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Skyworks Solutions Inc. SI88322BC-ASR
- Part No.:
- SI88322BC-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI88322BC-ASR.pdf
- Description:
- ELECTRONIC INTEGRATED CIRCUITS
- Quantity:
- Payment:
- Shipping:
Inventory:4,704
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Product details
Overview
SI88322BC-ASR from Skyworks Solutions is a dual-channel digital isolator with integrated isolated DC-DC converter, delivering up to 2 W of regulated 3.3 V or 5.0 V output power across 5 kVRMS reinforced isolation. It features two unidirectional high-speed CMOS isolation channels (0–100 Mbps), 23 ns max propagation delay, and operates over –40 °C to +125 °C. It is used in motor control inverters where compact, self-powered signal isolation is required between gate drivers and MCU.
For engineers reviewing the SI88322BC-ASR datasheet, SI88322BC-ASR pinout, SI88322BC-ASR application, or SI88322BC-ASR equivalent, this page delivers verified specifications, SOIC-20 wide-body package details, automotive-grade AEC-Q100 qualification status, and validated alternative options for industrial and automotive isolated power/signal designs.
Technical Context
The SI88322BC-ASR implements RF-based on/off keying modulation across a silicon dioxide capacitive barrier for robust noise immunity and magnetic field rejection. Its dual-channel architecture supports independent forward/reverse data paths with precise timing control and no startup initialization.
The integrated flyback-derived DC-DC controller operates in peak current mode with closed-loop secondary-side voltage sensing via VSNS, enabling superior line/load regulation without optocouplers. It supports soft-start (SS pin), shutdown (SH_FC pin), and programmable switching frequency (200–800 kHz) via external RC on SH_FC/SS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000 VRMS for 1 minute - meets UL 1577, VDE 62368-1, and CQC GB4943.1 reinforced insulation requirements. |
| Data Rate | 0–100 Mbps - supports high-speed serial interfaces like SPI, RS-485 transceiver control, and PWM feedback loops. |
| Propagation Delay | 23 ns max - enables tight timing alignment in real-time motor control and fast-loop feedback systems. |
| DC-DC Output Power | 2 W average at 5.0 V - sufficient to power secondary-side logic (e.g., gate drivers, ADCs) without external regulators. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial ambient environments. |
| Transient Immunity | 100 kV/µs typical - ensures reliable operation in noisy inverter and PLC I/O stages with fast-switching transients. |
| AEC-Q100 Grade | Qualified per AEC-Q100 Rev G - supports PPAP documentation and IMDS/CAMDS compliance for automotive OEM use. |
Pinout & Package
SI88322BC-ASR is housed in a RoHS-compliant SOIC-20 wide-body package (10.3 mm × 15.4 mm, 1.27 mm pitch) with creepage/clearance ≥8.3 mm, certified for reinforced insulation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6 | VDDP, VSW, VDDA, GNDA, SH_FC, SS | Primary-side power stage and control: VDDP powers internal switch; VSW drives transformer primary; SH_FC enables shutdown; SS sets soft-start time constant. |
| 7, 8, 13, 14 | A1, A2, B1, B2 | Digital isolation I/O: A1/A2 are forward channels (primary→secondary); B1/B2 are reverse channels (secondary→primary). |
| 9, 10, 11, 12, 15, 16, 17, 18, 19, 20 | GNDB, VDDB, VSNS, COMP, NC, NC, NC, NC, NC, NC | Secondary-side ground/power/feedback: GNDB and VDDB supply isolated logic; VSNS feeds back output voltage; COMP sets loop compensation; remaining pins are no-connect. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based digital isolation | Eliminates startup initialization and provides >100 kV/µs transient immunity without magnetic coupling concerns. |
| Secondary-side voltage sensing | Enables precise regulation (±1.5% typical) without optocouplers or secondary-side bias circuits. |
| Programmable soft-start & shutdown | SS pin capacitor sets ramp time; SH_FC pin allows system-level disable of DC-DC during fault conditions. |
| Integrated peak-current-mode controller | Supports external transformer and Schottky diode for cost-effective, high-efficiency (83% peak) isolated power. |
| AEC-Q100 automotive qualification | Validated for automotive-grade manufacturing flow, including PPAP support and IMDS/CAMDS compliance. |
Applications
| Motor Control Inverters | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Isolating PWM gate drive signals and current-sense feedback between MCU and 3-phase IGBT/SiC modules in EV traction inverters. IC Role / Device Role / Timing Role: Dual-channel isolator provides synchronized forward (PWM) and reverse (fault flag) paths; DC-DC powers isolated gate driver ICs. Use Value: Eliminates need for separate isolated DC-DC and discrete isolators, reducing BOM count and PCB area by >40% versus discrete solutions. |
Use Scenario: Signal isolation between field-side analog/digital I/O and backplane controller in modular PLC chassis. IC Role / Device Role / Timing Role: SI88322BC-ASR supplies isolated 5 V to field-side ADCs and digital input buffers while transmitting status and command data bidirectionally. Use Value: Enables single-component isolation + power for 2-channel I/O pairs, simplifying layout and meeting IEC 61000-4-5 surge immunity requirements. |
| Onboard Charger (OBC) Control | Renewable Energy Inverters |
|
Use Scenario: Isolating AC-DC controller communication and auxiliary power delivery in automotive bidirectional OBCs. IC Role / Device Role / Timing Role: Provides galvanic separation for digital control signals and powers isolated microcontrollers monitoring DC-link voltage/current. Use Value: Meets AEC-Q100 and reinforced insulation requirements while supporting 100 Mbps CAN FD or SPI diagnostics traffic. |
Use Scenario: Interfacing MPPT controller to isolated DC-DC stage and grid-tie inverter in solar string inverters. IC Role / Device Role / Timing Role: Transmits fast-response control commands and receives isolated sensor data; DC-DC powers isolated current shunt amplifiers. Use Value: Delivers 2 W isolated power at 125 °C ambient, enabling compact, convection-cooled designs compliant with UL 1741 SA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel isolated power/signal applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM6210ARWZ | 2-channel isolator + 500 mW isolated DC-DC; SOIC-16; 25 Mbps max data rate; no programmable frequency or soft-start. | Limited to low-power secondary loads (e.g., small logic, sensors); not rated for automotive AEC-Q100. | Select when <500 mW isolated power suffices and AEC-Q100 is not required. |
| ISO7821FDWR | 2-channel isolator only (no DC-DC); SOIC-16; 100 Mbps; 100 kV/µs CMTI; requires external isolated power supply. | Requires separate isolated DC-DC (e.g., SN6501 + transformer), increasing component count and layout complexity. | Select when higher channel count or tighter CMTI is needed, and external power design is acceptable. |
Compared with ADUM6210ARWZ and ISO7821FDWR, SI88322BC-ASR uniquely integrates 2 W isolated power, AEC-Q100 qualification, and 100 Mbps dual-channel isolation in one SOIC-20 package-reducing system-level BOM, footprint, and validation effort for automotive and industrial inverters.
Availability
SI88322BC-ASR is available at Aetrix Electronics and suitable for motor control inverters, industrial PLC I/O modules, onboard chargers, and renewable energy inverters requiring stable component supply, automotive-grade reliability, and integrated isolated power.
Supply support for SI88322BC-ASR 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 Si88x2x family-including SI88322BC-ASR-is designed for high-reliability industrial and automotive applications requiring integrated signal isolation and isolated power in a single package.
FAQ
What is the maximum isolated DC-DC output power of the SI88322BC-ASR?
The SI88322BC-ASR delivers up to 2 W average output power at 5.0 V on the secondary side. This is sufficient to power isolated gate drivers, ADCs, or microcontrollers without external regulators. Peak power capability exceeds 5 W briefly, but sustained operation is rated at 2 W under thermal limits specified in the datasheet.
Does the SI88322BC-ASR support AEC-Q100 qualification for automotive use?
Yes, the SI88322BC-ASR is AEC-Q100 qualified (Grade 0, –40 °C to +125 °C). It is manufactured using automotive-specific process flows and supports AIAG-compliant PPAP documentation, IMDS, and CAMDS listings-making it suitable for EV traction inverters and onboard chargers.
How does the SI88322BC-ASR achieve voltage regulation without optocouplers?
The SI88322BC-ASR uses secondary-side voltage sensing via the VSNS pin, where a resistor divider feeds back the isolated output voltage. The error signal is encoded and transmitted across the isolation barrier to the primary-side controller, enabling precise regulation without optocouplers or secondary-side bias circuitry.
What are the key differences between SI88322BC-ASR and SI88222BC-ASR?
The SI88322BC-ASR uses SH_FC and SS pins for programmable shutdown and soft-start, whereas SI88222BC-ASR uses SH and SS. SI88322BC-ASR also supports wider input voltage ranges (e.g., 3–5.5 V to 24 V) and has different pin assignments for frequency control, making it more flexible for high-voltage configurations.
Can the SI88322BC-ASR operate with an external NMOS power switch for higher input voltages?
No-the SI88322BC-ASR integrates internal power switches and is intended for low-to-mid voltage DC-DC conversion (e.g., 3–5.5 V input). For >5.5 V primary-side inputs, Skyworks recommends Si8842x or Si8862x families, which provide ESW and RSN pins to drive external FETs and sense current.
SI88322BC-ASR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 0/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 40kV/µs
- Data Rate:
- 100Mbps
- Propagation Delay tpLH / tpHL (Max):
- 18ns, 23ns
- Pulse Width Distortion (Max):
- 7ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
SI88322BC-ASR FAQ
1.How can I place an order for SI88322BC-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI88322BC-ASR 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 SI88322BC-ASR reliable?
The price and inventory of SI88322BC-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI88322BC-ASR is usually 5 days.
3.What payment methods are accepted for SI88322BC-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI88322BC-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI88322BC-ASR?
SI88322BC-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI88322BC-ASR 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 SI88322BC-ASR?
For technical support, including SI88322BC-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI88322BC-ASR requirements.
6.How does Aetrix verify that SI88322BC-ASR is sourced from the original manufacturer or authorized distributors?
All SI88322BC-ASR 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 SI88322BC-ASR meets industry standards.
7.What is the process for return or replacement of SI88322BC-ASR?
All SI88322BC-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI88322BC-ASR, 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 SI88322BC-ASR part is unused and in its original packaging.
Return procedure for SI88322BC-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI88322BC-ASR 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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