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Skyworks Solutions Inc. SI88622EC-ASR
- Part No.:
- SI88622EC-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI88622EC-ASR.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:3,563
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Product details
Overview
SI88622EC-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 rating, and 100 kV/µs transient immunity. It operates across –40 to +125 °C and is AEC-Q100 qualified for automotive use.
For engineers reviewing the SI88622EC-ASR datasheet, SI88622EC-ASR pinout, SI88622EC-ASR application, or SI88622EC-ASR equivalent, this device delivers verified isolated power and signal transfer in space-constrained industrial and automotive systems where primary-side voltage exceeds 5.5 V and secondary-side regulation must be precise, low-noise, and optocoupler-free.
Technical Context
The SI88622EC-ASR implements a modified flyback DC-DC topology with external NMOS switch control via ESW pin and current sensing via RSN pin, enabling robust 24 V primary-side operation. Its RF-based digital isolation uses on/off keying across a silicon dioxide barrier, delivering 18 ns typical propagation delay and immunity to magnetic fields.
Feedback is closed-loop via VSNS pin with secondary-side voltage sensing, eliminating optocouplers; compensation is implemented externally at COMP pin using 100 kΩ resistor and calculated capacitor. Soft-start (SS) and shutdown/frequency control (SH_FC) are externally programmable features unique to Si886xx variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000 VRMS for one minute - meets reinforced insulation requirements per UL 1577, CSA 62368-1, and VDE 62368-1. |
| DC-DC Output Power | 2 W average at 5 V - sufficient to power isolated logic and small peripherals without additional regulators. |
| Digital Data Rate | Up to 100 Mbps - supports high-speed serial interfaces including SPI, RS-485, and CAN FD physical layer signaling. |
| Propagation Delay | 18 ns typical - enables tight timing budgets in motor control gate drivers and real-time feedback loops. |
| Operating Temperature | –40 to +125 °C - validated for under-hood automotive and industrial ambient environments. |
| Transient Immunity | 100 kV/µs (typical) - ensures reliable operation in noisy inverter and PLC I/O stages. |
| AEC-Q100 Grade | Qualified per AEC-Q100 Rev G - supports PPAP documentation and IMDS/CAMDS compliance for automotive OEMs. |
Pinout & Package
SI88622EC-ASR is housed in a RoHS-compliant SOIC-20 wide-body package (10.3 mm × 15.4 mm, 1.27 mm pitch), optimized for creepage/clearance compliance in 24 V industrial and automotive systems.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 18, 20, 19, 17, 16, 15 | DC-DC Input Side / Digital Primary Side | GNDP, RSN, ESW, VDDA, GNDA, VREGA - provide primary-side power switching, current sense, soft-start, shutdown/frequency control, and regulated reference for ≥24 V input configurations. |
| 7, 8, 14, 13, 9, 10, 12, 11 | Digital Isolator Channels | A1, A2, B1, B2, HF XMTR, HF RCVR - two unidirectional CMOS channels with RF modulation; pins 9–12 carry isolated data paths across barrier. |
| GNDB, VDDB, VSNS, COMP, NC | DC-DC Output Side / Digital Secondary Side | GNDB/VDDB power secondary logic; VSNS enables precision secondary-side voltage feedback; COMP sets loop stability; NC pins are unconnected. |
Key Features
| Feature | Design Value |
|---|---|
| Secondary-side voltage sensing | Eliminates optocouplers and bias circuitry, improving long-term reliability and load regulation accuracy in isolated supplies. |
| Externally programmable soft-start (SS) | Reduces inrush current during power-up by controlling startup ramp rate via external capacitor - critical for battery-fed 24 V systems. |
| ESW-driven external NMOS switch support | Enables safe, efficient switching at >5.5 V primary voltages (e.g., 24 V bus), avoiding internal switch limitations of lower-voltage variants. |
| 100 kV/µs CMTI | Prevents data corruption in high-dV/dt environments such as IGBT gate driver feedback paths and inverter phase-leg monitoring. |
| AEC-Q100 qualification with PPAP support | Validates manufacturing robustness and defectivity control for automotive applications including HEV/EV battery management and traction inverters. |
Applications
| Industrial Motor Control | Automotive Battery Management |
|---|---|
Use Scenario: Isolated gate drive and current sensing in 3-phase inverter stacks for servo drives and HVAC compressors. IC Role / Device Role / Timing Role: SI88622EC-ASR provides galvanically isolated power (5 V) and bidirectional signal paths (A1/B1, A2/B2) for PWM feedback and fault reporting. Use Value: Enables compact, single-chip isolation solution replacing discrete optocouplers + isolated DC-DC, reducing BOM count and layout area by >40%. |
Use Scenario: Cell voltage monitoring and pack isolation in 400 V EV battery packs with distributed sensing nodes. IC Role / Device Role / Timing Role: SI88622EC-ASR isolates analog front-end ADC references and digital SPI communication between MCU andAFE ICs. Use Value: Delivers certified 5000 VRMS isolation and AEC-Q100 reliability while powering isolated ADC domain directly from 24 V auxiliary rail. |
| Programmable Logic Controller I/O | Renewable Energy Inverters |
Use Scenario: Digital input/output modules handling 24 V field-side signals with microcontroller-side logic-level interfacing. IC Role / Device Role / Timing Role: SI88622EC-ASR isolates discrete I/O lines and supplies isolated 5 V to downstream level shifters and protection ICs. Use Value: Integrates power and signal isolation in one SOIC-20 footprint, simplifying PCB stackup and meeting IEC 61000-4-5 surge immunity requirements. |
Use Scenario: Isolated communication between DC-link voltage sensors and central controller in solar string inverters. IC Role / Device Role / Timing Role: SI88622EC-ASR transmits fast overvoltage alerts and enables isolated firmware updates via UART across HV/LV domains. Use Value: Supports 100 Mbps data rate and 18 ns prop delay for sub-microsecond fault response, critical for anti-islanding and grid-synchronization timing. |
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 | Integrated 500 mW DC-DC; no external switch support; max 3.3 V output; SOIC-16 package. | Limited to ≤5 V input/output; insufficient for 24 V primary-side designs requiring >1 W output. | Select only for low-power, low-voltage (<5.5 V) isolation where board space is constrained and external FETs are undesirable. |
| ISO7821FDWWR | No integrated DC-DC; requires external isolated supply; 100 Mbps; SOIC-16; 5000 VRMS. | Demands separate isolated power design (e.g., transformer + regulator), increasing complexity and component count. | Choose when system already includes an isolated DC-DC stage and only signal isolation is needed with ultra-low EMI profile. |
Compared with ADUM6210ARWZ and ISO7821FDWWR, SI88622EC-ASR uniquely combines 24 V-compatible external-FET DC-DC control, 2 W output capability, and AEC-Q100 qualification in a single SOIC-20 package - making it the only drop-in solution for automotive and industrial 24 V input systems requiring both power and signal isolation.
Availability
SI88622EC-ASR is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management, PLC I/O modules, renewable energy inverters, and high-reliability embedded systems requiring stable component supply across extended temperature and safety-critical environments.
Supply support for SI88622EC-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 Si886xx product line was engineered specifically for high-voltage-to-low-voltage isolated power and signal transfer in automotive and industrial applications where primary-side voltage exceeds 5.5 V and regulatory certification is mandatory.
FAQ
What is the maximum input voltage supported by SI88622EC-ASR?
The SI88622EC-ASR is designed for high-voltage primary-side operation up to 24 V, using its ESW pin to drive an external NMOS switch and RSN pin for current sensing. It does not support internal switching above 5.5 V, so external FET control is required for 24 V inputs - confirmed in Section 2.3.4 and Figure 9 of the datasheet.
Does SI88622EC-ASR support adjustable DC-DC switching frequency?
Yes, SI88622EC-ASR supports programmable frequency from 200 kHz to 800 kHz via external RC network connected to SH_FC and SS pins. This feature is exclusive to Si883xx/Si886xx families and enables EMI optimization - detailed in Section 2.3.3 and Figure 9 of the datasheet.
What is the purpose of the VREGA pin on SI88622EC-ASR?
VREGA is an internal voltage reference output used with an external NPN transistor, resistor, and capacitor to generate a regulated supply for VDDA when primary-side voltage exceeds 5.5 V. It eliminates need for a separate linear regulator - specified in Section 2.3.5 and Figure 9 of the datasheet.
Can SI88622EC-ASR be used in AEC-Q100 automotive applications?
Yes, SI88622EC-ASR is AEC-Q100 qualified (Grade 0, –40 to +125 °C), with AIAG-compliant PPAP documentation and IMDS/CAMDS listing support. It is explicitly designated as "Automotive-grade OPN" in the datasheet's Key Features section and approved for HEV/EV systems.
What transformer part numbers are validated for use with SI88622EC-ASR?
Validated transformers include UMEC UTB02250s (7–24 V → 3.3–5.5 V), Coilcraft TA7788-AL (12 V → 5/15 V), and Pulse PA4897NL (8–24 V → 7–24 V), all rated for ≥5 kVRMS isolation. These are listed in Table 2 of the datasheet and support Si886xx's external-FET flyback architecture.
SI88622EC-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
SI88622EC-ASR FAQ
1.How can I place an order for SI88622EC-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI88622EC-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 SI88622EC-ASR reliable?
The price and inventory of SI88622EC-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI88622EC-ASR is usually 5 days.
3.What payment methods are accepted for SI88622EC-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI88622EC-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI88622EC-ASR?
SI88622EC-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI88622EC-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 SI88622EC-ASR?
For technical support, including SI88622EC-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI88622EC-ASR requirements.
6.How does Aetrix verify that SI88622EC-ASR is sourced from the original manufacturer or authorized distributors?
All SI88622EC-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 SI88622EC-ASR meets industry standards.
7.What is the process for return or replacement of SI88622EC-ASR?
All SI88622EC-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI88622EC-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 SI88622EC-ASR part is unused and in its original packaging.
Return procedure for SI88622EC-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI88622EC-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
Texas Instruments
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ISO7721DR
Texas Instruments
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ISO7721FDR
Texas Instruments
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SI8710CC-B-ISR
Skyworks Solutions Inc.
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ISO6741FQDWRQ1
Texas Instruments
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ISO7721DWVR
Texas Instruments
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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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