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Skyworks Solutions Inc. SI8652BB-AU
- Part No.:
- SI8652BB-AU
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI8652BB-AU.pdf
- Description:
- AUTOMOTIVE 2.5 KV 3 FORWARD & 2
- Quantity:
- Payment:
- Shipping:
Inventory:1,838
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Product details
Overview
SI8652BB-AU from Skyworks is a five-channel automotive-grade digital isolator with 3 input channels on VDD1 side and 2 output channels on VDD2 side, supporting up to 150 Mbps data rate, <10 ns propagation delay, and 2.5 kVRMS isolation. It features Schmitt trigger inputs, tri-state outputs with enable control, and fail-safe low-default output state-designed for high-noise motor control and battery management systems.
For engineers reviewing the SI8652BB-AU datasheet, SI8652BB-AU pinout, SI8652BB-AU application, or SI8652BB-AU equivalent, this page delivers verified electrical specs, QSOP-16 package details, fail-safe behavior under power loss, and automotive-qualified timing performance across –40°C to +125°C.
Technical Context
The SI8652BB-AU implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical coupling. Its dual-enable architecture (EN1 on Side A, EN2 on Side B) independently controls three input-driven outputs (A4, A5) and two output-driven channels (B1–B3).
It operates across 2.5–5.5 V supplies on both sides, maintains stable timing over temperature (±0.5 ns channel skew, ±2 ns propagation skew), and meets AEC-Q100 Grade 1 requirements with AIAG-compliant PPAP documentation and IMDS/CAMDS support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 5 total: 3 inputs on VDD1 side, 2 outputs on VDD2 side |
| Max Data Rate | 150 Mbps - supports high-speed serial interfaces like SPI, RS-485, and isolated ADC/DAC links |
| Propagation Delay | 8 ns typical - enables precise timing in closed-loop motor control and real-time BMS communication |
| Isolation Rating | 2.5 kVRMS - certified to UL 1577, VDE 0884-10, CSA 5A, and IEC 62368-1 reinforced insulation standards |
| Supply Voltage | 2.5–5.5 V per side - allows interoperability with 3.3 V microcontrollers and 5 V analog subsystems |
| Fail-Safe Default | Low output during VDD1 loss - ensures safe shutdown of downstream drivers in power-inverter gate control |
| CMTI | 50 kV/µs minimum - suppresses false triggering in high-dV/dt environments like traction inverters |
Pinout & Package
SI8652BB-AU is housed in a RoHS-compliant QSOP-16 package (5.3 mm × 10.2 mm, 1.0 mm height), optimized for high-density automotive PCB layouts and compatible with JEDEC J-STD-020C reflow profiles (260 °C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side supply | Power for input logic and channel transmitter; must be ≥2.5 V for valid operation |
| GND1 | Input-side ground | Reference for all Side A signals; requires local 0.1 µF bypass capacitor |
| A1–A3 | Input channels | Digital inputs with Schmitt trigger thresholds (VT+ = 1.67 V typ, VT– = 1.23 V typ) |
| EN1 | Side A enable | Active-high control for A4/A5 outputs; internal 2 µA pull-up allows floating use in low-noise designs |
| A4, A5 | Output channels (Side A) | Isolated outputs driven by Side A inputs; tri-stated when EN1 = low |
| VDD2 | Output-side supply | Power for receiver logic and output drivers; independent of VDD1 for true galvanic isolation |
| GND2 | Output-side ground | Reference for all Side B signals; isolated from GND1 by 2.5 kVRMS barrier |
| B1–B3 | Output channels (Side B) | Isolated outputs driven by A1–A3; default low during VDD1 undervoltage (fail-safe mode) |
| EN2 | Side B enable | Active-high control for B1–B3; internal 2 µA pull-up; disabled state forces outputs to high-impedance |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation | Eliminates LED aging and temperature drift issues of optocouplers; no start-up delay or initialization required |
| Selectably fail-safe output | Factory-configured low-default state ensures predictable shutdown of gate drivers during primary-side power loss |
| Ultra-low power at 100 Mbps | 11.7 mA (VDD1) + 15.0 mA (VDD2) at 5 V - reduces thermal load in sealed automotive enclosures |
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C), full automotive process flow, zero-defect methodology, PPAP-ready |
| High CMTI immunity | 50 kV/µs common-mode transient rejection - sustains signal integrity in 1000 V bus switching environments |
Applications
| Motor Control Systems | Battery Management Systems |
|---|---|
|
Use Scenario: Isolating PWM signals between MCU and IGBT/SiC gate drivers in EV traction inverters. IC Role / Device Role / Timing Role: Five-channel isolator routing three phase-control inputs (A1–A3) and two feedback outputs (B1–B2) across isolation barrier. Use Value: 8 ns propagation delay and 0.5 ns channel skew preserve dead-time accuracy; 2.5 kVRMS rating meets ISO 26262 ASIL-D system-level requirements. |
Use Scenario: Communicating cell voltage and temperature data from high-voltage battery stack to MCU via isolated SPI. IC Role / Device Role / Timing Role: Provides bidirectional isolation for SPI clock/MOSI/MISO lines while maintaining fail-safe low default on fault detection lines. Use Value: 150 Mbps capability supports fast sampling of 96-cell stacks; AEC-Q100 qualification ensures reliability over 15-year vehicle lifetime. |
| On-Board Chargers | Traction Inverters |
|
Use Scenario: Isolating digital control signals between AC/DC controller and DC/DC converter stages in OBC modules. IC Role / Device Role / Timing Role: Routes enable/status signals (EN1/EN2) and isolated feedback (B1–B3) across 400–800 V barriers. Use Value: Tri-state outputs prevent back-driving during partial power loss; 50 kV/µs CMTI rejects noise from high-frequency LLC resonant converters. |
Use Scenario: Protecting MCU GPIOs from high-voltage transients during IGBT switching in 400 kW inverters. IC Role / Device Role / Timing Role: Isolates gate drive enable (EN2), fault reporting (B1), and current sense interface (A4/A5) with independent supply domains. Use Value: Dual enable pins allow synchronized shutdown of upper/lower switches; QSOP-16 footprint fits constrained inverter control board layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8652BB-IS1 | Industrial-grade (–I suffix), same pinout and electrical specs, but lacks AEC-Q100 qualification and PPAP documentation | Approved for industrial automation and medical equipment; not suitable for ASIL-B/C automotive systems | Select SI8652BB-IS1 only for cost-sensitive non-automotive designs requiring identical functionality without automotive traceability |
| ADUM141DBRZ | Analog Devices quad-channel isolator; 150 Mbps, 10 ns delay, 3.75 kVRMS, SOIC-16; no dual-enable or fail-safe low option | Lacks native 5-channel configuration and programmable fail-safe default; requires external pull-downs for low-default behavior | Choose ADUM141DBRZ only if four-channel count suffices and SOIC-16 layout compatibility is prioritized over automotive compliance |
Compared with SI8652BB-IS1, the SI8652BB-AU adds mandatory automotive process controls, PPAP deliverables, and IMDS reporting-critical for OEM Tier-1 validation. Versus ADUM141DBRZ, it provides native 5-channel topology with dedicated fail-safe low and dual-enable control, reducing external component count in BMS and inverter designs.
Availability
SI8652BB-AU is available at Aetrix Electronics and suitable for automotive battery management systems, traction inverters, and on-board chargers requiring stable component supply with full automotive traceability and long-term lifecycle support.
Supply support for SI8652BB-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 leader in high-performance analog semiconductors, specializing in RF, timing, and isolation technologies for wireless, automotive, and industrial markets.
The Si865x family was designed specifically for automotive and industrial systems demanding high-speed, low-power, and safety-certified galvanic isolation-enabling next-generation EV powertrain and energy storage architectures.
FAQ
What is the isolation rating and safety certification status of the SI8652BB-AU?
The SI8652BB-AU provides 2.5 kVRMS isolation and is certified to UL 1577, VDE 0884-10, CSA Component Notice 5A, and IEC 62368-1 (reinforced insulation). These approvals confirm its suitability for functional isolation in automotive high-voltage systems up to 400 V working voltage, as required in ISO 26262-compliant designs.
Does the SI8652BB-AU require external components for reliable operation?
The SI8652BB-AU requires only two 0.1 µF ceramic bypass capacitors-one between VDD1 and GND1, and another between VDD2 and GND2-placed adjacent to the QSOP-16 package. No external pull-ups, pull-downs, or termination resistors are needed, as Schmitt trigger inputs and 50 Ω nominal output impedance are integrated.
How does the fail-safe low default mode function in the SI8652BB-AU?
When VDD1 drops below UVLO threshold (≈2.2 V), the SI8652BB-AU forces B1–B3 outputs to logic low while maintaining VDD2 power-ensuring gate drivers or fault monitors enter a known safe state. This behavior is factory-programmed and cannot be altered in-circuit.
What is the maximum operating temperature range for the SI8652BB-AU?
The SI8652BB-AU is rated for continuous operation from –40°C to +125°C ambient, meeting AEC-Q100 Grade 1 requirements. Its propagation delay remains stable across this range (±0.5 ns skew), and supply current increases only marginally-enabling deployment in engine bay and power module control units.
Can the SI8652BB-AU replace optocouplers in existing designs without layout changes?
Yes-the SI8652BB-AU in QSOP-16 matches standard optocoupler footprints (e.g., 16-pin wide-body SOIC pitch), and its pin-compatible enable and output structure allows direct substitution. However, verify that existing 0.1 µF bypass caps are placed within 2 mm of VDD/GND pins to maintain noise immunity.
SI8652BB-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:
- 3/2
- 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
SI8652BB-AU FAQ
1.How can I place an order for SI8652BB-AU through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8652BB-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 SI8652BB-AU reliable?
The price and inventory of SI8652BB-AU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8652BB-AU is usually 5 days.
3.What payment methods are accepted for SI8652BB-AU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8652BB-AU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8652BB-AU?
SI8652BB-AU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8652BB-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 SI8652BB-AU?
For technical support, including SI8652BB-AU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8652BB-AU requirements.
6.How does Aetrix verify that SI8652BB-AU is sourced from the original manufacturer or authorized distributors?
All SI8652BB-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 SI8652BB-AU meets industry standards.
7.What is the process for return or replacement of SI8652BB-AU?
All SI8652BB-AU units undergo pre-shipment inspection (PSI). If there is an issue with SI8652BB-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 SI8652BB-AU part is unused and in its original packaging.
Return procedure for SI8652BB-AU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8652BB-AU Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
Skyworks Solutions Inc.
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ISO7720FDR
Texas Instruments
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ISO7721DR
Texas Instruments
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ISO7721FDR
Texas Instruments
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SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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