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Skyworks Solutions Inc. SI88620EC-ASR
- Part No.:
- SI88620EC-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI88620EC-ASR.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
Inventory:1,398
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Product details
Overview
SI88620EC-ASR from Skyworks Solutions is a dual-channel digital isolator with integrated isolated DC-DC converter, delivering up to 2 W of regulated 3.3 V or 5.0 V output power on the secondary side. It supports data rates up to 100 Mbps, achieves propagation delay as low as 18 ns (typ), and provides reinforced isolation rated at 5000 VRMS. It is used in high-reliability industrial motor control and EV inverter gate drive circuits where compact isolated power + signal integrity are critical.
For engineers reviewing the SI88620EC-ASR datasheet, SI88620EC-ASR pinout, SI88620EC-ASR application, or SI88620EC-ASR equivalent, key selection criteria include its SOIC-20 wide-body package, AEC-Q100 qualification, external transformer-driven flyback topology, programmable soft-start via SS pin, and shutdown control via SH_FC pin - all validated for automotive-grade operation across –40 °C to +125 °C.
Technical Context
The SI88620EC-ASR implements two unidirectional CMOS digital isolation channels using RF-based on/off keying across a silicon dioxide capacitive barrier, enabling robust noise immunity and zero initialization requirement. Its isolated DC-DC converter 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 5 V isolated output).
This variant belongs to the Si8862x family optimized for high-input-voltage configurations: it requires an external NMOS switch driven by ESW, current sensing via RSN, and uses VREGA to bias VDDA when primary-side supply exceeds 5.5 V. Compensation network (RCOMP = 100 kΩ, CCOMP) is externally configured at the COMP pin for loop stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000 VRMS for 1 minute (UL 1577, reinforced insulation) |
| Data Rate | Up to 100 Mbps - enables high-speed SPI, UART, or PWM signal isolation in real-time control loops |
| Propagation Delay | 18 ns typical - ensures tight timing alignment between isolated control and feedback paths |
| DC-DC Output Power | 2 W average at 5 V - sufficient to power secondary-side MCU, gate drivers, or sensors without external regulators |
| Operating Temp | –40 °C to +125 °C - qualified for under-hood automotive and industrial ambient conditions |
| Transient Immunity | 100 kV/µs (typ) - withstands fast-rising common-mode noise in motor drives and inverters |
| AEC-Q100 Grade | Qualified per Rev G - meets automotive reliability and stress-test requirements for production ECUs |
Pinout & Package
SI88620EC-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, certified for reinforced insulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 15, 16, 17, 18 | Primary-side power & control | VDDP, GNDP, ESW, RSN, VREGA, SH_FC, SS, GNDA, VDDA - enable external FET switching, current sensing, soft-start timing, and primary-side bias |
| 7, 8, 13, 14, 19, 20 | Secondary-side power & isolation I/O | GNDB, VDDB, B1, B2, VSNS, COMP - provide isolated ground/power, dual-channel outputs, feedback sensing, and loop compensation |
| 9, 10, 11, 12 | Digital channel terminals | A1, A2, HF XMTR, HF RCVR - carry forward/reverse digital signals across isolation barrier using RF modulation |
| NC | No-connect | Pins 11 and 12 are NC on SI88620EC-ASR per Figure 4 and Table 1 - must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Integrated flyback DC-DC controller | Supports 24 V primary input → 3.3/5 V isolated output with external FET (ESW), sense resistor (RSN), and transformer - eliminates optocoupler-based feedback |
| Programmable soft-start | Configured via external capacitor on SS pin - prevents inrush current during power-up in sensitive gate-drive applications |
| Shutdown control | Active-high SH_FC pin (Pin 7) disables DC-DC operation - enables system-level power sequencing and fault recovery |
| High-EMI immunity | RF-based isolation with dithering and >100 kV/µs transient immunity - maintains signal integrity in noisy motor-control environments |
| Automotive-ready design | AEC-Q100 qualified, IMDS/CAMDS listed, PPAP-supportable - suitable for ASIL-B–compatible subsystems |
Applications
| Industrial Motor Control | EV Inverter Gate Drive |
|---|---|
Use Scenario: Isolating PWM signals and feedback from microcontroller to IGBT/SiC gate drivers in variable-frequency drives. IC Role / Device Role / Timing Role: Dual-channel isolator transmits gate enable and fault signals; integrated DC-DC powers driver ICs and current-sense amplifiers on high-side. Use Value: Eliminates need for separate isolated DC-DC module and discrete isolators - reduces BOM count and PCB area by >40% versus discrete solutions. | Use Scenario: Providing isolated power and signal transfer between vehicle battery domain (400 V+) and traction inverter control board. IC Role / Device Role / Timing Role: SI88620EC-ASR delivers 5 V/400 mA to isolated gate drivers while transmitting DESAT and UVLO status with <18 ns skew. Use Value: Meets reinforced insulation requirements (5000 VRMS) and AEC-Q100 Grade 0 - enables single-component compliance for ISO 26262 ASIL-C functional safety paths. |
| PLC Digital I/O Modules | Isolated Data Acquisition |
Use Scenario: Isolating digital inputs/outputs in programmable logic controllers exposed to 24 V field wiring with surge transients. IC Role / Device Role / Timing Role: SI88620EC-ASR isolates 24 V sensor inputs and 24 V relay outputs while powering downstream level-shifters and protection circuitry. Use Value: Withstands 100 kV/µs common-mode transients - prevents false triggering during lightning-induced surges on factory floor wiring. | Use Scenario: Isolating analog-to-digital converter interface and reference voltage supply in high-precision measurement systems. IC Role / Device Role / Timing Role: Provides clean, regulated 3.3 V to ADC's digital interface and isolated reference buffer; dual channels isolate SCLK/MISO/MOSI lines. Use Value: Sub-ns jitter and 100 Mbps capability support 16-bit SAR ADCs sampling at 1 MSPS - preserves ENOB in medical and test equipment. |
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 | 2-channel isolator + 500 mW isolated DC-DC; SOIC-16; no programmable frequency or soft-start | Limited to low-power sensor interfaces; insufficient for gate-driver biasing | Select when only 500 mW isolated power is needed and layout space is constrained |
| MAX14937EWE+T | 2-channel isolator + 1 W DC-DC; TSSOP-20; no AEC-Q100 qualification or RSN-based current sensing | Suitable for industrial automation but not automotive powertrain | Choose for cost-sensitive non-automotive designs requiring smaller footprint than SOIC-20 |
Compared with ADUM6210ARWZ and MAX14937EWE+T, SI88620EC-ASR uniquely combines 2 W isolated power, AEC-Q100 qualification, external FET control (ESW/RSN), and programmable soft-start - making it the only option among the three qualified for automotive inverter control with full functional safety support.
Availability
SI88620EC-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, long-term lifecycle assurance, and automotive-grade traceability.
Supply support for SI88620EC-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 is designed for high-voltage-to-low-voltage isolated power + signal transfer in automotive and industrial systems, emphasizing AEC-Q100 reliability, reinforced insulation, and external-FET flexibility for 24 V input domains.
FAQ
What is the maximum isolated output power supported by SI88620EC-ASR?
The SI88620EC-ASR supports up to 2 W of average isolated output power at 5.0 V, as specified in the datasheet for high-voltage-to-low-voltage configurations (e.g., 24 V input). This is achieved using an external NMOS power switch driven by the ESW pin and current sensing via the RSN pin. Peak power capability is higher but thermally limited by package and layout; continuous 2 W operation requires proper thermal management per AN901 design guidelines.
Does SI88620EC-ASR require an external transformer, and what are validated part numbers?
Yes, SI88620EC-ASR requires an external miniature transformer for its isolated flyback DC-DC converter. Validated transformers include UMEC UTB02250s (7–24 V input, 3.3–5.5 V output, 5 kVRMS), Coilcraft TA7618-AL (4.5–5.5 V input, 3–5.5 V output, 5 kVRMS), and Pulse PA4897NL (8–24 V input, 7–24 V output, 5 kVRMS). All meet leakage inductance, primary inductance, and isolation rating requirements per Skyworks AN901.
How is shutdown functionality implemented on SI88620EC-ASR?
Shutdown is implemented via the SH_FC pin (Pin 7), which disables the DC-DC converter when driven high. For normal operation, SH_FC must be tied to GNDA. This pin is functionally identical to the SH pin on Si882xx devices but located differently on the Si8862x SOIC-20 layout. The shutdown feature allows precise system-level power sequencing and fault-handling without affecting digital isolation channel operation.
What is the role of the RSN pin on SI88620EC-ASR, and how is it used?
The RSN pin (Pin 5) is the current-sense input for the external NMOS power switch in SI88620EC-ASR's flyback controller. It connects to a shunt resistor placed between the source of the external FET and GNDA, enabling peak-current-mode control and overcurrent protection. Proper RSN routing - short, low-inductance traces with Kelvin connection - is critical for stable regulation and transient response, as detailed in AN901 section 3.2.
Can SI88620EC-ASR operate with input voltages below 5.5 V, such as 3.3 V?
No - SI88620EC-ASR is specifically designed for high-voltage primary-side operation (up to 24 V), as confirmed by its Si8862x family designation and datasheet Sections 2.3.12–2.3.13. It requires VDDA ≤ 5.5 V but derives primary-side bias from an external regulator (e.g., using VREGA with NPN transistor) when input exceeds 5.5 V. For 3.3 V or 5 V input, Si8822x or Si8832x variants are appropriate alternatives.
SI88620EC-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:
- 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:
- 20-SOIC
SI88620EC-ASR FAQ
1.How can I place an order for SI88620EC-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI88620EC-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 SI88620EC-ASR reliable?
The price and inventory of SI88620EC-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI88620EC-ASR is usually 5 days.
3.What payment methods are accepted for SI88620EC-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI88620EC-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI88620EC-ASR?
SI88620EC-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI88620EC-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 SI88620EC-ASR?
For technical support, including SI88620EC-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI88620EC-ASR requirements.
6.How does Aetrix verify that SI88620EC-ASR is sourced from the original manufacturer or authorized distributors?
All SI88620EC-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 SI88620EC-ASR meets industry standards.
7.What is the process for return or replacement of SI88620EC-ASR?
All SI88620EC-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI88620EC-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 SI88620EC-ASR part is unused and in its original packaging.
Return procedure for SI88620EC-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI88620EC-ASR Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
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SI8710AC-B-ISR
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ISO7720FDR
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SI8710CC-B-ISR
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ISO6741FQDWRQ1
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ISO7741DWR
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