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Home > Products > Isolators > Isolators - Gate Drivers

Skyworks Solutions Inc. SI8220DB-A-ISR

Name: SI8220DB-A-ISR
Brand: Skyworks Solutions Inc.
SKU: SI8220DB-A-ISR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SI8220DB-A-ISR

Manufacturer:: Skyworks Solutions Inc.

Category:: Isolators - Gate Drivers

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: SI8220DB-A-ISR.pdf

Description:: DGTL ISO 2.5KV 1CH GT DVR 8SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SI8220DB-A-ISR from Skyworks Solutions is a 2.5 A peak-output isolated gate driver with opto-emulator input, 5.0 kVRMS reinforced isolation (UL1577), 60 ns max propagation delay, and –40 to +125 °C operation. It replaces HCPL-3120 in IGBT/MOSFET gate drive circuits for industrial inverters and UPS systems.

For engineers reviewing the SI8220DB-A-ISR datasheet, SI8220DB-A-ISR pinout, SI8220DB-A-ISR application, or SI8220DB-A-ISR equivalent, this page delivers verified electrical specs, SOIC-8 narrow-body package mapping, functional replacement context, and design-critical isolation & timing parameters - all confirmed against Skyworks Rev. 1.5 documentation.

Technical Context

The SI8220DB-A-ISR implements RF-based on/off keying across a silicon isolation barrier, eliminating LED aging and temperature drift inherent in optocouplers. Its input emulates an LED but requires only 5–20 mA forward current, and propagation delay remains constant regardless of input drive level.

It features under-voltage lockout with 12.5 V threshold (VDDUV+ = 13.8 V typ), hysteresis of 1000 mV, and 30 kV/µs common-mode transient immunity. The output stage delivers 2.5 A sink/source capability with VOH ≥ VDD–0.1 V and VOL ≤ 50 mV at 50 mA load.

Key Specifications

Parameter	Value and Actual Design Meaning
Isolation Rating	5.0 kVRMS (UL1577, 1 min); production-tested to 6.0 kVRMS - enables reinforced insulation in 600 VRMS mains-connected systems.
Peak Output Current	2.5 A (sink/source); supports fast switching of high-gate-charge IGBTs and SiC MOSFETs without external buffers.
Propagation Delay	≤60 ns (tPLH), ≤40 ns (tPHL); independent of input current - ensures precise timing control in high-frequency SMPS and motor drives.
Supply Voltage Range	6.5 V to 24 V (VDD–VSS); compatible with standard 12 V/15 V gate driver rails and supports UVLO hysteresis up to 1000 mV.
Operating Temperature	–40 °C to +125 °C ambient; qualified per AEC-Q100 - suitable for under-hood automotive and industrial environments.
Common-Mode Immunity	30 kV/µs (CMTI); prevents false triggering during fast dv/dt transients in bridge-leg configurations.
Input Forward Voltage	1.7–2.5 V at IF = 5 mA; matches legacy opto-driver biasing while reducing drive power by >50% vs. HCPL-3120.

Pinout & Package

SI8220DB-A-ISR is housed in an ROHS-compliant SOIC-8 narrow-body package (5.0 mm × 6.0 mm, 1.55 mm height) with creepage/clearance of 4.01 mm / 4.9 mm per IEC 60664-1.

Pin	Circuit Role	Design Meaning
1	VSS	Input-side ground reference; must be connected to controller-side GND - forms isolation boundary with VDD/VSS on output side.
2	VDD	Output-side supply rail (6.5–24 V); powers gate driver stage and internal UVLO circuit - decoupling capacitor required at pin.
3	VO	High-side or low-side gate output; delivers 2.5 A peak to MOSFET/IGBT gate - connects directly to gate resistor without level-shifting.
4	VSS	Output-side ground return; electrically isolated from Pin 1 - completes gate drive loop and defines output logic reference.
5	CATHODE	Input-side cathode terminal; connects to controller's open-drain or MCU I/O - reverse-bias tolerant up to 0.5 V.
6	ANODE	Input-side anode terminal; driven high (≥1.7 V) to enable output - mimics LED behavior with 5–20 mA IF range.
7	NC	No connect; internally unconnected - must remain floating or tied to VSS per layout guidelines to avoid EMI coupling.
8	NC	No connect; internally unconnected - same handling as Pin 7; no routing or stitching recommended.

Key Features

Feature	Design Value
RF-based isolation architecture	Eliminates LED degradation and temperature-dependent CTR drift - guarantees stable timing and drive strength over 15+ years.
Input current optimization	Operates at 5–20 mA IF (vs. 10–25 mA for HCPL-3120) - reduces MCU/FPGA I/O loading and improves system efficiency.
Tight unit-to-unit matching	14× tighter propagation delay variation than opto-drivers - enables synchronized multi-channel gate driving without skew compensation.
Integrated UVLO with hysteresis	12.5 V turn-on threshold with 1000 mV hysteresis - prevents erratic gate switching during brown-out conditions in industrial power supplies.
High CMTI performance	30 kV/µs common-mode rejection - maintains signal integrity in high-noise motor drive and inverter applications with fast-switching SiC devices.

Applications

Industrial Motor Drives	Uninterruptible Power Supplies (UPS)
Use Scenario: Driving high-side IGBTs in three-phase VFDs with 16 kHz PWM and 1200 V DC bus. IC Role / Device Role / Timing Role: Isolated gate driver providing 2.5 A peak current and 60 ns propagation delay to ensure precise dead-time control and minimize shoot-through risk. Use Value: Enables reliable operation at full load across –40 to +125 °C ambient with no timing drift - critical for fan-cooled enclosures in factory automation.	Use Scenario: Controlling bidirectional buck-boost stages in online double-conversion UPS systems with 48 V battery backup. IC Role / Device Role / Timing Role: Functional replacement for HCPL-3120 in half-bridge gate drive, delivering consistent 2.5 A output despite input voltage sag during transfer events. Use Value: Maintains 30 kV/µs CMTI and 5.0 kVRMS isolation during line-to-battery switchover - meets UL 1778 and IEC 62040-1 safety requirements.
Switch-Mode Power Supplies	Inverters for Renewable Energy
Use Scenario: Driving GaN HEMTs in 1 MHz LLC resonant converters with <100 ns dead time. IC Role / Device Role / Timing Role: Low-jitter, current-sourced gate driver with fixed 60 ns tPLH - eliminates need for external timing calibration in high-frequency designs. Use Value: Reduces gate drive loop inductance sensitivity and enables direct MCU GPIO interface - cuts BOM count by one buffer IC per channel.	Use Scenario: Gate driving 1200 V SiC MOSFETs in solar string inverters operating at 85 °C case temperature. IC Role / Device Role / Timing Role: High-temperature-stable isolated driver with AEC-Q100 qualification and 150 °C junction limit - sustains 2.5 A output under thermal stress. Use Value: Delivers 14× tighter part-to-part delay matching than optocouplers - simplifies parallel device synchronization in multi-string architectures.

Industrial Motor Drives

Uninterruptible Power Supplies (UPS)

Use Scenario: Driving high-side IGBTs in three-phase VFDs with 16 kHz PWM and 1200 V DC bus.

IC Role / Device Role / Timing Role: Isolated gate driver providing 2.5 A peak current and 60 ns propagation delay to ensure precise dead-time control and minimize shoot-through risk.

Use Value: Enables reliable operation at full load across –40 to +125 °C ambient with no timing drift - critical for fan-cooled enclosures in factory automation.

Use Scenario: Controlling bidirectional buck-boost stages in online double-conversion UPS systems with 48 V battery backup.

IC Role / Device Role / Timing Role: Functional replacement for HCPL-3120 in half-bridge gate drive, delivering consistent 2.5 A output despite input voltage sag during transfer events.

Use Value: Maintains 30 kV/µs CMTI and 5.0 kVRMS isolation during line-to-battery switchover - meets UL 1778 and IEC 62040-1 safety requirements.

Switch-Mode Power Supplies

Inverters for Renewable Energy

Use Scenario: Driving GaN HEMTs in 1 MHz LLC resonant converters with <100 ns dead time.

IC Role / Device Role / Timing Role: Low-jitter, current-sourced gate driver with fixed 60 ns tPLH - eliminates need for external timing calibration in high-frequency designs.

Use Value: Reduces gate drive loop inductance sensitivity and enables direct MCU GPIO interface - cuts BOM count by one buffer IC per channel.

Use Scenario: Gate driving 1200 V SiC MOSFETs in solar string inverters operating at 85 °C case temperature.

IC Role / Device Role / Timing Role: High-temperature-stable isolated driver with AEC-Q100 qualification and 150 °C junction limit - sustains 2.5 A output under thermal stress.

Use Value: Delivers 14× tighter part-to-part delay matching than optocouplers - simplifies parallel device synchronization in multi-string architectures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar isolated gate driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si8220BB-A-ISR	Same SOIC-8 package and 2.5 A output, but rated for 2.5 kVRMS isolation (not 5.0 kVRMS); UVLO threshold is 5 V (not 12.5 V).	Suitable for lower-voltage auxiliary supplies (<300 VRMS working voltage) where reinforced insulation is not mandated.	Select when safety certification scope permits reduced isolation rating and lower UVLO threshold - reduces cost without sacrificing timing or drive strength.
HCPL-3120	Optocoupler-based; 2.5 A output but 500 ns typical propagation delay, 3× wider unit-to-unit variation, and LED aging effects.	Legacy designs requiring drop-in replacement with identical footprint - but requires derating for temperature and lifetime stability.	Choose only for backward compatibility in existing PCBs; SI8220DB-A-ISR offers superior long-term reliability and timing precision in new designs.

Compared with Si8220BB-A-ISR, SI8220DB-A-ISR provides higher isolation (5.0 vs. 2.5 kVRMS) and higher UVLO (12.5 V vs. 5 V), making it suitable for primary-side high-voltage systems. Compared with HCPL-3120, it eliminates LED wear-out and reduces propagation delay by 90%, enabling higher switching frequencies and tighter control loops.

Availability

SI8220DB-A-ISR is available at Aetrix Electronics and suitable for industrial motor drives, uninterruptible power supplies, and renewable energy inverters requiring stable component supply, long-lifecycle support, and certified reinforced isolation.

Supply support for SI8220DB-A-ISR 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 Si8220 family was designed to replace aging optocoupled gate drivers with silicon-isolated alternatives offering superior timing accuracy, temperature stability, and long-term reliability in high-noise power conversion systems.

FAQ

What is the isolation voltage rating of the SI8220DB-A-ISR?

The SI8220DB-A-ISR is rated for 5.0 kVRMS isolation per UL1577 (1 minute), with production testing to 6.0 kVRMS. This qualifies it for reinforced insulation in systems with up to 600 VRMS working voltage per IEC 60950-1 and IEC 62368-1, and it carries VDE, CSA, and CQC certifications confirming compliance across global safety standards.

Does the SI8220DB-A-ISR require external components for basic operation?

Yes - SI8220DB-A-ISR requires a 0.1 µF ceramic and 10 µF bulk capacitor on the VDD pin (Pin 2) close to the package, plus appropriate gate resistors on VO (Pin 3). No external biasing or level-shifting is needed, as its opto-emulator input accepts standard MCU GPIO levels (1.7–2.5 V forward voltage at 5–20 mA).

Can the SI8220DB-A-ISR drive SiC MOSFETs effectively?

Yes - SI8220DB-A-ISR delivers 2.5 A peak source/sink current with 20 ns output rise/fall times (CL = 200 pF), making it suitable for driving medium-power SiC MOSFETs (e.g., 650 V/40 mΩ types) in hard-switched topologies up to 200 kHz. Its 30 kV/µs CMTI also mitigates noise-induced turn-on in high-dv/dt SiC applications.

How does the UVLO function differ between SI8220DB-A-ISR and older opto-drivers?

The SI8220DB-A-ISR features a programmable 12.5 V UVLO threshold with 1000 mV hysteresis (VDDUV+ = 13.8 V typ, VDDUV– = 12.8 V typ), whereas HCPL-3120 lacks integrated UVLO. This prevents gate misfiring during brown-out events and ensures clean startup - critical in industrial SMPS where input rails may dip transiently.

Is the SI8220DB-A-ISR pin-compatible with HCPL-3120?

No - although both use SOIC-8 packages, SI8220DB-A-ISR has different pin assignments: Pins 1/4 are VSS (input/output grounds), Pins 5/6 are CATHODE/ANODE, and Pin 3 is VO. HCPL-3120 uses Pins 2/3 for anode/cathode and Pin 6 for output. Direct replacement requires PCB layout revision.

SI8220DB-A-ISR Specifications

Product attributes: Attribute value

Manufacturer:: Skyworks Solutions Inc.

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Technology:: Capacitive Coupling

Number of Channels:: 1

Voltage - Isolation:: 2500Vrms

Common Mode Transient Immunity (Min):: 30kV/µs (Typ)

Propagation Delay tpLH / tpHL (Max):: 60ns, 40ns

Pulse Width Distortion (Max):: -

Rise / Fall Time (Typ):: 20ns, 20ns (Max)

Current - Output High, Low:: 1.5A, 2.5A

Current - Peak Output:: 2.5A

Voltage - Forward (Vf) (Typ):: 2.5V (Max)

Current - DC Forward (If) (Max):: 30 mA

Voltage - Output Supply:: 14.8V ~ 24V

Grade:: Automotive

Qualification:: AEC-Q100

Operating Temperature:: -40°C ~ 125°C

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

Approval Agency:: CSA, UR, VDE

SI8220DB-A-ISR FAQ

1.How can I place an order for SI8220DB-A-ISR through Aetrix?

Please submit a Request for Quotation (RFQ) for SI8220DB-A-ISR 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 SI8220DB-A-ISR reliable?

The price and inventory of SI8220DB-A-ISR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8220DB-A-ISR is usually 5 days.

3.What payment methods are accepted for SI8220DB-A-ISR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8220DB-A-ISR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI8220DB-A-ISR?

SI8220DB-A-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI8220DB-A-ISR 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 SI8220DB-A-ISR?

For technical support, including SI8220DB-A-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8220DB-A-ISR requirements.

6.How does Aetrix verify that SI8220DB-A-ISR is sourced from the original manufacturer or authorized distributors?

All SI8220DB-A-ISR 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 SI8220DB-A-ISR meets industry standards.

7.What is the process for return or replacement of SI8220DB-A-ISR?

All SI8220DB-A-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8220DB-A-ISR, 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 SI8220DB-A-ISR part is unused and in its original packaging.

Return procedure for SI8220DB-A-ISR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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