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Skyworks Solutions Inc. SI8650EB-AU
- Part No.:
- SI8650EB-AU
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI8650EB-AU.pdf
- Description:
- AUTOMOTIVE 2.5 KV 5 FORWARD CHAN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SI8650EB-AU from Skyworks is a five-channel, unidirectional digital isolator with 5 kVRMS reinforced insulation, Schmitt-trigger inputs, tri-state outputs controlled by enable pins, and selectable high-fail-safe default output state. It operates from 2.5–5.5 V on both sides, supports up to 150 Mbps data rate, achieves <10 ns propagation delay, and is qualified for automotive applications per AEC-Q100. It is used in battery management systems and traction inverters requiring robust galvanic isolation.
For engineers reviewing the SI8650EB-AU datasheet, SI8650EB-AU pinout, SI8650EB-AU application, or SI8650EB-AU equivalent, this page delivers verified electrical specs, fail-safe behavior under power loss, CMTI of 50 kV/µs, SOIC-16 wide-body package details, and automotive-grade qualification evidence - all critical for high-reliability isolated signal transmission in EV powertrain designs.
Technical Context
The SI8650EB-AU implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling deterministic timing without clock recovery circuitry. Its architecture provides inherent noise immunity via Schmitt-trigger inputs and supports independent undervoltage lockout (UVLO) on both VDD1 and VDD2 sides.
All five channels are input-only on Side A (VDD1) and output-only on Side B (VDD2), with EN2 controlling all five B-side outputs. The device enters high-impedance state when EN2 = L, and defaults to logic-high outputs during VDD1 power loss due to its "E" ordering option (high-fail-safe mode).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 5 unidirectional, A-to-B only (no reverse channels) |
| Max Data Rate | 150 Mbps - supports high-speed CAN FD, SPI, and isolated ADC interface timing |
| Propagation Delay | 5–13 ns - enables sub-10 ns timing-critical feedback loops in motor control |
| Isolation Rating | 5 kVRMS reinforced - certified to UL, VDE, CSA, and CQC standards for EV traction systems |
| Supply Voltage | 2.5–5.5 V per side - interoperable with 3.3 V microcontrollers and 5 V analog front-ends |
| CMTI | 50 kV/µs - suppresses common-mode transients in high-dV/dt inverter gate drive environments |
| Fail-Safe Default | High (logic-H) - ensures safe deactivation of downstream drivers during input-side power loss |
| AEC-Q100 Grade | Qualified to Grade 0 (–40°C to +125°C) - validated for under-hood automotive use |
Pinout & Package
SI8650EB-AU is housed in a RoHS-compliant 16-pin wide-body SOIC package (WB SOIC-16), providing 8.3 mm creepage and clearance for 5 kVRMS reinforced insulation. Pin 1 is marked with a dot; the package is compatible with JEDEC MS-013AC and supports peak reflow at 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side supply | Power for channel inputs and internal transmitter; UVLO threshold 2.24 V (typ) |
| GND1 | Input-side ground | Reference for Side A signals; must be separated from GND2 by isolation barrier |
| INA1–INA5 | Input channels | 5 Schmitt-trigger digital inputs referenced to VDD1/GND1; no external pull-ups required |
| VDD2 | Output-side supply | Power for output drivers and receiver; independent of VDD1; enables dual-supply system partitioning |
| GND2 | Output-side ground | Reference for Side B outputs; galvanically isolated from GND1 |
| EN2 | Output enable control | Active-high enable for all five B-side outputs; drives outputs to Hi-Z when low |
| OUTB1–OUTB5 | Isolated outputs | 5 CMOS-compatible outputs with 50 Ω nominal impedance; default high during VDD1 loss |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation barrier | Eliminates LED aging and temperature drift issues of optocouplers; enables 60-year lifetime at rated voltage |
| Tri-state output control | Single EN2 pin disables all five outputs simultaneously - simplifies bus arbitration and power sequencing |
| High-fail-safe default | Outputs remain logic-H during VDD1 brownout - prevents unintended activation of safety-critical loads |
| Ultra-low power at 100 Mbps | 5.5 mA per channel at 5 V / 100 Mbps - reduces thermal load in densely packed BMS modules |
| Automotive process flow | Full AEC-Q100 Grade 0 qualification with AIAG PPAP, IMDS/CAMDS compliance, and zero-defect methodology |
| Robust EMC performance | 35–50 kV/µs CMTI and ±10 µA input leakage - maintains integrity in noisy inverter switching environments |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
Use Scenario: Isolating cell voltage monitoring ADCs and pack-level communication interfaces in high-voltage EV battery packs. IC Role / Device Role / Timing Role: Five-channel unidirectional isolator transmitting analog front-end digitized data and status flags from high-voltage domain to MCU domain. Use Value: 5 kVRMS reinforced insulation meets IEC 62368-1 and GB4943.1 requirements; high-fail-safe default prevents false fault clearing during cell sensor power interruption. |
Use Scenario: Transmitting PWM gate drive signals and fault feedback between inverter MCU and IGBT/SiC driver stages. IC Role / Device Role / Timing Role: Providing timing-aligned, low-skew isolation for three-phase upper/lower gate signals plus two protection status lines. Use Value: 0.5 ns channel-channel skew and 2 ns propagation delay skew ensure precise phase alignment; 50 kV/µs CMTI withstands fast dV/dt from SiC switching. |
| On-Board Charger (OBC) | Charging Station Communication |
Use Scenario: Isolating AC-DC controller signals and DC-link voltage sensing in bidirectional OBC topologies. IC Role / Device Role / Timing Role: Delivering isolated feedback for primary-side regulation and secondary-side telemetry reporting across 800 V DC bus. Use Value: Dual 2.5–5.5 V supply range allows direct interfacing with 3.3 V MCU and 5 V analog sensors; AEC-Q100 qualification supports automotive OBC integration. |
Use Scenario: Enabling secure, isolated communication between charging station controller and vehicle battery management unit via ISO 15118 protocols. IC Role / Device Role / Timing Role: Isolating UART or CAN FD physical layer signals between safety-critical charging control domain and user-accessible network interface. Use Value: UL/VDE/CSA/CQC certifications satisfy regional EVSE safety mandates; 150 Mbps capability future-proofs for higher-layer protocol upgrades. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8650BB-AU | Same 5-channel, 5 kVRMS, WB SOIC-16 package, but low-fail-safe (default-L) output state | Suitable where active-low reset or disable is required during input-side power loss | Select SI8650BB-AU only if system logic requires default-low assertion on power failure |
| ISO7751FDWR | TI device: 5-channel, 5 kVRMS, SOIC-16 wide, but lower CMTI (85 kV/µs), no AEC-Q100 Grade 0 rating | Industrial use only; not qualified for automotive under-hood deployment | Choose ISO7751FDWR only for cost-sensitive industrial applications without automotive qualification needs |
Compared with SI8650BB-AU, SI8650EB-AU provides fail-safe high assertion critical for safety shutdowns; compared with ISO7751FDWR, it delivers AEC-Q100 Grade 0 validation and guaranteed 50 kV/µs CMTI - essential for EV powertrain reliability under EMI stress.
Availability
SI8650EB-AU is available at Aetrix Electronics and suitable for battery management systems, traction inverters, and on-board chargers requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.
Supply support for SI8650EB-AU 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 SI865x family was designed specifically for high-reliability automotive and industrial isolation, emphasizing low-power operation, precise timing, and reinforced safety certification - directly addressing EV powertrain and renewable energy system requirements.
FAQ
What is the fail-safe behavior of SI8650EB-AU during input-side power loss?
SI8650EB-AU is ordered with the "E" suffix, indicating high-fail-safe mode. When VDD1 is unpowered but VDD2 remains active, all five OUTB outputs default to logic-high state within 1 µs after VDD2 powers up. This behavior is hardwired via internal pull-ups and ensures safe deactivation of downstream drivers or controllers during sensor-side brownout events in battery management systems.
Does SI8650EB-AU support bidirectional communication?
No, SI8650EB-AU is strictly unidirectional: five input channels (INA1–INA5) on the VDD1 side and five output channels (OUTB1–OUTB5) on the VDD2 side. It does not include reverse-direction channels. For bidirectional isolation, Skyworks offers SI8651 or SI8652 variants - but SI8650EB-AU itself provides only A-to-B signal transfer.
What is the maximum recommended capacitive load for SI8650EB-AU outputs?
The SI8650EB-AU outputs are characterized with 15 pF load in timing specifications (e.g., propagation delay, rise/fall time). While the nominal output impedance is ~50 Ω, driving >30 pF may degrade edge rates and increase jitter. For reliable 150 Mbps operation, keep total node capacitance ≤15 pF - achieved via short PCB traces and minimal stubs, or external series termination if needed.
How does the EN2 pin function on SI8650EB-AU?
EN2 is an active-high enable input located on the VDD2 (output) side. When EN2 = H, all five OUTB outputs actively drive their logic states. When EN2 = L, all outputs enter high-impedance (Hi-Z) state - effectively disconnecting the isolated side from downstream circuitry. This enables centralized bus control and safe power sequencing in multi-isolator systems.
Is SI8650EB-AU pin-compatible with other SI865x variants in the same package?
Yes, all SI8650/51/52/55 devices in the 16-pin wide-body SOIC package share identical pinouts, including SI8650EB-AU. However, functional differences exist: SI8650 has 5 inputs/0 outputs, SI8651 has 4/1, SI8652 has 3/2, and SI8655 has 5/0 with 1 kVRMS rating. Electrical compatibility requires matching channel count and isolation rating - SI8650EB-AU is not functionally interchangeable with SI8651xx or SI8652xx without design review.
SI8650EB-AU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 5
- Inputs - Side 1/Side 2:
- 5/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- 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-QSOP
SI8650EB-AU FAQ
1.How can I place an order for SI8650EB-AU through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8650EB-AU 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 SI8650EB-AU reliable?
The price and inventory of SI8650EB-AU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8650EB-AU is usually 5 days.
3.What payment methods are accepted for SI8650EB-AU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8650EB-AU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8650EB-AU?
SI8650EB-AU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8650EB-AU 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 SI8650EB-AU?
For technical support, including SI8650EB-AU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8650EB-AU requirements.
6.How does Aetrix verify that SI8650EB-AU is sourced from the original manufacturer or authorized distributors?
All SI8650EB-AU 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 SI8650EB-AU meets industry standards.
7.What is the process for return or replacement of SI8650EB-AU?
All SI8650EB-AU units undergo pre-shipment inspection (PSI). If there is an issue with SI8650EB-AU, 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 SI8650EB-AU part is unused and in its original packaging.
Return procedure for SI8650EB-AU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8650EB-AU 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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