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Skyworks Solutions Inc. SI88622BD-ASR
- Part No.:
- SI88622BD-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI88622BD-ASR.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:4,774
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Product details
Overview
SI88622BD-ASR from Skyworks Solutions is a dual-channel digital isolator with integrated isolated DC-DC converter, designed for high-voltage-to-low-voltage conversion (e.g., 24 V input to 5 V isolated output), supporting up to 2 W average output power, 100 Mbps data rate, and 5000 VRMS isolation rating. It serves as a signal and power isolation solution in motor control inverters and industrial PLCs.
For engineers reviewing the SI88622BD-ASR datasheet, SI88622BD-ASR pinout, SI88622BD-ASR application, or SI88622BD-ASR equivalent, this page delivers verified technical context, SOIC-20 wide-body package mapping, confirmed AEC-Q100 qualification, and two validated alternative parts for high-voltage isolated power + signal transfer designs.
Technical Context
The SI88622BD-ASR implements RF-based capacitive digital isolation across two unidirectional channels using on/off keying modulation, delivering 18 ns typical propagation delay and immunity to magnetic fields. Its isolated flyback DC-DC controller operates with external NMOS switch (driven by ESW), current sensing via RSN, and secondary-side voltage feedback through VSNS.
This variant belongs to the Si8862x subfamily optimized for high-voltage primary-side inputs (up to 24 V) and low-voltage isolated outputs (3.3/5.0 V). It features externally programmable soft-start (SS pin), shutdown (SH_FC pin), and switching frequency (SH_FC/SS RC network), with Type 1 loop compensation at COMP requiring 100 kΩ + capacitor.
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 real-time encoder feedback. |
| Propagation Delay | 18 ns typical - enables precise timing-critical applications such as gate driver signaling and PWM synchronization. |
| DC-DC Output Power | 2 W average at 5 V - sufficient to power secondary-side microcontrollers, ADCs, and isolated transceivers without external regulators. |
| Operating Temp | –40 °C to +125 °C - qualified for automotive under-hood and industrial ambient environments. |
| AEC-Q100 Grade | Qualified to Grade 1 - validated for automotive electronics with PPAP support and IMDS/CAMDS compliance. |
| Transient Immunity | 100 kV/µs typical - ensures robust operation in noisy motor drive and inverter switching environments. |
Pinout & Package
SI88622BD-ASR is housed in a RoHS-compliant SOIC-20 wide-body package (10.3 mm × 15.4 mm, 1.27 mm pitch), rated for 5000 VRMS isolation and creepage/clearance ≥8.3 mm.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 18, 20, 19, 17, 16, 15 | Primary-side power & control | GNDP, RSN, ESW, VDDA, GNDA, VREGA supply reference and external switch interface for 24 V input stage. |
| 7, 8, 14, 13 | Configuration & safety | NC, SH_FC (shutdown/frequency control), SS (soft-start), NC - enable safe startup, EMI reduction, and fault recovery. |
| 9, 10, 12, 11 | Digital I/O channels | A1, A2 (primary-side inputs), B1, B2 (secondary-side outputs) - two independent unidirectional CMOS isolation paths. |
| VSNS, COMP, GNDB, VDDB | Secondary-side regulation | VSNS senses isolated output voltage; COMP sets loop stability; GNDB/VDDB power secondary logic and DC-DC output stage. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated flyback DC-DC controller | Supports 24 V → 5 V conversion with external NMOS switch (ESW), current sense (RSN), and secondary feedback (VSNS). |
| Programmable soft-start & shutdown | Capacitor-controlled SS pin and logic-level SH_FC pin allow adjustable ramp time and system-level power sequencing. |
| RF-based digital isolation | On/off keying modulation provides 100 Mbps throughput and 100 kV/µs CMTI - superior noise rejection vs. optocouplers or pulse-based isolators. |
| Secondary-side voltage sensing | Eliminates need for optocoupler-based feedback, improving line/load regulation and reducing BOM count in isolated power supplies. |
| AEC-Q100 Grade 1 qualification | Validated for automotive use with full PPAP documentation, IMDS/CAMDS listings, and extended temperature operation. |
Applications
| Industrial Motor Control | Automotive Inverter Systems |
|---|---|
Use Scenario: Isolating gate driver signals and feedback from MCU in 3-phase IGBT/SiC inverter stacks. IC Role / Device Role / Timing Role: Provides dual-channel signal isolation plus 5 V/2 W isolated power for gate driver ICs and current-sense amplifiers. Use Value: Enables compact, single-package isolation + power solution that replaces discrete optocouplers + isolated DC-DC modules, reducing PCB area by >40%. |
Use Scenario: Signal and power isolation in traction inverter control units for hybrid/electric vehicles. IC Role / Device Role / Timing Role: Delivers AEC-Q100-qualified 100 Mbps isolation and regulated 5 V supply to secondary-side safety monitors and position sensors. Use Value: Meets ASIL-B functional safety requirements via certified 5000 VRMS isolation and –40 °C to +125 °C operation without derating. |
| Programmable Logic Controllers | Isolated Data Acquisition |
Use Scenario: Digital I/O isolation between field-side 24 V sensors/actuators and 3.3 V/5 V controller backplane. IC Role / Device Role / Timing Role: Dual-channel isolator with integrated 5 V regulator powers isolated ADCs and level-shifts digital status lines. Use Value: Eliminates need for separate isolated DC-DC converter, simplifying design of DIN-rail mounted I/O modules with <10 mm board height. |
Use Scenario: High-precision sensor front-ends in industrial test equipment requiring galvanic separation from host USB/Ethernet interface. IC Role / Device Role / Timing Role: Transfers synchronized analog-to-digital conversion triggers and results across isolation barrier while powering isolated sigma-delta modulators. Use Value: Achieves <1 µs channel-to-channel skew and 18 ns prop delay - critical for multi-channel simultaneous sampling accuracy. |
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 |
|---|---|---|---|
| ADUM6210ARWZ | 2-channel isolator + 500 mW isolated DC-DC; uses iCoupler® transformer isolation; no external switch support; max 50 Mbps. | Limited to low-power secondary loads (e.g., small logic, not gate drivers); lacks programmable frequency/soft-start. | Select when board space is constrained and isolated power demand ≤500 mW; avoid for 24 V input or >50 Mbps timing-critical links. |
| ISO7821FDWR | 2-channel digital isolator only (no DC-DC); 100 Mbps; 5000 VRMS; requires external isolated power supply. | Requires separate isolated DC-DC module (e.g., RECOM RxxPxx series), increasing BOM count and layout complexity. | Select when existing isolated power architecture exists or when higher reliability is needed via split-function design with redundancy. |
Compared with ADUM6210ARWZ and ISO7821FDWR, SI88622BD-ASR uniquely integrates 2 W isolated power with 100 Mbps dual-channel isolation and full programmability (frequency, soft-start, shutdown) for 24 V input systems - enabling single-chip replacement of isolator + DC-DC combinations in motor drives and automotive inverters.
Availability
SI88622BD-ASR is available at Aetrix Electronics and suitable for industrial motor control, automotive inverter systems, and programmable logic controllers requiring stable component supply with AEC-Q100 qualification and long-term lifecycle support.
Supply support for SI88622BD-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 Si8862x product line was developed specifically for high-voltage industrial and automotive applications requiring integrated signal isolation and configurable isolated DC-DC conversion in a single SOIC-20 package.
FAQ
What is the maximum input voltage supported by the SI88622BD-ASR DC-DC converter?
The SI88622BD-ASR is designed for high-voltage primary-side operation, supporting up to 24 V DC input. Its external NMOS switch driver (ESW pin) and current sense input (RSN pin) enable robust flyback operation at this voltage level, as confirmed in the Si8862x datasheet Section 2.3.12. This makes SI88622BD-ASR suitable for direct integration into 24 V industrial bus and automotive battery-supplied systems without pre-regulation.
Does the SI88622BD-ASR require an external transformer, and if so, what are the key specifications?
Yes, the SI88622BD-ASR requires an external miniature transformer for its isolated DC-DC function. Validated transformers include UMEC UTB02250s (7–24 V input, 3.3–5.5 V output, 3.0:1 turns ratio, 5 kVRMS isolation) and Coilcraft TA7788-AL (12 V input, 5/15 V output, 5 kVRMS). These meet leakage inductance, primary inductance, and isolation rating requirements specified in Table 2 of the SI88622BD-ASR datasheet.
How does the SI88622BD-ASR achieve 100 Mbps data rate with low propagation delay?
The SI88622BD-ASR achieves 100 Mbps data rate and 18 ns typical propagation delay using RF-based capacitive isolation with on/off keying modulation across a silicon dioxide barrier. This architecture avoids the latency and jitter of pulse-width or edge-detection schemes, as detailed in Figure 5 and Section 2.2 of the SI88622BD-ASR datasheet. The result is deterministic timing behavior essential for real-time motor control loops.
Can the SI88622BD-ASR be used in safety-critical automotive applications?
Yes, the SI88622BD-ASR is AEC-Q100 Grade 1 qualified and certified to UL 1577 (5000 VRMS), CSA 62368-1, and VDE 62368-1 for reinforced insulation. It supports AIAG-compliant PPAP documentation and IMDS/CAMDS listings - making it suitable for ASIL-B automotive subsystems including traction inverter control, battery management interfaces, and chassis domain controllers.
What is the role of the VREGA and DNC/VREGB pins on the SI88622BD-ASR?
VREGA is an internal voltage reference output used with an external NPN transistor to generate a regulated supply for VDDA when primary-side voltage exceeds 5.5 V. DNC/VREGB is a Zener-referenced pin intended only for >5.5 V isolated outputs; it must be left unconnected (DNC) for 5 V or lower outputs, as explicitly stated in Table 1 of the SI88622BD-ASR datasheet.
SI88622BD-ASR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si88x2x
- Package/Case:
- 20-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:
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
SI88622BD-ASR FAQ
1.How can I place an order for SI88622BD-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI88622BD-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 SI88622BD-ASR reliable?
The price and inventory of SI88622BD-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI88622BD-ASR is usually 5 days.
3.What payment methods are accepted for SI88622BD-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI88622BD-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI88622BD-ASR?
SI88622BD-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI88622BD-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 SI88622BD-ASR?
For technical support, including SI88622BD-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI88622BD-ASR requirements.
6.How does Aetrix verify that SI88622BD-ASR is sourced from the original manufacturer or authorized distributors?
All SI88622BD-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 SI88622BD-ASR meets industry standards.
7.What is the process for return or replacement of SI88622BD-ASR?
All SI88622BD-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI88622BD-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 SI88622BD-ASR part is unused and in its original packaging.
Return procedure for SI88622BD-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI88622BD-ASR Tags
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