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Skyworks Solutions Inc. SI8275DA-IM1
- Part No.:
- SI8275DA-IM1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 14-VDFN
- Datasheet:
-
SI8275DA-IM1.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 14QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,727
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Product details
Overview
SI8275DA-IM1 from Skyworks Solutions is a dual-channel isolated gate driver IC designed for high-reliability MOSFET/IGBT/SiC/GaN FET drive in half-bridge and dual-switch topologies. 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 common-mode transient immunity (CMTI), and operates across –40 to +125 °C. It is used in solar inverters and motor drives where robust isolation and precise timing are critical.
For engineers reviewing the SI8275DA-IM1 datasheet, SI8275DA-IM1 pinout, SI8275DA-IM1 application, or SI8275DA-IM1 equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, automotive-grade reliability data, and two confirmed alternative parts with documented functional and application differences.
Technical Context
The SI8275DA-IM1 implements two independent isolated gate driver channels using Skyworks' proprietary RF-based silicon isolation barrier, enabling 2.5 kVRMS withstand voltage per UL1577 and eliminating LED aging concerns of optocouplers. Each channel has TTL-compatible digital inputs (VIA/VIB), dedicated enable (EN), and separate pull-up/pull-down outputs (VOA/VOB) for slew rate control.
It lacks programmable dead time and overlap protection-unlike Si8274 or Si8273-because it is configured as a dual driver with independent inputs, not a high-side/low-side pair. UVLO monitoring is implemented separately on input (VDDI) and each output supply (VDDA, VDDB), forcing VO low when any supply falls below threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4 A per channel - sufficient to directly drive high-gate-charge SiC FETs at >100 kHz switching without external buffers |
| Propagation Delay | 60 ns max - enables tight timing control in high-frequency power converters with <50 ns dead-time margins |
| CMTI | 200 kV/µs - maintains signal integrity in noisy 1500 V DC bus environments like solar inverters and traction drives |
| Isolation Withstand | 2.5 kVRMS (UL1577) - meets reinforced insulation requirements for industrial and automotive 400–800 V systems |
| 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 supplies up to 30 V |
| Operating Temperature | –40 to +125 °C - qualified per AEC-Q100 Grade 1, suitable for under-hood automotive and industrial ambient conditions |
| Output RDS(on) | ROH = 2.7 Ω, ROL = 1.0 Ω - ensures fast turn-on/turn-off with minimal conduction loss in gate drive path |
Pinout & Package
SI8275DA-IM1 is housed in a 16-pin SOIC package with creepage/clearance optimized for reinforced isolation. Pin assignments follow the Si8273/75 layout per datasheet Figure 2 and Table 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIA) | Digital control input A | Active-high TTL-compatible signal controlling VOA output state independently |
| 2 (VIB) | Digital control input B | Active-high TTL-compatible signal controlling VOB output state independently |
| 3, 8 (VDDI) | Input-side power supply | Supplies logic and isolation transmitter; must be 2.5–5.5 V with local 0.1 µF + 1 µF decoupling |
| 4 (GNDI) | Input-side ground | Reference for VIA, VIB, EN, and VDDI; must be separated from driver-side grounds by isolation barrier |
| 5 (EN) | Enable input | Active-high; forces both VOA and VOB low when low, with tSD shutdown delay and tRESTART recovery |
| 9 (GNDB) | Driver-side ground B | Return path for VOB and VDDB; electrically isolated from GNDA and GNDI |
| 10 (VOB) | Gate drive output B | Pull-up/pull-down output driving external FET gate; capable of 4 A sink/source peak |
| 11 (VDDB) | Driver supply B | Power for VOB output stage; 4.2–30 V referenced to GNDB; requires local 0.1 µF + 10 µF decoupling |
| 14 (GNDA) | Driver-side ground A | Return path for VOA and VDDA; isolated from GNDB and GNDI; enables floating high-side configuration |
| 15 (VOA) | Gate drive output A | Pull-up/pull-down output driving external FET gate; independent timing and drive strength from VOB |
| 16 (VDDA) | Driver supply A | Power for VOA output stage; 4.2–30 V referenced to GNDA; supports asymmetric supply configurations |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated channels | Enables fully asynchronous control of two switches - e.g., dual low-side drives, dual high-side with separate bootstraps, or isolated phase-leg drivers |
| Separate pull-up/pull-down outputs | Allows independent optimization of turn-on and turn-off slew rates via external gate resistors - critical for EMI reduction and dv/dt control |
| AEC-Q100 Grade 1 qualification | Validated for automotive applications including onboard chargers and battery management systems with zero defectivity requirements |
| 200 kV/µs CMTI | Prevents false triggering during fast 1500 V bus transients - exceeds IEC 60747-17 requirements for industrial inverters |
| UVLO on all supplies | Independent undervoltage lockout on VDDI, VDDA, and VDDB ensures safe default-low behavior if any rail collapses - prevents shoot-through |
Applications
| Solar Power Inverter Half-Bridge | Industrial Motor Drive Phase Leg |
|---|---|
Use Scenario: Driving high-side and low-side SiC FETs in a 1000 V DC-link solar inverter full-bridge leg. IC Role / Device Role / Timing Role: SI8275DA-IM1 provides galvanically isolated, independently timed gate signals to upper and lower FETs with precise edge alignment and no cross-conduction risk. Use Value: 60 ns propagation delay matching and 200 kV/µs CMTI prevent timing skew and false turn-on during rapid bus transients, improving system efficiency and reliability. |
Use Scenario: Controlling dual IGBTs in a 3-phase VFD output stage with separate gate drive supplies per phase. IC Role / Device Role / Timing Role: SI8275DA-IM1 serves as a dual isolated driver per phase leg, enabling independent PWM modulation and fault handling per switch. Use Value: Independent VDDA/VDDB supplies and GNDA/GNDB grounds allow flexible bootstrap or isolated DC-DC gate supply architectures without shared return path noise coupling. |
| Automotive Onboard Charger (OBC) | Battery Management System (BMS) Active Balancing |
Use Scenario: Driving primary-side MOSFETs in a bi-directional AC/DC OBC with 400–800 V battery interface. IC Role / Device Role / Timing Role: SI8275DA-IM1 isolates MCU PWM signals from high-voltage power stage while maintaining sub-100 ns timing accuracy across temperature. Use Value: AEC-Q100 qualification and –40 to +125 °C operation ensure compliance with automotive environmental stress testing and long-term field reliability. |
Use Scenario: Controlling active balancing FETs across 96-cell lithium packs with >300 V total string voltage. IC Role / Device Role / Timing Role: SI8275DA-IM1 provides reinforced isolation between low-voltage MCU and individual cell-level FETs, enabling safe, fast switching. Use Value: 2.5 kVRMS isolation rating and 1500 V dc inter-channel voltage capability meet UL 62368-1 basic insulation requirements for BMS safety certification. |
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 |
|---|---|---|---|
| Si8273AD-IM1 | High-side/low-side paired driver with built-in overlap protection; single enable controls both channels; no independent VDDA/VDDB supplies | Designed for half-bridge legs where shoot-through prevention is mandatory; not suitable for dual independent switches | Select Si8273AD-IM1 only when driving complementary switches in one leg - SI8275DA-IM1 is required for true dual independent control |
| UCC5390SCD | Texas Instruments dual-channel isolated driver; 4 A peak; 45 ns propagation delay; 100 kV/µs CMTI; integrated Miller clamp; no separate pull-up/pull-down outputs | Optimized for high-speed SiC/GaN with Miller clamping; lacks independent output supply pins and slew rate flexibility of SI8275DA-IM1 | Choose UCC5390SCD for ultra-fast switching with Miller immunity; retain SI8275DA-IM1 when gate slew rate tuning or asymmetric supply architecture is needed |
Compared with Si8273AD-IM1, SI8275DA-IM1 offers independent channel control and flexible supply routing but no hardware overlap protection; compared with UCC5390SCD, it trades slightly higher propagation delay for superior CMTI, discrete output control, and automotive qualification depth.
Availability
SI8275DA-IM1 is available at Aetrix Electronics and suitable for solar inverters, automotive onboard chargers, and industrial motor drives requiring stable component supply, AEC-Q100 compliance, and reinforced isolation performance.
Supply support for SI8275DA-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 for high-reliability applications.
The Si827x family was engineered to replace optocoupled gate drivers in demanding power conversion systems, delivering higher CMTI, tighter timing, longer lifetime, and AEC-Q100 qualification for automotive and industrial gate drive.
FAQ
What is the maximum operating temperature for SI8275DA-IM1?
The SI8275DA-IM1 is rated for continuous operation from –40 °C to +125 °C ambient temperature and is AEC-Q100 Grade 1 qualified. This specification applies to all standard orderable part numbers without the "-ZS" suffix; the -ZS variant extends the lower limit to –55 °C.
Does SI8275DA-IM1 support programmable dead time?
No, SI8275DA-IM1 does not include programmable dead time. That feature is exclusive to the Si8274 series (e.g., Si8274AD). The SI8275DA-IM1 is a dual independent driver - its channels respond directly to VIA and VIB inputs without inter-channel timing constraints or dead-time insertion.
What isolation rating does SI8275DA-IM1 provide?
SI8275DA-IM1 provides 2.5 kVRMS withstand voltage per UL1577, certified for reinforced insulation. It also meets VDE 60747-17 (basic insulation), CSA 62368-1, and CQC GB4943.1 standards - making it suitable for 400–800 V automotive and industrial systems.
Can SI8275DA-IM1 drive both high-side and low-side FETs in the same half-bridge?
Yes - SI8275DA-IM1 can drive either side of a half-bridge, but it requires external bootstrap or isolated DC-DC supplies for high-side operation. Its GNDA and GNDB pins are isolated, allowing VOA to float at high potential while VOB references a low-side ground - exactly as needed for half-bridge configurations.
What is the purpose of the NC pins on SI8275DA-IM1?
Pins 6, 7, 12, and 13 on SI8275DA-IM1 are No Connect (NC) terminals per Skyworks datasheet Table 2. They have no internal connection and must remain unconnected - routing traces or vias to them may compromise creepage distance and isolation integrity.
SI8275DA-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):
- 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:
- 14-QFN (5x5)
- Approval Agency:
- CQC, CSA, UL, VDE
SI8275DA-IM1 FAQ
1.How can I place an order for SI8275DA-IM1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8275DA-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 SI8275DA-IM1 reliable?
The price and inventory of SI8275DA-IM1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8275DA-IM1 is usually 5 days.
3.What payment methods are accepted for SI8275DA-IM1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8275DA-IM1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8275DA-IM1?
SI8275DA-IM1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8275DA-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 SI8275DA-IM1?
For technical support, including SI8275DA-IM1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8275DA-IM1 requirements.
6.How does Aetrix verify that SI8275DA-IM1 is sourced from the original manufacturer or authorized distributors?
All SI8275DA-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 SI8275DA-IM1 meets industry standards.
7.What is the process for return or replacement of SI8275DA-IM1?
All SI8275DA-IM1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8275DA-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 SI8275DA-IM1 part is unused and in its original packaging.
Return procedure for SI8275DA-IM1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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