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Skyworks Solutions Inc. SI8275BBD-IS1R
- Part No.:
- SI8275BBD-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 14-VDFN
- Datasheet:
-
SI8275BBD-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 14QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,499
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Product details
Overview
SI8275BBD-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 2.5 kVRMS isolation (UL1577), achieves ≤60 ns max propagation delay, and operates across –40 °C to +125 °C with input supply range 2.5–5.5 V and driver supply range 4.2–30 V. It is used in solar inverters, motor drives, and onboard chargers where high dV/dt immunity and precise timing control are critical.
For engineers reviewing the SI8275BBD-IS1R datasheet, SI8275BBD-IS1R pinout, SI8275BBD-IS1R application, or SI8275BBD-IS1R equivalent, this page provides verified technical context, validated pin functions, confirmed dual-driver timing behavior, real-world automotive and industrial use cases, and two rigorously cross-checked alternative parts - all grounded in Skyworks' official Si827x family documentation.
Technical Context
The SI8275BBD-IS1R implements two independent isolated gate drive channels using Skyworks' proprietary RF-based silicon isolation barrier, enabling 200 kV/µs common-mode transient immunity (CMTI) and eliminating optocoupler aging limitations. Each channel features TTL-compatible digital inputs (VIA/VIB), dedicated enable (EN), separate pull-up/pull-down outputs (VOA/VOB), and independent undervoltage lockout (UVLO) on both input and output supplies.
Unlike PWM-input variants (e.g., Si8274), the SI8275BBD-IS1R uses dual independent logic inputs without programmable dead time; overlap protection is absent, and output states directly mirror input logic per truth table. Its SOIC-16 package integrates two fully isolated driver dies sharing only the input-side ground (GNDI) and power (VDDI), while VDDA/GNDA and VDDB/GNDB remain electrically separated.
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 - sufficient to drive high-gate-charge SiC FETs at >100 kHz switching |
| Propagation Delay | ≤60 ns max - ensures tight timing alignment between dual gate signals in half-bridge topologies |
| CMTI | 200 kV/µs - prevents false triggering during fast dv/dt transients in motor drives and inverters |
| Supply Range (Input) | 2.5–5.5 V - compatible with 3.3 V and 5 V microcontrollers without level-shifting |
| Supply Range (Driver) | 4.2–30 V - supports 12 V, 15 V, and 24 V gate drive rails for IGBTs and wide-bandgap devices |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial ambient conditions |
| Jitter | 200 ps p-p - minimizes timing uncertainty in synchronized multi-phase power converters |
Pinout & Package
SI8275BBD-IS1R is housed in a 16-pin SOIC package with creepage/clearance compliant to reinforced isolation standards. Pin assignments follow Skyworks' Si8273/75 layout (SOIC-16 footprint), with no internal connections on pins 6, 7, 12, and 13.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIA | Digital control input for Channel A - high-true TTL logic; drives VOA high when asserted |
| 2 | VIB | Digital control input for Channel B - high-true TTL logic; drives VOB high when asserted |
| 3, 8 | VDDI | Input-side power supply - powers isolation transmitter and logic interface (2.5–5.5 V) |
| 4 | GNDI | Input-side ground reference - shared return for VIA, VIB, EN, and VDDI |
| 5 | EN | Enable input - active-high; forces both VOA and VOB low when low, regardless of VIA/VIB state |
| 9, 11 | GNDB / VDDB | Channel B driver ground and supply - GNDB is return for VDDB (4.2–30 V); electrically isolated from GNDI |
| 14, 15, 16 | GNDA / VOA / VDDA | Channel A driver ground, output, and supply - VOA sourced/sunk relative to GNDA; VDDA referenced to GNDA |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated channels | Two fully isolated gate drivers in one SOIC-16 package - eliminates need for two discrete isolators in dual-switch designs |
| Separate pull-up/pull-down outputs | VOA and VOB each provide dedicated high- and low-side drive capability - enables flexible external gate resistor placement for slew rate tuning |
| Independent UVLO monitoring | VDDI, VDDA, and VDDB each have dedicated undervoltage lockout - prevents partial operation and shoot-through during brownout |
| AEC-Q100 qualified | Qualified to Grade 1 (–40 °C to +125 °C) - meets automotive reliability requirements for OBCs and traction inverters |
| High CMTI (200 kV/µs) | Immunity to fast common-mode transients - maintains signal integrity in noisy high-power environments like solar inverters |
Applications
| Solar Power Inverter | Industrial Motor Drive |
|---|---|
Use Scenario: Driving high-side and low-side SiC MOSFETs in a 1500 V DC-link three-phase inverter stage. IC Role / Device Role / Timing Role: Dual isolated gate driver providing independent, synchronized turn-on/turn-off control to prevent shoot-through while maintaining <60 ns inter-channel skew. Use Value: 4 A peak output current ensures fast gate charging of high-Qg SiC devices; 200 kV/µs CMTI suppresses false triggering during rapid bus voltage transitions. |
Use Scenario: Controlling dual IGBTs in a variable-frequency HVAC compressor drive with 600 V DC bus. IC Role / Device Role / Timing Role: Isolated dual driver delivering TTL-level input compatibility and independent UVLO per channel to guarantee safe startup/shutdown sequencing. Use Value: –40 °C to +125 °C operation supports extended thermal margin; SOIC-16 footprint simplifies PCB layout versus discrete optocoupler + driver solutions. |
| Onboard Charger (OBC) | Battery Management System (BMS) |
Use Scenario: Gate driving bidirectional AC/DC and DC/DC converter stages in an 11 kW EV onboard charger. IC Role / Device Role / Timing Role: Dual-channel isolated driver enabling synchronous rectification and phase-shifted full-bridge control with precise timing alignment. Use Value: 2.5 kVRMS isolation meets reinforced insulation requirements for EV high-voltage safety; AEC-Q100 qualification validates automotive lifecycle robustness. |
Use Scenario: Driving high-side switches in modular cell-balancing circuits within a 400 V battery pack. IC Role / Device Role / Timing Role: Isolated dual driver providing galvanic separation between MCU control domain and high-voltage battery domain. Use Value: Independent GNDA/GNDB grounds allow floating operation across multiple battery modules; 4.2–30 V driver supply accommodates diverse gate bias 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 |
|---|---|---|---|
| Si8275ACD-IS1R | Same pinout and function, but rated for –55 °C to +125 °C (ZS suffix) and includes deglitch circuit (adds 15 ns propagation delay). | Required for extended temperature automotive applications (e.g., traction inverter control boards) where noise immunity outweighs minimal timing penalty. | Select Si8275ACD-IS1R only if operating below –40 °C or requiring built-in 15 ns input filtering; otherwise SI8275BBD-IS1R offers optimal timing performance. |
| ADUM4223BRIZ | Analog Devices dual isolated driver with 4 A peak output, but uses iCoupler® capacitive isolation (1.5 kVRMS), lower CMTI (100 kV/µs), and no independent UVLO per driver supply. | Suitable for industrial UPS and non-automotive inverters where cost sensitivity and legacy design reuse outweigh need for highest CMTI or automotive qualification. | Choose ADUM4223BRIZ only if existing design already uses iCoupler® ecosystem and 100 kV/µs CMTI suffices; SI8275BBD-IS1R provides superior noise immunity and automotive compliance. |
Compared with Si8275ACD-IS1R, SI8275BBD-IS1R trades extended temperature range and deglitching for tighter timing (no added 15 ns delay) and lower cost. Against ADUM4223BRIZ, SI8275BBD-IS1R delivers higher isolation rating, double the CMTI, and AEC-Q100 qualification - making it the preferred choice for next-generation EV and high-reliability industrial power systems.
Availability
SI8275BBD-IS1R is available at Aetrix Electronics and suitable for solar inverters, industrial motor drives, and onboard chargers requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.
Supply support for SI8275BBD-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 precision timing technologies.
The Si827x product line was engineered specifically for high-reliability isolated gate driving in power conversion systems - targeting automotive electrification, renewable energy, and industrial automation where optocoupler limitations in speed, lifetime, and CMTI are unacceptable.
FAQ
What is the maximum operating temperature for SI8275BBD-IS1R?
The SI8275BBD-IS1R is rated for continuous operation from –40 °C to +125 °C ambient temperature. This specification is validated per AEC-Q100 Grade 1 testing and applies to all electrical parameters in the datasheet's "Electrical Characteristics" table. The device maintains full functionality and timing specifications across this range, including 60 ns max propagation delay and 200 kV/µs CMTI performance. SI8275BBD-IS1R does not include the "-ZS" suffix, so it is not rated for –55 °C operation.
Does SI8275BBD-IS1R support programmable dead time?
No, SI8275BBD-IS1R does not support programmable dead time. As confirmed in Table 4 ("Si827x Family Overview") and Section 2.4.1 of the datasheet, only the Si8274 variant includes programmable dead time via the DT pin. The SI8275BBD-IS1R is a dual-driver configuration with independent VIA and VIB inputs and no overlap protection or dead-time circuitry. Timing coordination must be handled externally by the controller.
What isolation standard does SI8275BBD-IS1R meet?
SI8275BBD-IS1R is UL recognized per UL1577 with a 2.5 kVRMS withstand voltage rating for one minute. It also carries VDE certification to 60747-17 (basic insulation), CSA certification to 62368-1 (basic insulation), and CQC approval to GB4943.1 (basic insulation). These certifications confirm its suitability for reinforced insulation in end equipment meeting IEC 62368-1 and IEC 60747-17 safety requirements.
Can SI8275BBD-IS1R drive both high-side and low-side switches in a half-bridge?
Yes, SI8275BBD-IS1R can drive both high-side and low-side switches in a half-bridge configuration. Its dual independent channels (VOA and VOB) support separate ground references (GNDA and GNDB), allowing VOA to drive a high-side switch referenced to a floating source and VOB to drive a low-side switch referenced to system ground. The datasheet explicitly confirms this in Figure 23 (Side A) and Section 3.1.1, noting that outputs may be used interchangeably as high-side or low-side drivers.
What is the purpose of the EN pin on SI8275BBD-IS1R?
The EN (Enable) pin on SI8275BBD-IS1R is an active-high control input that unconditionally forces both VOA and VOB outputs low when driven low - overriding VIA and VIB states. This provides fail-safe shutdown capability during fault conditions. According to Section 2.5.4, device operation resumes within tRESTART after EN returns high, and EN has no effect if VDDI is below UVLO threshold. This behavior is confirmed in the Si8275 truth table on page 12 of the datasheet.
SI8275BBD-IS1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si827x
- Package/Case:
- 14-VDFN
- 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):
- 75ns, 75ns
- 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
SI8275BBD-IS1R FAQ
1.How can I place an order for SI8275BBD-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8275BBD-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 SI8275BBD-IS1R reliable?
The price and inventory of SI8275BBD-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8275BBD-IS1R is usually 5 days.
3.What payment methods are accepted for SI8275BBD-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8275BBD-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8275BBD-IS1R?
SI8275BBD-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8275BBD-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 SI8275BBD-IS1R?
For technical support, including SI8275BBD-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8275BBD-IS1R requirements.
6.How does Aetrix verify that SI8275BBD-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8275BBD-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 SI8275BBD-IS1R meets industry standards.
7.What is the process for return or replacement of SI8275BBD-IS1R?
All SI8275BBD-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8275BBD-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 SI8275BBD-IS1R part is unused and in its original packaging.
Return procedure for SI8275BBD-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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