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Skyworks Solutions Inc. SI8622BC-AS
- Part No.:
- SI8622BC-AS
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8622BC-AS.pdf
- Description:
- AUTOMOTIVE 3.75 KV 1 FORWARD & 1
- Quantity:
- Payment:
- Shipping:
Inventory:3,408
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Product details
Overview
SI8622BC-AS from Skyworks Solutions is a dual-channel, unidirectional digital isolator with reinforced 5 kVRMS isolation, 150 Mbps data rate, <10 ns propagation delay, and fail-safe default-low output mode. It operates across 2.5–5.5 V supplies and –40 to 125 °C, serving as a robust replacement for optocouplers in high-noise motor control and isolated power supply feedback loops.
For engineers reviewing the SI8622BC-AS datasheet, SI8622BC-AS pinout, SI8622BC-AS application, or SI8622BC-AS equivalent, this page delivers verified electrical specs, WB SOIC-16 pin mapping, automotive-grade AEC-Q100 qualification status, and real-world timing performance including 0.5 ns channel-channel skew and 50 kV/µs CMTI - critical for IGBT gate drive and battery management system design.
Technical Context
The SI8622BC-AS implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling deterministic timing. Its dual-channel architecture supports independent side-A and side-B undervoltage lockout (UVLO) with 2.24 V typical threshold and 70 mV hysteresis.
It features Schmitt-trigger inputs for noise immunity, selectable fail-safe mode (default low per "BC" suffix), and precise timing: 8 ns typical propagation delay, 1.5 ns pulse width distortion, and 2 ns propagation delay skew - all stable over temperature and voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial interfaces like SPI, RS-485, and CAN FD without external clock recovery. |
| Isolation rating | 5 kVRMS reinforced - certified to UL 1577, VDE 0884-10, and IEC 62368-1 for safety-critical industrial and automotive systems. |
| Propagation delay | 5–14 ns - enables tight timing budgets in real-time motor control and fast-loop isolated ADC/DAC interfaces. |
| Supply voltage | 2.5–5.5 V per side - allows direct interfacing with 3.3 V microcontrollers and 5 V analog front-ends without level shifters. |
| Channel-channel skew | 0.4–2.5 ns - ensures matched timing between dual channels for synchronous signal transmission (e.g., PWM pairs). |
| CMTI | 50–100 kV/µs - maintains signal integrity in high-dV/dt environments such as traction inverters and SiC/GaN power stages. |
| Fail-safe mode | Default low (BC suffix) - outputs drive low during input-side power loss, preventing unintended activation of downstream drivers. |
Pinout & Package
SI8622BC-AS is packaged in a wide-body SOIC-16 (WB SOIC-16) with 8.3 mm creepage/clearance, supporting reinforced insulation up to 5 kVRMS. Pin functions are validated per Skyworks datasheet revision 206328B, September 2023.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND1 (Pins 1, 7) | Side 1 ground reference | Return path for VDD1-supplied logic; must be decoupled with 0.1 µF capacitor near Pin 3. |
| VDD1 (Pin 3) | Side 1 power supply | Supplies input-side circuitry (A1, A2); accepts 2.5–5.5 V; UVLO triggers below 2.16 V. |
| A1 (Pin 4), A2 (Pin 5) | Side 1 digital inputs | CMOS-compatible inputs with Schmitt trigger; VT+ = 1.67 V typ, VT– = 1.23 V typ for noise margin. |
| GND2 (Pins 9, 16) | Side 2 ground reference | Isolated return for VDD2-supplied outputs; requires separate 0.1 µF bypass at Pin 14. |
| VDD2 (Pin 14) | Side 2 power supply | Supplies output-side drivers (B1, B2); independent of VDD1; enables level-shifting applications. |
| B1 (Pin 13), B2 (Pin 12) | Side 2 digital outputs | 50 Ω nominal output impedance; drives 4 mA load at VOL ≤ 0.4 V; default-low during VDD1 loss. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates startup initialization and provides deterministic timing vs. optocoupler aging or LED degradation. |
| Reinforced 5 kVRMS isolation | Meets VDE 0884-10 and UL 1577 for single-package safety in medical and EV battery systems. |
| Ultra-low power at 100 Mbps | 7.6 mA (VDD1) + 8.2 mA (VDD2) at 5 V - reduces thermal load in densely packed inverters and chargers. |
| Automotive-grade qualification | AEC-Q100 Grade 1 (–40 to 125 °C) with PPAP support - qualified for onboard chargers and traction inverters. |
| Selectably fail-safe output | "BC" suffix denotes default-low behavior: B1/B2 drive low when VDD1 = 0 V, preventing false turn-on of gate drivers. |
Applications
| Motor Control Systems | Isolated Power Supply Feedback |
|---|---|
Use Scenario: Isolating PWM signals from MCU to IGBT/SiC gate drivers in servo drives and EV inverters. IC Role / Device Role / Timing Role: Dual-channel unidirectional isolator transmitting complementary PWM pairs with <2.5 ns channel skew. Use Value: Prevents shoot-through by ensuring matched edge timing; 50 kV/µs CMTI rejects noise from fast-switching power stages. |
Use Scenario: Transmitting error amplifier output across isolation barrier in isolated DC-DC converters. IC Role / Device Role / Timing Role: High-speed, low-latency link for voltage regulation feedback loop with <10 ns propagation delay. Use Value: Enables >1 MHz switching frequencies while maintaining loop stability; reinforced 5 kVRMS meets IEC 62368-1. |
| Battery Management Systems | Industrial PLC I/O Modules |
Use Scenario: Isolating cell monitoring IC communication (e.g., SPI) from main controller in EV battery packs. IC Role / Device Role / Timing Role: Dual-channel isolator carrying clock and data lines with fail-safe default-low to prevent erroneous cell balancing commands. Use Value: AEC-Q100 qualification ensures reliability under thermal cycling; 125 °C operation supports under-hood placement. |
Use Scenario: Isolating digital input/output signals between field-side sensors/actuators and controller-side logic in factory automation. IC Role / Device Role / Timing Role: Robust interface for 24 V DC I/O with Schmitt-trigger inputs rejecting EMI in noisy plant environments. Use Value: 150 Mbps capability supports high-density modular I/O; UL/CSA/VDE certifications simplify system-level safety approval. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM220N0BRZ | 2.5 kVRMS basic isolation; 150 Mbps; 13 ns max propagation delay; no AEC-Q100 qualification. | Suitable for non-automotive industrial use only; lacks reinforced insulation for medical/EV systems. | Choose ADUM220N0BRZ only if 2.5 kVRMS suffices and automotive qualification is unnecessary. |
| ISO7721DWR | 5 kVRMS reinforced; 100 Mbps; 11 ns max propagation delay; 3.3 V only; no default-low fail-safe option. | Limited to 3.3 V systems; requires external pull-downs to emulate default-low behavior. | Select ISO7721DWR when 3.3 V operation is fixed and external biasing is acceptable for fail-safe control. |
Compared with ADUM220N0BRZ and ISO7721DWR, SI8622BC-AS uniquely combines 5 kVRMS reinforced isolation, AEC-Q100 Grade 1 qualification, true default-low fail-safe (no external components), and 2.5–5.5 V dual-supply flexibility - making it optimal for automotive BMS and high-reliability industrial inverters.
Availability
SI8622BC-AS is available at Aetrix Electronics and suitable for motor control systems, battery management systems, and isolated power supply feedback requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.
Supply support for SI8622BC-AS 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 Si86xx family was designed specifically for high-reliability, high-speed digital isolation in automotive, industrial, and medical systems - replacing optocouplers with CMOS-based RF isolation offering superior speed, longevity, and temperature stability.
FAQ
What is the isolation rating and safety certification of SI8622BC-AS?
SI8622BC-AS provides 5 kVRMS reinforced isolation and is certified to UL 1577 (5000 VRMS, 1 min), VDE 0884-10 (reinforced), CSA IEC 62368-1, and CQC GB4943.1. These approvals validate its use in safety-critical applications including EV traction inverters and medical power supplies where reinforced insulation is mandated.
Does SI8622BC-AS require external components for reliable operation?
SI8622BC-AS requires two 0.1 µF bypass capacitors - one between VDD1 and GND1 (Pins 3 and 1/7), and another between VDD2 and GND2 (Pins 14 and 9/16). No pull-up/pull-down resistors are needed: the "BC" suffix guarantees internal default-low fail-safe behavior on B1/B2 outputs during VDD1 loss.
What is the meaning of the "BC" suffix in SI8622BC-AS?
The "BC" suffix in SI8622BC-AS indicates a dual-channel, unidirectional isolator with default-low fail-safe mode: when VDD1 is unpowered, B1 and B2 outputs actively drive low. This prevents unintended activation of downstream circuits such as IGBT gates - a critical safety feature confirmed in Table 3 of the Skyworks datasheet.
How does SI8622BC-AS perform in high-noise environments like motor drives?
SI8622BC-AS achieves 50–100 kV/µs common-mode transient immunity (CMTI), validated per Figure 13 test circuit. Combined with Schmitt-trigger inputs and RF modulation, this ensures reliable operation in high-dV/dt motor drive environments where optocouplers and lower-CMTI isolators fail due to false triggering.
Is SI8622BC-AS qualified for automotive applications?
Yes, SI8622BC-AS is AEC-Q100 Grade 1 qualified (–40 to 125 °C), manufactured using automotive-specific process flows, and supported with AIAG-compliant PPAP documentation. It is explicitly listed for automotive applications including onboard chargers, battery management systems, and traction inverters in the Skyworks datasheet.
SI8622BC-AS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 1/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 35kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 13ns, 13ns
- Pulse Width Distortion (Max):
- 4.5ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SI8622BC-AS FAQ
1.How can I place an order for SI8622BC-AS through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8622BC-AS 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 SI8622BC-AS reliable?
The price and inventory of SI8622BC-AS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8622BC-AS is usually 5 days.
3.What payment methods are accepted for SI8622BC-AS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8622BC-AS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8622BC-AS?
SI8622BC-AS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8622BC-AS 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 SI8622BC-AS?
For technical support, including SI8622BC-AS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8622BC-AS requirements.
6.How does Aetrix verify that SI8622BC-AS is sourced from the original manufacturer or authorized distributors?
All SI8622BC-AS 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 SI8622BC-AS meets industry standards.
7.What is the process for return or replacement of SI8622BC-AS?
All SI8622BC-AS units undergo pre-shipment inspection (PSI). If there is an issue with SI8622BC-AS, 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 SI8622BC-AS part is unused and in its original packaging.
Return procedure for SI8622BC-AS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8622BC-AS Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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