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Skyworks Solutions Inc. SI88222EC-ISR
- Part No.:
- SI88222EC-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI88222EC-ISR.pdf
- Description:
- DGTL ISO 5000VRMS 2CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,262
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Product details
Overview
SI88222EC-ISR 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 isolation. It features two unidirectional CMOS isolation channels (A1/A2 → B1/B2), 100 Mbps max data rate, 23 ns max propagation delay, and operates from –40 °C to +125 °C. It is used in industrial motor control systems requiring galvanic separation of gate drivers and feedback signals.
For engineers reviewing the SI88222EC-ISR datasheet, SI88222EC-ISR pinout, SI88222EC-ISR application, or SI88222EC-ISR equivalent, this page provides verified specifications, SOIC-16 wide-body package details, functional pin roles, automotive-grade AEC-Q100 qualification status, and validated alternative parts for isolated power + signal transfer designs.
Technical Context
The SI88222EC-ISR implements RF-based on/off keying modulation across a silicon dioxide capacitive barrier for noise-immune digital channel operation, with no startup initialization required. Its integrated flyback DC-DC controller senses output voltage on the secondary side via VSNS, enabling precise regulation without optocouplers or external bias circuitry.
This variant uses internal power switches (VSW) - not external FETs - and supports only low-voltage input configurations (3–5.5 V primary). It includes shutdown (SH pin), soft-start (SS pin), and fixed 250 kHz switching frequency; VREGB is DNC since output ≤5.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000 VRMS for 1 minute (UL 1577 certified) |
| Data Rate | Up to 100 Mbps - supports high-speed SPI, RS-485, and PWM signal isolation |
| Propagation Delay | 23 ns max - enables tight timing control in real-time motor control loops |
| DC-DC Output Power | 2 W average at 5.0 V - sufficient to power secondary-side MCU, gate driver, or ADC |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial environments |
| Transient Immunity | 100 kV/µs (typical) - robust against fast EFT and surge events in noisy factory settings |
| AEC-Q100 Grade | Qualified per Grade 1 - meets automotive reliability requirements without derating |
Pinout & Package
SI88222EC-ISR is housed in a RoHS-compliant SOIC-16 wide-body package (10.3 mm × 10.3 mm, 2.65 mm height) with creepage/clearance ≥8.3 mm, rated for reinforced insulation per IEC 62368-1.
| 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 switch output | Drives transformer primary directly; requires snubber for EMI suppression |
| 3 VDDP | Primary-side power supply | 3.0–5.5 V input for DC-DC controller and isolation transmitter |
| 4 VDDA | Primary-side signal supply | 3.0–5.5 V for A1/A2 input buffers and logic; shares UVLO with VDDP |
| 5 GNDA | Primary-side signal ground | Reference for A1/A2 inputs; tied to GNDP with minimal trace length |
| 6 SH | Shutdown control | Active-high disable of DC-DC converter; connect to GND for normal operation |
| 7 GNDB | Secondary-side signal ground | Reference for B1/B2 outputs; isolated from GNDA by 5 kVRMS barrier |
| 8 VDDB | Secondary-side signal supply | Powered by internal DC-DC; supplies B1/B2 output drivers and logic |
| 9 VSNS | Feedback sense input | Resistor-divider input monitoring VDDB; sets output voltage accuracy ±1.5% |
| 10 COMP | Compensation node | Connect RCOMP = 49.9 kΩ + CCOMP for stable peak-current-mode loop control |
| 11 NC | No-connect | Not bonded; leave floating or grounded per layout best practice |
| 12 A1 | Primary-side input channel 1 | Unidirectional CMOS input driving B1; compatible with 1.8–5.5 V logic |
| 13 A2 | Primary-side input channel 2 | Unidirectional CMOS input driving B2; independent timing and fail-safe behavior |
| 14 B1 | Secondary-side output channel 1 | CMOS output referenced to VDDB/GNDB; 100 Mbps capable, 23 ns delay |
| 15 B2 | Secondary-side output channel 2 | CMOS output referenced to VDDB/GNDB; supports fail-safe default-low mode |
| 16 DNC/VREGB | Do-not-connect / reference output | DNC for ≤5.5 V outputs; internal Zener unused in SI88222EC-ISR configuration |
Key Features
| Feature | Design Value |
|---|---|
| Integrated DC-DC with secondary-side sensing | Eliminates optocoupler biasing, improves load regulation to ±3% and line regulation to ±0.5% |
| RF-based isolation architecture | Provides 100 kV/µs common-mode transient immunity and immunity to magnetic fields >1 kA/µs |
| Fail-safe output mode | B1/B2 default to logic-low during VDDA/VDDP UVLO or isolation barrier fault - critical for IGBT gate safety |
| Automotive-grade qualification | AEC-Q100 Grade 1, PPAP-ready, IMDS/CAMDS compliant - suitable for ASIL-B system integration |
| Low EMI dithering control | Reduces peak radiated emissions by >10 dBμV/m at 150 MHz without external filtering |
Applications
| Industrial Motor Drives | EV Onboard Chargers |
|---|---|
Use Scenario: Isolating PWM gate signals and current-sense feedback between MCU and IGBT/SiC half-bridge in variable-frequency drives. IC Role / Device Role / Timing Role: Dual-channel isolator providing independent A1→B1 (PWM) and A2→B2 (fault flag) paths with <23 ns skew. Use Value: Enables 20 kHz switching with deterministic timing, eliminating ground-loop noise and enabling compact PCB layout. |
Use Scenario: Signal and power isolation in bidirectional AC/DC converters where primary-side controller communicates with secondary-side DSP over isolated UART/SPI. IC Role / Device Role / Timing Role: Provides isolated 5 V power (2 W) and two data channels for control loop synchronization and fault reporting. Use Value: Reduces bill-of-materials by replacing discrete isolators + isolated DC-DC module, saving >35% board area. |
| Programmable Logic Controllers | Renewable Energy Inverters |
Use Scenario: Digital I/O isolation in modular PLC backplanes handling 24 V DC field inputs and relay outputs. IC Role / Device Role / Timing Role: Isolates discrete input status (A1) and output enable commands (A2) across reinforced barrier to 24 V I/O modules. Use Value: Supports hot-swap capability and meets IEC 61000-4-5 Level 4 surge immunity (4 kV) without external TVS. |
Use Scenario: Isolating MPPT controller signals and DC-link voltage sensing in solar string inverters operating at 1000 V DC bus. IC Role / Device Role / Timing Role: Delivers isolated 5 V power to secondary-side ADC and isolates analog feedback (via sigma-delta modulator) and control signals. Use Value: Achieves <0.1% gain error over temperature due to secondary-side voltage sensing, improving MPPT efficiency by 0.4%. |
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 |
|---|---|---|---|
| ADUM6222ARWZ | 2-channel isolator + 500 mW isolated DC-DC; lower output power, no AEC-Q100 rating | Suitable for non-automotive industrial control; lacks 2 W capability for powering gate drivers | Select when board space is constrained and secondary-side load <300 mA |
| ISO7821FDWR | 2-channel isolator only - no integrated DC-DC; requires external isolated power supply | Used where system already has isolated 5 V rail; adds design complexity and component count | Select when existing architecture mandates separate power and signal isolation domains |
Compared with ADUM6222ARWZ and ISO7821FDWR, SI88222EC-ISR uniquely combines 2 W isolated power, AEC-Q100 qualification, and 100 Mbps timing performance in a single SOIC-16 package - enabling simplified, automotive-grade inverter and motor drive designs without external DC-DC stages.
Availability
SI88222EC-ISR is available at Aetrix Electronics and suitable for industrial motor drives, EV onboard chargers, programmable logic controllers, and renewable energy inverters requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.
Supply support for SI88222EC-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 global semiconductor company specializing in analog and mixed-signal connectivity solutions, with leadership in RF, timing, and isolation technologies for high-reliability applications.
The Si88x2x family was designed to replace optocoupler-based isolation + discrete DC-DC in industrial and automotive power systems, delivering higher speed, longer lifetime, and tighter regulation in a single IC.
FAQ
What is the maximum output power delivered by the integrated DC-DC converter in SI88222EC-ISR?
The SI88222EC-ISR delivers up to 2 W average output power at 5.0 V on the secondary side. This is sufficient to power typical isolated gate drivers (e.g., Si823x), microcontrollers, and ADCs without external regulators. Peak power capability exceeds 5 W briefly, but thermal limits constrain sustained delivery to 2 W in SOIC-16 packaging.
Does SI88222EC-ISR support fail-safe output behavior during power loss?
Yes, SI88222EC-ISR supports configurable fail-safe mode where B1 and B2 default to logic-low when VDDA or VDDP falls below UVLO thresholds. This behavior is hardware-defined and requires no external components - critical for preventing unintended IGBT turn-on during brownout conditions.
Can SI88222EC-ISR operate with a 24 V primary-side input?
No. SI88222EC-ISR is part of the Si8822x series, which supports only low-voltage primary inputs (3.0–5.5 V). For 24 V input applications, Skyworks specifies Si8842x or Si8862x variants with external FET drivers (ESW/RSN pins) and high-voltage configuration support.
What is the purpose of the DNC/VREGB pin on SI88222EC-ISR?
On SI88222EC-ISR, the Pin 16 DNC/VREGB is designated Do-Not-Connect because the device's isolated output voltage is ≤5.5 V. The internal Zener reference is inactive in this configuration. Connecting this pin may disrupt regulation or cause latch-up; it must remain unconnected per Skyworks' design guidelines.
Is SI88222EC-ISR qualified for automotive applications?
Yes, SI88222EC-ISR is AEC-Q100 Grade 1 qualified (–40 °C to +125 °C), with full PPAP documentation support, IMDS/CAMDS compliance, and manufacturing flow controls specific to automotive requirements. It is approved for use in ASIL-B systems including EV traction inverters and battery management interfaces.
SI88222EC-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
SI88222EC-ISR FAQ
1.How can I place an order for SI88222EC-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI88222EC-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 SI88222EC-ISR reliable?
The price and inventory of SI88222EC-ISR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI88222EC-ISR is usually 5 days.
3.What payment methods are accepted for SI88222EC-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI88222EC-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI88222EC-ISR?
SI88222EC-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI88222EC-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 SI88222EC-ISR?
For technical support, including SI88222EC-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI88222EC-ISR requirements.
6.How does Aetrix verify that SI88222EC-ISR is sourced from the original manufacturer or authorized distributors?
All SI88222EC-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 SI88222EC-ISR meets industry standards.
7.What is the process for return or replacement of SI88222EC-ISR?
All SI88222EC-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI88222EC-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 SI88222EC-ISR part is unused and in its original packaging.
Return procedure for SI88222EC-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI88222EC-ISR Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
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ISO7720FDR
Texas Instruments
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ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
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SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
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ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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