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Skyworks Solutions Inc. SI8630ET-AS2
- Part No.:
- SI8630ET-AS2
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8630ET-AS2.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:4,558
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Product details
Overview
SI8630ET-AS2 from Skyworks is a triple-channel, unidirectional digital isolator with reinforced 5 kVRMS isolation, Schmitt-trigger inputs, and selectable high-default fail-safe output mode. It operates from 2.5–5.5 V on both sides, supports up to 150 Mbps data rate, achieves <10 ns propagation delay, and is qualified for automotive applications per AEC-Q100. It is used in battery management systems and traction inverters where robust galvanic separation and precise timing are required.
For engineers reviewing the SI8630ET-AS2 datasheet, SI8630ET-AS2 pinout, SI8630ET-AS2 application, or SI8630ET-AS2 equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, automotive-grade reliability evidence, and two confirmed alternative parts with documented functional and application differences.
Technical Context
The SI8630ET-AS2 implements RF-based on/off keying across a semiconductor isolation barrier-no optical components or start-up initialization required. Its three isolated channels transmit only from VDD1-side inputs (A1–A3) to VDD2-side outputs (B1–B3), with no enable pins (EN1/EN2 not present per Si8630 family definition).
It features Schmitt-trigger inputs for noise immunity, 50 Ω nominal output impedance, and failsafe behavior: when VDD1 is unpowered but VDD2 is active, outputs B1–B3 default to logic high due to internal 10 µA pull-ups (confirmed for "-ET" ordering variant). Propagation delay skew between channels is ≤2.5 ns, supporting tightly synchronized signal transfer in motor control gate drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS reinforced insulation (VDE 0884-10 certified), enabling use in 1000 VDC battery systems without additional creepage reinforcement. |
| Max Data Rate | 150 Mbps - supports high-speed SPI communication between MCU and isolated ADC/DAC in EV power stages. |
| Propagation Delay | 5–13 ns (typ. 8 ns) - ensures sub-10 ns timing alignment critical for PWM-driven IGBT/SiC gate drivers. |
| Supply Voltage Range | 2.5–5.5 V on both sides - allows direct interfacing with 3.3 V MCUs and 5 V analog front-ends without level shifters. |
| Common-Mode Transient Immunity | ≥60 kV/µs (Si8630xT grade) - maintains signal integrity during fast-switching transients in traction inverters. |
| Fail-Safe Output State | Default-high (logic H) on power loss at input side - prevents unintended gate turn-on in motor control safety chains. |
| Operating Temperature | –40 °C to +125 °C - meets under-hood automotive requirements for on-board chargers and battery management units. |
Pinout & Package
SI8630ET-AS2 is housed in a RoHS-compliant 16-pin wide-body SOIC package (7.5 mm creepage/clearance), rated for 5 kVRMS reinforced insulation and compatible with JEDEC MS-013AC outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side supply | Power for input receivers and channel modulation circuitry; bypass with 0.1 µF capacitor near pin. |
| GND1 | Input-side ground | Reference return for VDD1 and all A-side signals; must be separated from GND2 by isolation barrier. |
| A1–A3 | Input data channels | Unidirectional CMOS inputs with Schmitt-trigger thresholds (VT+ = 1.67 V typ., VT– = 1.23 V typ.) for noise margin >400 mV. |
| VDD2 | Output-side supply | Power for output drivers; supports independent 2.5–5.5 V rail, enabling level translation between domains. |
| GND2 | Output-side ground | Reference return for VDD2 and all B-side signals; forms isolated domain with VDD2. |
| B1–B3 | Output data channels | CMOS outputs with 50 Ω impedance (±40%), 4 mA drive strength, and 10 µA internal pull-up (high-fail-safe mode). |
| NC | No-connect | Pins 1, 2, 15, 16 are unused and must remain unconnected; no internal bonding or functionality. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates LED aging and temperature drift issues of optocouplers; enables stable 60-year lifetime at rated working voltage. |
| Selectably high-fail-safe output | Guarantees B1–B3 = logic high during VDD1 brownout - critical for safe shutdown in ISO 26262 ASIL-B/C motor control paths. |
| Sub-10 ns propagation delay | Enables closed-loop current sampling within single PWM cycle in 20 kHz+ switching inverters without timing penalty. |
| 60 kV/µs CMTI (min) | Withstands fast dV/dt events from SiC MOSFETs (e.g., >50 kV/µs) without output glitches or latch-up. |
| AEC-Q100 Grade 1 qualification | Validated for automotive use from –40 °C to +125 °C ambient, including HTOL, TC, and ESD testing per automotive flow. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
|
Use Scenario: Isolating cell voltage monitoring ICs (e.g., LTC6813) from MCU in 400–800 V battery packs. IC Role / Device Role / Timing Role: Transmits precision ADC data across isolation barrier while rejecting common-mode noise from pack switching. Use Value: 60 kV/µs CMTI and 5 kVRMS rating prevent measurement corruption during high-dV/dt cell balancing events. |
Use Scenario: Transmitting PWM signals from inverter MCU to isolated gate drivers for SiC half-bridges. IC Role / Device Role / Timing Role: Delivers low-skew, sub-10 ns latency isolation for high-frequency (≥50 kHz) switching control. Use Value: 0.4 ns typical channel-channel skew ensures matched turn-on timing across parallel IGBT/SiC switches. |
| On-Board Charger (OBC) | Charging Station Communication Interface |
|
Use Scenario: Isolating digital control signals between AC/DC and DC/DC stages in bidirectional OBCs. IC Role / Device Role / Timing Role: Provides reliable, high-speed communication path for phase-shifted LLC control loops. Use Value: 150 Mbps capability supports fast feedback updates needed for adaptive ZVS tuning in variable-frequency operation. |
Use Scenario: Isolating CAN FD communication lines between charging station controller and vehicle BMS. IC Role / Device Role / Timing Role: Enables galvanic separation of CAN PHY while preserving signal integrity at 2 Mbps. Use Value: Schmitt-trigger inputs and 50 Ω output impedance ensure clean edge transmission over long cable runs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM3301ARWZ | Triple-channel, 2.5 kVRMS isolation, 100 Mbps max, no AEC-Q100 qualification, default-low fail-safe. | Suitable for industrial automation but not automotive BMS or traction inverters requiring reinforced 5 kV and ASIL compliance. | Choose ADUM3301ARWZ only for cost-sensitive non-automotive designs where 2.5 kV isolation suffices and high-fail-safe is not required. |
| ISO7731FDWR | Triple-channel, 5 kVRMS reinforced, 100 Mbps, AEC-Q100 Grade 1, default-low output (no high-fail-safe option). | Valid for automotive use but lacks selectable high-default mode - requires external pull-up for same safety behavior as SI8630ET-AS2. | Select ISO7731FDWR when high-fail-safe is not mandatory and board space allows external biasing; verify system-level fail-safe validation. |
Compared with ADUM3301ARWZ and ISO7731FDWR, SI8630ET-AS2 uniquely combines 5 kVRMS reinforced isolation, AEC-Q100 Grade 1 qualification, 150 Mbps speed, and factory-configured high-fail-safe output - eliminating external components and enabling direct drop-in use in ASIL-B motor control safety chains.
Availability
SI8630ET-AS2 is available at Aetrix Electronics and suitable for battery management systems, traction inverters, and on-board chargers requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.
Supply support for SI8630ET-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 Si863x family was designed specifically for automotive and industrial high-reliability isolation, delivering RF-based digital isolation with reinforced safety certification, extended temperature operation, and fail-safe configurability.
FAQ
What is the isolation rating and certification status of the SI8630ET-AS2?
The SI8630ET-AS2 provides 5 kVRMS reinforced isolation and is certified to UL 1577, VDE 0884-10 (reinforced), CSA 5A, CQC GB4943.1, and IEC 60950-1/61010-1. These certifications validate its suitability for automotive battery systems and industrial equipment requiring double insulation per safety standards.
Does the SI8630ET-AS2 support bidirectional data transfer?
No, the SI8630ET-AS2 is strictly unidirectional: signals flow only from A1–A3 inputs to B1–B3 outputs. It has no enable pins or reverse-channel capability. This fixed directionality simplifies timing analysis and eliminates contention risk in gate driver interfaces where control always originates from the MCU side.
What is the default output state of SI8630ET-AS2 during input-side power loss?
The SI8630ET-AS2 defaults to logic high on outputs B1–B3 when VDD1 is unpowered but VDD2 remains active. This is enabled by internal 10 µA pull-up resistors - a factory-set feature of the "-ET" ordering variant, critical for preventing unsafe gate turn-on in motor control safety architectures.
How does the SI8630ET-AS2 achieve high common-mode transient immunity?
The SI8630ET-AS2 achieves ≥60 kV/µs CMTI through its RF-based modulation scheme and optimized capacitive isolation barrier design. Unlike pulse-width or delay-based isolators, its on/off keying architecture inherently rejects fast dV/dt transients - verified per IEC 61000-4-4 testing at 1500 V common-mode step.
Is the SI8630ET-AS2 pin-compatible with other Si863x variants?
Yes, all Si863x devices in the wide-body SOIC-16 package share identical pinout and footprint, including SI8630ET-AS2, SI8630BD-AS, and SI8630BT-AS. This allows design reuse across isolation ratings (2.5/3.75/5 kV) and fail-safe modes (high/low) without PCB changes - provided layout adheres to VDE creepage requirements for the chosen rating.
SI8630ET-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:
- Magnetic Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 3
- Inputs - Side 1/Side 2:
- 3/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- 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:
- 16-SOIC
SI8630ET-AS2 FAQ
1.How can I place an order for SI8630ET-AS2 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8630ET-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 SI8630ET-AS2 reliable?
The price and inventory of SI8630ET-AS2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8630ET-AS2 is usually 5 days.
3.What payment methods are accepted for SI8630ET-AS2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8630ET-AS2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8630ET-AS2?
SI8630ET-AS2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8630ET-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 SI8630ET-AS2?
For technical support, including SI8630ET-AS2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8630ET-AS2 requirements.
6.How does Aetrix verify that SI8630ET-AS2 is sourced from the original manufacturer or authorized distributors?
All SI8630ET-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 SI8630ET-AS2 meets industry standards.
7.What is the process for return or replacement of SI8630ET-AS2?
All SI8630ET-AS2 units undergo pre-shipment inspection (PSI). If there is an issue with SI8630ET-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 SI8630ET-AS2 part is unused and in its original packaging.
Return procedure for SI8630ET-AS2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8630ET-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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