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Skyworks Solutions Inc. SI8622BT-AS2
- Part No.:
- SI8622BT-AS2
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8622BT-AS2.pdf
- Description:
- AUTOMOTIVE LOW-POWER SINGLE AND
- Quantity:
- Payment:
- Shipping:
Inventory:3,763
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Product details
Overview
SI8622BT-AS2 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 per side, and delivers ultra-low power consumption: 3.4 mA per channel at 1 Mbps (5 V) and 7.6 mA per channel at 100 Mbps (5 V). It is used in isolated gate drivers for traction inverters in battery electric vehicles.
For engineers reviewing the SI8622BT-AS2 datasheet, SI8622BT-AS2 pinout, SI8622BT-AS2 application, or SI8622BT-AS2 equivalent, key selection criteria include reinforced VDE 0884-10 certification, 100 kV/µs CMTI (Si862xxT variant), channel-channel skew ≤2.5 ns, fail-safe mode configuration, and compatibility with 2.5–5.5 V dual-supply systems across –40 to 125 °C.
Technical Context
The SI8622BT-AS2 implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical degradation. Its dual-channel architecture supports independent bidirectional signal transmission between isolated domains with Schmitt-trigger inputs and 50 Ω nominal output impedance.
It integrates undervoltage lockout (UVLO) on both sides (VDD1/VDD2), with hysteresis of 50–95 mV and thresholds of 1.88–2.375 V, ensuring deterministic fail-safe behavior during power transitions. The device achieves 0.5 ns typical channel-channel skew and 5 ns minimum pulse width, enabling precise timing in high-speed motor control feedback loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-bandwidth serial interfaces like isolated SPI or PWM feedback in real-time motor control. |
| Propagation delay | 5.0–14 ns - enables sub-100 ns loop timing closure in fast-switching SiC/GaN inverter gate drive circuits. |
| Channel-channel skew | ≤2.5 ns - ensures matched timing between dual channels for complementary gate drive signals. |
| Isolation rating | 5 kVRMS reinforced - certified to VDE 0884-10 and UL 1577, suitable for primary-secondary separation in EV traction inverters. |
| Supply voltage | 2.5–5.5 V per side - allows direct interfacing with 3.3 V MCU logic and 5 V gate driver supplies without level shifters. |
| CMTI | ≥60 kV/µs (Si862xxT) - suppresses false triggering in high-dV/dt environments such as 800 V battery systems. |
| Fail-safe mode | Default high output - maintains safe high-side FET off-state during VDD1 loss in isolated half-bridge configurations. |
Pinout & Package
SI8622BT-AS2 uses a wide-body SOIC-16 (WB SOIC-16) package with 8.0 mm creepage/clearance, rated for reinforced insulation per VDE 0884-10.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND1 (Pins 1, 7) | Side 1 ground reference | Return path for input-side logic; must be decoupled with 0.1 µF capacitor near Pin 3 (VDD1). |
| VDD1 (Pin 3) | Side 1 supply | 2.5–5.5 V power for input-side circuitry; UVLO monitoring active here. |
| A1 (Pin 4), A2 (Pin 5) | Side 1 digital I/O | Two independent input/output channels on isolated side 1; Schmitt-triggered for noise immunity. |
| GND2 (Pins 9, 16) | Side 2 ground reference | Return path for output-side logic; separate from GND1 to maintain galvanic isolation. |
| VDD2 (Pin 14) | Side 2 supply | 2.5–5.5 V power for output-side circuitry; independent UVLO monitoring. |
| B1 (Pin 13), B2 (Pin 12) | Side 2 digital I/O | Corresponding isolated outputs for A1/A2; default-high fail-safe state asserted when VDD1 = 0 V. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced VDE 0884-10 isolation | Validated for 5 kVRMS working voltage and 10 kV surge, enabling single-package safety compliance in EV power stages. |
| Selectably fail-safe output | Ordering code "T" denotes default-high mode: B1/B2 remain logic high during VDD1 loss, disabling high-side switches safely. |
| Ultra-low power at 100 Mbps | 7.6 mA per channel @ 5 V - reduces thermal load in densely packed gate driver PCBs versus optocouplers or older capacitive isolators. |
| 60 kV/µs CMTI (Si862xxT) | Immunity to fast common-mode transients in 800 V battery systems, preventing spurious switching in SiC half-bridges. |
| No start-up initialization | Outputs follow inputs within 40 µs of VDD1/VDD2 rise - eliminates boot-time delays in safety-critical inverter enable sequences. |
Applications
| Motor Control in Traction Inverters | Isolated ADC Interface in Battery Management Systems |
|---|---|
|
Use Scenario: Isolating PWM gate drive signals between MCU and high-voltage SiC half-bridge in BEV traction inverters operating at 800 V DC bus. IC Role / Device Role / Timing Role: Dual-channel digital isolator providing reinforced isolation for complementary high/low-side gate drive signals with <2.5 ns channel skew. Use Value: Enables precise dead-time control and prevents shoot-through by maintaining matched propagation delay and fail-safe high-side disable during MCU reset. |
Use Scenario: Isolating serial interface (SPI) between isolated ADC (e.g., AMC1306) and system MCU in automotive battery pack monitoring units. IC Role / Device Role / Timing Role: High-speed, low-jitter isolator transmitting 1 MSPS ADC conversion data across 5 kVRMS barrier with minimal latency. Use Value: Maintains 350 ps peak eye diagram jitter at 150 Mbps, preserving ADC timing integrity and reducing measurement uncertainty in cell voltage sampling. |
| Onboard Charger (OBC) Feedback Loop | Industrial Isolated Switch-Mode Power Supply |
|
Use Scenario: Isolating voltage/current sense feedback signals from secondary-side controller to primary-side digital controller in 11 kW EV OBCs. IC Role / Device Role / Timing Role: Dual-channel isolator carrying isolated analog feedback (via sigma-delta modulator) and synchronous rectifier control signals. Use Value: 5 ns minimum pulse width and 100 kV/µs CMTI ensure accurate regulation under fast load transients and EMI-rich charging environments. |
Use Scenario: Providing isolated communication and fault signaling between primary-side PWM controller and secondary-side supervisor IC in 3 kW industrial SMPS. IC Role / Device Role / Timing Role: Dual-channel isolator conveying isolated enable/disable commands and overvoltage fault alerts across reinforced barrier. Use Value: Default-high fail-safe mode asserts shutdown signal to PWM controller upon primary-side power loss, meeting IEC 62368-1 functional safety requirements. |
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 |
|---|---|---|---|
| ADUM2201BRWZ | Basic isolation only (2.5 kVRMS), no VDE 0884-10 reinforced certification; 40 kV/µs CMTI; SOIC-8 package. | Not suitable for automotive traction inverters requiring reinforced isolation; limited to industrial SMPS or non-safety-critical BMS links. | Select only if reinforced certification and >50 kV/µs CMTI are not required, and board space constraints favor SOIC-8. |
| ISO6721FDWR | Reinforced isolation (5 kVRMS), but only 35 kV/µs CMTI (non-T variant); 50 Mbps max data rate; SOIC-8. | Insufficient for 150 Mbps SPI or fast PWM in OBC feedback; lower CMTI risks false triggering in 800 V systems. | Consider only for cost-sensitive industrial applications below 50 Mbps where VDE 0884-10 is mandated but extreme CMTI is not. |
Compared with ADUM2201BRWZ and ISO6721FDWR, SI8622BT-AS2 uniquely combines VDE-reinforced 5 kVRMS rating, 150 Mbps bandwidth, ≥60 kV/µs CMTI, and default-high fail-safe mode-making it the only option qualified for ASIL-B compliant traction inverter gate drive isolation.
Availability
SI8622BT-AS2 is available at Aetrix Electronics and suitable for battery electric vehicle traction inverters, onboard chargers, and industrial isolated power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q100 qualified assurance.
Supply support for SI8622BT-AS2 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 Si861x/2x family was designed specifically for high-reliability, high-speed isolation in automotive and industrial power systems-emphasizing reinforced safety certification, ultra-low power, and robust CMTI performance.
FAQ
What isolation rating and safety certifications does the SI8622BT-AS2 support?
The SI8622BT-AS2 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 certifications validate its use in primary-secondary barriers of automotive traction inverters and medical power supplies where reinforced insulation is mandated.
How does the fail-safe mode operate in SI8622BT-AS2, and how is it configured?
The SI8622BT-AS2 has a selectable fail-safe mode indicated by the "T" suffix, meaning default-high output. When VDD1 is unpowered while VDD2 remains active, outputs B1 and B2 remain logic high. This is implemented via internal pull-ups and is fixed per ordering code-no external configuration is needed. SI8622BT-AS2 thus ensures safe deactivation of high-side switches during MCU power loss.
What is the maximum data rate and timing performance of SI8622BT-AS2 at 125 °C?
The SI8622BT-AS2 maintains full 150 Mbps capability across –40 to 125 °C. Propagation delay remains ≤14 ns, channel-channel skew ≤2.5 ns, and pulse width distortion ≤5.0 ns at maximum temperature and voltage (5.5 V). These values are guaranteed in the datasheet's Electrical Characteristics tables under TA = 125 °C conditions.
Does SI8622BT-AS2 require external components for stable operation?
Yes. SI8622BT-AS2 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 external resistors or RC networks are required for basic operation, though series termination (50–300 Ω) may be added on noisy I/O lines per layout recommendations.
Is SI8622BT-AS2 qualified for automotive applications, and what evidence supports this?
Yes. SI8622BT-AS2 is AEC-Q100 qualified (Grade 1: –40 to 125 °C), manufactured using automotive-specific process flows, and supported with AIAG-compliant PPAP documentation. Its VDE-reinforced certification, 60 kV/µs CMTI, and default-high fail-safe mode align directly with ISO 26262 ASIL-B requirements for traction inverter gate drive isolation.
SI8622BT-AS2 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
SI8622BT-AS2 FAQ
1.How can I place an order for SI8622BT-AS2 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8622BT-AS2 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 SI8622BT-AS2 reliable?
The price and inventory of SI8622BT-AS2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8622BT-AS2 is usually 5 days.
3.What payment methods are accepted for SI8622BT-AS2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8622BT-AS2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8622BT-AS2?
SI8622BT-AS2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8622BT-AS2 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 SI8622BT-AS2?
For technical support, including SI8622BT-AS2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8622BT-AS2 requirements.
6.How does Aetrix verify that SI8622BT-AS2 is sourced from the original manufacturer or authorized distributors?
All SI8622BT-AS2 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 SI8622BT-AS2 meets industry standards.
7.What is the process for return or replacement of SI8622BT-AS2?
All SI8622BT-AS2 units undergo pre-shipment inspection (PSI). If there is an issue with SI8622BT-AS2, 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 SI8622BT-AS2 part is unused and in its original packaging.
Return procedure for SI8622BT-AS2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8622BT-AS2 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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