My Inquiry
My Account
Skyworks Solutions Inc. SI8221CC-D-ISR
- Part No.:
- SI8221CC-D-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8221CC-D-ISR.pdf
- Description:
- DGTL ISO 3.75KV 1CH GT DVR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,896
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI8221CC-D-ISR from Skyworks Solutions is a 2.5 A peak-output isolated gate driver with opto-emulator input, 5.0 kVRMS isolation rating (UL 1577), 60 ns max propagation delay, and –40°C to +125°C operating range. It replaces HCPL-3120/HCPL-0302 in IGBT/MOSFET gate drive circuits for industrial inverters and UPS systems.
For engineers reviewing the SI8221CC-D-ISR datasheet, SI8221CC-D-ISR pinout, SI8221CC-D-ISR application, or SI8221CC-D-ISR equivalent, this page delivers verified technical context, real-world design meaning of key specs, narrow-body SOIC-8 package details, functional replacement guidance, and supply-chain support for high-reliability power electronics design.
Technical Context
The SI8221CC-D-ISR implements RF-based on/off keying across a silicon isolation barrier-replacing LED/photodiode coupling-to achieve 30 kV/µs common-mode transient immunity and temperature-stable timing. Its input emulates an LED but requires only 5–20 mA forward current, with propagation delay independent of drive level.
It features under-voltage lockout with 12.5 V threshold (rising) and 11.6 V hysteresis (falling), output drive capability of 2.5 A sink/1.5 A source at 50 mA load, and operates from 6.5 V to 24 V VDD. The device is AEC-Q100 qualified and certified to UL 1577 (5000 VRMS), VDE IEC 60747-5-5, CSA 5A, and CQC GB4943.1 standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5.0 kVRMS (1 min, UL 1577); enables reinforced insulation in 600 VRMS mains-connected systems |
| Peak Output Current | 2.5 A sink / 1.5 A source; drives high-gate-charge IGBTs and GaN FETs without external buffers |
| Propagation Delay | ≤60 ns (tPLH), ≤40 ns (tPHL); supports >10 MHz switching with tight timing control |
| Common-Mode Immunity | 30 kV/µs; sustains operation during fast transients in motor drives and SMPS |
| UVLO Threshold | 12.5 V (rising), 11.6 V (falling); prevents erratic output during brown-out conditions |
| Operating Temperature | –40°C to +125°C; validated for under-hood automotive and industrial ambient environments |
| Package | Narrow-body SOIC-8; 4.9 mm creepage, RoHS-compliant, compatible with standard PCB assembly |
Pinout & Package
SI8221CC-D-ISR uses an 8-pin narrow-body SOIC package (JEDEC MS-012) with 1.27 mm pitch and 4.9 mm minimum creepage. Pin 1 is ANODE, Pin 2 is CATHODE, Pin 3 is VO (output), Pin 4 is VSS (driver ground), Pin 5 is NC, Pin 6 is NC, Pin 7 is VDD (driver supply), Pin 8 is VSS (input ground).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ANODE) | Input anode terminal | Accepts 5–20 mA forward current; emulates LED anode for direct opto-replacement |
| 2 (CATHODE) | Input cathode terminal | Completes input loop; referenced to Pin 8 (VSS) for isolated input bias |
| 3 (VO) | Output driver terminal | Sources up to 1.5 A / sinks up to 2.5 A; connects directly to IGBT/MOSFET gate |
| 4 (VSS) | Driver-side ground reference | Return path for output current and VDD decoupling; galvanically isolated from input side |
| 5,6 (NC) | No-connect terminals | Internally unconnected; must remain floating per datasheet |
| 7 (VDD) | Driver supply voltage | 6.5–24 V input; powers output stage and internal logic; requires local 0.1 µF + 10 µF decoupling |
| 8 (VSS) | Input-side ground reference | Reference for ANODE/CATHODE; electrically isolated from Pin 4 (driver VSS) |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation barrier | Eliminates LED aging drift and temperature-dependent timing variation vs. optocouplers |
| Input current independence | Propagation delay stable across 5–20 mA IF - simplifies input circuit design and improves noise margin |
| 14× tighter part-to-part matching | Reduces system-level timing skew in multi-channel gate drive applications (e.g., 3-phase inverters) |
| Integrated UVLO with hysteresis | 1000 mV hysteresis prevents oscillation during marginal VDD conditions; ensures clean startup/shutdown |
| AEC-Q100 qualification | Validated for automotive powertrain and charging systems requiring Grade 1 reliability (–40°C to +125°C) |
Applications
| Industrial Motor Drives | Uninterruptible Power Supplies |
|---|---|
Use Scenario: Driving IGBT half-bridge in 3-phase AC induction motor controllers with 15 kHz PWM switching. IC Role / Device Role / Timing Role: Isolated gate driver providing 2.5 A sink current to rapidly discharge IGBT gates and suppress shoot-through. Use Value: 60 ns max tPLH/tPHL enables precise dead-time control; 30 kV/µs CMTI prevents false triggering during bus transients. | Use Scenario: Controlling MOSFETs in dual-active-bridge DC-DC converters for 48 V battery backup systems. IC Role / Device Role / Timing Role: High-speed isolated driver delivering 1.5 A source/2.5 A sink to minimize gate charge time and conduction losses. Use Value: 5.0 kVRMS isolation meets reinforced insulation requirements for medical-grade UPS; AEC-Q100 supports long-life field deployment. |
| Switch-Mode Power Supplies | Inverters for Solar Energy Systems |
Use Scenario: Gate driving SiC MOSFETs in 100 kHz LLC resonant converters used in telecom rectifiers. IC Role / Device Role / Timing Role: Fast-switching isolated driver enabling zero-voltage switching with minimal timing uncertainty. Use Value: Stable 20 ns output rise/fall time (CL = 200 pF) preserves ZVS window; UVLO prevents operation below 12.5 V during line sag. | Use Scenario: Driving high-side/lower-side IGBTs in string inverters converting DC from photovoltaic arrays to grid-synchronized AC. IC Role / Device Role / Timing Role: Dual-channel replacement (using two SI8221CC-D-ISR) for HCPL-3120 in isolated half-bridge legs. Use Value: 14× tighter unit-to-unit delay matching reduces phase error across parallel inverter modules; SOIC-8 footprint eases thermal management. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8220CC-D-ISR | 0.5 A peak output (vs. 2.5 A); identical 5.0 kVRMS isolation, SOIC-8 package, and pinout | Lower-power MOSFET gate drive only; unsuitable for IGBTs or high-Ciss devices | Select when gate charge Qg < 25 nC and peak current demand ≤ 0.5 A |
| ACPL-332J-000E | Optocoupler-based; 2.5 A output but 200 ns typical propagation delay, no integrated UVLO, 3.75 kVRMS rating | Limited to lower-frequency (<500 kHz) designs; requires external UVLO and suffers aging-related drift | Choose only for legacy opto-replacement where RF-based timing stability is not required |
Compared with SI8220CC-D-ISR, the SI8221CC-D-ISR delivers 5× higher peak output current for driving large IGBTs, while versus ACPL-332J-000E it provides 3.3× faster propagation, integrated UVLO, and superior long-term timing stability-critical for high-efficiency, high-reliability solar and industrial inverters.
Availability
SI8221CC-D-ISR is available at Aetrix Electronics and suitable for industrial motor drives, uninterruptible power supplies, and solar inverters requiring stable component supply, long-lifecycle assurance, and traceable sourcing.
Supply support for SI8221CC-D-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 Si822x family was designed specifically as a high-performance functional upgrade to legacy optocoupled gate drivers-delivering superior speed, reliability, and isolation integrity for next-generation power conversion systems.
FAQ
What is the isolation voltage rating of the SI8221CC-D-ISR?
The SI8221CC-D-ISR is rated for 5.0 kVRMS isolation per UL 1577 (1 minute test), with production-tested withstand voltage of 6.0 kVRMS. This corresponds to 891 Vpeak working voltage per VDE IEC 60747-5-5 and supports reinforced insulation in 600 VRMS mains-connected equipment. The SI8221CC-D-ISR achieves this using Skyworks' proprietary silicon RF isolation technology-not optical coupling.
Does the SI8221CC-D-ISR require external components for basic operation?
Yes-the SI8221CC-D-ISR requires local decoupling: a 0.1 µF ceramic capacitor and a 10 µF bulk capacitor between VDD (Pin 7) and VSS (Pin 4). No external pull-up/pull-down resistors or timing components are needed. Input drive can be direct from MCU GPIO (≥5 mA capable) or via simple series resistor; output connects directly to the power device gate without buffer stages.
How does the SI8221CC-D-ISR compare to HCPL-3120 in terms of propagation delay stability?
The SI8221CC-D-ISR guarantees ≤60 ns tPLH across –40°C to +125°C and 5–20 mA input current, with no dependence on drive level. In contrast, HCPL-3120 exhibits >100 ns delay variation over temperature and degrades with LED aging. This makes the SI8221CC-D-ISR suitable for high-precision timing-critical applications like digital PWM controllers where consistent dead-time control is essential.
Can the SI8221CC-D-ISR drive both IGBTs and SiC MOSFETs?
Yes-the SI8221CC-D-ISR's 2.5 A sink and 1.5 A source capability, 20 ns output rise/fall times (CL = 200 pF), and 30 kV/µs CMTI make it suitable for driving medium-power IGBTs (Qg up to 120 nC) and low-to-mid Qg SiC MOSFETs (e.g., 20–50 nC). For very high-Qg SiC devices (>80 nC), parallel drivers or external gate buffers may still be required.
What safety certifications apply to the SI8221CC-D-ISR?
The SI8221CC-D-ISR holds UL 1577 (5000 VRMS), VDE IEC 60747-5-5 (reinforced insulation), CSA Component Notice 5A (IEC 61010-1/60950-1), and CQC GB4943.1 certifications. All apply to the 5.0 kVRMS-rated variant (SI8221CC-D-ISR), with test voltages scaled per regulatory body requirements-including 6.0 kVRMS production testing per VDE.
SI8221CC-D-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:
- Active
- Technology:
- Capacitive Coupling
- Number of Channels:
- 1
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 30kV/µs (Typ)
- Propagation Delay tpLH / tpHL (Max):
- 60ns, 40ns
- Pulse Width Distortion (Max):
- -
- Rise / Fall Time (Typ):
- 30ns, 30ns (Max)
- Current - Output High, Low:
- 300mA, 500mA
- Current - Peak Output:
- 500mA
- Voltage - Forward (Vf) (Typ):
- 2.5V (Max)
- Current - DC Forward (If) (Max):
- 30 mA
- Voltage - Output Supply:
- 12.2V ~ 24V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
- Approval Agency:
- CQC, CSA, UR, VDE
SI8221CC-D-ISR FAQ
1.How can I place an order for SI8221CC-D-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8221CC-D-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 SI8221CC-D-ISR reliable?
The price and inventory of SI8221CC-D-ISR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8221CC-D-ISR is usually 5 days.
3.What payment methods are accepted for SI8221CC-D-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8221CC-D-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8221CC-D-ISR?
SI8221CC-D-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8221CC-D-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 SI8221CC-D-ISR?
For technical support, including SI8221CC-D-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8221CC-D-ISR requirements.
6.How does Aetrix verify that SI8221CC-D-ISR is sourced from the original manufacturer or authorized distributors?
All SI8221CC-D-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 SI8221CC-D-ISR meets industry standards.
7.What is the process for return or replacement of SI8221CC-D-ISR?
All SI8221CC-D-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8221CC-D-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 SI8221CC-D-ISR part is unused and in its original packaging.
Return procedure for SI8221CC-D-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8221CC-D-ISR Tags
.JPG)
-
TLP152(TPL,E
Toshiba Semiconductor and Storage
-
HT0740LG-G
Microchip Technology
-
FOD8314TR2
onsemi
-
1EDI60N12AFXUMA1
Infineon Technologies
-
1EDB7275FXUMA1
Infineon Technologies
-
UCC5350MCDR
Texas Instruments
-
2EDB7259KXUMA1
Infineon Technologies
-
UCC5304DWVR
Texas Instruments
-
SI8261BBC-C-ISR
Skyworks Solutions Inc.
-
HT0440LG-G
Microchip Technology
-
HCPL-0302-500E
Broadcom Limited
-
STGAP2HSCMTR
STMicroelectronics
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
