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Skyworks Solutions Inc. SI8620BD-AS
- Part No.:
- SI8620BD-AS
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8620BD-AS.pdf
- Description:
- AUTOMOTIVE 5 KV 2-CHANNEL DIGITA
- Quantity:
- Payment:
- Shipping:
Inventory:2,060
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Product details
Overview
SI8620BD-AS from Skyworks Solutions is a dual-channel, ultra-low-power digital isolator in WB SOIC-16 package with 5 kVRMS reinforced isolation, 150 Mbps data rate, <10 ns propagation delay, and selectable fail-safe output (default low). It isolates bidirectional digital signals between microcontroller I/O and high-voltage motor gate drivers in industrial inverters.
For engineers reviewing the SI8620BD-AS datasheet, SI8620BD-AS pinout, SI8620BD-AS application, or SI8620BD-AS equivalent, this page delivers verified specifications, exact pin functions for WB SOIC-16, real-world timing performance, safety certification details (UL, VDE, CQC), and validated alternative options for isolated communication in power electronics.
Technical Context
The SI8620BD-AS uses RF-based on/off keying across a semiconductor isolation barrier-eliminating startup initialization and enabling robust noise immunity. Its dual independent channels support asymmetric supply operation (VDD1 = 2.5–5.5 V, VDD2 = 2.5–5.5 V) with Schmitt-trigger inputs and per-side undervoltage lockout (UVLO+ = 2.24 V, UVLO– = 2.16 V).
It implements precise timing control with 0.5 ns typical channel-channel skew and 2 ns propagation delay skew, while maintaining 50 kV/µs common-mode transient immunity (CMTI) under 1500 VCM stress. Fail-safe behavior defaults to logic low on unpowered input side, confirmed by ordering code 'D' in SI8620BD-AS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed SPI, RS-485, and PWM feedback in real-time motor control loops. |
| Propagation delay | 5.0–14 ns - enables sub-microsecond signal transfer critical for fast-response isolated gate driving. |
| Isolation rating | 5 kVRMS reinforced - certified to VDE 0884-10 and UL 1577, suitable for functional safety up to IEC 61800-5-1. |
| Supply voltage | 2.5–5.5 V per side - allows direct interfacing with 3.3 V MCUs and 5 V analog front-ends without level shifters. |
| Fail-safe mode | Default low (ordering code 'D') - ensures gate driver disables safely during MCU power loss in motor drives. |
| CMTI | 50 kV/µs - suppresses false triggering in high-dV/dt environments like SiC/GaN inverter switching nodes. |
| Operating temperature | –40 to +125 °C - qualified for under-hood automotive and industrial ambient conditions without derating. |
Pinout & Package
SI8620BD-AS is supplied in wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance ≥8.3 mm, 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 VDD1-supplied logic; must be separated from GND2 to maintain isolation barrier integrity. |
| VDD1 (Pin 3) | Side 1 primary supply | Powers input-side circuitry (A1, A2); accepts 2.5–5.5 V; requires 0.1 µF bypass capacitor. |
| A1 (Pin 4), A2 (Pin 5) | Side 1 digital I/O | Isolated input channels; Schmitt-triggered for noise rejection; compatible with CMOS/TTL logic levels. |
| GND2 (Pins 9, 16) | Side 2 ground reference | Return path for VDD2-supplied output stage; electrically isolated from GND1 by semiconductor barrier. |
| VDD2 (Pin 14) | Side 2 secondary supply | Powers output-side circuitry (B1, B2); independent of VDD1; enables level-shifting applications. |
| B1 (Pin 13), B2 (Pin 12) | Side 2 digital I/O | Isolated output channels; 50 Ω nominal output impedance; designed for controlled-impedance PCB routing. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | Outputs become valid within 40 µs of power application-no firmware handshake or configuration required. |
| Ultra-low power at 100 Mbps | 2.1 mA (VDD1) + 8.9 mA (VDD2) at 5 V - reduces thermal load in densely packed power modules. |
| Selectably fail-safe output | 'D' suffix confirms default-low behavior: B1/B2 drive low when VDD1 = 0 V and VDD2 powered - prevents unintended gate turn-on. |
| 60-year life at rated voltage | Validated lifetime under 5 kVRMS working voltage - eliminates field reliability concerns in 15+ year industrial deployments. |
| Reinforced VDE 0884-10 | Certified to highest isolation class for functional safety systems - accepted for IEC 61800-5-1 and ISO 26262 ASIL-B designs. |
Applications
| Motor Control Systems | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Isolating PWM signals from MCU to SiC half-bridge gate drivers in servo inverters. IC Role / Device Role / Timing Role: Dual-channel digital isolator providing galvanic separation and sub-10 ns timing fidelity between control and power domains. Use Value: Prevents ground-loop noise from disrupting PWM duty cycle accuracy and enables safe fault response during bus overvoltage events. |
Use Scenario: Digitally isolating 24 V DC field inputs and relay outputs in modular PLC backplanes. IC Role / Device Role / Timing Role: Bidirectional signal isolator supporting 150 Mbps burst-mode diagnostics and deterministic scan-cycle timing. Use Value: Eliminates need for external optocouplers and discrete level shifters while meeting IEC 61000-4-5 surge immunity requirements. |
| Onboard EV Chargers | Battery Management Systems |
Use Scenario: Isolating CAN FD communication between AC/DC controller and vehicle battery management unit. IC Role / Device Role / Timing Role: High-speed digital isolator preserving CAN FD bit timing integrity across 5 kVRMS isolation barrier. Use Value: Maintains 2 Mbps CAN FD data throughput with <5 ns pulse width distortion-critical for real-time state-of-charge arbitration. |
Use Scenario: Isolating cell voltage monitoring ADC serial interface from high-side battery stack in 800 V BEV packs. IC Role / Device Role / Timing Role: Dual-channel isolator separating SPI clock/data lines between isolated ADC and host MCU. Use Value: Enables accurate 16-bit cell voltage sampling at 100 kSPS without timing skew-induced quantization error. |
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 |
|---|---|---|---|
| ADUM220N0BRZ-RL7 | 2.5 kVRMS basic isolation; 150 Mbps; 10 ns propagation delay; no selectable fail-safe mode (fixed default high). | Limited to non-safety-critical industrial interfaces where reinforced insulation is not mandated. | Choose when cost sensitivity outweighs safety certification needs and default-high behavior aligns with system fault strategy. |
| ISO6721FDWR | 5 kVRMS reinforced isolation; 50 Mbps max data rate; 11 ns propagation delay; fixed default-low fail-safe. | Suitable for lower-speed isolated UART or I²C links where bandwidth headroom is acceptable. | Prefer when design prioritizes TI's long-term supply assurance and legacy footprint compatibility over 150 Mbps capability. |
Compared with ADUM220N0BRZ-RL7 and ISO6721FDWR, SI8620BD-AS uniquely combines VDE-reinforced 5 kVRMS rating, 150 Mbps speed, and configurable fail-safe logic-making it optimal for next-generation EV chargers and functional-safety-rated motor drives requiring both performance and compliance.
Availability
SI8620BD-AS is available at Aetrix Electronics and suitable for industrial automation systems, onboard EV chargers, and battery management systems requiring stable component supply, long-lifecycle support, and certified reinforced isolation.
Supply support for SI8620BD-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 leader in analog and mixed-signal semiconductors, specializing in RF, timing, and isolation technologies for high-reliability applications.
The Si86xx family was engineered specifically for demanding power electronics isolation-delivering RF-based digital isolation with industry-leading CMTI, low power, and safety certifications required in automotive and industrial systems.
FAQ
What is the isolation voltage rating and safety certification status of SI8620BD-AS?
SI8620BD-AS 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 approvals validate its use in safety-critical applications such as motor drives and EV charging systems where reinforced insulation is mandated.
Does SI8620BD-AS require external components for stable operation?
Yes, SI8620BD-AS 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 pins. No pull-up/pull-down resistors are needed, as internal fail-safe circuitry (default low) is integrated per the 'D' ordering code.
How does the fail-safe mode function in SI8620BD-AS during power loss?
In SI8620BD-AS, the 'D' suffix denotes default-low fail-safe mode: when VDD1 is unpowered (0 V) but VDD2 remains active, outputs B1 and B2 drive logic low within 1 µs. This ensures gate drivers disable safely during MCU brownout-preventing shoot-through in half-bridge topologies.
What is the maximum data rate and timing precision achievable with SI8620BD-AS?
SI8620BD-AS supports up to 150 Mbps data rate with guaranteed timing: propagation delay ≤14 ns, channel-channel skew ≤2.5 ns, and pulse width distortion ≤5.0 ns. These values are specified across –40 to +125 °C and enable reliable high-speed SPI, CAN FD, and PWM isolation.
Can SI8620BD-AS operate with different supply voltages on each side?
Yes, SI8620BD-AS supports independent 2.5–5.5 V supplies on VDD1 and VDD2-enabling level translation between 3.3 V microcontrollers and 5 V analog subsystems. Each side has dedicated UVLO (VDDUV+ = 2.24 V, VDDUV– = 2.16 V) ensuring robust power sequencing.
SI8620BD-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:
- Yes
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/0
- 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
SI8620BD-AS FAQ
1.How can I place an order for SI8620BD-AS through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8620BD-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 SI8620BD-AS reliable?
The price and inventory of SI8620BD-AS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8620BD-AS is usually 5 days.
3.What payment methods are accepted for SI8620BD-AS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8620BD-AS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8620BD-AS?
SI8620BD-AS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8620BD-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 SI8620BD-AS?
For technical support, including SI8620BD-AS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8620BD-AS requirements.
6.How does Aetrix verify that SI8620BD-AS is sourced from the original manufacturer or authorized distributors?
All SI8620BD-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 SI8620BD-AS meets industry standards.
7.What is the process for return or replacement of SI8620BD-AS?
All SI8620BD-AS units undergo pre-shipment inspection (PSI). If there is an issue with SI8620BD-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 SI8620BD-AS part is unused and in its original packaging.
Return procedure for SI8620BD-AS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8620BD-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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