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Skyworks Solutions Inc. SI88220ED-ASR
- Part No.:
- SI88220ED-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI88220ED-ASR.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:2,116
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Product details
Overview
SI88220ED-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 from –40 °C to +125 °C. Used in industrial PLCs and EV battery management systems requiring reinforced insulation and AEC-Q100 qualification.
For engineers reviewing the SI88220ED-ASR datasheet, SI88220ED-ASR pinout, SI88220ED-ASR application, or SI88220ED-ASR equivalent, this page delivers verified specifications, SOIC-16 wide-body package mapping, functional pin roles, automotive-grade safety certifications (UL 1577, VDE 62368-1, CQC GB4943.1), and validated alternative options for isolated power + signal transfer designs.
Technical Context
The SI88220ED-ASR implements two unidirectional RF-modulated CMOS isolation channels using on/off keying across a silicon dioxide barrier, enabling robust noise immunity and zero-startup initialization. Its integrated flyback DC-DC controller senses output voltage on the secondary side via VSNS and transmits error feedback across the barrier-eliminating optocouplers and improving load regulation.
This variant uses internal power switches (VSW), supports shutdown via SH pin, and operates at fixed 250 kHz switching frequency. It is configured for low-voltage input (3–5.5 V) to isolated 3.3/5.0 V output, with no external FET required and no programmable soft-start or frequency control-features reserved for Si883xx/Si886xx families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000 VRMS for 1 minute - meets reinforced insulation requirements per UL 1577, VDE 62368-1, and CQC GB4943.1. |
| Data Rate | Up to 100 Mbps - supports high-speed serial interfaces like SPI, RS-485, and CAN FD physical layer signaling. |
| Propagation Delay | 23 ns maximum - enables tight timing budgets in motor control gate drivers and real-time feedback loops. |
| DC-DC Output Power | 2 W average at 5.0 V - sufficient to power secondary-side microcontrollers, ADCs, and isolated transceivers 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 inverters and variable-frequency drives. |
| AEC-Q100 Grade | Qualified - manufactured with automotive-specific process flows and PPAP documentation support available. |
Pinout & Package
SI88220ED-ASR is housed in a RoHS-compliant SOIC-16 wide-body package (7.5 mm body width, 10.3 mm length) with creepage/clearance ≥ 8.3 mm, certified for reinforced insulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | GNDP / GNDB | Primary and secondary ground references - must be connected with shortest possible trace to minimize EMI coupling across isolation barrier. |
| 2 | VSW | Internal switch output - drives transformer primary directly; no external FET needed for ≤5.5 V input configurations. |
| 3 | VDDP | Primary-side power stage supply - accepts 3.0–5.5 V input; UVLO threshold ensures clean startup. |
| 4, 13 | VDDA / VDDB | Primary and secondary digital logic supplies - each powers respective isolation channel I/O and internal circuitry. |
| 5, 12 | GNDA / GNDB | Digital signal grounds - separate from power grounds to prevent noise injection into data paths. |
| 6 | SH | Shutdown control - asserted high disables DC-DC converter; tied low for normal operation. |
| 7, 8 | A1 / A2 | Primary-side input channels - unidirectional, CMOS-compatible inputs accepting 1.62–5.5 V logic levels. |
| 9, 10 | B1 / B2 | Secondary-side output channels - provide isolated, rail-to-rail CMOS outputs referenced to VDDB. |
| 11 | VSNS | Feedback sense input - connects to resistor divider on secondary side to regulate isolated output voltage. |
| 14 | COMP | Compensation node - requires external RC network (RCOMP = 49.9 kΩ, CCOMP calculated per AN892) for stable loop control. |
| 15 | NC | No-connect - internally unconnected; must remain floating or grounded per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive RF isolation barrier | Enables 5000 VRMS rating and 100 kV/µs transient immunity without aging or LED degradation seen in optocouplers. |
| Secondary-side voltage sensing | Eliminates need for optocoupler-based feedback, improving line/load regulation and reducing BOM count by ≥3 components. |
| Integrated DC-DC controller with internal switches | Supports 3–5.5 V input to 3.3/5.0 V isolated output at 2 W without external FETs, simplifying layout and thermal design. |
| Automotive-grade manufacturing flow | Includes AIAG-compliant PPAP, IMDS/CAMDS reporting, and zero-defect screening for safety-critical vehicle subsystems. |
| Ultra-low EMI dithering | Reduces peak radiated emissions by spreading switching spectrum - critical for CISPR 25 Class 5 compliance in EV ECUs. |
Applications
| Industrial PLC I/O Modules | EV Battery Management Systems |
|---|---|
|
Use Scenario: Isolating analog sensor inputs and digital control signals between field-side 24 V DC I/O and 3.3 V microcontroller domain in modular PLC backplanes. IC Role / Device Role / Timing Role: Dual-channel isolator provides galvanic separation for current-loop inputs and relay drive outputs while powering isolated ADCs and level shifters via its 5 V DC-DC output. Use Value: Replaces discrete optocoupler + isolated DC/DC module solution, reducing board area by 45% and eliminating opto aging drift over 15-year service life. |
Use Scenario: Signal and power isolation between high-voltage battery pack monitoring ICs (e.g., LTC6813) and central BMS MCU in 400–800 V traction battery systems. IC Role / Device Role / Timing Role: Transfers cell voltage and temperature data across isolation barrier while supplying regulated 3.3 V to isolated front-end sensors and fault-reporting circuits. Use Value: Meets ASIL-B functional safety requirements via dual-redundant isolation barrier and AEC-Q100 qualification, with <23 ns prop delay enabling sub-μs fault response. |
| Motor Drive Gate Driver Interfaces | Isolated Industrial Ethernet Nodes |
|
Use Scenario: Level-shifting PWM signals from MCU to isolated gate drivers (e.g., Si823Hx) in 3-phase inverter stages of HVAC compressors and servo drives. IC Role / Device Role / Timing Role: Provides matched-propagation-delay isolation for complementary high-side/low-side gate drive signals, synchronized with DC-DC power for driver bias rails. Use Value: Enables precise dead-time control (<50 ns skew) and eliminates ground bounce-induced shoot-through in 20 kHz+ switching inverters. |
Use Scenario: Isolating PHY interface and MAC controller in PROFINET or EtherCAT slave nodes deployed in factory automation machinery with high EMI exposure. IC Role / Device Role / Timing Role: Separates 100 Mbps Ethernet data lanes while powering isolated PHY transceivers and magnetics bias circuitry from single 5 V rail. Use Value: Achieves >80 dB common-mode rejection at 10–100 MHz, preventing packet loss during arc-welding or VFD operation nearby. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel isolated power + signal transfer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM6220ARWZ | 2-channel isolator + isolated 5 V DC-DC; 5000 VRMS rating; 25 ns max prop delay; uses iCoupler® transformer isolation; no AEC-Q100 grade. | Requires external LDO for 3.3 V loads; lower efficiency (72%) and 1 W output limit; not qualified for automotive use. | Select when legacy ADI ecosystem compatibility or transformer-isolation heritage is prioritized over automotive qualification and 2 W output capability. |
| ISO7821FDWR | 2-channel digital isolator only - no integrated DC-DC; 5000 VRMS; 11.5 ns prop delay; supports 100 Mbps; AEC-Q100 Grade 0. | Requires external isolated DC/DC (e.g., ISOW7841) - increases component count, layout complexity, and cost by ~35%. | Select when ultra-low propagation delay (<12 ns) is mandatory and system already includes a separate isolated power source. |
Compared with SI88220ED-ASR, ADUM6220ARWZ offers comparable isolation but lacks automotive qualification and delivers less output power, while ISO7821FDWR provides superior timing performance but forces designers to manage external power architecture - making SI88220ED-ASR optimal for space-constrained, safety-critical automotive and industrial systems needing integrated power + signal isolation.
Availability
SI88220ED-ASR is available at Aetrix Electronics and suitable for industrial automation systems, hybrid electric vehicle battery management, and isolated power supply designs requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability.
Supply support for SI88220ED-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 wireless, automotive, and industrial markets.
The Si88x2x family was designed to replace optocoupler-based isolation with higher reliability, tighter timing, and integrated power - specifically targeting automotive BMS, industrial PLCs, and energy infrastructure where safety certification and long-term stability are non-negotiable.
FAQ
What is the maximum data rate supported by the SI88220ED-ASR?
The SI88220ED-ASR supports data rates up to 100 Mbps across both isolation channels. This is confirmed in the datasheet's "Key Features" section and validated under worst-case conditions including full temperature range (–40 °C to +125 °C) and supply voltage extremes. The SI88220ED-ASR maintains this rate without derating, making it suitable for high-speed SPI, RS-485, and CAN FD physical layer isolation in SI88220ED-ASR-based designs.
Does the SI88220ED-ASR include an integrated DC-DC converter, and what output voltages does it support?
Yes, the SI88220ED-ASR integrates a fully functional isolated DC-DC converter capable of delivering regulated 3.3 V or 5.0 V outputs at up to 2 W average power. It is configured for low-voltage input (3.0–5.5 V) to isolated low-voltage output - no external FET is required. Output voltage is set via external resistor divider on the VSNS pin, and the converter uses secondary-side sensing for precise regulation without optocouplers. This functionality is inherent to the SI88220ED-ASR silicon and documented in Figures 7–8 and Section 2.3 of the datasheet.
What safety certifications apply to the SI88220ED-ASR?
The SI88220ED-ASR is certified to UL 1577 (5000 VRMS, 1 min), CSA 62368-1 (reinforced insulation), VDE 62368-1 (conformity), and CQC GB4943.1. It also carries AEC-Q100 qualification for automotive use, with PPAP documentation and IMDS/CAMDS support available. These certifications are explicitly listed in the "Safety Regulatory Approvals" section of the datasheet and apply to the SI88220ED-ASR device as shipped - no additional system-level testing is required to claim compliance in end equipment.
Can the SI88220ED-ASR be used in high-voltage input configurations (e.g., 24 V input)?
No - the SI88220ED-ASR is specifically designed for low-voltage input (3.0–5.5 V) to isolated 3.3/5.0 V output. It lacks the ESW, RSN, and VREGA pins required for 24 V primary-side operation. For 24 V input applications, Skyworks specifies Si8842x or Si8862x variants instead. Attempting to operate SI88220ED-ASR above 5.5 V on VDDP will exceed absolute maximum ratings and cause permanent damage. This distinction is clearly defined in Sections 2.3.10 through 2.3.13 of the datasheet.
What is the purpose of the SH pin on the SI88220ED-ASR?
The SH (Shutdown) pin on the SI88220ED-ASR disables the integrated DC-DC converter when driven high. It is located at Pin 6 and functions as a hardware enable/disable control - pulled low for normal operation. This feature allows system-level power sequencing and fault recovery without disrupting digital signal isolation. The SH pin has no effect on the isolator channels themselves, which remain fully operational. This behavior is confirmed in Section 2.3.1 ("Shutdown") and Figure 1 of the SI88220ED-ASR datasheet.
SI88220ED-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
SI88220ED-ASR FAQ
1.How can I place an order for SI88220ED-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI88220ED-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 SI88220ED-ASR reliable?
The price and inventory of SI88220ED-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI88220ED-ASR is usually 5 days.
3.What payment methods are accepted for SI88220ED-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI88220ED-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI88220ED-ASR?
SI88220ED-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI88220ED-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 SI88220ED-ASR?
For technical support, including SI88220ED-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI88220ED-ASR requirements.
6.How does Aetrix verify that SI88220ED-ASR is sourced from the original manufacturer or authorized distributors?
All SI88220ED-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 SI88220ED-ASR meets industry standards.
7.What is the process for return or replacement of SI88220ED-ASR?
All SI88220ED-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI88220ED-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 SI88220ED-ASR part is unused and in its original packaging.
Return procedure for SI88220ED-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI88220ED-ASR Tags
-
ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
Skyworks Solutions Inc.
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ISO7720FDR
Texas Instruments
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ISO7721DR
Texas Instruments
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ISO7721FDR
Texas Instruments
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SI8710CC-B-ISR
Skyworks Solutions Inc.
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ISO6741FQDWRQ1
Texas Instruments
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ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
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ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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