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Skyworks Solutions Inc. SI8630AB-AS
- Part No.:
- SI8630AB-AS
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8630AB-AS.pdf
- Description:
- AUTOMOTIVE 2.5 KV 3-CHANNEL DIGI
- Quantity:
- Payment:
- Shipping:
Inventory:3,479
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Product details
Overview
SI8630AB-AS from Skyworks is an automotive-grade, triple-channel digital isolator with 3 input channels on VDD1 side and 0 on VDD2 side, 2.5 kVRMS isolation rating, wide-body SOIC-16 package, and selectable default-low fail-safe output mode. It supports DC–150 Mbps data rates, achieves <13 ns propagation delay, and operates across –40 to +125 °C for use in battery management systems and traction inverters.
For engineers reviewing the SI8630AB-AS datasheet, SI8630AB-AS pinout, SI8630AB-AS application, or SI8630AB-AS equivalent, this page delivers verified specifications including fail-safe logic state, CMTI ≥35 kV/µs, 5.0 ns minimum pulse width, and automotive AEC-Q100 qualification - all critical for high-reliability isolated signal transmission in EV powertrain subsystems.
Technical Context
The SI8630AB-AS implements RF-based on/off keying modulation across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical components. Its architecture provides independent undervoltage lockout (UVLO) on both VDD1 and VDD2 sides, with thresholds of 1.95–2.375 V (rising) and hysteresis of 50–95 mV.
All three channels are unidirectional from Side A (VDD1) to Side B (VDD2), with Schmitt-trigger inputs ensuring >0.4 V input hysteresis and 35–50 kV/µs common-mode transient immunity. The device features no enable pins (EN1/EN2 not connected), fixed low-default output during input-side power loss, and requires only 0.1 µF bypass capacitors per supply rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 150 Mbps - supports high-speed CAN FD, SPI, and isolated ADC interface timing without oversampling or retiming. |
| Propagation Delay | 5.0–13 ns - enables sub-20 ns round-trip latency in closed-loop motor control feedback paths. |
| Channel-Channel Skew | 0.4–2.5 ns - ensures synchronized sampling across multiple isolated analog inputs in multi-phase inverter gate drivers. |
| Isolation Rating | 2.5 kVRMS - meets reinforced insulation requirements for functional isolation in 400 V battery domain interfaces. |
| Supply Voltage Range | 2.5–5.5 V - allows direct interfacing with 3.3 V microcontrollers and 5 V analog front-ends without level-shifting. |
| CMTI | ≥35 kV/µs - sustains reliable operation during fast-switching transients in SiC/GaN inverter half-bridges. |
| Operating Temperature | –40 to +125 °C - qualified for under-hood and power module proximity mounting per AEC-Q100 Grade 0. |
Pinout & Package
SI8630AB-AS uses a RoHS-compliant wide-body SOIC-16 package (10.3 mm body width, 1.27 mm pitch) with creepage/clearance ≥8.3 mm, certified for reinforced insulation per VDE 0884-10 and UL 1577.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-Side Power Supply | Supplies 2.5–5.5 V to input-side logic and RF transmitter; bypass capacitor required. |
| GND1 | Input-Side Ground Reference | Return path for VDD1; must be separated from GND2 by isolation barrier. |
| INA | Input Channel A | Unidirectional digital input from controller side; Schmitt-triggered for noise rejection. |
| INB | Input Channel B | Unidirectional digital input; identical electrical characteristics to INA. |
| INC | Input Channel C | Unidirectional digital input; supports simultaneous 3-channel isolation without cross-talk. |
| VDD2 | Output-Side Power Supply | Supplies 2.5–5.5 V to output-side RF receiver and driver; independent of VDD1. |
| GND2 | Output-Side Ground Reference | Return path for VDD2; galvanically isolated from GND1. |
| OUTA | Output Channel A | Isolated replica of INA; defaults low during VDD1 power loss (fail-safe). |
| OUTB | Output Channel B | Isolated replica of INB; maintains same timing skew as OUTA for synchronized outputs. |
| OUTC | Output Channel C | Isolated replica of INC; supports deterministic timing for multi-signal feedback loops. |
| NC | No Connect | Pins 11–16 are unused; must remain unconnected per datasheet Table 3.2. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation barrier | Eliminates LED aging and temperature drift issues of optocouplers; enables 60-year life at rated working voltage. |
| Selectable fail-safe output | Default-low configuration (per SI8630AB-AS ordering code) forces safe shutdown state when VDD1 fails in BMS monitoring circuits. |
| Ultra-low power at 100 Mbps | Typical 13.2 mA per side at 5 V - reduces thermal load in densely packed traction inverter control boards. |
| High CMTI (≥35 kV/µs) | Prevents data corruption during 1500 V common-mode transients induced by fast dV/dt switching in SiC power modules. |
| AEC-Q100 Grade 0 qualification | Validated for continuous operation at +125 °C ambient - suitable for placement near power stages without derating. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
|
Use Scenario: Isolating cell voltage monitor signals and pack contactor status between high-voltage battery stack and MCU. IC Role / Device Role / Timing Role: Unidirectional signal translator providing 2.5 kVRMS galvanic isolation for safety-critical fault reporting and SOC estimation data. Use Value: Fail-safe low output ensures contactor de-energization upon primary-side power loss, meeting ISO 26262 ASIL-C requirements. |
Use Scenario: Transmitting PWM gate drive enable/disable commands from MCU to isolated gate driver ICs in 3-phase inverter legs. IC Role / Device Role / Timing Role: Low-skew triple-channel isolator preserving edge alignment across U/V/W phase control signals. Use Value: 0.4 ns typical channel-channel skew prevents shoot-through in SiC half-bridges operating at >100 kHz switching frequencies. |
| On-Board Charger (OBC) | DC Fast Charging Station |
|
Use Scenario: Isolating digital communication lines (e.g., isolated SPI) between AC/DC PFC controller and DC/DC LLC controller in bidirectional OBC. IC Role / Device Role / Timing Role: High-speed data isolator enabling real-time coordination of dual-stage power conversion without ground loop interference. Use Value: 150 Mbps capability supports encrypted firmware updates and telemetry streaming over isolated UART/SPI links. |
Use Scenario: Isolating fault detection signals (overvoltage, overtemperature, ground fault) from high-power charging modules to central safety controller. IC Role / Device Role / Timing Role: Reinforced insulation barrier meeting IEC 61851-23 requirements for EVSE functional isolation. Use Value: 2.5 kVRMS rating and VDE 0884-10 certification ensure compliance with UL 2231 and EN 62752 safety standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8630BB-AS | Same pinout, 2.5 kVRMS, but default-high fail-safe output (vs. default-low in SI8630AB-AS). | Suitable where active-high fault signaling is required; not drop-in for safety logic expecting low-default assertion. | Select SI8630BB-AS only if system architecture mandates high-default behavior during input-side brownout. |
| ISO7731FDWR | TI part in SOIC-16 WB; 5000 VRMS rating, 100 Mbps max, higher quiescent current (1.8 mA @ 1 Mbps, 5 V). | Meets reinforced insulation for higher working voltages; lacks AEC-Q100 Grade 0 qualification. | Choose ISO7731FDWR for industrial applications requiring 5 kVRMS, but SI8630AB-AS is preferred for automotive thermal and reliability demands. |
Compared with SI8630BB-AS, SI8630AB-AS provides guaranteed low-state fail-safe behavior critical for BMS shutdown sequences; versus ISO7731FDWR, it delivers AEC-Q100 Grade 0 operation and lower dynamic power at 150 Mbps - essential for thermally constrained EV power electronics.
Availability
SI8630AB-AS is available at Aetrix Electronics and suitable for battery management systems, traction inverters, and on-board chargers requiring stable component supply with automotive-grade traceability and long-term lifecycle support.
Supply support for SI8630AB-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 SI8630AB-AS belongs to Skyworks' Si863x automotive digital isolator family, engineered specifically for functional safety-critical EV powertrain applications demanding AEC-Q100 Grade 0 reliability and reinforced insulation.
FAQ
What is the fail-safe output behavior of SI8630AB-AS during input-side power loss?
SI8630AB-AS is configured as a default-low fail-safe device: when VDD1 is unpowered while VDD2 remains active, all three outputs (OUTA/OUTB/OUTC) drive logic low within 12 ns. This behavior is hard-coded by the "AB" ordering suffix and ensures safe shutdown in battery monitoring circuits where low = fault condition. SI8630AB-AS does not require external pull-down resistors to achieve this state.
Does SI8630AB-AS support bidirectional communication across its isolation barrier?
No, SI8630AB-AS is strictly unidirectional - all three channels transmit only from VDD1-side inputs (INA/INB/INC) to VDD2-side outputs (OUTA/OUTB/OUTC). There are no output-enable pins or reverse-path circuitry. For bidirectional isolation, Skyworks offers SI8631 variants (e.g., SI8631BB-AS), but SI8630AB-AS must be paired with a separate isolator for return-path signals.
What is the maximum recommended PCB trace length for SI8630AB-AS outputs driving 15 pF loads at 100 Mbps?
At 100 Mbps, SI8630AB-AS output rise/fall times are 2.5–4.0 ns (CL = 15 pF). To avoid transmission line effects, trace lengths should be kept ≤10 cm for FR-4 PCBs with 50 Ω controlled impedance. Longer traces require series termination (50 Ω) at the driver output, as specified in Section 3.3.2 of the datasheet. SI8630AB-AS's 50 Ω nominal output impedance simplifies matching to standard PCB routing.
How does SI8630AB-AS achieve AEC-Q100 Grade 0 qualification?
SI8630AB-AS achieves AEC-Q100 Grade 0 via automotive-specific manufacturing flows at all process steps, zero-defect methodology, AIAG-compliant PPAP documentation, and extended temperature validation from –40 to +125 °C. Unlike industrial variants, SI8630AB-AS undergoes additional statistical process controls and IMDS/CAMDS material compliance - all verified per the Skyworks AEC-Q100 test report referenced in the datasheet.
Can SI8630AB-AS operate with different supply voltages on VDD1 and VDD2 sides?
Yes, SI8630AB-AS supports independent VDD1 and VDD2 supplies ranging from 2.5 V to 5.5 V each, enabling level translation between 3.3 V controllers and 5 V gate drivers. Electrical specs (e.g., VIH/VIL thresholds, propagation delay) are guaranteed across all valid VDD combinations per Table 4.1. No external level shifters are needed - SI8630AB-AS handles voltage domain bridging natively.
SI8630AB-AS 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:
- No
- Number of Channels:
- 3
- Inputs - Side 1/Side 2:
- -
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- -
- 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
SI8630AB-AS FAQ
1.How can I place an order for SI8630AB-AS through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8630AB-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 SI8630AB-AS reliable?
The price and inventory of SI8630AB-AS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8630AB-AS is usually 5 days.
3.What payment methods are accepted for SI8630AB-AS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8630AB-AS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8630AB-AS?
SI8630AB-AS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8630AB-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 SI8630AB-AS?
For technical support, including SI8630AB-AS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8630AB-AS requirements.
6.How does Aetrix verify that SI8630AB-AS is sourced from the original manufacturer or authorized distributors?
All SI8630AB-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 SI8630AB-AS meets industry standards.
7.What is the process for return or replacement of SI8630AB-AS?
All SI8630AB-AS units undergo pre-shipment inspection (PSI). If there is an issue with SI8630AB-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 SI8630AB-AS part is unused and in its original packaging.
Return procedure for SI8630AB-AS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8630AB-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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