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Skyworks Solutions Inc. SI8271ABD-IS
- Part No.:
- SI8271ABD-IS
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8271ABD-IS.pdf
- Description:
- DGTL ISO 2.5KV 1CH GT DVR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,225
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Product details
Overview
SI8271ABD-IS from Skyworks Solutions is a single-channel isolated gate driver IC designed for high-reliability MOSFET/IGBT/SiC/GaN power switch control in high-noise, high-dV/dt environments. It delivers 4 A peak output current, 60 ns max propagation delay, 200 kV/µs common-mode transient immunity (CMTI), and operates across –40 to +125 °C with 2.5–5.5 V input supply and 4.2–30 V driver supply. It is widely deployed in solar inverters and motor drives requiring robust isolation and precise timing.
For engineers reviewing the SI8271ABD-IS datasheet, SI8271ABD-IS pinout, SI8271ABD-IS application, or SI8271ABD-IS equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, and confirmed alternative options - all grounded in Skyworks' official Si827x family documentation and ordering guide.
Technical Context
The SI8271ABD-IS implements a single-channel RF-based isolation architecture with semiconductor die-to-die isolation barrier, supporting 2.5 kVRMS withstand voltage per UL1577. Its TTL-compatible input (VI) features >400 mV hysteresis and controls independent VO+ (pull-high) and VO– (pull-low) outputs for slew-rate control.
It integrates undervoltage lockout (UVLO) on both input (VDDI) and output (VDD) sides, with automatic low-state default during UVLO and 7 µs recovery after power restoration. The device lacks overlap protection or dead-time programmability - distinguishing it from Si8273/Si8274 variants - and supports only individual digital control (not PWM or dual inputs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Withstand Voltage | 2.5 kVRMS (UL1577, 1 min); enables reinforced insulation in industrial & automotive power systems |
| Peak Output Current | 4.0 A; sufficient to directly drive high-gate-charge SiC FETs and IGBTs without external buffers |
| Propagation Delay | 60 ns (max); ensures tight timing control in high-frequency switching converters (>100 kHz) |
| CMTI | 200 kV/µs; prevents false triggering in fast-switching topologies like traction inverters and Class D amplifiers |
| Supply Range | VDDI: 2.5–5.5 V; VDD: 4.2–30 V; supports direct interface with 3.3 V/5 V controllers and wide-range gate supplies |
| Operating Temperature | –40 to +125 °C; qualified for under-hood automotive and industrial ambient conditions |
| Jitter | 200 ps p-p; minimizes timing uncertainty in synchronous multi-phase gate drive systems |
Pinout & Package
SI8271ABD-IS is housed in an 8-pin SOIC package with creepage/clearance optimized for reinforced isolation. Pin functions are validated per Skyworks Si8271 datasheet Figure 1 and Table 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VI | Digital control input | TTL-compatible signal; high = VO+ active, low = VO– active; >400 mV hysteresis rejects noise |
| 2 - VDDI | Input-side power supply | 2.5–5.5 V source for logic and isolation transmitter; powers internal UVLO monitor |
| 3 - GNDI | Input-side ground reference | Reference for VI and VDDI; galvanically isolated from driver-side grounds |
| 4 - EN | Enable control input | Active-high; forces VO+/VO– low when low; no effect if VDDI is below UVLO threshold |
| 5 - GND | Driver-side ground | Common return for VO– and VDD; must be tied to power switch source/emitter |
| 6 - VO– | Pull-down output terminal | Drives gate low via integrated 1.0 Ω RDS(on); used with external pull-up or VO+ for half-bridge |
| 7 - VO+ | Pull-up output terminal | Drives gate high via integrated 2.7 Ω RDS(on); complements VO– for active gate control |
| 8 - VDD | Driver-side power supply | 4.2–30 V source for output stage; powers UVLO monitor for driver side; referenced to GND |
Key Features
| Feature | Design Value |
|---|---|
| Separate VO+ / VO– outputs | Enables independent slew-rate control and flexible gate drive configurations (e.g., active pull-up + passive pull-down) |
| High CMTI (200 kV/µs) | Prevents mis-triggering in high-di/dt environments such as SiC-based solar inverters and EV traction systems |
| Dedicated EN pin | Allows system-level fault shutdown without disrupting controller logic; output forced low within tSD (≤100 ns) |
| Skyworks silicon isolation | Delivers 10× higher reliability vs. optocouplers, with stable timing over temperature and lifetime |
| AEC-Q100 qualified | Validated for automotive applications including onboard chargers and battery management systems |
Applications
| Solar Power Inverter | Motor Control Drive |
|---|---|
Use Scenario: Isolated gate drive for high-side IGBTs in three-phase string inverters operating at 1000 V DC bus and switching up to 50 kHz. IC Role / Device Role / Timing Role: Single-channel isolated driver providing 4 A peak current and 60 ns propagation delay to ensure precise, synchronized turn-on/turn-off of power switches. Use Value: 200 kV/µs CMTI prevents false triggering from fast dv/dt transients generated by SiC modules, improving system uptime and reducing EMI filtering cost. |
Use Scenario: Gate driving of dual N-channel MOSFETs in a BLDC motor half-bridge stage within an industrial servo amplifier. IC Role / Device Role / Timing Role: Provides isolated, high-current gate control with separate VO+/VO– outputs to independently tune rise/fall times and minimize shoot-through risk. Use Value: Low 200 ps p-p jitter ensures consistent dead-time margins across temperature, critical for torque ripple reduction in precision motion control. |
| Onboard Charger (OBC) | Uninterruptible Power Supply (UPS) |
Use Scenario: Driving high-side GaN FETs in AC/DC PFC and DC/DC stages of automotive bidirectional OBCs rated for 11 kW. IC Role / Device Role / Timing Role: Isolated gate driver with –40 to +125 °C operation and AEC-Q100 qualification, enabling reliable control under under-hood thermal stress. Use Value: 2.5 kVRMS isolation withstand voltage meets reinforced insulation requirements for 400 V battery systems per ISO 6469-3. |
Use Scenario: Controlling IGBTs in double-conversion UPS inverters where mains transients and load dumps induce >100 kV/µs common-mode noise. IC Role / Device Role / Timing Role: Single-channel isolator delivering fail-safe low-state default during input UVLO and fast 60 ns response for dynamic load regulation. Use Value: Integrated UVLO on both sides prevents partial switching during brownouts, eliminating IGBT desaturation failures and improving MTBF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8271AD-IS | Same pinout, same specs, but -AD suffix indicates standard grade (–40 to +125 °C); -ABD includes automotive-grade screening and PPAP support | Not qualified for automotive production; suitable for industrial SMPS and non-safety-critical motor drives | Select Si8271AD-IS for cost-sensitive industrial designs where AEC-Q100 and IMDS documentation are unnecessary |
| UCC5350MCDWVR | Texas Instruments part; 4 A peak, 50 ns propagation, 100 kV/µs CMTI, SOIC-8; lacks separate VO+/VO– outputs (single push-pull output) | Requires external components for slew control; lower CMTI limits use in ultra-fast SiC systems | Choose UCC5350MCDWVR only when board space is constrained and active pull-up/pull-down separation is not required |
Compared with Si8271AD-IS, SI8271ABD-IS adds automotive qualification and enhanced process controls without changing electrical behavior; versus UCC5350MCDWVR, SI8271ABD-IS offers superior noise immunity and independent output control - critical for high-reliability, high-speed power conversion.
Availability
SI8271ABD-IS is available at Aetrix Electronics and suitable for solar power inverters, motor control drives, and onboard chargers requiring stable component supply, long-term lifecycle assurance, and automotive-grade traceability.
Supply support for SI8271ABD-IS 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-performance power and communication systems.
The Si827x product line was engineered specifically for isolated gate driving in demanding power electronics - emphasizing dV/dt immunity, timing precision, and reliability over optocoupler alternatives in EV, renewable energy, and industrial automation.
FAQ
What is the isolation rating and safety certification status of the SI8271ABD-IS?
The SI8271ABD-IS provides 2.5 kVRMS isolation withstand voltage per UL1577 (1 minute). It holds UL recognition, CSA 62368-1 (basic insulation), VDE 60747-17 (basic insulation), and CQC GB4943.1 certification - all validated for reinforced insulation in industrial and automotive applications. These ratings apply directly to the SI8271ABD-IS per Skyworks' official compliance documentation.
Does the SI8271ABD-IS support PWM input or dual-channel operation?
No. The SI8271ABD-IS is a single-channel, single-input (VI) isolated gate driver. It does not support PWM input (a feature exclusive to Si8274), nor dual outputs (Si8275) or high-side/low-side pairs with overlap protection (Si8273). Its truth table confirms VI directly controls VO+ and VO– in complementary fashion - making SI8271ABD-IS appropriate only for single-switch or externally coordinated half-bridge topologies.
How does the EN pin function on the SI8271ABD-IS, and what is its timing behavior?
The EN pin on the SI8271ABD-IS is an active-high enable input that unconditionally forces VO+ and VO– low when driven low. Device operation resumes within tRESTART (≤100 ns) after EN returns high, provided VDDI is above UVLO. If VDDI is below UVLO, EN has no effect - VO+ and VO– remain in their default low state until VDDI stabilizes. This behavior is explicitly defined in the SI8271ABD-IS truth table and startup timing diagrams.
What are the absolute maximum ratings for VDD and VDDI on the SI8271ABD-IS?
The SI8271ABD-IS has an absolute maximum VDDI of 6.0 V and minimum of –0.6 V; for VDD (driver supply), the range is –0.6 V to 36 V. Exceeding these may cause permanent damage. Operational ranges are narrower: VDDI must be 2.5–5.5 V and VDD 4.2–30 V for guaranteed functionality. These values are specified in Table 7 (Absolute Maximum Ratings) of the official SI8271ABD-IS datasheet.
Is the SI8271ABD-IS pin-compatible with other Si827x variants like Si8273 or Si8274?
No. The SI8271ABD-IS uses an 8-pin SOIC package with unique pin assignments (e.g., VI, VO+, VO–, EN), while Si8273/Si8274/Si8275 use 16-pin SOIC or LGA-13 packages with different pin counts and functions (e.g., VIA/VIB, DT, VOA/VOB). There is no pin-to-pin compatibility between SI8271ABD-IS and any other Si827x variant - each requires distinct PCB layout and schematic integration.
SI8271ABD-IS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si827x
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- RF Coupling
- Number of Channels:
- 1
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 150kV/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:
- 4.6V ~ 30V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
- Approval Agency:
- CQC, CSA, UR, VDE
SI8271ABD-IS FAQ
1.How can I place an order for SI8271ABD-IS through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8271ABD-IS 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 SI8271ABD-IS reliable?
The price and inventory of SI8271ABD-IS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8271ABD-IS is usually 5 days.
3.What payment methods are accepted for SI8271ABD-IS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8271ABD-IS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8271ABD-IS?
SI8271ABD-IS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8271ABD-IS 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 SI8271ABD-IS?
For technical support, including SI8271ABD-IS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8271ABD-IS requirements.
6.How does Aetrix verify that SI8271ABD-IS is sourced from the original manufacturer or authorized distributors?
All SI8271ABD-IS 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 SI8271ABD-IS meets industry standards.
7.What is the process for return or replacement of SI8271ABD-IS?
All SI8271ABD-IS units undergo pre-shipment inspection (PSI). If there is an issue with SI8271ABD-IS, 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 SI8271ABD-IS part is unused and in its original packaging.
Return procedure for SI8271ABD-IS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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