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Skyworks Solutions Inc. SI88622BC-ASR
- Part No.:
- SI88622BC-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI88622BC-ASR.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:4,160
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Product details
Overview
SI88622BC-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, 5000 VRMS isolation, and 100 Mbps data rate with 18 ns typical propagation delay. It serves as a complete signal + power isolation solution in motor control gate drivers and industrial PLC I/O modules.
For engineers reviewing the SI88622BC-ASR datasheet, SI88622BC-ASR pinout, SI88622BC-ASR application, or SI88622BC-ASR equivalent, this page delivers verified specifications, SOIC-20 wide-body package mapping, AEC-Q100 qualification status, soft-start and frequency-control capability, and real-world design context for isolated power + signal transfer in automotive and industrial systems.
Technical Context
The SI88622BC-ASR implements capacitive RF-based digital isolation with two unidirectional CMOS channels (A1/A2 → B1/B2), using on/off keying modulation across a silicon dioxide barrier for superior EMI immunity and magnetic field rejection. Its isolated DC-DC converter uses peak-current-mode flyback control 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 operation (up to 24 V), requiring external FET Q1 and sense resistor R4. It features programmable soft start (SS pin), shutdown/frequency control (SH_FC pin), and internal compensation tuning (COMP pin with 100 kΩ RCOMP), enabling precise regulation of isolated 3.3/5.0 V outputs without optocouplers.
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 (e.g., SPI, RS-485 transceiver control) across isolation barrier. |
| Propagation Delay | 18 ns typical - enables tight timing control in real-time motor gate drive feedback loops. |
| DC-DC Output Power | 2 W average at 5 V - sufficient to power secondary-side microcontrollers, ADCs, or isolated transceivers without external regulators. |
| Operating Temp Range | –40 °C to +125 °C - qualified for under-hood automotive and industrial ambient environments. |
| Transient Immunity | 100 kV/µs typical - ensures robust operation in noisy motor drive and inverter switching environments. |
| AEC-Q100 Grade | Qualified - supports automotive functional safety applications requiring PPAP documentation and IMDS/CAMDS compliance. |
Pinout & Package
SI88622BC-ASR 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, rated for 5000 VRMS working voltage. Pin 1 marked with dot; pins 1–10 on left side, 11–20 on right side, isolation barrier between pins 10/11.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GNDP | Primary-side power ground | Reference for VDDP and ESW; must be short-traced to VDDP bypass capacitor. |
| 2 RSN | Primary-side current sense input | Connects to shunt resistor for overcurrent protection and cycle-skipping control in external-FET mode. |
| 3 ESW | External switch driver output | Drives gate of external NMOS Q1; supports >5.5 V primary-side operation (e.g., 24 V input). |
| 4 VDDA | Primary-side signal supply | Accepts 3.0–5.5 V; powers A1/A2 inputs and internal logic; requires local 0.1 µF bypass. |
| 5 GNDA | Primary-side signal ground | Reference for VDDA and A1/A2; separate from GNDP to maintain isolation integrity. |
| 6 VREGA | Voltage reference output | Internal Zener-regulated ~5.5 V; used with external NPN to generate VDDA if no suitable supply exists. |
| 7 SH_FC | Shutdown / Frequency control | High = dc-dc shutdown; RC network sets PWM frequency (200–800 kHz) for EMI optimization. |
| 8 SS | Soft-start control | Capacitor to ground sets startup ramp time, limiting inrush into transformer and secondary loads. |
| 9 NC | No connect | Not bonded; leave unconnected per datasheet. |
| 10 NC | No connect | Not bonded; leave unconnected per datasheet. |
| 11 GNDB | Secondary-side signal ground | Reference for VDDB and B1/B2; galvanically isolated from GNDA/GNDP. |
| 12 VDDB | Secondary-side signal supply | Powered by isolated dc-dc output; supplies B1/B2 outputs and external loads (≤2 W). |
| 13 NC | No connect | Not bonded; leave unconnected per datasheet. |
| 14 VSNS | Secondary-side feedback input | Resistor divider from VDDB feeds error amplifier; sets regulated output voltage (e.g., 5 V via R1/R2 ratio). |
| 15 COMP | Compensation node | RC network (100 kΩ + CCOMP) stabilizes flyback loop; crossover frequency set per AN901 guidelines. |
| 16 DNC/VREGB | Secondary-side reference (DNC if ≤5.5 V) | Zener-connected; use only when VDDB > 5.5 V; otherwise leave floating or grounded. |
| 17 A1 | Primary-side input channel 1 | CMOS-compatible digital input; drives isolated B1 output with <18 ns prop delay. |
| 18 A2 | Primary-side input channel 2 | CMOS-compatible digital input; drives isolated B2 output; independent of A1 timing path. |
| 19 B1 | Secondary-side output channel 1 | CMOS output referenced to VDDB/GNDB; driven by A1 with fail-safe low default on UVLO. |
| 20 B2 | Secondary-side output channel 2 | CMOS output referenced to VDDB/GNDB; driven by A2; supports 100 Mbps toggle rate. |
Key Features
| Feature | Design Value |
|---|---|
| Dual unidirectional isolation channels | Independent A1→B1 and A2→B2 paths enable bidirectional signal routing (e.g., PWM + fault feedback) without cross-talk. |
| Integrated flyback DC-DC controller | Eliminates need for optocoupler-based feedback; achieves ±1.5% load regulation and <±2% line regulation at 2 W. |
| Programmable soft start & shutdown | SS capacitor sets controlled ramp; SH_FC pin allows system-level power sequencing and fault-induced shutdown. |
| External-FET topology (ESW + RSN) | Supports 24 V primary operation while maintaining low thermal stress; enables >5 W peak power with proper layout. |
| High EMI immunity (100 kV/µs) | RF modulation scheme rejects common-mode noise from inverters and motor drives, reducing need for external filtering. |
| AEC-Q100 qualification | Validated for automotive grade 1 (–40 °C to +125 °C); includes PPAP support, IMDS listing, and zero-defect manufacturing flow. |
Applications
| Motor Control Gate Driver | Industrial PLC Digital I/O Module |
|---|---|
Use Scenario: Isolating PWM signals and fault feedback between MCU and 600 V IGBT half-bridge in servo drives. IC Role / Device Role / Timing Role: SI88622BC-ASR provides simultaneous isolated gate drive signals (A1→B1, A2→B2) and powers gate driver ICs via its 5 V/2 W dc-dc output. Use Value: Eliminates separate isolated DC supply and optocouplers; reduces BOM count by 4 components while improving timing accuracy (<18 ns skew). |
Use Scenario: Providing isolated 24 V digital input conditioning and 5 V sensor power in modular PLC backplane. IC Role / Device Role / Timing Role: SI88622BC-ASR receives 24 V field inputs (A1/A2), isolates them to 3.3 V logic levels (B1/B2), and powers downstream ADCs via VDDB. Use Value: Enables single-chip isolation + power for two I/O channels; meets IEC 61000-4-5 surge immunity due to 5000 VRMS rating and 100 kV/µs CMTI. |
| Onboard Charger (OBC) Control Board | Automotive Battery Management System (BMS) |
Use Scenario: Isolating AC-DC controller communication and powering isolated CAN transceivers in EV onboard chargers. IC Role / Device Role / Timing Role: SI88622BC-ASR transmits control signals (A1→B1) and generates clean 5 V for isolated CAN FD PHY (B2 powered by VDDB). Use Value: Meets automotive EMC requirements (CISPR 25 Class 5) via dithered PWM and integrated EMI reduction; AEC-Q100 ensures reliability over 15-year vehicle life. |
Use Scenario: Isolating cell voltage monitoring ADC SPI bus and powering isolated analog front-ends in high-voltage battery packs (≥400 V). IC Role / Device Role / Timing Role: SI88622BC-ASR carries SPI clock/data (A1/A2) across barrier and supplies 3.3 V to isolated ADCs via VDDB with <1% ripple. Use Value: Replaces discrete isolators + LDOs; achieves 83% dc-dc efficiency at 1 W load, extending thermal margin in confined BMS enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel isolated power + signal applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM6210ARWZ | Single-channel isolator + 500 mW dc-dc; SOIC-16; no programmable frequency or soft start. | Limited to low-power sensors; insufficient for driving gate drivers or CAN PHYs. | Select when only one signal channel and <0.5 W isolated power are needed; lower cost but less flexible. |
| ISO7821FDWR | Two-channel isolator only (no dc-dc); SOIC-16; 100 Mbps; 11 kV/µs CMTI. | Requires external isolated DC supply (e.g., transformer + rectifier); increases layout complexity and size. | Select when system already provides isolated 5 V; better for ultra-high-noise environments needing >11 kV/µs immunity. |
Compared with ADUM6210ARWZ and ISO7821FDWR, SI88622BC-ASR uniquely integrates 2 W isolated power with dual 100 Mbps channels and automotive-grade programmability-enabling compact, self-powered isolation where space, thermal budget, and functional safety are critical.
Availability
SI88622BC-ASR is available at Aetrix Electronics and suitable for industrial motor control, automotive onboard chargers, and PLC digital I/O modules requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 traceability.
Supply support for SI88622BC-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 Si8862x product line was engineered specifically for high-voltage industrial and automotive systems requiring integrated signal isolation and reliable isolated power - eliminating optocouplers and external regulators in space-constrained designs.
FAQ
What is the maximum isolated output power supported by SI88622BC-ASR?
SI88622BC-ASR delivers up to 2 W average output power at 5 V on the secondary side. Peak power can reach 5 W briefly, but sustained operation above 2 W requires careful thermal management and optimized transformer selection per AN901. The device regulates output using secondary-side feedback (VSNS pin), ensuring stable voltage under dynamic load conditions typical in motor control and PLC applications. SI88622BC-ASR's efficiency reaches 83% with external power switch.
Does SI88622BC-ASR support AEC-Q100 qualification, and what does that cover?
Yes, SI88622BC-ASR is AEC-Q100 qualified for Grade 1 (–40 °C to +125 °C), including stress testing for temperature cycling, HTOL, ESD, and mechanical shock. This qualification covers the full die, package, and assembly process using automotive-specific flows, enabling use in engine control, battery management, and charging systems. SI88622BC-ASR also supports AIAG-compliant PPAP documentation and IMDS/CAMDS material declarations required for Tier 1 automotive supply chains.
How is the switching frequency programmed on SI88622BC-ASR?
Switching frequency on SI88622BC-ASR is set via an external RC network connected between SH_FC (Pin 7) and SS (Pin 8). The default frequency is 250 kHz, adjustable from 200 kHz to 800 kHz by selecting appropriate R and C values per Equation 2.3.3 in the datasheet. This programmability allows EMI optimization during system-level compliance testing. SI88622BC-ASR's dithered PWM further reduces spectral peaks compared to fixed-frequency converters.
Can SI88622BC-ASR operate with a 24 V primary-side input?
Yes, SI88622BC-ASR is explicitly designed for high-voltage primary-side operation up to 24 V, using its ESW pin to drive an external NMOS transistor (Q1) and RSN pin for current sensing. This configuration replaces internal switches used in Si882xx/3xx, enabling safe, efficient conversion to isolated 3.3 V or 5.0 V outputs. Transformer selection (e.g., UMEC UTB02250s or Coilcraft TA7788-AL) must match 24 V input per Table 2 in the datasheet. SI88622BC-ASR's VREGA pin supports generating VDDA if no 3.3–5.5 V rail exists.
What isolation certifications does SI88622BC-ASR hold?
SI88622BC-ASR is certified to UL 1577 (5000 VRMS, 1 min), CSA 62368-1 (reinforced insulation), VDE 62368-1 (conformity), and CQC GB4943.1. It meets basic insulation per VDE 60747-17 (pending). These approvals validate its suitability for safety-critical applications in industrial automation and electric vehicles. The SOIC-20 wide-body package provides ≥8.3 mm creepage/clearance, satisfying IPC-2221B requirements for 5000 VRMS working voltage. SI88622BC-ASR's 100 kV/µs CMTI exceeds IEC 61800-3 for drive systems.
SI88622BC-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
SI88622BC-ASR FAQ
1.How can I place an order for SI88622BC-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI88622BC-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 SI88622BC-ASR reliable?
The price and inventory of SI88622BC-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI88622BC-ASR is usually 5 days.
3.What payment methods are accepted for SI88622BC-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI88622BC-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI88622BC-ASR?
SI88622BC-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI88622BC-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 SI88622BC-ASR?
For technical support, including SI88622BC-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI88622BC-ASR requirements.
6.How does Aetrix verify that SI88622BC-ASR is sourced from the original manufacturer or authorized distributors?
All SI88622BC-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 SI88622BC-ASR meets industry standards.
7.What is the process for return or replacement of SI88622BC-ASR?
All SI88622BC-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI88622BC-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 SI88622BC-ASR part is unused and in its original packaging.
Return procedure for SI88622BC-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI88622BC-ASR Tags
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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
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ISO7721DR
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ISO7721FDR
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SI8710CC-B-ISR
Skyworks Solutions Inc.
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ISO6741FQDWRQ1
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ISO7721DWVR
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ISO7762FDBQR
Texas Instruments
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ISO7741DWR
Texas Instruments
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ISO7741FDWR
Texas Instruments
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