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Skyworks Solutions Inc. SI88222BC-ISR
- Part No.:
- SI88222BC-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI88222BC-ISR.pdf
- Description:
- DGTL ISO 5000VRMS 2CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,202
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Product details
Overview
SI88222BC-ISR 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 5000 VRMS isolation rating. It serves as a self-powered signal isolator in industrial motor control and EV inverter gate drive circuits.
For engineers reviewing the SI88222BC-ISR datasheet, SI88222BC-ISR pinout, SI88222BC-ISR application, or SI88222BC-ISR equivalent, this page provides verified technical context, SOIC-16 wide-body package mapping, confirmed dual unidirectional channel configuration, AEC-Q100 qualification status, and real-world design meaning for UVLO, soft-start, shutdown, and feedback compensation functions.
Technical Context
The SI88222BC-ISR implements RF-based on/off keying modulation across a silicon dioxide capacitive barrier for each of its two unidirectional digital channels, enabling robust noise immunity and no-startup initialization. Its integrated flyback-derived DC-DC controller operates in peak current mode, senses output voltage on the secondary side via VSNS, and transmits error signals across the isolation barrier without optocouplers.
It features internal primary-side power switches (VSW), supports external FET drive via ESW/RSN for >5.5 V input configurations, and includes programmable shutdown (SH), soft-start (SS), and loop compensation (COMP) with fixed 49.9 kΩ RCOMP. Thermal shutdown and cycle-skipping at light loads are built-in.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 100 Mbps - enables high-speed serial interface isolation in servo drives and PLC backplanes. |
| Propagation Delay | ≤23 ns max - ensures tight timing alignment between isolated control and feedback signals in motor gate drivers. |
| Isolation Rating | 5000 VRMS for 1 minute - meets reinforced insulation requirements per UL 1577 and IEC 62368-1 for industrial safety. |
| DC-DC Output Power | Up to 5 W peak - powers secondary-side logic and small gate drivers without external isolated supply. |
| Operating Temp | –40 °C to +125 °C - supports under-hood automotive and industrial ambient conditions. |
| Transient Immunity | 100 kV/µs typical - maintains signal integrity during fast-switching IGBT/SiC inverter noise events. |
| AEC-Q100 Grade | Qualified - enables use in automotive subsystems requiring PPAP documentation and IMDS compliance. |
Pinout & Package
SI88222BC-ISR is housed in a RoHS-compliant SOIC-16 wide-body package (10.3 mm × 10.3 mm, 1.27 mm pitch) with creepage/clearance ≥8.3 mm, rated for 5000 VRMS isolation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6 | VDDP, VSW, GNDP, VDDA, GNDA, SH | Primary-side power stage and signal domain: VDDP/VSW/GNDP drive internal switch; VDDA/GNDA power primary isolator side; SH enables hardware shutdown. |
| 7, 8, 9, 10 | A1, A2, B1, B2 | Dual unidirectional data channels: A1/A2 transmit from primary to secondary; B1/B2 transmit from secondary to primary. |
| 11, 12, 13, 14, 15, 16 | GNDB, VDDB, VSNS, COMP, NC, DNC/VREGB | Secondary-side domain: GNDB/VDDB power secondary logic; VSNS feeds back regulated output voltage; COMP sets loop stability; DNC/VREGB is Zener-referenced for >5.5 V outputs only. |
Key Features
| Feature | Design Value |
|---|---|
| RF-modulated digital isolation | Eliminates startup initialization and provides superior magnetic field immunity vs. pulse-based isolators. |
| Secondary-side voltage sensing | Enables precise line/load regulation without optocouplers or bias circuitry, reducing BOM count and failure modes. |
| Integrated soft-start (SS) | Controls inrush current during power-up, preventing transformer saturation and system-level brownouts. |
| Hardware shutdown (SH) | Asserting SH high disables DC-DC operation instantly-critical for fault-safe shutdown in motor protection systems. |
| Thermal shutdown protection | Activates at junction temperature threshold to prevent permanent damage during overload or poor heatsinking. |
Applications
| Industrial Motor Control | EV Inverter Gate Drive |
|---|---|
Use Scenario: Isolating PWM signals and fault feedback between MCU and IGBT/SiC half-bridge drivers in variable-frequency drives. IC Role / Device Role / Timing Role: Dual-channel isolator providing independent forward (PWM) and reverse (DESAT/FLT) signal paths with matched propagation delay. Use Value: Enables compact, self-powered gate driver stage with 5 W isolated supply-reducing need for auxiliary isolated DC-DC modules. |
Use Scenario: Signal isolation in traction inverter control units where primary MCU operates at 3.3 V and secondary gate drivers require 5 V or 15 V bias. IC Role / Device Role / Timing Role: Provides reinforced insulation barrier and regulated 5 V secondary supply for isolated gate driver ICs (e.g., Si823x). Use Value: Meets AEC-Q100 and 5000 VRMS requirements while delivering precise timing (<23 ns delay) for synchronous switching. |
| Programmable Logic Controllers | Isolated Data Acquisition |
Use Scenario: Digital I/O isolation in distributed I/O modules interfacing with 24 V field sensors and actuators. IC Role / Device Role / Timing Role: Dual-channel isolator with integrated DC-DC powering isolated 24 V level-shifting circuitry and local microcontrollers. Use Value: Supports 24 V to 3.3/5 V conversion using external components-enabling direct field-side power derivation without separate isolated supplies. |
Use Scenario: Isolating analog-to-digital converter (ADC) serial interfaces (e.g., SPI) in high-voltage battery monitoring systems. IC Role / Device Role / Timing Role: Forward clock/data and reverse busy/ready signals across isolation barrier with sub-23 ns skew. Use Value: Maintains ADC sampling synchronization and prevents ground-loop noise coupling into precision measurement paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel isolated DC-DC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM6223ARWZ | 2-channel isolator + isolated 5 V supply; 2 W max output; uses iCoupler® transformer-based isolation; no programmable frequency or soft-start. | Limited to ≤2 W output; lacks SH/SS pins and external FET drive capability; lower transient immunity (70 kV/µs). | Choose ADUM6223ARWZ when board space is constrained and <2 W secondary power suffices; avoid for >24 V input or thermal-critical designs. |
| ISO7821FDWWR | 2-channel isolator only-no integrated DC-DC; requires external isolated supply; 100 Mbps, 11 ns delay; 8000 VRMS rating. | No on-chip power conversion; demands external isolated DC-DC (e.g., SN6501 + transformer); higher isolation but added complexity. | Choose ISO7821FDWWR when maximum isolation (8000 VRMS) or lowest propagation delay (11 ns) is prioritized over integration. |
Compared with SI88222BC-ISR, ADUM6223ARWZ offers smaller footprint but sacrifices output power headroom and programmability, while ISO7821FDWWR delivers superior isolation and speed at the cost of full system-level integration and bill-of-materials simplicity.
Availability
SI88222BC-ISR is available at Aetrix Electronics and suitable for industrial motor control, EV inverter gate drive, and isolated data acquisition requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle continuity.
Supply support for SI88222BC-ISR 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 U.S.-based semiconductor company specializing in analog and mixed-signal connectivity solutions, with leadership in RF, timing, and isolation technologies.
The Si88xx family was designed for high-reliability, self-powered signal isolation in harsh environments-targeting industrial automation, automotive electrification, and energy infrastructure applications demanding integrated power and robust EMC performance.
FAQ
What is the maximum isolated DC-DC output power of the SI88222BC-ISR?
The SI88222BC-ISR supports up to 5 W peak isolated output power when configured with appropriate external components-including a miniature transformer, Schottky rectifier, and output capacitor. Its average output power is rated at 2 W at 5.0 V, sufficient to power secondary-side logic, gate drivers, or small microcontrollers without an external isolated supply.
Does the SI88222BC-ISR require external components for DC-DC operation?
Yes, the SI88222BC-ISR requires external passive components to operate its integrated DC-DC converter: an input capacitor (C2), blocking capacitor (C1), miniature transformer (e.g., UMEC UTB02240s), rectifying Schottky diode (D1), output capacitor (C3), and resistor divider (R1/R2) for VSNS feedback. Loop compensation also requires RCOMP and CCOMP at the COMP pin.
How does the SI88222BC-ISR achieve 5000 VRMS isolation?
The SI88222BC-ISR achieves 5000 VRMS isolation through its proprietary silicon dioxide capacitive barrier, fabricated using Skyworks' high-voltage process. This barrier separates all primary-side (VDDP, VDDA, A1/A2) and secondary-side (VDDB, B1/B2, VSNS) pins, and is validated per UL 1577, CSA 62368-1, and VDE 62368-1 standards with minimum creepage/clearance of 8.3 mm in the SOIC-16 wide-body package.
Can the SI88222BC-ISR be used in automotive applications?
Yes, the SI88222BC-ISR is AEC-Q100 qualified and designated as an automotive-grade part. It supports AIAG-compliant PPAP documentation, IMDS/CAMDS listing, and operates across –40 °C to +125 °C. Its integrated DC-DC converter eliminates reliance on external isolated supplies-reducing failure points in EV inverter and battery management subsystems.
What is the function of the DNC/VREGB pin on the SI88222BC-ISR?
The DNC/VREGB pin on the SI88222BC-ISR is an internal Zener-referenced voltage output used only when the isolated DC-DC output exceeds 5.5 V. If the output voltage is ≤5.5 V, this pin must remain unconnected (DNC). When active, it provides a stable reference for external NPN transistor-based regulation circuits to generate higher secondary-side voltages such as 12 V or 24 V.
SI88222BC-ISR 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:
- No
- 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:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI88222BC-ISR FAQ
1.How can I place an order for SI88222BC-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI88222BC-ISR 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-ISR reliable?
The price and inventory of SI88222BC-ISR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI88222BC-ISR is usually 5 days.
3.What payment methods are accepted for SI88222BC-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI88222BC-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI88222BC-ISR?
SI88222BC-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI88222BC-ISR 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-ISR?
For technical support, including SI88222BC-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI88222BC-ISR requirements.
6.How does Aetrix verify that SI88222BC-ISR is sourced from the original manufacturer or authorized distributors?
All SI88222BC-ISR 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-ISR meets industry standards.
7.What is the process for return or replacement of SI88222BC-ISR?
All SI88222BC-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI88222BC-ISR, 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-ISR part is unused and in its original packaging.
Return procedure for SI88222BC-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI88222BC-ISR Tags
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ISO7741FDWR
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