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Skyworks Solutions Inc. SI8622ET-IS2
- Part No.:
- SI8622ET-IS2
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8622ET-IS2.pdf
- Description:
- LOW-POWER SINGLE AND DUAL-CHANNE
- Quantity:
- Payment:
- Shipping:
Inventory:1,182
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Product details
Overview
SI8622ET-IS2 from Skyworks Solutions is a dual-channel, reinforced-isolation digital isolator in WB SOIC-16 package, supporting up to 150 Mbps data rate, <10 ns propagation delay, and 5 kVRMS isolation rating. It features selectable fail-safe output (default high), operates from 2.5–5.5 V supplies, and delivers 5.5 mA/channel at 100 Mbps under 5 V. It is used in isolated gate drivers for traction inverters in battery electric vehicles.
For engineers reviewing the SI8622ET-IS2 datasheet, SI8622ET-IS2 pinout, SI8622ET-IS2 application, or SI8622ET-IS2 equivalent, key selection criteria include reinforced VDE 0884-10 certification, 125 °C operation, dual-channel directionality (A1→B1, A2→B2), and automotive-grade AEC-Q100 qualification with PPAP support.
Technical Context
The SI8622ET-IS2 implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical components. Its architecture includes independent undervoltage lockout (UVLO) monitors per side (VDD1/VDD2), with UVLO+ = 2.24 V and hysteresis of 70 mV.
It supports fail-safe operation via ordering option: SI8622ET-IS2 has default-high outputs during input-side power loss, implemented via internal pull-ups on both A1/A2 inputs and B1/B2 outputs. Channel timing is tightly controlled, with 0.5 ns typical channel-channel skew and 2 ns propagation delay skew across temperature (–40 to 125 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial interfaces like isolated SPI, RS-485, and CAN FD physical layer signaling. |
| Isolation rating | 5 kVRMS reinforced - certified to VDE 0884-10 and UL 1577, enabling use in mains-connected industrial and automotive safety-critical subsystems. |
| Propagation delay | 5–14 ns - ensures sub-15 ns worst-case latency for real-time control loops in motor drives and 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. |
| Channel configuration | Dual unidirectional (A1→B1, A2→B2) - provides isolated signal paths for PWM and fault feedback in half-bridge gate driver circuits. |
| CMTI | 100 kV/µs (Si862xxT grade) - suppresses false triggering in high-dV/dt environments such as SiC/GaN inverter switching nodes. |
| Operating temperature | –40 to 125 °C - qualified for under-hood automotive applications including onboard chargers and battery management systems. |
Pinout & Package
SI8622ET-IS2 is supplied in WB SOIC-16 package (wide-body, 10.3 mm body width, 1.27 mm pitch), providing 8 mm creepage/clearance for reinforced insulation compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND1 (Pins 1, 7) | Side 1 ground reference | Return path for VDD1-supplied logic; must be low-impedance and separated from GND2 by isolation barrier. |
| VDD1 (Pin 3) | Side 1 primary supply | Powers input-side circuitry (A1, A2); requires 0.1 µF bypass capacitor placed adjacent to pin. |
| A1 (Pin 4), A2 (Pin 5) | Side 1 digital inputs | CMOS-compatible inputs with Schmitt trigger thresholds (VT+ = 1.67 V typ, VT– = 1.23 V typ) for noise immunity. |
| GND2 (Pins 9, 16) | Side 2 ground reference | Return path for VDD2-supplied output drivers; physically isolated from GND1 by >8 mm spacing. |
| VDD2 (Pin 14) | Side 2 secondary supply | Powers output-side drivers (B1, B2); independent of VDD1, enabling level translation between domains. |
| B1 (Pin 13), B2 (Pin 12) | Side 2 digital outputs | 50 Ω nominal output impedance; default-high fail-safe state ensures safe shutdown of downstream gate drivers during input power loss. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced VDE 0884-10 certification | Validated for 5 kVRMS working voltage and 10 kV surge immunity - eliminates need for external transient protection in IEC 62368-1 and ISO 26262 systems. |
| Selectably fail-safe output | SI8622ET-IS2 defaults to logic high on B1/B2 when VDD1 is unpowered - prevents unintended turn-on of high-side MOSFETs in motor control gate drivers. |
| Ultra-low power at 100 Mbps | 7.6 mA (VDD1) + 8.2 mA (VDD2) at 5 V - reduces thermal load in densely packed power modules versus optocouplers or older capacitive isolators. |
| Automotive qualification | AEC-Q100 Grade 1 (–40 to 125 °C) with AIAG-compliant PPAP documentation - enables direct integration into OEM BMS and traction inverter designs. |
| High CMTI (100 kV/µs) | Immunity to fast common-mode transients in SiC inverter half-bridges - maintains signal integrity without additional filtering or guard traces. |
Applications
| Motor Control Gate Driving | Isolated ADC Interface |
|---|---|
|
Use Scenario: Isolating PWM signals and fault feedback between MCU and high-voltage half-bridge gate drivers in EV traction inverters. IC Role / Device Role / Timing Role: Dual unidirectional isolator delivering synchronized, low-skew (≤0.5 ns) PWM and DESAT signals across 800 V DC bus. Use Value: Enables safe, high-frequency SiC switching (≥50 kHz) with guaranteed fail-safe high output preventing shoot-through during MCU reset. |
Use Scenario: Isolating serial interface (SPI) between isolated ADC (e.g., AMC1306) and host processor in battery pack monitoring units. IC Role / Device Role / Timing Role: High-speed, low-jitter (350 ps peak) digital isolator preserving 16-bit resolution timing integrity over 10+ meter PCB traces. Use Value: Maintains <5 ns pulse width distortion to prevent SPI clock/data misalignment, ensuring accurate cell voltage sampling at 1 MSps. |
| Onboard Charger Communication | Traction Inverter Fault Signaling |
|
Use Scenario: Isolating CAN FD physical layer signals between OBC controller and vehicle network in 22 kW AC charging systems. IC Role / Device Role / Timing Role: Dual-channel isolator handling CAN FD TX/RX lines with 150 Mbps capability and 100 kV/µs CMTI for noisy 400 V–800 V power stages. Use Value: Eliminates ground loop interference while meeting ISO 11898-2 EMC requirements without external common-mode chokes. |
Use Scenario: Transmitting overcurrent and overtemperature fault signals from isolated IGBT/SiC driver ICs to system controller in traction inverters. IC Role / Device Role / Timing Role: Fail-safe isolator asserting active-high fault flags with <40 µs start-up time to meet ASIL-D diagnostic response time targets. Use Value: Guarantees immediate high-level assertion on B1/B2 within 1 µs of VDD2 application, enabling <100 µs total fault shutdown. |
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 |
|---|---|---|---|
| ADUM121N0BRZ-RL7 | Single-supply (3.3 V only), 150 Mbps, 3.75 kVRMS basic isolation, no fail-safe option. | Lacks reinforced certification and default-high fail-safe; unsuitable for ASIL-B/C automotive safety islands. | Consider only for non-safety industrial SPI isolation where VDD1 = VDD2 = 3.3 V and 3.75 kVRMS suffices. |
| ISO7721DWR | 2.5–5.5 V operation, 100 Mbps, 5 kVRMS reinforced, but only 80 kV/µs CMTI and no AEC-Q100 qualification. | Not qualified for automotive under-hood use; lower CMTI limits use in SiC/GaN inverter gate drive feedback. | Acceptable for industrial isolated ADC interfaces where 125 °C ambient and 100 kV/µs CMTI are not required. |
Compared with ADUM121N0BRZ-RL7 and ISO7721DWR, SI8622ET-IS2 uniquely combines AEC-Q100 Grade 1 qualification, VDE-reinforced 5 kVRMS, 100 kV/µs CMTI, and factory-configured default-high fail-safe - making it the only option qualified for functional safety-critical EV traction inverter signal isolation.
Availability
SI8622ET-IS2 is available at Aetrix Electronics and suitable for battery management systems, traction inverters, and onboard chargers requiring stable component supply, long-term automotive lifecycle support, and traceable sourcing for ISO/TS 16949 production programs.
Supply support for SI8622ET-IS2 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 and industrial power systems - emphasizing reinforced safety certification, ultra-low power at speed, and robust electromagnetic immunity.
FAQ
What isolation rating and safety certifications apply to SI8622ET-IS2?
SI8622ET-IS2 is rated for 5 kVRMS reinforced isolation and certified to UL 1577 (5000 VRMS, 1 min), VDE 0884-10 (reinforced), IEC 62368-1, and GB4943.1. These approvals validate its use in safety-critical automotive and industrial systems requiring double or reinforced insulation barriers, including ISO 26262 ASIL-B/C applications. SI8622ET-IS2 meets all test conditions specified in VDE 0884-10 for surge, partial discharge, and lifetime endurance.
Does SI8622ET-IS2 support bidirectional communication?
No, SI8622ET-IS2 implements two unidirectional channels: A1 → B1 and A2 → B2. It does not support bidirectional data flow on a single channel. For bidirectional isolation, Skyworks offers the SI8620 variant (A1 ↔ B1, A2 ↔ B2), but SI8622ET-IS2 is strictly unidirectional and optimized for asymmetric signal routing such as PWM and fault feedback in gate driver applications.
What is the fail-safe behavior of SI8622ET-IS2 during input-side power loss?
SI8622ET-IS2 is ordered with default-high fail-safe mode: when VDD1 is unpowered (0 V) and VDD2 remains active, outputs B1 and B2 are actively driven high. This behavior is implemented via internal pull-ups and ensures safe shutdown of high-side power switches in motor control systems. The transition occurs within 1 µs of VDD2 application, per Table 3 in the datasheet.
Can SI8622ET-IS2 operate with different supply voltages on each side?
Yes, SI8622ET-IS2 supports independent 2.5–5.5 V supplies on VDD1 and VDD2. This enables level translation - for example, interfacing a 3.3 V MCU (VDD1 = 3.3 V) with a 5 V isolated gate driver IC (VDD2 = 5 V). Both supplies must remain within specification; operation outside 2.5–5.5 V risks undervoltage lockout or damage, as defined by VDDUV+ (2.24 V typ) and absolute max ratings (–0.5 to 7.0 V).
How does SI8622ET-IS2 achieve its 100 kV/µs CMTI rating?
SI8622ET-IS2 achieves 100 kV/µs common-mode transient immunity through its RF-based modulation architecture and proprietary semiconductor isolation barrier design. Unlike pulse-based isolators, its on/off keying scheme inherently rejects fast dV/dt noise. The wide-body SOIC-16 package further enhances immunity via 8 mm creepage distance and optimized internal layout, validated per VDE 0884-10 test conditions at VCM = 1500 V.
SI8622ET-IS2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm 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:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 60kV/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:
- 16-SOIC
SI8622ET-IS2 FAQ
1.How can I place an order for SI8622ET-IS2 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8622ET-IS2 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 SI8622ET-IS2 reliable?
The price and inventory of SI8622ET-IS2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8622ET-IS2 is usually 5 days.
3.What payment methods are accepted for SI8622ET-IS2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8622ET-IS2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8622ET-IS2?
SI8622ET-IS2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8622ET-IS2 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 SI8622ET-IS2?
For technical support, including SI8622ET-IS2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8622ET-IS2 requirements.
6.How does Aetrix verify that SI8622ET-IS2 is sourced from the original manufacturer or authorized distributors?
All SI8622ET-IS2 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 SI8622ET-IS2 meets industry standards.
7.What is the process for return or replacement of SI8622ET-IS2?
All SI8622ET-IS2 units undergo pre-shipment inspection (PSI). If there is an issue with SI8622ET-IS2, 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 SI8622ET-IS2 part is unused and in its original packaging.
Return procedure for SI8622ET-IS2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8622ET-IS2 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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