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Skyworks Solutions Inc. SI88220EC-ASR
- Part No.:
- SI88220EC-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI88220EC-ASR.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:4,792
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Product details
Overview
SI88220EC-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 a 5 kVRMS capacitive isolation barrier. It supports data rates up to 100 Mbps, achieves 23 ns max propagation delay, and operates over –40 °C to +125 °C for industrial and automotive power conversion and signal isolation in motor drives and PLCs.
For engineers reviewing the SI88220EC-ASR datasheet, SI88220EC-ASR pinout, SI88220EC-ASR application, or SI88220EC-ASR equivalent, this device enables compact, high-reliability isolated power + signal transfer without optocouplers or external feedback components - critical for space-constrained inverters, EV battery management interfaces, and isolated ADC front-ends.
Technical Context
The SI88220EC-ASR implements two unidirectional RF-modulated CMOS isolation channels using on/off keying across a silicon dioxide barrier, providing inherent noise immunity and eliminating startup initialization. Its integrated flyback DC-DC controller senses output voltage directly on the secondary side via VSNS, closing the regulation loop across isolation without optocouplers.
This variant uses internal power switches (VSW), supports 3–5.5 V primary input, delivers 3.3/5.0 V secondary output, and includes shutdown (SH pin), soft-start (SS pin), and fixed 250 kHz switching frequency - distinguishing it from Si883xx (programmable frequency) and Si884xx/Si886xx (external switch topologies).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000 VRMS for 1 minute - meets reinforced insulation requirements per UL 1577, CSA 62368-1, and VDE 62368-1. |
| Data Rate | Up to 100 Mbps - supports high-speed serial interfaces like SPI, RS-485 transceiver control, and fast digital I/O in real-time systems. |
| Propagation Delay | 23 ns max - ensures tight timing alignment between isolated control signals in gate driver circuits and feedback loops. |
| DC-DC Output Power | 2 W average at 5.0 V - sufficient to power secondary-side microcontrollers, sensors, or isolated transceivers without auxiliary supplies. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial environments with no derating. |
| Transient Immunity | 100 kV/µs typical - withstands high dv/dt noise in motor drive and inverter applications without data corruption. |
| AEC-Q100 Grade | Qualified - supports automotive-grade reliability with PPAP documentation and IMDS/CAMDS compliance. |
Pinout & Package
SI88220EC-ASR 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, certified for reinforced insulation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 11, 12, 13, 14, 15, 16 | Signal & power terminals (A1/A2/B1/B2/VDDP/GNDP/VDDA/GNDA/VDDB/GNDB/SH/VSNS) | Support dual unidirectional data paths (A→B), isolated DC-DC control (SH shutdown, VSNS feedback), and independent primary/secondary power domains. |
| 7, 8, 9, 10 | No-connect (NC) | Internally unconnected - must be left floating or grounded per layout guidelines; no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive RF isolation barrier | Eliminates LED aging and CMTI limitations of optocouplers; enables 100 Mbps operation with 18 ns typical prop delay. |
| Secondary-side voltage sensing (VSNS) | Enables precise line/load regulation without optocoupler bias circuitry - reduces BOM count and improves long-term stability. |
| Integrated VSW power switch | Supports direct transformer drive from 3–5.5 V input - eliminates need for external MOSFET and gate driver in low-voltage configurations. |
| Shutdown control (SH pin) | Allows system-level power sequencing: asserting SH high disables DC-DC output while preserving isolation channel functionality. |
| Automotive qualification (AEC-Q100) | Validated for automotive use with full PPAP support, IMDS listing, and zero-defect manufacturing flow - suitable for ADAS and battery monitoring. |
Applications
| Industrial Motor Control | EV Battery Management Systems |
|---|---|
|
Use Scenario: Isolating gate driver signals and current-sense ADC outputs in 3-phase inverter stacks. IC Role / Device Role / Timing Role: Dual-channel isolator provides timing-aligned PWM control (A1/A2) and isolated analog feedback (B1/B2), while powering secondary-side comparators via integrated 5 V DC-DC. Use Value: Eliminates separate isolated DC-DC module, reducing PCB area by >40% and improving thermal coupling between control and power stages. |
Use Scenario: Communicating cell voltage and temperature data from high-voltage battery packs to central controllers. IC Role / Device Role / Timing Role: SI88220EC-ASR isolates I²C or SPI bus lines and powers isolated ADCs/supervisors on the pack side using its 3.3 V output. Use Value: Meets reinforced insulation requirements (5 kVRMS) and AEC-Q100 for functional safety (ASIL-C capable), with <23 ns delay enabling real-time fault response. |
| Programmable Logic Controllers | Isolated Industrial Sensors |
|
Use Scenario: Digitally isolating field I/O modules (digital inputs/outputs) while supplying isolated 5 V to sensor excitation circuits. IC Role / Device Role / Timing Role: Provides two independent isolation channels for input status and output command signals, with integrated DC-DC powering downstream level shifters and interface ICs. Use Value: Reduces component count vs. discrete isolator + regulator solutions, and maintains ±0.5% output regulation across load steps (10–100%). |
Use Scenario: Isolating analog sensor outputs (e.g., pressure, current) in hazardous-area instrumentation with intrinsic safety barriers. IC Role / Device Role / Timing Role: SI88220EC-ASR isolates digital control lines to isolated sigma-delta modulators and powers their reference circuitry via VDDB. Use Value: Achieves 100 kV/µs CMTI and 5 kVRMS isolation - exceeds IEC 61000-4-5 surge immunity requirements for Zone 0/1 installations. |
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; uses magnetic coupling; 50 Mbps max data rate; no programmable shutdown. | Limited to lower-power secondary loads; lacks AEC-Q100 qualification and 100 Mbps capability. | Choose when board space is constrained but power demand ≤500 mW and automotive qualification is not required. |
| ISO7821FDWR | 2-channel isolator only - no integrated DC-DC; requires external isolated supply; 100 Mbps; 16-pin SOIC. | Increases BOM and layout complexity; needs separate isolated DC-DC (e.g., SN6501 + transformer). | Prefer when system already includes an isolated power rail or when higher reliability via separation of power/signal functions is mandated. |
Compared with ADUM6210ARWZ and ISO7821FDWR, SI88220EC-ASR uniquely combines 2 W isolated power, 100 Mbps speed, AEC-Q100 qualification, and secondary-side sensing in one SOIC-16 package - enabling single-chip isolated subsystems in EV traction inverters and industrial servo drives.
Availability
SI88220EC-ASR is available at Aetrix Electronics and suitable for industrial motor control, EV battery management systems, and programmable logic controllers requiring stable component supply, automotive-grade reliability, and integrated isolated power delivery.
Supply support for SI88220EC-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 was designed to replace optocoupler-based isolation + discrete DC-DC architectures in high-reliability industrial and automotive systems - emphasizing integration, safety certification, and EMI robustness.
FAQ
What is the maximum isolated output power of the SI88220EC-ASR?
The SI88220EC-ASR delivers up to 2 W average isolated output power at 5.0 V, supporting secondary-side microcontrollers, isolated transceivers, and analog front-ends without external regulators. Peak power capability is higher but limited by thermal design and transformer selection - refer to AN892 for validated transformer part numbers and layout rules.
Does the SI88220EC-ASR require external components for DC-DC operation?
Yes - the SI88220EC-ASR requires an external miniature transformer, input/output capacitors (C2, C3), blocking capacitor (C1), rectifying Schottky diode (D1), and resistor divider (R1/R2) for VSNS feedback. No optocoupler or secondary-side error amplifier is needed due to integrated feedback encoding across the isolation barrier.
How does the SI88220EC-ASR achieve 5000 VRMS isolation rating?
The SI88220EC-ASR achieves 5000 VRMS isolation through its proprietary silicon dioxide capacitive barrier fabricated on a SOIC-16 wide-body package with ≥8.3 mm creepage and clearance. This structure is certified to UL 1577, CSA 62368-1, and VDE 62368-1 for reinforced insulation - verified via 1-minute AC hi-pot testing per standard protocols.
Can the SI88220EC-ASR operate with 24 V input?
No - the SI88220EC-ASR is designed for 3–5.5 V primary-side input only. For 24 V input applications, Skyworks specifies Si8842x or Si8862x variants, which use external power switches (ESW/RSN pins) and support high-voltage flyback topologies. Using 24 V on SI88220EC-ASR will exceed absolute maximum ratings and cause permanent damage.
What is the function of the SH pin on the SI88220EC-ASR?
The SH (Shutdown) pin on the SI88220EC-ASR disables the integrated DC-DC converter when driven high, reducing quiescent current to <10 µA while maintaining digital isolation channel functionality. For normal operation, SH must be tied to GNDA. This feature enables safe power sequencing in systems where isolated power must be gated independently of signal isolation.
SI88220EC-ASR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si88x2x
- 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:
- 2/0
- 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
SI88220EC-ASR FAQ
1.How can I place an order for SI88220EC-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI88220EC-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 SI88220EC-ASR reliable?
The price and inventory of SI88220EC-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI88220EC-ASR is usually 5 days.
3.What payment methods are accepted for SI88220EC-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI88220EC-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI88220EC-ASR?
SI88220EC-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI88220EC-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 SI88220EC-ASR?
For technical support, including SI88220EC-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI88220EC-ASR requirements.
6.How does Aetrix verify that SI88220EC-ASR is sourced from the original manufacturer or authorized distributors?
All SI88220EC-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 SI88220EC-ASR meets industry standards.
7.What is the process for return or replacement of SI88220EC-ASR?
All SI88220EC-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI88220EC-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 SI88220EC-ASR part is unused and in its original packaging.
Return procedure for SI88220EC-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI88220EC-ASR Tags
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