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Skyworks Solutions Inc. SI88220BC-ASR
- Part No.:
- SI88220BC-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI88220BC-ASR.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:4,789
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Product details
Overview
SI88220BC-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 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 PLCs and EV motor control systems requiring reinforced insulation and compact isolated power.
For engineers reviewing the SI88220BC-ASR datasheet, SI88220BC-ASR pinout, SI88220BC-ASR application, or SI88220BC-ASR equivalent, key selection criteria include its SOIC-16 wide-body package, integrated flyback controller with soft-start and shutdown, 100 kV/µs transient immunity, and AEC-Q100 qualification for automotive-grade designs.
Technical Context
The SI88220BC-ASR implements RF-based on/off keying modulation across a silicon-dioxide capacitive isolation barrier, enabling robust noise immunity without startup initialization. Its digital channels operate as transparent CMOS buffers with independent UVLO monitoring on both sides.
The integrated DC-DC controller uses peak-current-mode closed-loop regulation with secondary-side voltage sensing via VSNS, eliminating optocouplers. It supports low-voltage input (3–5.5 V) to 3.3/5.0 V output configurations using internal power switches (VSW), with programmable soft-start (SS pin) and shutdown (SH pin).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000 VRMS for 1 minute (UL 1577, reinforced) |
| Data Rate | Up to 100 Mbps - enables high-speed serial interface isolation (e.g., SPI, RS-485) |
| Propagation Delay | 23 ns max - supports timing-critical real-time control loops |
| DC-DC Output Power | 2 W average at 5.0 V - sufficient to power secondary-side MCU, gate drivers, or sensors |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial environments |
| Transient Immunity | 100 kV/µs typical - ensures robust operation in noisy motor drive or inverter circuits |
| Regulatory Certifications | UL 1577, CSA 62368-1, VDE 62368-1, CQC GB4943.1 - meets global safety standards |
Pinout & Package
SI88220BC-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, rated for reinforced insulation per IEC 62368-1.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6 | VDDP, VSW, GNDP, VDDA, GNDA, SH | Primary-side DC-DC power stage and control: VDDP powers internal switch; VSW drives transformer primary; SH enables hardware shutdown |
| 7, 8, 9, 10 | A1, A2, B1, B2 | Digital isolation channels: A1/A2 are inputs on primary side; B1/B2 are outputs on isolated secondary side |
| 11, 12, 13, 14, 15, 16 | GNDB, VDDB, VSNS, COMP, NC, NC | Secondary-side signal and DC-DC feedback: GNDB/VDDB supply isolated logic; VSNS senses output voltage; COMP sets loop compensation |
Key Features
| Feature | Design Value |
|---|---|
| RF-based digital isolation | Eliminates magnetic field susceptibility and startup delays - no initialization required at power-on |
| Integrated DC-DC controller with secondary-side sensing | Enables precise line/load regulation without optocouplers or external bias circuitry |
| Programmable soft-start (SS pin) | Reduces inrush current during power-up - prevents transformer saturation and system brownouts |
| Hardware shutdown (SH pin) | Allows immediate disable of DC-DC output under fault conditions - critical for functional safety designs |
| AEC-Q100 Grade 1 qualification | Validated for automotive applications including motor control and battery management systems |
Applications
| Industrial PLC I/O Modules | EV Traction Inverter Gate Drive |
|---|---|
Use Scenario: Isolating digital control signals and powering isolated gate drivers in modular I/O cards. IC Role / Device Role / Timing Role: Dual-channel isolator provides bidirectional signal integrity while supplying 5 V/200 mA to downstream SiC MOSFET drivers. Use Value: Reduces BOM count by integrating isolated power and signal paths - eliminates need for separate DC-DC and optocoupler stages. |
Use Scenario: Providing isolated gate drive power and PWM signal transmission in high-power EV inverters. IC Role / Device Role / Timing Role: SI88220BC-ASR delivers synchronized, low-propagation-delay PWM signals (A1→B1, A2→B2) and powers isolated half-bridge drivers. Use Value: 23 ns max prop delay ensures tight timing alignment between phase legs - critical for minimizing shoot-through risk in SiC inverters. |
| Isolated Data Acquisition Systems | Renewable Energy Solar Inverters |
Use Scenario: Isolating ADC interface lines and powering isolated analog front-end circuitry in high-voltage grid monitoring units. IC Role / Device Role / Timing Role: SI88220BC-ASR isolates SPI clock/data lines while supplying clean 3.3 V to isolated ADC and reference buffers. Use Value: 100 kV/µs transient immunity prevents data corruption during lightning-induced surges on HV sensor inputs. |
Use Scenario: Isolating MPPT controller communication and powering auxiliary circuits in string-level solar inverters. IC Role / Device Role / Timing Role: SI88220BC-ASR transmits isolated status/control signals and powers isolated microcontroller peripherals in DC-link monitoring modules. Use Value: AEC-Q100 qualification and –40 °C to +125 °C operation ensure reliability in outdoor, thermally cycling rooftop installations. |
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 |
|---|---|---|---|
| ADUM6210ARWZ | 2-channel isolator + 500 mW isolated DC-DC; uses iCoupler® capacitive isolation; no programmable soft-start or shutdown pin | Limited to lower-power loads (≤500 mW); lacks hardware shutdown for safety-critical systems | Choose ADUM6210ARWZ when board space is constrained and <500 mW secondary power suffices |
| ISO7821FDWR | 2-channel isolator only - no integrated DC-DC; requires external isolated power supply; 100 Mbps, 11 ns prop delay | Requires discrete isolated DC-DC solution (e.g., transformer + controller), increasing design complexity and footprint | Choose ISO7821FDWR when higher speed (11 ns) is mandatory and external power architecture is already established |
Compared with ADUM6210ARWZ and ISO7821FDWR, SI88220BC-ASR uniquely combines 2 W isolated power, hardware shutdown, soft-start, and AEC-Q100 qualification in a single SOIC-16 package - making it optimal for automotive and industrial systems needing self-contained, safety-certified isolation.
Availability
SI88220BC-ASR is available at Aetrix Electronics and suitable for industrial automation systems, hybrid electric vehicle motor control, and isolated power supplies requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SI88220BC-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 with integrated, high-reliability digital isolation and isolated DC-DC conversion for demanding industrial and automotive applications.
FAQ
What is the maximum isolated DC-DC output power of the SI88220BC-ASR?
The SI88220BC-ASR delivers up to 2 W average output power at 5.0 V on the secondary side when configured in low-voltage input (3–5.5 V) to 3.3/5.0 V output mode. This is sufficient to power isolated microcontrollers, gate drivers, or sensor interfaces without external DC-DC stages. Peak power capability exceeds 5 W briefly, but thermal limits constrain sustained operation to 2 W under typical ambient conditions. The SI88220BC-ASR achieves this using internal power switches and secondary-side feedback via the VSNS pin.
Does the SI88220BC-ASR support programmable switching frequency?
No, the SI88220BC-ASR does not support programmable switching frequency. Its DC-DC controller operates at a fixed default frequency of 250 kHz, as specified for the Si882xx series. Programmable frequency (200–800 kHz) is available only on Si883xx and Si886xx variants via the SH_FC and SS pins. For SI88220BC-ASR, frequency adjustment is not supported - design must accommodate the fixed 250 kHz operation, including EMI filtering and transformer selection accordingly.
What is the function of the SH pin on the SI88220BC-ASR?
The SH (Shutdown) pin on the SI88220BC-ASR is a logic-input control that disables the integrated DC-DC converter when driven high. When SH is pulled to VDDP, the internal power switches halt switching, stopping isolated power generation while preserving digital isolation functionality. For normal operation, SH must be tied to GNDP. This feature enables fail-safe power removal in response to overtemperature, overcurrent, or system fault conditions - a key requirement in automotive and industrial safety architectures.
Can the SI88220BC-ASR be used in high-voltage input configurations (e.g., 24 V primary)?
No, the SI88220BC-ASR is not rated for 24 V primary-side input. It is designed exclusively for low-voltage input (3.0–5.5 V) to 3.3/5.0 V output configurations using internal power switches. For 24 V input applications, Skyworks specifies the Si884xx and Si886xx families, which use external FETs and sense resistors. Attempting 24 V on SI88220BC-ASR's VDDP will exceed absolute maximum ratings and cause permanent damage. Always verify input voltage range against the Si88220BC-ASR datasheet Section 2.3.10.
What isolation certifications apply to the SI88220BC-ASR?
The SI88220BC-ASR is certified to UL 1577 (5000 VRMS, 1 minute), CSA 62368-1 (reinforced insulation), VDE 62368-1 (conformity), and CQC GB4943.1. These approvals confirm compliance with global safety standards for reinforced insulation in industrial and automotive end equipment. Certification covers both the digital isolation barrier and the integrated DC-DC converter - no additional system-level certification burden is imposed on the user for basic isolation functions.
SI88220BC-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
SI88220BC-ASR FAQ
1.How can I place an order for SI88220BC-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI88220BC-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 SI88220BC-ASR reliable?
The price and inventory of SI88220BC-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI88220BC-ASR is usually 5 days.
3.What payment methods are accepted for SI88220BC-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI88220BC-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI88220BC-ASR?
SI88220BC-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI88220BC-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 SI88220BC-ASR?
For technical support, including SI88220BC-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI88220BC-ASR requirements.
6.How does Aetrix verify that SI88220BC-ASR is sourced from the original manufacturer or authorized distributors?
All SI88220BC-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 SI88220BC-ASR meets industry standards.
7.What is the process for return or replacement of SI88220BC-ASR?
All SI88220BC-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI88220BC-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 SI88220BC-ASR part is unused and in its original packaging.
Return procedure for SI88220BC-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI88220BC-ASR Tags
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