DB-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8275DB-IS1R is usually 5 days.
3.What payment methods are accepted for SI8275DB-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8275DB-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8275DB-IS1R?
SI8275DB-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8275DB-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 SI8275DB-IS1R?
For technical support, including SI8275DB-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8275DB-IS1R requirements.
6.How does Aetrix verify that SI8275DB-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8275DB-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 SI8275DB-IS1R meets industry standards.
7.What is the process for return or replacement of SI8275DB-IS1R?
All SI8275DB-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8275DB-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 SI8275DB-IS1R part is unused and in its original packaging.
Return procedure for SI8275DB-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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