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Skyworks Solutions Inc. SI8620BT-AS
- Part No.:
- SI8620BT-AS
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8620BT-AS.pdf
- Description:
- AUTOMOTIVE 10 KV SURGE, 5 KV ISO
- Quantity:
- Payment:
- Shipping:
Inventory:1,963
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Product details
Overview
SI8620BT-AS from Skyworks Solutions is a dual-channel, reinforced-isolation digital isolator in wide-body 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 high), and operates across –40°C to +125°C for use in battery management systems and traction inverters.
For engineers reviewing the SI8620BT-AS datasheet, SI8620BT-AS pinout, SI8620BT-AS application, or SI8620BT-AS equivalent, key selection criteria include its 5 kVRMS reinforced insulation per VDE 0884-10, 100 kV/µs CMTI, dual-channel directionality, and automotive-grade AEC-Q100 qualification - all critical for high-reliability isolated communication in EV powertrain subsystems.
Technical Context
The SI8620BT-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.
It supports independent undervoltage lockout (UVLO) on both sides (VDD1/VDD2), with thresholds of 2.24 V (typ) and 70 mV hysteresis, ensuring deterministic fail-safe behavior during brownout. The device uses internal 50 Ω output drivers and requires only 0.1 µF bypass capacitors per supply rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - enables high-speed SPI, RS-485, and CAN FD isolation without protocol translation. |
| Isolation rating | 5 kVRMS reinforced - certified to VDE 0884-10 and UL 1577, suitable for primary-secondary barriers in OBCs and BMS. |
| Propagation delay | 5–14 ns (typ 8 ns) - ensures tight timing control in closed-loop motor control and gate driver feedback paths. |
| CMTI | 100 kV/µs (Si862xxT variant) - suppresses false triggering in high-dV/dt environments like IGBT/SiC inverter switching. |
| Supply voltage | 2.5–5.5 V per side - allows direct interfacing with 3.3 V microcontrollers and 5 V analog front-ends without level shifters. |
| Operating temperature | –40°C to +125°C - meets automotive under-hood and industrial ambient requirements without derating. |
| Fail-safe mode | Default high output - maintains safe logic state during VDD1 loss while VDD2 remains active, critical for fault reporting. |
Pinout & Package
SI8620BT-AS is housed in a WB SOIC-16 package (7.5 mm creepage/clearance) with reinforced insulation. Pin functions are validated per Skyworks DS 206328B Section 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND1 (Pins 1, 7) | Side 1 ground reference | Provides low-impedance return path for input-side logic; must be decoupled locally to VDD1. |
| VDD1 (Pin 3) | Side 1 supply input | Accepts 2.5–5.5 V; powers input-side transmitter and Schmitt trigger; requires 0.1 µF bypass capacitor. |
| A1 (Pin 4), A2 (Pin 5) | Side 1 digital I/O | Two independent input channels; Schmitt-triggered for >0.44 V hysteresis against EMI in noisy motor drive environments. |
| GND2 (Pins 9, 16) | Side 2 ground reference | Galvanically isolated return for output-side circuitry; separates high-voltage domain from MCU domain. |
| VDD2 (Pin 14) | Side 2 supply input | Independent 2.5–5.5 V supply for output-side receiver and driver; enables level-shifting between domains. |
| B1 (Pin 13), B2 (Pin 12) | Side 2 digital I/O | Two isolated output channels; 50 Ω nominal output impedance matches controlled-impedance PCB traces for clean signal integrity at 150 Mbps. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates LED aging and temperature drift of optocouplers; enables stable 60-year life at rated working voltage. |
| Selectably fail-safe output | Factory-configured default-high logic state ensures defined output during input-side power loss - essential for safety-critical diagnostics. |
| Ultra-low power at 100 Mbps | 5.5 mA per channel @ 5 V / 100 Mbps - reduces thermal load in densely packed BMS modules and enables smaller heatsinks. |
| High CMTI (100 kV/µs) | Prevents data corruption in SiC/GaN inverter applications where common-mode transients exceed 50 kV/µs. |
| AEC-Q100 Grade 1 qualified | Validated for automotive use from –40°C to +125°C junction temperature, including HTOL and TC testing per stress requirements. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
|
Use Scenario: Isolating cell voltage monitoring ADCs and pack-level MCU communications in 400–800 V EV battery packs. IC Role / Device Role / Timing Role: Dual-channel isolator conveying sampled analog front-end data and command signals across 5 kVRMS barrier with <10 ns skew. Use Value: Enables accurate SOC estimation by preserving timing correlation between voltage/current sampling channels under high dv/dt noise. |
Use Scenario: Transmitting PWM gate-drive signals and fault feedback from high-side IGBT/SiC drivers to low-voltage controller in electric vehicle inverters. IC Role / Device Role / Timing Role: Bidirectional isolation interface with 150 Mbps capability supporting fast current-sense loop closure and DESAT reporting. Use Value: Maintains <0.5 ns channel-channel skew to prevent shoot-through in half-bridge configurations during rapid switching transitions. |
| Onboard Charger (OBC) | Industrial Motor Drive |
|
Use Scenario: Isolating digital control signals between AC/DC PFC stage and DC/DC LLC converter in bidirectional OBCs. IC Role / Device Role / Timing Role: Reinforced-isolation barrier for UART, SPI, and GPIO signals operating across 1000 VDC working voltage zones. Use Value: Meets reinforced insulation requirements per IEC 62368-1 and VDE 0884-10 without external creepage extenders or potting. |
Use Scenario: Providing galvanic separation for encoder feedback, current sensing, and enable/disable commands in servo drives. IC Role / Device Role / Timing Role: Dual-channel isolator with Schmitt-trigger inputs rejecting >50 kV/µs transients induced by 3-phase motor commutation. Use Value: Eliminates need for external RC filters or optocoupler-based redundancy, reducing BOM count and board space by 40%. |
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 |
|---|---|---|---|
| ADUM2201BRWZ | 2.5 kVRMS basic isolation; 25 Mbps max data rate; SOIC-8 package; no AEC-Q100 qualification. | Suitable for non-automotive industrial PLC I/O modules but lacks reinforced insulation and EV-grade reliability. | Choose when cost sensitivity outweighs 5 kVRMS and 150 Mbps requirements; verify layout for lower CMTI (25 kV/µs). |
| ISO7721FDWR | 5 kVRMS reinforced; 100 Mbps; SOIC-8; AEC-Q100 Grade 1; 11 ns max propagation delay. | Matches SI8620BT-AS in safety rating and automotive qualification but has lower speed and single-supply operation only. | Prefer for space-constrained designs where 100 Mbps suffices and dual-supply flexibility is not required. |
Compared with ADUM2201BRWZ and ISO7721FDWR, SI8620BT-AS uniquely combines 150 Mbps speed, 5 kVRMS reinforced isolation, AEC-Q100 Grade 1, and dual independent supplies - making it the only option qualified for real-time gate-drive feedback in 800 V traction inverters.
Availability
SI8620BT-AS is available at Aetrix Electronics and suitable for battery management systems, traction inverters, and onboard chargers requiring stable component supply with automotive-grade traceability and long-term lifecycle support.
Supply support for SI8620BT-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 isolation in automotive electrification and industrial power systems, emphasizing reinforced safety, ultra-low power, and RF-based timing stability over legacy optocouplers.
FAQ
What is the isolation rating and certification status of SI8620BT-AS?
SI8620BT-AS provides 5 kVRMS reinforced isolation, certified to UL 1577 (5000 VRMS, 1 min), VDE 0884-10 (reinforced), IEC 62368-1, and CSA standards. It is rated for 60-year lifetime at rated working voltage and supports 10 kV surge immunity - confirmed in Skyworks DS 206328B Tables 8 and 10. SI8620BT-AS meets full reinforced insulation requirements for primary-secondary barriers in EV charging and battery systems.
Does SI8620BT-AS support independent power supplies on each side?
Yes, SI8620BT-AS supports fully independent VDD1 and VDD2 supplies ranging from 2.5 V to 5.5 V each, enabling true level-shifting between disparate logic domains (e.g., 3.3 V MCU to 5 V ADC). Each side has its own undervoltage lockout with 2.24 V threshold and 70 mV hysteresis, allowing asymmetric power sequencing - a key feature documented in Section 4.2 of the SI8620BT-AS datasheet.
What is the fail-safe behavior of SI8620BT-AS during input-side power loss?
SI8620BT-AS is configured as a default-high fail-safe device: when VDD1 is unpowered but VDD2 remains active, outputs B1 and B2 remain logic high. This behavior is factory-set per ordering code 'BT' and ensures safe diagnostic signaling in BMS and inverter fault-handling circuits - explicitly defined in Table 3 and Section 4.4 of the SI8620BT-AS datasheet.
How does SI8620BT-AS achieve high noise immunity in motor drive applications?
SI8620BT-AS achieves 100 kV/µs common-mode transient immunity (CMTI) via its RF modulation architecture and differential receiver design, validated per Figure 13 test setup. Combined with Schmitt-trigger inputs (0.44 V hysteresis) and 50 Ω matched output drivers, it rejects fast transients from IGBT/SiC switching - critical for maintaining data integrity in traction inverter gate-drive loops where dv/dt exceeds 50 kV/µs.
Is SI8620BT-AS qualified for automotive applications?
Yes, SI8620BT-AS is AEC-Q100 Grade 1 qualified (–40°C to +125°C), with AIAG-compliant PPAP documentation and IMDS/CAMDS listings. It is designated for automotive-grade use in onboard chargers, battery management systems, and traction inverters - as stated in the "Automotive Applications" section and Safety Regulatory Approvals table of the SI8620BT-AS datasheet.
SI8620BT-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):
- 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
SI8620BT-AS FAQ
1.How can I place an order for SI8620BT-AS through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8620BT-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 SI8620BT-AS reliable?
The price and inventory of SI8620BT-AS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8620BT-AS is usually 5 days.
3.What payment methods are accepted for SI8620BT-AS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8620BT-AS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8620BT-AS?
SI8620BT-AS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8620BT-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 SI8620BT-AS?
For technical support, including SI8620BT-AS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8620BT-AS requirements.
6.How does Aetrix verify that SI8620BT-AS is sourced from the original manufacturer or authorized distributors?
All SI8620BT-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 SI8620BT-AS meets industry standards.
7.What is the process for return or replacement of SI8620BT-AS?
All SI8620BT-AS units undergo pre-shipment inspection (PSI). If there is an issue with SI8620BT-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 SI8620BT-AS part is unused and in its original packaging.
Return procedure for SI8620BT-AS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8620BT-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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