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Skyworks Solutions Inc. SI8663BD-ASR
- Part No.:
- SI8663BD-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8663BD-ASR.pdf
- Description:
- AUTOMOTIVE 5 KV 3 FORWARD & 3 RE
- Quantity:
- Payment:
- Shipping:
Inventory:3,464
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Product details
Overview
SI8663BD-ASR from Skyworks is a six-channel, ultra-low-power digital isolator with 3 input channels on VDD1 side and 3 output channels on VDD2 side, 5 kVRMS reinforced isolation rating, 150 Mbps data rate, and fail-safe default-low output mode. It operates across –40 to 125 °C and supports 2.5–5.5 V dual supplies, enabling use in high-reliability isolated gate drivers for traction inverters.
For engineers reviewing the SI8663BD-ASR datasheet, SI8663BD-ASR pinout, SI8663BD-ASR application, or SI8663BD-ASR equivalent, key selection criteria include its 5 kVRMS wide-body SOIC-16 package, channel configuration (3/3), fail-safe low default state, CMTI ≥50 kV/µs, and AEC-Q100 qualification for automotive BMS and on-board chargers.
Technical Context
The SI8663BD-ASR implements RF-based on/off keying across a semiconductor isolation barrier-no startup initialization required. Its architecture delivers sub-10 ns propagation delay (typ. 8 ns), <2.5 ns channel-channel skew, and 5 ns minimum pulse width, supporting precise timing in bidirectional isolated communication paths.
It features independent undervoltage lockout (UVLO) on both sides (VDDUV+ = 2.24 V typ.), Schmitt-trigger inputs (VT+ = 1.67 V, VT– = 1.23 V), and selectable fail-safe mode implemented via internal pull-downs on all six channels-confirmed by ordering code "BD" (default low) and "-AS" (automotive grade).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels (Input/Output) | 3 on VDD1 side / 3 on VDD2 side - enables balanced signal splitting in isolated feedback loops |
| Max Data Rate | 150 Mbps - supports high-speed SPI, RS-485, and PWM edge transmission in motor control |
| Isolation Rating | 5 kVRMS - meets reinforced insulation requirements per VDE 0884-10 and IEC 62368-1 |
| Propagation Delay | 8 ns typical - ensures sub-10 ns timing alignment critical for gate driver dead-time control |
| CMTI | ≥50 kV/µs - maintains signal integrity in high dv/dt environments like SiC/GaN power stages |
| Supply Voltage Range | 2.5–5.5 V per side - allows interoperability with 3.3 V microcontrollers and 5 V analog front-ends |
| Fail-Safe Default | Low - guarantees safe-off state during VDD1 loss in battery management system monitoring paths |
Pinout & Package
SI8663BD-ASR uses a 16-pin wide-body SOIC package (WB SOIC-16) with 8 mm creepage, certified for 5 kVRMS reinforced insulation. Pin spacing and land pattern comply with JEDEC MS-013AC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side supply | Power for 3 input channels; requires 0.1 µF bypass capacitor to GND1 |
| GND1 | Input-side ground | Reference for input logic and UVLO detection on VDD1 side |
| IN1–IN3 | Digital inputs | Schmitt-triggered; accept 2.0–5.5 V logic; internally pulled down in BD variant |
| VDD2 | Output-side supply | Power for 3 output drivers; independent of VDD1 for true galvanic isolation |
| GND2 | Output-side ground | Reference for output logic; physically separated from GND1 by isolation barrier |
| OUT1–OUT3 | Digital outputs | 50 Ω nominal impedance; default low when VDD1 unpowered (fail-safe) |
| NC | No connect | Pins 1, 16 - unused; must remain floating per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation barrier | Eliminates LED aging and temperature drift issues inherent in optocouplers |
| Automotive-grade construction | AEC-Q100 qualified with AIAG-compliant PPAP, IMDS/CAMDS support, zero-defect manufacturing flow |
| Ultra-low power at 100 Mbps | 16.4 mA per side at 5 V - reduces thermal load in sealed EV power modules |
| High noise immunity | 50 kV/µs CMTI + 0.44 V input hysteresis - suppresses EMI in 800 V battery systems |
| Robust startup behavior | 15–40 µs tSU with no initialization sequence - enables immediate operation after cold boot |
Applications
| Battery Management System (BMS) Cell Monitoring | Traction Inverter Gate Driving |
|---|---|
Use Scenario: Isolating voltage/current sensing signals from 96-cell 800 V battery stacks to MCU side. IC Role / Device Role / Timing Role: Six-channel isolator transmitting cell voltage ADC data and fault flags across isolation barrier with <2.5 ns skew. Use Value: Enables simultaneous sampling of all cells with deterministic latency, meeting ASIL-D diagnostic timing constraints. | Use Scenario: Providing isolated gate drive signals to SiC half-bridge modules in electric vehicle inverters. IC Role / Device Role / Timing Role: Delivering matched-delay PWM signals to high-side and low-side drivers with fail-safe low default. Use Value: Prevents shoot-through during power-up/down by forcing gate outputs low until controller firmware initializes. |
| On-Board Charger (OBC) Feedback Loop | Industrial Isolated ADC Interface |
Use Scenario: Transmitting isolated DC-link voltage and current feedback from secondary to primary control side in bidirectional OBC. IC Role / Device Role / Timing Role: Three-channel input for sensor data, three-channel output for control commands across 5 kVRMS barrier. Use Value: Meets reinforced insulation requirements for 1000 V AC mains while maintaining 150 Mbps loop bandwidth. | Use Scenario: Interfacing isolated sigma-delta ADCs (e.g., AMC1306) to industrial PLC controllers over long PCB traces. IC Role / Device Role / Timing Role: Re-transmitting oversampled bitstream with minimal jitter and skew across isolation boundary. Use Value: Preserves 16-bit ENOB by limiting peak jitter to 350 ps and channel skew to ≤2.5 ns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8663BD-BIS | Industrial grade (–I suffix), same 3/3 channel count, 5 kVRMS, WB SOIC-16, but lacks AEC-Q100 qualification and PPAP documentation | Approved for industrial automation but not automotive production programs | Select SI8663BD-BIS only for non-automotive designs where automotive traceability is unnecessary |
| ADUM6633ARZ | Analog Devices part with 3/3 channel split, 5 kVRMS, SOIC-16, but higher 22 mA supply current at 100 Mbps and no fail-safe low option | Requires external pull-downs to emulate fail-safe behavior; not AEC-Q100 qualified | Choose ADUM6633ARZ only if existing ADI ecosystem integration outweighs power and safety certification trade-offs |
Compared with SI8663BD-BIS, SI8663BD-ASR adds automotive process controls, PPAP, and IMDS compliance without sacrificing timing or power; versus ADUM6633ARZ, it delivers lower dynamic current, guaranteed fail-safe low, and full automotive qualification-critical for BMS and OBC deployment.
Availability
SI8663BD-ASR is available at Aetrix Electronics and suitable for battery management systems, traction inverters, and on-board chargers requiring stable component supply under automotive qualification and reinforced 5 kVRMS isolation.
Supply support for SI8663BD-ASR 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 Si866x family was designed specifically for high-reliability automotive and industrial isolation applications demanding low power, precise timing, and reinforced safety certification-exemplified by SI8663BD-ASR's AEC-Q100 qualification and 5 kVRMS rating.
FAQ
What is the isolation rating and safety certification status of SI8663BD-ASR?
SI8663BD-ASR provides 5 kVRMS reinforced isolation and is certified to UL 1577, VDE 0884-10, CSA 5A, and CQC GB4943.1 standards. It meets IEC 62368-1 and IEC 60601-1 requirements for reinforced insulation, making it suitable for automotive and medical applications where high working voltage endurance is mandatory.
Does SI8663BD-ASR require startup initialization or configuration registers?
No, SI8663BD-ASR requires no startup initialization or register programming. It begins passing data within 15–40 µs of VDD1/VDD2 reaching UVLO threshold (2.24 V typ.), with no firmware overhead. This zero-config behavior is inherent to its RF modulation architecture and confirmed in Section 3.1 of the datasheet.
How does the fail-safe default-low mode function in SI8663BD-ASR during power loss?
In SI8663BD-ASR, the "BD" ordering code specifies internal pull-downs on all six channels. When VDD1 is unpowered (0 V), outputs remain low as long as VDD2 is active-ensuring safe shutdown in BMS monitoring paths. This behavior is defined in Table 3.1 and verified in functional testing per AEC-Q100 stress conditions.
What is the maximum achievable data rate and timing performance of SI8663BD-ASR?
SI8663BD-ASR supports up to 150 Mbps with 8 ns typical propagation delay, 0.2 ns typical pulse width distortion, and ≤2.5 ns channel-channel skew. These values are measured under 5 V/15 pF conditions and remain stable from –40 to 125 °C, enabling reliable high-speed SPI and PWM isolation in EV power electronics.
Is SI8663BD-ASR compatible with 2.5 V logic interfaces on both sides?
Yes, SI8663BD-ASR operates with VDD1 and VDD2 independently configurable from 2.5 V to 5.5 V. At 2.5 V, it delivers 1.5 mA/channel at 1 Mbps and 3.5 mA/channel at 100 Mbps-fully compatible with low-voltage microcontrollers and ADCs while maintaining 5 kVRMS isolation integrity.
SI8663BD-ASR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 6
- Inputs - Side 1/Side 2:
- 3/3
- 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:
- 2.375V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI8663BD-ASR FAQ
1.How can I place an order for SI8663BD-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8663BD-ASR 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 SI8663BD-ASR reliable?
The price and inventory of SI8663BD-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8663BD-ASR is usually 5 days.
3.What payment methods are accepted for SI8663BD-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8663BD-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8663BD-ASR?
SI8663BD-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8663BD-ASR 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 SI8663BD-ASR?
For technical support, including SI8663BD-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8663BD-ASR requirements.
6.How does Aetrix verify that SI8663BD-ASR is sourced from the original manufacturer or authorized distributors?
All SI8663BD-ASR 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 SI8663BD-ASR meets industry standards.
7.What is the process for return or replacement of SI8663BD-ASR?
All SI8663BD-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI8663BD-ASR, 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 SI8663BD-ASR part is unused and in its original packaging.
Return procedure for SI8663BD-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8663BD-ASR Tags
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ISO1212DBQR
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ISO6721BDR
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SI8710AC-B-ISR
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SI8710CC-B-ISR
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ISO6741FQDWRQ1
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ISO7721DWVR
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ISO7762FDBQR
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ISO7741DWR
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ISO7741FDWR
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