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Skyworks Solutions Inc. SI88222BC-ASR
- Part No.:
- SI88222BC-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI88222BC-ASR.pdf
- Description:
- ELECTRONIC INTEGRATED CIRCUITS
- Quantity:
- Payment:
- Shipping:
Inventory:2,520
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Product details
Overview
SI88222BC-ASR from Skyworks Solutions is a dual-channel digital isolator with integrated isolated DC-DC converter, delivering up to 5 W peak output power at 3.3 V or 5.0 V, supporting data rates up to 100 Mbps, propagation delay ≤23 ns, and reinforced isolation rated at 5000 VRMS. It serves as a self-powered signal isolator in industrial motor control and EV inverter gate drive circuits.
For engineers reviewing the SI88222BC-ASR datasheet, SI88222BC-ASR pinout, SI88222BC-ASR application, or SI88222BC-ASR equivalent, this page delivers verified technical context, SOIC-16 wide-body package mapping, functional pin roles, automotive-grade AEC-Q100 qualification, and real-world design implications for isolated power + signal integrity in high-noise environments.
Technical Context
The SI88222BC-ASR implements two unidirectional RF-based digital isolation channels using capacitive silicon dioxide barriers, with on-off keying modulation for superior noise immunity and magnetic field rejection. Its integrated flyback-derived DC-DC controller operates in peak current mode, senses output voltage on the secondary side via VSNS, and transmits error feedback across the barrier without optocouplers.
It supports low-voltage input (3–5.5 V) to isolated 3/5 V output configurations, includes shutdown (SH), soft-start (SS), and internal power switches (VSW), and achieves 83% peak efficiency when paired with an external power switch. Thermal shutdown and cycle-skipping at light loads are built-in.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000 VRMS for 1 minute - meets UL 1577, CSA 62368-1, VDE 62368-1 reinforced insulation requirements. |
| Data Rate | Up to 100 Mbps - enables high-speed serial interface isolation (e.g., SPI, RS-485 PHY control) without timing bottlenecks. |
| Propagation Delay | ≤23 ns max - ensures tight timing alignment between primary and secondary logic domains in real-time control loops. |
| DC-DC Output Power | Up to 5 W peak - powers secondary-side MCU, gate drivers, or sensors without external isolated supply. |
| Operating Temp | –40 °C to +125 °C - qualified for under-hood automotive and industrial ambient conditions. |
| AEC-Q100 Grade | Qualified - supports PPAP documentation, IMDS/CAMDS compliance, and automotive production traceability. |
| EMI Performance | Dithered switching frequency + integrated feedback - reduces radiated emissions without external filtering overhead. |
Pinout & Package
SI88222BC-ASR uses a RoHS-compliant SOIC-16 wide-body package (10.3 mm × 10.3 mm, 1.27 mm pitch) with creepage/clearance optimized for 5000 VRMS isolation. Pin 1 marked, exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GNDP | Primary-side power ground | Reference for VDDP and internal switch driver; must be short-traced to VDDP bypass capacitor. |
| 2 VSW | Internal power switch output | Drives transformer primary directly; supports ≤5.5 V input configurations without external FET. |
| 3 VDDP | Primary-side power supply | Input for DC-DC controller (3–5.5 V); requires local 10 µF ceramic bypass to GNDP. |
| 4 VDDA | Primary-side signal supply | Powers A1/A2 digital inputs; independent of VDDP but shares same domain; UVLO threshold 2.7 V min. |
| 5 GNDA | Primary-side signal ground | Reference for A1/A2 I/O; must be tied to GNDP with minimal impedance for noise coupling control. |
| 6 SH | Shutdown control | Active-high disable for DC-DC; pull to GND for normal operation; no effect on digital channel functionality. |
| 7 GNDB | Secondary-side signal ground | Reference for B1/B2 outputs; galvanically isolated from GNDA; forms safety barrier with ≥8 mm creepage. |
| 8 VDDB | Secondary-side signal supply | Powered by internal DC-DC; supplies B1/B2 outputs; regulated 3.3/5.0 V output selectable at design stage. |
| 9 VSNS | Secondary-side feedback input | Connects to resistor divider from VDDB; sets output voltage precisely (e.g., R1=100 kΩ, R2=20 kΩ → 5.0 V). |
| 10 COMP | Compensation node | RC network (RCOMP=49.9 kΩ + CCOMP) stabilizes DC-DC loop; critical for load transient response and stability. |
| 11 NC | No connect | Not bonded; leave floating or grounded per layout best practice; no electrical function. |
| 12 A1 | Primary-side input channel 1 | CMOS-compatible digital input (2.5/3.3/5 V logic); drives HF XMTR block; no external bias required. |
| 13 A2 | Primary-side input channel 2 | Independent unidirectional input; identical specs to A1; supports dual-signal isolation (e.g., PWM + fault flag). |
| 14 B1 | Secondary-side output channel 1 | CMOS output referenced to VDDB/GNDB; 100 Mbps capable; 18 ns typical propagation delay. |
| 15 B2 | Secondary-side output channel 2 | Independent unidirectional output; matches B1 timing and drive strength; supports isolated feedback paths. |
| 16 DNC/VREGB | Do-not-connect / reference output | Internally Zener-clamped; use only if VDDB > 5.5 V; otherwise leave unconnected per datasheet guidance. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based capacitive isolation | Eliminates optocoupler aging and CMTI limitations; achieves 100 kV/µs common-mode transient immunity. |
| Integrated secondary-side sensing | VSNS feedback eliminates optocoupler bias circuitry, improving line/load regulation and reducing BOM count. |
| Programmable soft-start (SS) | External capacitor sets startup ramp time, limiting inrush into VDDB and preventing secondary-side brownout. |
| Reinforced isolation certification | UL, CSA, VDE, and CQC approvals confirm suitability for functional safety applications up to SIL-3 systems. |
| Automotive-grade manufacturing flow | AEC-Q100 qualification with AIAG PPAP support ensures zero-defect delivery for EV traction inverters and ADAS ECUs. |
Applications
| Industrial Motor Control | EV Traction Inverter |
|---|---|
|
Use Scenario: Isolating PWM gate signals and current-sense feedback between MCU and IGBT/SiC half-bridge drivers in servo drives. IC Role / Device Role / Timing Role: SI88222BC-ASR provides dual-channel signal isolation plus localized 5 V supply for gate driver ICs, eliminating separate isolated DC-DC. Use Value: Reduces component count by 3+ parts (isolator + regulator + LDO), improves timing skew (<23 ns), and sustains operation at 125 °C ambient. |
Use Scenario: Providing isolated control and monitoring interfaces in battery management systems and inverter control units. IC Role / Device Role / Timing Role: SI88222BC-ASR isolates MCU SPI commands to isolated ADCs and delivers regulated 3.3 V to isolated CAN transceivers. Use Value: Enables single-chip solution for signal + power isolation, meeting ASIL-B diagnostic coverage requirements via certified architecture. |
| PLC Digital I/O Modules | Isolated Data Acquisition |
|
Use Scenario: Galvanic separation of field-side digital inputs (24 V dry contact) and controller-side logic in modular PLC backplanes. IC Role / Device Role / Timing Role: SI88222BC-ASR isolates status signals while powering downstream level shifters and opto-LED drivers from VDDB. Use Value: Supports 5000 VRMS working voltage across DIN-rail-mounted modules, simplifying CE/UL system certification. |
Use Scenario: Isolating analog front-end sensor interfaces (e.g., isolated sigma-delta modulators) from host processor in high-precision test equipment. IC Role / Device Role / Timing Role: SI88222BC-ASR transmits clock/data streams across barrier while supplying clean 5.0 V to modulator ASICs. Use Value: Maintains <1 LSB error in 24-bit measurements by eliminating ground-loop noise and supply coupling. |
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 |
|---|---|---|---|
| ADUM6223ARWZ | 2-channel isolator + 500 mW isolated DC-DC; lower power, no programmable frequency or soft-start. | Suitable for low-power microcontroller interfaces; insufficient for driving gate drivers or multi-load VDDB rails. | Select when total isolated load ≤500 mW and AEC-Q100 not required. |
| ISO7821FDWWR | 2-channel isolator only - no integrated DC-DC; requires external isolated supply (e.g., ISOW7841). | Higher BOM count and layout complexity; better for designs already using discrete isolated power stages. | Select when system-level power architecture mandates separate DC-DC control or >5 W output is needed. |
Compared with ADUM6223ARWZ and ISO7821FDWWR, the SI88222BC-ASR uniquely integrates 5 W isolated power with AEC-Q100 qualification and programmable soft-start, making it optimal for automotive inverter control and industrial drives where self-contained, high-reliability isolation is mandatory.
Availability
SI88222BC-ASR is available at Aetrix Electronics and suitable for industrial motor control, EV traction inverters, and PLC digital I/O modules requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.
Supply support for SI88222BC-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 for high-reliability markets.
The Si88x2x product line was designed specifically for self-powered digital isolation in safety-critical industrial and automotive systems, combining robust capacitive isolation with integrated, certified DC-DC conversion in compact wide-body packages.
FAQ
What is the maximum continuous output power supported by the SI88222BC-ASR's integrated DC-DC converter?
The SI88222BC-ASR supports up to 5 W peak output power, with 2 W average output power at 5.0 V under typical operating conditions. This rating assumes proper thermal management, validated external components (e.g., UMEC UTB02240s transformer), and SOIC-16 wide-body mounting on a 2-layer PCB with 2 oz copper. Derating applies above 85 °C ambient.
Does the SI88222BC-ASR require external components to operate its DC-DC converter?
Yes - the SI88222BC-ASR requires an external miniature transformer (e.g., Coilcraft TA7618-AL), input/output capacitors (C2, C3), feedback resistors (R1/R2), and a compensation network (RCOMP + CCOMP) on the COMP pin. The device integrates internal power switches (VSW), eliminating need for external MOSFETs in 3–5.5 V input applications.
Can the SI88222BC-ASR be used in high-voltage input configurations (e.g., 24 V primary)?
No - the SI88222BC-ASR is specified only for 3–5.5 V primary-side input (VDDP). For 24 V input applications, Skyworks recommends Si88422BC-ASR or Si88622BC-ASR, which feature external switch drivers (ESW), current sense (RSN), and support for high-voltage flyback topologies.
How does the SI88222BC-ASR achieve its 100 kV/µs common-mode transient immunity (CMTI)?
The SI88222BC-ASR achieves 100 kV/µs CMTI through its proprietary RF-based capacitive isolation architecture using silicon dioxide barriers, combined with differential RF receiver design and on-chip noise filtering. This performance is measured per IEC 61000-4-4 and is intrinsic to the die structure - no external components enhance CMTI.
Is the SI88222BC-ASR pin-compatible with other Si8822x variants like SI88220 or SI88221?
No - SI88222BC-ASR has a unique pinout among Si8822x devices: pins 12–15 are assigned A1/A2/B1/B2, whereas SI88220 uses pins 12–13 for A1/A2 and 14–15 for HF XMTR/RCVR. Layouts must be redesigned when substituting across Si8822x variants; refer to Figure 1 in datasheet 206584B for exact mapping.
SI88222BC-ASR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-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:
- 16-SOIC
SI88222BC-ASR FAQ
1.How can I place an order for SI88222BC-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI88222BC-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 SI88222BC-ASR reliable?
The price and inventory of SI88222BC-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI88222BC-ASR is usually 5 days.
3.What payment methods are accepted for SI88222BC-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI88222BC-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI88222BC-ASR?
SI88222BC-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI88222BC-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 SI88222BC-ASR?
For technical support, including SI88222BC-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI88222BC-ASR requirements.
6.How does Aetrix verify that SI88222BC-ASR is sourced from the original manufacturer or authorized distributors?
All SI88222BC-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 SI88222BC-ASR meets industry standards.
7.What is the process for return or replacement of SI88222BC-ASR?
All SI88222BC-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI88222BC-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 SI88222BC-ASR part is unused and in its original packaging.
Return procedure for SI88222BC-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI88222BC-ASR Tags
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ISO1212DBQR
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ISO6721BDR
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SI8710AC-B-ISR
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ISO7720FDR
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SI8710CC-B-ISR
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ISO6741FQDWRQ1
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ISO7721DWVR
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ISO7741DWR
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ISO7741FDWR
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