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Skyworks Solutions Inc. SI8261BCC-C-IP
- Part No.:
- SI8261BCC-C-IP
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 8-SMD, Gull Wing
- Datasheet:
-
SI8261BCC-C-IP.pdf
- Description:
- DGT ISO 3.75KV 1CH GT DVR 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,212
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Product details
Overview
SI8261BCC-C-IP from Skyworks Solutions is a 5 kVRMS isolated gate driver with LED emulator input, delivering 4.0 A peak output current in SOIC-8 narrow-body package. It drives IGBTs and power MOSFETs in high-noise motor inverters and industrial power supplies, featuring rail-to-rail output, 60 ns propagation delay independent of input drive, and UVLO with 8 V threshold.
For engineers reviewing the SI8261BCC-C-IP datasheet, SI8261BCC-C-IP pinout, SI8261BCC-C-IP application, or SI8261BCC-C-IP equivalent, key selection criteria include its 4.0 A sink/source capability, 50 kV/µs CMTI, AEC-Q100 qualification, and drop-in compatibility with HCPL-3120/ACPL-3130 optocouplers in space-constrained SOIC-8 layouts.
Technical Context
The SI8261BCC-C-IP implements RF-based silicon isolation instead of optical coupling, enabling stable timing across temperature and lifetime. Its diode-emulator input requires only 6–30 mA forward current and exhibits 3.6 mA turn-on threshold with 0.34 mA hysteresis - eliminating LED aging drift while maintaining industry-standard anode/cathode interface logic.
Internally, it integrates noise filtering (15 ns pulse rejection), under-voltage lockout with 8.4 V rising threshold and 500 mV hysteresis, and dual VO pins that must be shorted to achieve full 4.0 A compliance. Output stage uses low-resistance drivers: 2.6 Ω typical source resistance and 0.8 Ω typical sink resistance at rated load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 5000 VRMS (UL1577), 10 kV surge (VDE0884-10) - enables reinforced insulation in 690 VAC industrial systems. |
| Output Drive Current | 4.0 A sink / 1.8 A source peak - supports fast switching of 600 V/30 A IGBTs without external buffers. |
| Propagation Delay | 20–60 ns (tPLH), 10–50 ns (tPHL) - tight unit-to-unit variation enables precise multi-channel timing in 3-phase inverters. |
| CMTI | ≥50 kV/µs typical - prevents false triggering during high dv/dt transients in SiC/GaN half-bridges. |
| UVLO Threshold | 8.4 V (rising), 7.9 V (falling) with 500 mV hysteresis - ensures clean startup/shutdown in 12 V gate-drive rails. |
| Supply Range | 6.5–30 V - compatible with both 12 V and 24 V isolated DC-DC supplies without level-shifting. |
| Operating Temp | –40 to +125 °C ambient - qualified for under-hood automotive and industrial motor control environments. |
Pinout & Package
SI8261BCC-C-IP is housed in an 8-pin narrow-body SOIC package (5.3 mm × 6.2 mm, 1.75 mm height) with creepage/clearance ≥3.9 mm / 4.7 mm per IEC60664-1. Pin 1 = ANODE, Pin 2 = CATHODE, Pin 3 = NC, Pin 4 = VDD, Pins 5 & 6 = VO (must be shorted externally), Pin 7 = GND, Pin 8 = UVLO.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ANODE) | Input anode terminal | Accepts 6–30 mA forward current; connects to MCU/FPGA I/O or open-drain driver; reverse voltage limited to 0.3 V. |
| 2 (CATHODE) | Input cathode terminal | Reference for input current path; tied to system ground or negative rail in floating input configurations. |
| 3 (NC) | No connect | Internally unconnected; must remain unpopulated or left floating - no external connection permitted. |
| 4 (VDD) | Primary supply input | Powers output stage; requires local 1 µF ceramic + 10 µF bulk decoupling; max 30 V absolute rating. |
| 5 & 6 (VO) | Output driver terminals | Parallel-connected high-current outputs; short externally to deliver full 4.0 A sink capability to gate node. |
| 7 (GND) | Output-side ground reference | Return path for output current; may be biased above/below system ground but must stay within VDD–GND ≤ 30 V. |
| 8 (UVLO) | UVLO enable/disable control | Active-low pin; pulled low disables output regardless of input state - used for system-level fault shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | VOL ≤ 200 mV at 100 mA sink; VOH ≥ VDD–0.25 V at 100 mA source - minimizes gate drive losses in high-frequency PWM. |
| LED emulator input | IF(TH) = 3.6 mA, VF(ON) = 1.6–2.8 V - replaces optocouplers without redesigning MCU interface or current-limiting resistors. |
| Propagation delay independence | tPLH/tPHL variation < ±10 ns across IF = 6–30 mA - eliminates timing skew when driving multiple parallel switches. |
| High CMTI immunity | 50 kV/µs typical - sustains reliable operation during 1500 V common-mode transients on gate driver outputs. |
| AEC-Q100 qualification | Grade 1 (–40 to +125 °C) - validated for automotive traction inverters, onboard chargers, and ADAS power stages. |
Applications
| Industrial Motor Inverter | Automotive Traction Inverter |
|---|---|
Use Scenario: Driving 650 V IGBT modules in 3-phase 22 kW HVAC compressors with 16 kHz PWM switching. IC Role / Device Role / Timing Role: Isolated high-side/low-side gate driver providing 4.0 A peak current to minimize Miller plateau time and reduce switching losses. Use Value: 50 kV/µs CMTI prevents shoot-through during bus transients; 60 ns propagation delay enables <100 ns dead-time control. |
Use Scenario: Controlling SiC MOSFET half-bridges in 800 V battery electric vehicle traction inverters. IC Role / Device Role / Timing Role: AEC-Q100-qualified isolated gate driver delivering fast, jitter-free turn-on/turn-off signals to high-speed power devices. Use Value: 5 kVRMS isolation meets ISO 26262 ASIL-B requirements; UVLO hysteresis prevents erratic behavior during 12 V rail droop. |
| Renewable Energy Solar Inverter | Industrial UPS Power Supply |
Use Scenario: Gate-driving 1200 V IGBTs in string inverters converting DC from photovoltaic arrays to grid-synchronized AC. IC Role / Device Role / Timing Role: Reinforced-isolation gate driver interfacing microcontroller PWM outputs to high-voltage power stage with galvanic separation. Use Value: VDE0884-10 certification supports 1414 Vpeak working voltage; SOIC-8 footprint allows compact PCB layout in constrained enclosures. |
Use Scenario: Driving MOSFETs in double-conversion online UPS systems requiring zero-transfer-time backup during mains failure. IC Role / Device Role / Timing Role: High-reliability isolated driver ensuring consistent gate timing across all phases during rapid load transients and brownouts. Use Value: 10x lower FIT rate vs. optocouplers extends mean time between failures; 14x tighter part-to-part matching improves phase current balance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8261BCD-C-IP | Same SOIC-8 package and 4.0 A drive, but UVLO threshold is 5 V (not 8 V); higher IF(TH) = 4.2 mA. | Better suited for 5 V logic-controlled systems; less margin against VDD droop in 12 V rails. | Select when interfacing directly with 5 V MCUs and lower UVLO trip is acceptable for system robustness. |
| ACPL-3130-000E | Optocoupler-based, 2.5 A output, 0.5 V higher VOL, 3× slower propagation (100 ns typ), no integrated UVLO. | Lacks AEC-Q100 qualification and CMTI >30 kV/µs; requires external UVLO circuitry and larger board area. | Consider only for legacy opto-replacement where cost sensitivity outweighs performance and reliability gains. |
Compared with Si8261BCD-C-IP, SI8261BCC-C-IP provides higher UVLO hysteresis for cleaner 12 V rail operation; versus ACPL-3130-000E, it delivers 1.6× higher peak current, 40% faster timing, and eliminates LED aging-related parameter drift over 15-year service life.
Availability
SI8261BCC-C-IP is available at Aetrix Electronics and suitable for industrial motor inverters, automotive traction systems, and renewable energy solar inverters requiring stable component supply with long-term lifecycle support.
Supply support for SI8261BCC-C-IP 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 high-reliability applications.
The Si826x product line was designed specifically to replace aging optocoupled gate drivers in high-noise, high-reliability power conversion systems - delivering superior CMTI, timing stability, and AEC-Q100-compliant robustness in standard SOIC packages.
FAQ
What is the maximum recommended input current for SI8261BCC-C-IP?
The absolute maximum average forward input current for SI8261BCC-C-IP is 30 mA per the datasheet's Absolute Maximum Ratings table. Continuous operation above this value risks thermal overstress and reduced long-term reliability. The device operates optimally at 6–20 mA, with 3.6 mA being the guaranteed turn-on threshold - allowing significant design margin for aging and temperature drift.
Does SI8261BCC-C-IP require external components for basic operation?
Yes - SI8261BCC-C-IP requires at minimum a 1 µF ceramic capacitor between VDD and GND placed adjacent to the package, plus a 10 µF bulk capacitor elsewhere on the rail. The VO pins must be shorted together externally to achieve rated 4.0 A sink current. No pull-up/pull-down resistors are needed on ANODE/CATHODE, and UVLO can be left open (internally pulled up) if not used for system fault control.
Can SI8261BCC-C-IP drive both IGBTs and SiC MOSFETs effectively?
Yes - SI8261BCC-C-IP is validated for both IGBT and SiC MOSFET gate driving. Its 4.0 A sink capability and 2.6 Ω source resistance enable sub-50 ns turn-off of 100 nC SiC gates, while its 50 kV/µs CMTI prevents false triggering during 5–10 V/ns dv/dt events typical in SiC half-bridges. Layout best practices (short traces, ground plane) are essential for optimal high-frequency performance.
How does the UVLO pin (Pin 8) function in SI8261BCC-C-IP?
Pin 8 (UVLO) is an active-low enable input: pulling it low forces VO to low state regardless of ANODE/CATHODE input or VDD level. When left unconnected, it is internally pulled up and inactive. This pin allows system-level fault interlocks - for example, connecting it to a microcontroller GPIO or hardware overcurrent comparator output to disable gate drive during critical faults without disrupting upstream logic.
Is SI8261BCC-C-IP pin-compatible with optocoupled alternatives like HCPL-3120?
Yes - SI8261BCC-C-IP uses industry-standard SOIC-8 pinout matching HCPL-3120, ACPL-3130, and HCNW3120. Pin 1 (ANODE) and Pin 2 (CATHODE) align directly; VO pins (5 & 6) map to output pins; VDD (4), GND (7), and NC (3) retain identical positions. No PCB redesign is required for drop-in replacement, though decoupling capacitor placement should follow Skyworks' layout guidelines for optimal EMI performance.
SI8261BCC-C-IP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 8-SMD, Gull Wing
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- Capacitive Coupling
- Number of Channels:
- 1
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 35kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 60ns, 50ns
- Pulse Width Distortion (Max):
- 28ns
- Rise / Fall Time (Typ):
- 5.5ns, 8.5ns
- Current - Output High, Low:
- 500mA, 1.2A
- Current - Peak Output:
- 4A
- Voltage - Forward (Vf) (Typ):
- 2.8V (Max)
- Current - DC Forward (If) (Max):
- 30 mA
- Voltage - Output Supply:
- 13.5V ~ 30V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DIP Gull Wing
- Approval Agency:
- CQC, CSA, UR, VDE
SI8261BCC-C-IP FAQ
1.How can I place an order for SI8261BCC-C-IP through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8261BCC-C-IP 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 SI8261BCC-C-IP reliable?
The price and inventory of SI8261BCC-C-IP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8261BCC-C-IP is usually 5 days.
3.What payment methods are accepted for SI8261BCC-C-IP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8261BCC-C-IP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8261BCC-C-IP?
SI8261BCC-C-IP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8261BCC-C-IP 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 SI8261BCC-C-IP?
For technical support, including SI8261BCC-C-IP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8261BCC-C-IP requirements.
6.How does Aetrix verify that SI8261BCC-C-IP is sourced from the original manufacturer or authorized distributors?
All SI8261BCC-C-IP 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 SI8261BCC-C-IP meets industry standards.
7.What is the process for return or replacement of SI8261BCC-C-IP?
All SI8261BCC-C-IP units undergo pre-shipment inspection (PSI). If there is an issue with SI8261BCC-C-IP, 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 SI8261BCC-C-IP part is unused and in its original packaging.
Return procedure for SI8261BCC-C-IP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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