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Skyworks Solutions Inc. SI8622EC-AS
- Part No.:
- SI8622EC-AS
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8622EC-AS.pdf
- Description:
- AUTOMOTIVE 3.75 KV 1 FORWARD & 1
- Quantity:
- Payment:
- Shipping:
Inventory:1,733
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Product details
Overview
SI8622EC-AS from Skyworks Solutions is a dual-channel, reinforced-isolation digital isolator in WB SOIC-16 package, delivering 5 kVRMS isolation, 150 Mbps data rate, <10 ns propagation delay, and ultra-low power consumption (4.2–7.7 mA per channel at 100 Mbps, 5 V). It serves as a high-reliability signal barrier in isolated gate drivers, battery management systems, and industrial inverters.
For engineers reviewing the SI8622EC-AS datasheet, SI8622EC-AS pinout, SI8622EC-AS application, or SI8622EC-AS equivalent, this page provides verified electrical specs, fail-safe mode behavior, CMTI immunity (≥50 kV/µs), VDE 0884-10 reinforced certification, and side-specific UVLO thresholds critical for safety-critical power conversion designs.
Technical Context
The SI8622EC-AS implements RF-based on/off keying across a semiconductor isolation barrier-no startup initialization required. Its dual-channel architecture supports independent 2.5–5.5 V supplies on each side with Schmitt-trigger inputs and selectable fail-safe output state (default high or low).
It features side-specific undervoltage lockout (UVLO+ = 2.24 V typ, UVLO– = 2.16 V typ), precise timing (0.5 ns channel-channel skew, 2 ns propagation delay skew), and robust noise immunity via 50 kV/µs common-mode transient immunity and 1.5 ns pulse width distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial interfaces like SPI, RS-485, and isolated ADC/DAC links without timing bottlenecks. |
| Isolation rating | 5 kVRMS reinforced - certified to VDE 0884-10 and UL 1577, enabling use in mains-connected industrial and automotive systems. |
| Propagation delay | 5.0–14 ns - ensures tight timing control in real-time motor control and fast-switching power converters. |
| Supply voltage | 2.5–5.5 V per side - allows interoperability with 3.3 V microcontrollers and 5 V analog front-ends without level shifters. |
| CMTI | ≥50 kV/µs - maintains signal integrity during high dv/dt transients in SiC/GaN inverter switching nodes. |
| Fail-safe mode | Selectable default output (high or low) during input-side power loss - prevents undefined states in safety-critical BMS and traction inverter enable paths. |
| Operating temperature | –40 to +125 °C - qualified for under-hood automotive and industrial ambient environments. |
Pinout & Package
SI8622EC-AS is supplied in a wide-body SOIC-16 (WB SOIC-16) package with 8.3 mm creepage/clearance, supporting reinforced insulation up to 5 kVRMS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND1 (Pins 1, 7) | Side 1 ground reference | Return path for VDD1-supplied logic; must be routed separately from GND2 to maintain isolation barrier integrity. |
| VDD1 (Pin 3) | Side 1 primary supply | Power source for input-side circuitry; requires 0.1 µF bypass capacitor placed adjacent to pin. |
| A1 (Pin 4), A2 (Pin 5) | Side 1 digital I/O channels | Two independent input/output pins on isolated side 1; support bidirectional or unidirectional configurations per channel. |
| GND2 (Pins 9, 16) | Side 2 ground reference | Return path for VDD2-supplied logic; galvanically separated from GND1 by isolation barrier. |
| VDD2 (Pin 14) | Side 2 secondary supply | Power source for output-side circuitry; independent of VDD1, enabling level-shifting applications. |
| B1 (Pin 13), B2 (Pin 12) | Side 2 digital I/O channels | Two isolated output channels mirroring A1/A2 logic states; drive capability rated to 4 mA sink/source. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates startup initialization delay and enables immediate data transmission upon power-up-critical for fault-response systems. |
| Reinforced VDE 0884-10 certification | Validated for single-fault safety in high-voltage systems (e.g., EV traction inverters), eliminating need for external redundancy. |
| Side-specific UVLO monitoring | Independent undervoltage detection on VDD1 and VDD2 prevents erroneous outputs when either side brownouts-enhances system-level fault resilience. |
| Ultra-low power at 100 Mbps | 7.7 mA max per channel at 5 V enables thermal-efficient operation in space-constrained battery packs and multi-channel isolation stacks. |
| Schmitt-trigger inputs | 0.44 V typical hysteresis rejects high-frequency noise on long PCB traces or noisy industrial bus lines without external filtering. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
Use Scenario: Isolating cell voltage monitoring and pack contactor control signals between high-voltage battery stack and low-voltage MCU. IC Role / Device Role / Timing Role: Dual-channel isolator providing independent signal paths for voltage sensing (A1→B1) and precharge/disconnect command (A2→B2) with <10 ns latency. Use Value: Reinforced 5 kVRMS isolation meets ISO 26262 ASIL-D requirements; fail-safe low mode prevents unintended contactor closure during MCU power loss. |
Use Scenario: Transmitting PWM gate-drive signals from controller to isolated half-bridge drivers in 800 V EV inverters. IC Role / Device Role / Timing Role: High-speed, low-skew isolator delivering synchronized gate commands with ≤0.5 ns channel-channel skew to minimize shoot-through risk. Use Value: 50 kV/µs CMTI withstands SiC switching transients; 150 Mbps headroom supports future firmware updates with enhanced modulation schemes. |
| Industrial Motor Drive | Isolated Switch-Mode Power Supply |
Use Scenario: Isolating encoder feedback and current-sense ADC outputs in servo drives operating in electrically noisy factory environments. IC Role / Device Role / Timing Role: Dual-channel isolator conveying position data (A1→B1) and isolated current measurement (A2→B2) with Schmitt-trigger noise rejection. Use Value: 125 °C operation sustains reliability in enclosed drive cabinets; 2.5 V min supply enables direct interface with low-power sensors. |
Use Scenario: Providing feedback isolation for optocoupler-replacement in 3 kW telecom rectifiers with active clamp flyback topology. IC Role / Device Role / Timing Role: Replacing aging optocouplers with deterministic propagation delay (8 ns typ) to improve voltage regulation loop stability. Use Value: 10-year lifetime at rated voltage eliminates field replacement cycles; 5.5 V max supply simplifies auxiliary bias design. |
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 |
|---|---|---|---|
| ADUM220N0BRIZ-RL | 2.5 kVRMS basic isolation; 150 Mbps; 3.0–5.5 V supply; no VDE 0884-10 reinforced certification. | Not suitable for automotive or medical systems requiring reinforced insulation; limited to industrial PLC I/O modules. | Choose when cost sensitivity outweighs safety certification needs and working voltage remains below 400 V RMS. |
| ISO7721DWR | 5 kVRMS reinforced isolation; 100 Mbps max; 1.71–5.5 V supply; lower CMTI (85 kV/µs typ) but higher power at speed. | Compatible in BMS and SMPS where 100 Mbps suffices; lacks AEC-Q100 qualification for automotive traction use. | Prefer for TI ecosystem designs needing I²C-compatible timing; verify CMTI margin against specific inverter dv/dt profiles. |
Compared with ADUM220N0BRIZ-RL and ISO7721DWR, SI8622EC-AS uniquely combines AEC-Q100 qualification, VDE-reinforced 5 kVRMS, and 150 Mbps performance-making it the only option qualified for ASIL-B automotive traction inverter gate drive isolation without derating.
Availability
SI8622EC-AS is available at Aetrix Electronics and suitable for battery management systems, traction inverters, industrial motor drives, and isolated switch-mode power supplies requiring stable component supply across automotive and industrial product lifecycles.
Supply support for SI8622EC-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 safety-critical power conversion systems-including EV battery systems, industrial automation, and medical equipment-where reinforced certification and low-latency operation are mandatory.
FAQ
What isolation rating and safety certifications apply to SI8622EC-AS?
SI8622EC-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 high-voltage systems such as EV battery packs and industrial inverters where single-fault safety is required.
Does SI8622EC-AS require external components for stable operation?
Yes-SI8622EC-AS requires a 0.1 µF ceramic bypass capacitor between VDD1 and GND1, and another between VDD2 and GND2, placed as close as possible to the respective pins. No pull-up/down resistors are needed unless system noise exceeds 50 kV/µs, in which case 50–300 Ω series resistors may be added to inputs/outputs.
How does the fail-safe mode function in SI8622EC-AS during power loss?
SI8622EC-AS offers ordering-selectable fail-safe mode: "EC" suffix indicates default-low output when VDD1 is unpowered but VDD2 remains active. During input-side brownout, B1/B2 outputs transition to logic low within 1 µs, preventing undefined states in gate driver enable paths or BMS contactor control circuits.
What is the maximum data rate and timing performance of SI8622EC-AS?
SI8622EC-AS supports DC to 150 Mbps data rate with typical propagation delay of 8 ns, channel-channel skew of 0.5 ns, and pulse width distortion of 1.5 ns. These values remain stable across –40 to +125 °C, enabling deterministic timing in closed-loop motor control and high-frequency SMPS feedback loops.
Is SI8622EC-AS qualified for automotive applications?
Yes-SI8622EC-AS is AEC-Q100 qualified (Grade 1, –40 to +125 °C) and supports AIAG-compliant PPAP documentation. It is explicitly listed for automotive applications including onboard chargers, battery management systems, charging stations, and traction inverters in hybrid and battery electric vehicles.
SI8622EC-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
SI8622EC-AS FAQ
1.How can I place an order for SI8622EC-AS through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8622EC-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 SI8622EC-AS reliable?
The price and inventory of SI8622EC-AS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8622EC-AS is usually 5 days.
3.What payment methods are accepted for SI8622EC-AS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8622EC-AS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8622EC-AS?
SI8622EC-AS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8622EC-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 SI8622EC-AS?
For technical support, including SI8622EC-AS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8622EC-AS requirements.
6.How does Aetrix verify that SI8622EC-AS is sourced from the original manufacturer or authorized distributors?
All SI8622EC-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 SI8622EC-AS meets industry standards.
7.What is the process for return or replacement of SI8622EC-AS?
All SI8622EC-AS units undergo pre-shipment inspection (PSI). If there is an issue with SI8622EC-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 SI8622EC-AS part is unused and in its original packaging.
Return procedure for SI8622EC-AS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8622EC-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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