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Skyworks Solutions Inc. SI88622EC-ISR
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- Part No.:
- SI88622EC-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI88622EC-ISR.pdf
- Description:
- DGTL ISO 5000VRMS 2CH GP 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,062
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Product details
Overview
SI88622EC-ISR from Skyworks Solutions is a dual-channel digital isolator with integrated isolated DC-DC converter, delivering up to 5 W peak output power and supporting data rates up to 100 Mbps. It features two unidirectional isolation channels, reinforced insulation rated at 5000 VRMS, and operates across –40 °C to +125 °C. This device enables compact isolated power and signal transfer in high-reliability industrial motor control systems.
For engineers reviewing the SI88622EC-ISR datasheet, SI88622EC-ISR pinout, SI88622EC-ISR application, or SI88622EC-ISR equivalent, key selection considerations include its SOIC-20 wide-body package, external transformer-driven flyback topology, programmable soft-start and shutdown control, and AEC-Q100 qualification for automotive-grade designs.
Technical Context
The SI88622EC-ISR implements RF-based on/off keying modulation across a silicon dioxide capacitive isolation barrier, enabling robust noise immunity and sub-18 ns typical propagation delay. Its digital isolator side supports CMOS-compatible I/O with independent VDDA (primary) and VDDB (secondary) supplies.
The integrated DC-DC controller uses peak current mode control with closed-loop feedback via VSNS and COMP pins, supporting high-voltage-to-low-voltage conversion (e.g., 24 V input to 3.3/5 V output) using external NMOS switch (ESW), current sense (RSN), and programmable frequency (SH_FC/SS). It requires Type 1 loop compensation (RCOMP = 100 kΩ, CCOMP calculated per crossover frequency).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000 VRMS for one minute - meets UL 1577, CSA 62368-1, VDE 62368-1, and CQC GB4943.1 requirements. |
| Data Rate | Up to 100 Mbps - supports high-speed serial interfaces like SPI, RS-485, and CAN FD without timing bottlenecks. |
| Propagation Delay | 18 ns typical, 23 ns max - ensures tight timing alignment in real-time control loops. |
| DC-DC Output Power | Up to 5 W peak with external power switch - 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 - resists fast EFT/burst noise in motor drive and inverter applications. |
| Regulatory Certifications | AEC-Q100 Grade 1 qualified - supports PPAP documentation, IMDS/CAMDS compliance, and automotive production release. |
Pinout & Package
SI88622EC-ISR is housed in a RoHS-compliant SOIC-20 wide-body package (10.3 mm × 15.4 mm, 1.27 mm pitch) with creepage/clearance ≥8.3 mm, suitable for reinforced insulation in 250 VAC working voltage applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 15, 16, 17, 18, 19, 20 | NC / DNC / Reserved | Pins labeled NC or DNC/VREGB are not connected internally; DNC/VREGB must be left floating if output ≤5.5 V. |
| 7, 8, 13, 14 | SH_FC, SS, GNDA, GNDB | SH_FC enables shutdown and frequency control; SS sets soft-start time constant; GNDA/GNDB are isolated ground references. |
| 9, 10, 11, 12 | A1, A2, B1, B2 | Two unidirectional digital isolation channels: A1→B1 and A2→B2 (forward direction only). |
| VDDA, VDDB | Primary/Secondary Signal Supply | VDDA powers primary-side logic (≤5.5 V); VDDB powers secondary-side logic (3.3/5 V or up to 24 V with external regulation). |
| ESW, RSN, VSNS, COMP | DC-DC Control Interface | ESW drives external NMOS switch; RSN senses primary-side current; VSNS feeds back secondary-side voltage; COMP sets loop stability. |
| VREGA, GNDP | Reference & Primary Ground | VREGA provides internal reference for external NPN biasing of VDDA when primary supply >5.5 V; GNDP is primary-side power ground. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Flyback DC-DC Controller | Supports 24 V → 3.3/5 V conversion using external NMOS switch and transformer - eliminates need for separate isolated power IC. |
| Programmable Soft Start | Capacitor on SS pin controls inrush current limiting - prevents system-level brownouts during power-up. |
| External Frequency Control | RC network on SH_FC/SS pins adjusts switching frequency from 200 kHz to 800 kHz - optimizes EMI profile for specific board layouts. |
| Secondary-Side Voltage Sensing | VSNS pin enables precise regulation without optocouplers - improves line/load regulation and reduces component count. |
| Thermal Protection & Cycle Skipping | Automatic thermal shutdown and light-load cycle skipping - maintains efficiency and reliability across full load range. |
Applications
| Industrial Motor Drives | Automotive Battery Management Systems |
|---|---|
Use Scenario: Isolated gate driver power and feedback signaling in 3-phase inverter stacks for EV traction motors. IC Role / Device Role / Timing Role: Provides galvanically isolated 5 V secondary supply and two high-speed PWM feedback channels (A1/B1, A2/B2) with <23 ns propagation delay. Use Value: Enables compact, single-chip isolated power + signal solution replacing discrete isolators + isolated DC-DC modules - reducing PCB area by >40%. |
Use Scenario: Cell voltage monitoring and pack isolation in high-voltage (400–800 V) battery packs with distributed sensing nodes. IC Role / Device Role / Timing Role: Delivers reinforced 5000 VRMS isolation between high-side cell monitors and low-voltage MCU domain while powering analog front-ends. Use Value: Meets AEC-Q100 Grade 1 and ISO 26262 ASIL-B functional safety requirements without external certification overhead. |
| Programmable Logic Controllers | Renewable Energy Inverters |
Use Scenario: Digital I/O isolation and auxiliary 3.3 V supply generation in modular PLC backplanes with mixed 24 V/48 V field bus voltages. IC Role / Device Role / Timing Role: Converts 24 V primary supply to isolated 3.3 V for secondary-side logic while transmitting status and command signals across isolation barrier. Use Value: Eliminates need for external LDO and optocoupler pairs - simplifies BOM and improves long-term reliability in harsh factory environments. |
Use Scenario: Isolated communication and gate drive power in solar string inverters interfacing with MPPT controllers and grid-tie stages. IC Role / Device Role / Timing Role: Supplies isolated 5 V to SiC gate drivers and transmits fault/status signals (e.g., overcurrent, temperature) with <100 ns total latency. Use Value: Supports 100 Mbps data rate and 100 kV/µs transient immunity - critical for fast fault response in high-power photovoltaic systems. |
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 + 500 mW isolated DC-DC; no external switch support; fixed 250 kHz frequency; SOIC-16 package. | Limited to low-power secondary loads (<500 mW); unsuitable for driving gate drivers or multi-rail systems requiring >2 W. | Select ADUM6223ARWZ only when secondary-side power demand is ≤500 mW and layout space constraints favor SOIC-16. |
| ISO7821FDWWR | Dual-channel isolator only - no integrated DC-DC; requires external isolated power supply; 100 Mbps; SOIC-16. | Increases BOM count and design complexity due to need for separate isolated DC-DC converter and transformer. | Choose ISO7821FDWWR only when existing system already includes an isolated power rail and only signal isolation is needed. |
Compared with ADUM6223ARWZ and ISO7821FDWWR, SI88622EC-ISR uniquely combines 5 W peak isolated power delivery, external NMOS switch control, and AEC-Q100 qualification in a single SOIC-20 package - making it optimal for space-constrained, high-power, automotive-grade isolation designs.
Availability
SI88622EC-ISR is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management, and renewable energy inverter applications requiring stable component supply, long lifecycle support, and traceable sourcing.
Supply support for SI88622EC-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.
The Si88x2x family was designed to replace optocoupler-based isolation and discrete DC-DC converters in high-reliability industrial and automotive systems - integrating signal integrity, power delivery, and safety certification into one monolithic IC.
FAQ
What is the maximum isolated DC-DC output power supported by SI88622EC-ISR?
The SI88622EC-ISR supports up to 5 W peak isolated output power when used with an external NMOS power switch and properly sized transformer. Its internal controller regulates output voltage via secondary-side feedback (VSNS pin), enabling stable 3.3 V or 5 V outputs even under dynamic load conditions. Continuous output power depends on thermal design and transformer selection - typical sustained output is 2 W at full load with proper heatsinking and airflow.
Does SI88622EC-ISR support bidirectional data transmission?
No, SI88622EC-ISR provides two unidirectional digital isolation channels: A1→B1 and A2→B2. Each channel operates independently with RF-based on/off keying modulation across the capacitive isolation barrier. Bidirectional communication requires pairing with complementary devices or implementing protocol-level handshaking on separate channels - the SI88622EC-ISR itself does not include reverse-direction transceivers or auto-direction control logic.
Can SI88622EC-ISR operate with a 24 V primary-side input?
Yes, SI88622EC-ISR is specifically designed for high-voltage-to-low-voltage configurations, including 24 V input to 3.3 V or 5 V isolated output. It uses the ESW pin to drive an external NMOS switch and the RSN pin for primary-side current sensing - enabling efficient flyback operation at elevated input voltages. The VREGA pin supports external NPN biasing to generate VDDA when the primary supply exceeds 5.5 V.
What is the purpose of the SH_FC and SS pins on SI88622EC-ISR?
The SH_FC pin provides combined shutdown enable and programmable frequency control: pulling it high disables the DC-DC converter, while configuring an RC network between SH_FC and SS sets switching frequency from 200 kHz to 800 kHz. The SS pin accepts an external capacitor to program soft-start duration, limiting inrush current during power-up. Both functions are exclusive to Si886xx variants and are not available on Si882xx/Si883xx families.
Is SI88622EC-ISR qualified for automotive applications?
Yes, SI88622EC-ISR is AEC-Q100 Grade 1 qualified (–40 °C to +125 °C) and supports full automotive production requirements including AIAG-compliant PPAP documentation, IMDS/CAMDS material declarations, and process flow validation. It carries UL, CSA, VDE, and CQC safety certifications for reinforced insulation - meeting ISO 26262 ASIL-B functional safety prerequisites when implemented per Skyworks' AN901 design guidelines.
SI88622EC-ISR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 20-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:
- 20-SOIC
SI88622EC-ISR FAQ
1.How can I place an order for SI88622EC-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI88622EC-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 SI88622EC-ISR reliable?
The price and inventory of SI88622EC-ISR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI88622EC-ISR is usually 5 days.
3.What payment methods are accepted for SI88622EC-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI88622EC-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI88622EC-ISR?
SI88622EC-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI88622EC-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 SI88622EC-ISR?
For technical support, including SI88622EC-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI88622EC-ISR requirements.
6.How does Aetrix verify that SI88622EC-ISR is sourced from the original manufacturer or authorized distributors?
All SI88622EC-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 SI88622EC-ISR meets industry standards.
7.What is the process for return or replacement of SI88622EC-ISR?
All SI88622EC-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI88622EC-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 SI88622EC-ISR part is unused and in its original packaging.
Return procedure for SI88622EC-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI88622EC-ISR Tags
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