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Skyworks Solutions Inc. SI8620EC-AS
- Part No.:
- SI8620EC-AS
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8620EC-AS.pdf
- Description:
- AUTOMOTIVE 3.75 KV 2-CHANNEL DIG
- Quantity:
- Payment:
- Shipping:
Inventory:4,666
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Product details
Overview
SI8620EC-AS 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 Schmitt-trigger inputs, selectable fail-safe output (default low), and operates from 2.5–5.5 V across –40 to +125 °C - deployed in battery management systems and traction inverters requiring high CMTI and long-term reliability.
For engineers reviewing the SI8620EC-AS datasheet, SI8620EC-AS pinout, SI8620EC-AS application, or SI8620EC-AS equivalent, key selection criteria include its 5 kVRMS reinforced insulation (VDE 0884-10), 50 kV/µs common-mode transient immunity, dual-channel bidirectional capability, and automotive-grade AEC-Q100 qualification for high-voltage subsystems.
Technical Context
The SI8620EC-AS implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical degradation. Its architecture delivers precise timing with ≤0.5 ns channel-channel skew and ≤2 ns propagation delay skew.
Each side (A and B) has independent undervoltage lockout (UVLO) with 70 mV hysteresis, and the device supports fail-safe operation where unpowered input side yields defined low-level outputs when VDD2 is active - configured at manufacture per ordering code.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial interfaces including isolated SPI, RS-485, and CAN FD physical layer signaling. |
| Isolation rating | 5 kVRMS reinforced - certified to VDE 0884-10 and UL 1577, enabling use in mains-connected industrial and EV power stages. |
| Propagation delay | 5.0–14 ns - ensures tight timing control in closed-loop motor drives and real-time protection circuits. |
| CMTI | 50 kV/µs minimum - maintains signal integrity during fast-switching events in SiC/GaN inverters. |
| Supply voltage | 2.5–5.5 V per side - allows interoperability with 3.3 V microcontrollers and 5 V analog front-ends without level-shifting. |
| Operating temperature | –40 to +125 °C - qualified for under-hood automotive and industrial ambient environments. |
| Fail-safe mode | Default low output - prevents undefined states during partial power loss in safety-critical BMS monitoring paths. |
Pinout & Package
SI8620EC-AS is housed in a wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance optimized for reinforced insulation. Pin functions are electrically isolated between Side 1 (pins 1–8) and Side 2 (pins 9–16), with dedicated ground and supply pins per side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND1 (Pin 1, 7) | Side 1 ground reference | Return path for VDD1 and A1/A2 signals; must be locally decoupled with 0.1 µF capacitor. |
| VDD1 (Pin 3) | Side 1 power supply | Supplies transmitter circuitry for channels A1/A2; accepts 2.5–5.5 V with UVLO monitoring. |
| A1 (Pin 4), A2 (Pin 5) | Side 1 digital I/O | Bidirectional isolated data channels; Schmitt-trigger inputs tolerate slow edges and noise. |
| GND2 (Pin 9, 16) | Side 2 ground reference | Independent return for VDD2 and B1/B2; galvanically separated from GND1 by isolation barrier. |
| VDD2 (Pin 14) | Side 2 power supply | Supplies receiver circuitry for B1/B2; UVLO threshold matches VDD1 for coordinated fail-safe behavior. |
| B1 (Pin 13), B2 (Pin 12) | Side 2 digital I/O | Isolated outputs corresponding to A1/A2; default-low state asserted when VDD1 = 0 V and VDD2 powered. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates LED aging and temperature drift of optocouplers; enables >60-year lifetime at rated working voltage. |
| Selectably fail-safe output | Factory-configured default-low logic state ensures safe shutdown in BMS fault detection paths during input-side power loss. |
| Ultra-low power at 100 Mbps | 5.5 mA per channel at 5 V - reduces thermal load in densely packed power modules and extends battery runtime in portable test gear. |
| High CMTI (50 kV/µs) | Prevents data corruption during 100+ V/ns switching transients in SiC inverter half-bridges. |
| Automotive-grade qualification | AEC-Q100 Grade 1 (–40 to +125 °C) with PPAP support - meets requirements for OBC, traction inverter, and DC-DC controller designs. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
Use Scenario: Isolating cell voltage monitor ICs from MCU in high-voltage EV battery packs (up to 1000 V). IC Role / Device Role / Timing Role: Dual-channel isolator conveying ADC data and balance command signals across 5 kVRMS barrier with <10 ns latency. Use Value: Enables accurate real-time SOC/SOH calculation while meeting IEC 62619 and ISO 26262 ASIL-B functional safety requirements. |
Use Scenario: Transmitting PWM gate drive signals from controller to high-side/lower-side SiC MOSFETs in 800 V traction inverters. IC Role / Device Role / Timing Role: Providing matched-propagation-delay isolation for complementary PWM pairs to prevent shoot-through. Use Value: Delivers 0.5 ns channel-channel skew and 50 kV/µs CMTI to sustain reliable switching at 100+ kHz with minimal dead-time penalty. |
| Onboard Charger (OBC) | Industrial Isolated ADC Interface |
Use Scenario: Isolating digital control signals between AC/DC PFC stage and DC/DC LLC stage in bi-directional OBCs. IC Role / Device Role / Timing Role: Dual-channel isolator carrying feedback error signals and enable commands across reinforced barrier. Use Value: Supports 150 Mbps data rate for fast loop response and meets reinforced insulation requirements per UL 62368-1 and VDE 0884-10. |
Use Scenario: Interfacing isolated sigma-delta ADCs (e.g., AMC1306) to host processor in motor drive current sensing. IC Role / Device Role / Timing Role: Transmitting high-resolution, low-jitter serial bitstream (e.g., Manchester-encoded) across isolation boundary. Use Value: 350 ps peak eye diagram jitter preserves ENOB in 16-bit+ isolated measurement chains operating at 20 MSPS. |
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 |
|---|---|---|---|
| ADUM220N0BRIZ-RL7 | 2.5 kVRMS basic isolation; 100 Mbps max; 3.15–5.5 V supply; no AEC-Q100 grade | Suitable for non-safety-critical industrial PLC I/O modules, not automotive or reinforced-barrier systems | Choose when cost sensitivity outweighs 5 kVRMS and automotive qualification requirements. |
| ISO7721DWR | 5 kVRMS reinforced; 100 Mbps; 2.25–5.5 V; CMTI = 85 kV/µs; SOIC-8 package (single-channel) | Requires two units for dual-channel; higher CMTI but lacks fail-safe configuration option | Prefer for ultra-noisy environments where CMTI >50 kV/µs is mandatory, accepting extra board area and BOM count. |
Compared with ADUM220N0BRIZ-RL7 and ISO7721DWR, SI8620EC-AS uniquely combines 5 kVRMS reinforced certification, AEC-Q100 Grade 1, factory-set default-low fail-safe mode, and dual-channel integration in WB SOIC-16 - making it optimal for space-constrained, safety-compliant EV power electronics.
Availability
SI8620EC-AS is available at Aetrix Electronics and suitable for battery management systems, traction inverters, onboard chargers, and isolated ADC interfaces requiring stable component supply across automotive and industrial design cycles.
Supply support for SI8620EC-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 Si86xx family was engineered specifically for high-reliability, high-noise immunity digital isolation in automotive electrification and industrial power systems - emphasizing long-life stability, reinforced safety certification, and low-power high-speed performance.
FAQ
What isolation rating does the SI8620EC-AS support, and which standards does it meet?
The SI8620EC-AS provides 5 kVRMS reinforced isolation, certified to UL 1577 (5000 VRMS, 1 minute), VDE 0884-10 (reinforced), IEC 62368-1, and CSA standards. This enables compliance with end-equipment requirements for EV battery packs and industrial motor drives where reinforced insulation is mandated.
Does the SI8620EC-AS require external startup initialization or configuration?
No. The SI8620EC-AS uses an RF-based modulation scheme with no startup initialization required. It begins transmitting valid data within 40 µs of VDD1/VDD2 reaching UVLO thresholds, and requires only 0.1 µF bypass capacitors per supply - simplifying system boot sequence design.
What is the fail-safe behavior of the SI8620EC-AS during input-side power loss?
The SI8620EC-AS is factory-configured for default-low fail-safe mode: when VDD1 = 0 V and VDD2 remains powered, outputs B1 and B2 assert logic low. This prevents undefined states in safety-critical monitoring paths such as BMS fault flag transmission.
How does the SI8620EC-AS achieve high noise immunity in power electronics environments?
The SI8620EC-AS achieves 50 kV/µs common-mode transient immunity (CMTI) via RF carrier modulation and differential receiver architecture. This suppresses coupling from fast dV/dt transients in SiC/GaN inverters, ensuring data integrity without additional filtering or layout guard bands.
Is the SI8620EC-AS qualified for automotive applications, and what documentation is available?
Yes - the SI8620EC-AS is AEC-Q100 Grade 1 qualified (–40 to +125 °C) and supported with AIAG-compliant PPAP documentation, IMDS/CAMDS listings, and automotive-specific manufacturing flow validation - enabling direct use in OBC, BMS, and traction inverter designs.
SI8620EC-AS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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:
- 3750Vrms
- 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:
- 8-SOIC
SI8620EC-AS FAQ
1.How can I place an order for SI8620EC-AS through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8620EC-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 SI8620EC-AS reliable?
The price and inventory of SI8620EC-AS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8620EC-AS is usually 5 days.
3.What payment methods are accepted for SI8620EC-AS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8620EC-AS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8620EC-AS?
SI8620EC-AS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8620EC-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 SI8620EC-AS?
For technical support, including SI8620EC-AS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8620EC-AS requirements.
6.How does Aetrix verify that SI8620EC-AS is sourced from the original manufacturer or authorized distributors?
All SI8620EC-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 SI8620EC-AS meets industry standards.
7.What is the process for return or replacement of SI8620EC-AS?
All SI8620EC-AS units undergo pre-shipment inspection (PSI). If there is an issue with SI8620EC-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 SI8620EC-AS part is unused and in its original packaging.
Return procedure for SI8620EC-AS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8620EC-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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