My Inquiry
My Account
Skyworks Solutions Inc. SI88220BD-ASR
- Part No.:
- SI88220BD-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI88220BD-ASR.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:2,494
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI88220BD-ASR 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 on the secondary side. It provides 2 unidirectional isolation channels with ≤23 ns max propagation delay and supports data rates up to 100 Mbps. Certified to UL 1577 (5000 VRMS), VDE 62368-1, and AEC-Q100, it is used in industrial motor control and EV inverter gate drive power supplies.
For engineers reviewing the SI88220BD-ASR datasheet, SI88220BD-ASR pinout, SI88220BD-ASR application, or SI88220BD-ASR equivalent, this page delivers verified specifications, SOIC-16 wide-body package details, functional pin mapping, automotive-grade thermal and EMI performance metrics, and validated alternative options for isolated power + signal transfer designs.
Technical Context
The SI88220BD-ASR implements capacitive RF-based digital isolation using on/off keying across a silicon dioxide barrier, enabling robust noise immunity and zero initialization requirement. Its integrated flyback DC-DC controller operates in peak current mode with closed-loop feedback via VSNS and COMP pins, supporting both internal switch (VSW) and external FET (ESW/RSN) configurations.
This variant uses internal primary-side power switches (VSW), fixed 250 kHz switching frequency, shutdown control via SH pin, and soft-start via SS pin. It is configured for low-voltage input (3–5.5 V) to isolated 3.3/5.0 V output, with VREGA available for >5.5 V auxiliary regulation and DNC/VREGB unused per datasheet Table 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000 VRMS for 1 minute (UL 1577 certified) |
| Data Rate | Up to 100 Mbps - enables high-speed SPI, RS-485, and PWM signal isolation |
| Propagation Delay | ≤23 ns max - supports tight-timing applications like gate driver feedback loops |
| DC-DC Output Power | Up to 5 W peak - powers isolated MCU peripherals and gate drivers without external regulators |
| Operating Temp | –40 °C to +125 °C - qualified for under-hood automotive and industrial environments |
| Transient Immunity | 100 kV/µs typical - withstands fast-rising noise in motor drives and inverters |
| EMI Performance | Dithering-enabled low emissions - reduces filtering requirements in EMC-sensitive systems |
Pinout & Package
SI88220BD-ASR is housed in a RoHS-compliant SOIC-16 wide-body package (10.3 mm × 10.3 mm, 2.3 mm height) with creepage/clearance ≥8.3 mm, rated for reinforced insulation per IEC 62368-1.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GNDP | Primary-side power ground - connects directly to VDDP return path for stable DC-DC operation |
| 2 | VSW | Internal switch output - drives transformer primary with integrated NMOS; no external FET needed |
| 3 | VDDP | Primary-side DC-DC input supply - accepts 3.0–5.5 V; requires local 10 µF bypass capacitor |
| 4 | VDDA | Primary-side isolator logic supply - powers A1/A2 transmitters; shares GNDP reference |
| 5 | GNDA | Primary-side signal ground - separate from GNDP but must be short-traced to minimize noise coupling |
| 6 | SH | Shutdown control - active-high disables DC-DC; tied low for normal operation |
| 7 | A1 | Channel 1 transmitter input - unidirectional CMOS input driving HF XMTR circuit |
| 8 | A2 | Channel 2 transmitter input - independent of A1; supports dual isolated control signals |
| 9 | B1 | Channel 1 receiver output - isolated CMOS output referenced to VDDB/GNDB |
| 10 | B2 | Channel 2 receiver output - complements B1; enables bidirectional signal flow via two channels |
| 11 | GNDB | Secondary-side signal ground - isolated reference for B1/B2 outputs and VDDB |
| 12 | VDDB | Secondary-side isolator logic supply - powered by internal DC-DC; regulates at 3.3/5.0 V |
| 13 | VSNS | Feedback sense input - monitors isolated output voltage via resistor divider; enables precise regulation |
| 14 | COMP | Compensation node - connects RCOMP (49.9 kΩ) and CCOMP for loop stability |
| 15 | NC | No-connect - not bonded; must remain floating per datasheet Figure 1 |
| 16 | DNC/VREGB | Do-not-connect - Zener-referenced only for >5.5 V outputs; unused in SI88220BD-ASR configuration |
Key Features
| Feature | Design Value |
|---|---|
| Integrated DC-DC with internal switch | Eliminates need for external MOSFET and gate driver in 3–5.5 V input systems |
| Capacitive RF isolation architecture | Provides 100 kV/µs CMTI and immunity to magnetic fields without optocoupler aging |
| Programmable soft-start (SS pin) | Reduces inrush current during power-up; prevents bus droop in multi-rail systems |
| Reinforced insulation certification | Meets UL 1577, VDE 62368-1, and CQC GB4943.1 - suitable for safety-critical industrial and automotive use |
| Automotive-grade qualification | AEC-Q100 Grade 1 compliance with PPAP support - validated for EV traction inverter subsystems |
Applications
| Industrial Motor Control | EV Inverter Gate Drive |
|---|---|
Use Scenario: Isolating PWM signals and fault feedback between MCU and IGBT/SiC gate drivers in variable-frequency drives. IC Role / Device Role / Timing Role: Dual-channel isolator providing timing-aligned signal transfer and isolated 5 V power for gate driver bias. Use Value: Enables <23 ns propagation delay synchronization and eliminates external isolated DC-DC converters, reducing BOM count by 3+ components. |
Use Scenario: Providing isolated control and sensing in battery management and inverter control units of hybrid/electric vehicles. IC Role / Device Role / Timing Role: Safety-certified isolator powering isolated MCU peripherals while transferring phase current and temperature telemetry. Use Value: Meets AEC-Q100 and 5000 VRMS isolation requirements without derating, supporting ASIL-B system-level compliance. |
| PLC Digital I/O Modules | Isolated Data Acquisition |
Use Scenario: Signal isolation and local power delivery for 24 V digital input/output cards in distributed control systems. IC Role / Device Role / Timing Role: Dual-channel isolator with integrated 5 V DC-DC powering downstream logic and level-shifting circuits. Use Value: Replaces discrete isolators + isolated buck converter, cutting PCB area by ~35% and improving thermal margin. |
Use Scenario: Isolating analog front-end ADC interfaces and microcontroller communication in high-noise factory-floor sensors. IC Role / Device Role / Timing Role: High-EMI-immunity isolator transferring SPI clock/data while supplying clean 3.3 V to isolated ADC domain. Use Value: Achieves 100 kV/µs common-mode transient immunity, preventing data corruption during arc-flash events. |
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 DC-DC; 2.5 kVRMS rating; no AEC-Q100 qualification | Limited to industrial temp range (–40 °C to +105 °C); lower isolation voltage restricts use in EV traction systems | Select when cost sensitivity outweighs automotive qualification and 5000 VRMS requirement |
| ISO7821FDWWR | 2-channel isolator only - no integrated DC-DC; requires external isolated power supply | Increases BOM and layout complexity; suitable where existing isolated bias rails are available | Choose if system already includes isolated 5 V supply and only signal isolation is needed |
Compared with ADUM6223ARWZ and ISO7821FDWWR, SI88220BD-ASR uniquely combines AEC-Q100 qualification, 5000 VRMS reinforced insulation, and integrated 5 W DC-DC in a single SOIC-16 package - eliminating external power conversion and enabling direct replacement in safety-critical automotive and industrial designs.
Availability
SI88220BD-ASR is available at Aetrix Electronics and suitable for industrial motor control, EV inverter gate drive, and PLC digital I/O modules requiring stable component supply across extended temperature and safety certification lifecycles.
Supply support for SI88220BD-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 specifically for high-reliability isolated power + signal transfer in automotive and industrial systems, integrating robust capacitive isolation with flexible DC-DC conversion in compact packages.
FAQ
What is the maximum data rate supported by the SI88220BD-ASR?
The SI88220BD-ASR supports a maximum data rate of 100 Mbps across both isolation channels. This is confirmed in the datasheet's "Key Features" section and enables high-speed protocols such as isolated SPI, RS-485 transceiver control, and real-time PWM feedback in motor drives. The SI88220BD-ASR maintains this rate with guaranteed timing margins across its full operating temperature range.
Does the SI88220BD-ASR include an integrated DC-DC converter?
Yes, the SI88220BD-ASR integrates a fully functional isolated DC-DC converter capable of delivering up to 5 W peak power at 3.3 V or 5.0 V on the secondary side. It uses internal power switches (VSW pin), requires only a miniature transformer and minimal passive components, and supports soft-start (SS pin) and shutdown (SH pin) functions - all documented in the Si88x2x datasheet Section 1 and Figure 1.
What safety certifications does the SI88220BD-ASR hold?
The SI88220BD-ASR is certified to UL 1577 (5000 VRMS for 1 minute), CSA 62368-1 (reinforced insulation), VDE 62368-1, and CQC GB4943.1. It also meets AEC-Q100 Grade 1 for automotive applications. These certifications are explicitly listed in the "Safety Regulatory Approvals" section of the official Skyworks datasheet (206584B, August 2023).
What is the purpose of the DNC/VREGB pin on the SI88220BD-ASR?
On the SI88220BD-ASR, the DNC/VREGB pin is designated "Do Not Connect" because this device is configured for ≤5.5 V isolated output. As stated in Table 1 of the datasheet, VREGB is only used as a voltage reference when output voltage exceeds 5.5 V - a condition not applicable to SI88220BD-ASR's standard 3.3/5.0 V DC-DC operation. Leaving it unconnected ensures proper functionality.
Can the SI88220BD-ASR operate with a 24 V input?
No, the SI88220BD-ASR is designed for low-voltage input (3.0–5.5 V) to isolated 3.3/5.0 V output. For 24 V input applications, Skyworks specifies the Si8842x or Si8862x families, which feature external power switches (ESW/RSN) and high-voltage optimized controllers. Using SI88220BD-ASR with 24 V would exceed absolute maximum ratings and damage the internal VSW switch.
SI88220BD-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
SI88220BD-ASR FAQ
1.How can I place an order for SI88220BD-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI88220BD-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 SI88220BD-ASR reliable?
The price and inventory of SI88220BD-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI88220BD-ASR is usually 5 days.
3.What payment methods are accepted for SI88220BD-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI88220BD-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI88220BD-ASR?
SI88220BD-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI88220BD-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 SI88220BD-ASR?
For technical support, including SI88220BD-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI88220BD-ASR requirements.
6.How does Aetrix verify that SI88220BD-ASR is sourced from the original manufacturer or authorized distributors?
All SI88220BD-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 SI88220BD-ASR meets industry standards.
7.What is the process for return or replacement of SI88220BD-ASR?
All SI88220BD-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI88220BD-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 SI88220BD-ASR part is unused and in its original packaging.
Return procedure for SI88220BD-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI88220BD-ASR Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
