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Skyworks Solutions Inc. SI88620BC-IS
- Part No.:
- SI88620BC-IS
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI88620BC-IS.pdf
- Description:
- DGTL ISO 5000VRMS 2CH GP 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,611
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Product details
Overview
SI88620BC-IS 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), delivering up to 2 W average output power, supporting data rates up to 100 Mbps, and providing 5000 VRMS isolation rating. It serves as a signal and power isolation solution in industrial inverters and automotive battery management systems.
For engineers reviewing the SI88620BC-IS datasheet, SI88620BC-IS pinout, SI88620BC-IS application, or SI88620BC-IS equivalent, key selection considerations include its external-FET-driven flyback topology, programmable soft-start and switching frequency, AEC-Q100 qualification, and SOIC-20 wide-body package with reinforced insulation certified to UL, VDE, CSA, and CQC standards.
Technical Context
The SI88620BC-IS implements two unidirectional RF-based digital isolation channels using capacitive silicon dioxide barriers, achieving 18 ns typical propagation delay and 100 Mbps max data rate. Its isolated DC-DC converter uses peak-current-mode-controlled flyback architecture with external NMOS switch (driven by ESW), current sensing via RSN, and secondary-side voltage feedback through VSNS.
This variant belongs to the Si8862x family optimized for high-voltage primary-side operation (up to 24 V), requiring external power FET and transformer. It features externally adjustable soft-start (SS pin), shutdown control (SH_FC pin), and programmable switching frequency (via SH_FC/SS RC network), with compensation set by 100 kΩ resistor + capacitor at COMP pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000 VRMS for one minute - meets reinforced insulation requirements per UL 1577, VDE 62368-1, and CSA 62368-1. |
| Data Rate | Up to 100 Mbps - supports high-speed serial interfaces such as SPI, RS-485, and CAN FD physical layer signaling across isolation barrier. |
| Propagation Delay | 18 ns typical, 23 ns max - enables precise timing-critical applications like motor gate drive synchronization and real-time control loops. |
| DC-DC Output Power | 2 W average at 5 V - sufficient to power secondary-side microcontrollers, ADCs, and isolated transceivers without external regulators. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial environments with extended thermal margin. |
| Transient Immunity | 100 kV/µs (typical) - ensures robust operation in noisy power electronics systems with fast-switching IGBTs/MOSFETs. |
| AEC-Q100 Grade | Qualified to Grade 1 - validated for automotive applications including battery monitoring and traction inverter control. |
Pinout & Package
SI88620BC-IS 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 | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6 | GNDP, RSN, ESW, VDDA, GNDA, SH_FC | Primary-side ground, current sense input, external NMOS driver, primary logic supply (≤5.5 V), primary ground, shutdown/frequency control. |
| 7, 8, 9, 10 | NC, SS, A1, A2 | No-connect, soft-start timing capacitor node, forward digital channel inputs (Side A). |
| 11, 12, 13, 14 | B1, B2, GNDB, VDDB | Reverse digital channel outputs (Side B), secondary ground, isolated logic supply output (3.3/5 V). |
| 15, 16, 17, 18, 19, 20 | VREGA, VSNS, COMP, NC, NC, NC | Voltage reference for external biasing of VDDA, isolated output voltage feedback, loop compensation node, three no-connect pins. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based digital isolation | Capacitive SiO₂ barrier with on/off keying modulation - delivers superior EMI immunity and eliminates magnetic field sensitivity vs. inductive or optical isolators. |
| External-FET flyback DC-DC | ESW pin drives external NMOS; RSN enables cycle-by-cycle current limiting - supports >5.5 V primary inputs (e.g., 24 V bus) while maintaining tight regulation. |
| Programmable soft-start | SS pin accepts external capacitor to control ramp time - prevents inrush current into secondary-side loads during power-up. |
| Secondary-side voltage sensing | VSNS feedback path transmits error signal across isolation barrier - eliminates optocoupler and associated bias circuitry, improving long-term reliability. |
| Thermal protection | Integrated junction temperature shutdown - protects device during overload or poor heatsinking conditions without external circuitry. |
Applications
| Industrial Motor Drives | Automotive Battery Management Systems |
|---|---|
Use Scenario: Isolating gate driver signals and feedback from high-side IGBTs in 3-phase inverters operating from 400 V DC bus. IC Role / Device Role / Timing Role: Provides dual-channel signal isolation plus 5 V/2 W isolated supply for gate driver ICs and current-sense amplifiers. Use Value: Enables compact, single-chip isolation + power solution with 18 ns timing precision, reducing component count versus discrete isolator + DC-DC combinations. |
Use Scenario: Monitoring cell voltages and temperatures in EV battery packs where primary side connects to 24 V vehicle bus and secondary side powers isolated ADCs and MCU. IC Role / Device Role / Timing Role: Delivers reinforced isolation between hazardous 24 V domain and SELV measurement circuits, with AEC-Q100 qualification for automotive use. Use Value: Eliminates need for separate isolated DC-DC converter and meets stringent automotive safety and lifetime reliability requirements. |
| Isolated PLC Analog I/O Modules | Renewable Energy Inverters |
Use Scenario: Providing galvanic isolation for 4–20 mA current loop transmitters and 0–10 V analog inputs in distributed control systems. IC Role / Device Role / Timing Role: Supplies isolated 5 V power to op-amps and ADCs while transmitting digital configuration and status data bidirectionally. Use Value: Supports high-EMI factory floor environments with 100 kV/µs transient immunity and low emissions due to dithered PWM control. |
Use Scenario: Isolating communication between grid-tie inverter DSP and high-voltage DC link sensors in solar string inverters. IC Role / Device Role / Timing Role: Transfers PWM enable/disable commands and fault signals across 1000 V+ potential difference while powering isolated gate drivers. Use Value: Achieves 5000 VRMS isolation rating with SOIC-20 creepage, enabling compliance with IEC 62109 and UL 1741 without additional spacing components. |
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 internal power switches (no external FET required); lower max output power (0.5 W); fixed 250 kHz switching frequency. | Better suited for low-power, space-constrained designs where external transformer drive is undesirable. | Select ADUM6210ARWZ when secondary load power ≤ 0.5 W and board area is critical; SI88620BC-IS preferred for >1 W loads or 24 V input. |
| ISO7821FDWR | No integrated DC-DC converter; requires external isolated power supply; higher data rate (200 Mbps); smaller SOIC-16 package. | Used where isolated power is already available or managed separately; ideal for ultra-high-speed digital isolation only. | Choose ISO7821FDWR when isolated power is sourced elsewhere and timing demands exceed 100 Mbps; SI88620BC-IS integrates both functions. |
Compared with ADUM6210ARWZ and ISO7821FDWR, SI88620BC-IS uniquely combines AEC-Q100 qualification, 2 W isolated power delivery from 24 V input, and programmable soft-start/frequency-making it optimal for automotive and industrial systems needing robust, configurable, self-powered isolation.
Availability
SI88620BC-IS is available at Aetrix Electronics and suitable for industrial motor drives, automotive battery management systems, and renewable energy inverters requiring stable component supply with long lifecycle support and automotive-grade traceability.
Supply support for SI88620BC-IS 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 developed specifically for high-voltage-to-low-voltage isolated power and signal transfer in automotive and industrial applications, emphasizing AEC-Q100 compliance, high transient immunity, and simplified system-level design.
FAQ
What is the maximum input voltage supported by SI88620BC-IS?
The SI88620BC-IS is designed for high-voltage primary-side operation up to 24 V DC. Its ESW pin drives an external NMOS FET, and RSN provides current sensing-enabling safe and efficient conversion from 24 V input to isolated 3.3 V or 5 V output. Input voltages exceeding 24 V are not supported and may damage the device.
Does SI88620BC-IS require an external transformer?
Yes, SI88620BC-IS requires an external miniature transformer (e.g., UMEC UTB02250s or Coilcraft TA7618-AL) to implement its isolated flyback DC-DC converter. The transformer provides galvanic isolation and voltage transformation; selection must match input/output voltage, turns ratio, leakage inductance, and isolation rating per AN901 design guidelines.
How is the switching frequency programmed on SI88620BC-IS?
Switching frequency is programmed using an external RC network connected between SH_FC and SS pins. The default frequency is 250 kHz, adjustable within 200–800 kHz range by selecting appropriate resistor and capacitor values. This allows EMI optimization during system integration without changing hardware layout.
What is the purpose of the VREGA pin on SI88620BC-IS?
VREGA is an internal voltage reference output used to bias an external NPN transistor for generating VDDA when no suitable ≤5.5 V supply exists on the primary side. It is not intended as a power rail but as a precision reference (typically 1.23 V) to support linear regulation of VDDA in high-input-voltage configurations.
Is SI88620BC-IS pin-compatible with other Si8862x variants like SI88621BC-IS?
No, SI88620BC-IS is not pin-compatible with SI88621BC-IS or SI88622BC-IS. While all share the SOIC-20 package and core pin functions, channel directionality differs: SI88620BC-IS has A1/A2 as inputs and B1/B2 as outputs (forward-only), whereas SI88621BC-IS supports bidirectional channels. Pin assignments for HF/XMTR/RCVR differ accordingly.
SI88620BC-IS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- 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:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
SI88620BC-IS FAQ
1.How can I place an order for SI88620BC-IS through Aetrix?
Please submit a Request for Quotation (RFQ) for SI88620BC-IS 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 SI88620BC-IS reliable?
The price and inventory of SI88620BC-IS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI88620BC-IS is usually 5 days.
3.What payment methods are accepted for SI88620BC-IS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI88620BC-IS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI88620BC-IS?
SI88620BC-IS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI88620BC-IS 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 SI88620BC-IS?
For technical support, including SI88620BC-IS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI88620BC-IS requirements.
6.How does Aetrix verify that SI88620BC-IS is sourced from the original manufacturer or authorized distributors?
All SI88620BC-IS 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 SI88620BC-IS meets industry standards.
7.What is the process for return or replacement of SI88620BC-IS?
All SI88620BC-IS units undergo pre-shipment inspection (PSI). If there is an issue with SI88620BC-IS, 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 SI88620BC-IS part is unused and in its original packaging.
Return procedure for SI88620BC-IS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI88620BC-IS Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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