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Skyworks Solutions Inc. SI83416BFA-IF
- Part No.:
- SI83416BFA-IF
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 32-VFDFN Exposed Pad
- Datasheet:
-
SI83416BFA-IF.pdf
- Description:
- 2 CH, ISOLATED SMART SWITCH, SOU
- Quantity:
- Payment:
- Shipping:
Inventory:2,134
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Product details
Overview
SI83416BFA-IF from Skyworks Solutions is a dual-channel isolated smart high-side switch IC designed for industrial load control in PLC and motion controller systems. It delivers 1.25 A continuous current per channel, features 1.5 kVRMS galvanic isolation, supports 9–32 V switch supply and 2.25–5.5 V logic supply, and integrates eight diagnostics accessible via SPI or open-drain indicator pins.
For engineers reviewing the SI83416BFA-IF datasheet, SI83416BFA-IF pinout, SI83416BFA-IF application, or SI83416BFA-IF equivalent, this device offers verified fault protection (overcurrent, overtemperature, undervoltage), fast 10 µs update rate, multi-voltage output clamp for unlimited EAS handling, and parallel/SPI interface flexibility for industrial I/O module design.
Technical Context
The SI83416BFA-IF implements two independent high-side switches with CMOS-based RF-isolation barrier, each monitored by dedicated voltage, current, and temperature sensors. Its bidirectional isolation channels separate control and diagnostic paths, enabling simultaneous switch actuation and real-time status reporting without interference.
Switch operation uses a smart multi-voltage output clamp to suppress inductive kickback while maintaining fast turn-OFF (<10 µs propagation delay). Diagnostics-including open-circuit detection, VDD2 warning, and communication error-are reported via SPI registers or active-low open-drain FLT/LED pins, with independent error checking per isolation channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 2 independent high-side switches with isolated control and sensing |
| Continuous Current | 1.25 A per channel at 25°C ambient, enabling direct drive of solenoids and relays |
| Isolation Rating | 1.5 kVRMS for 1 minute (UL 1577 recognized), supporting functional safety in industrial environments |
| Switch Supply Range | 9 V–32 V DC, compatible with standard 24 V industrial bus systems |
| Logic Supply Range | 2.25 V–5.5 V, interoperable with low-power MCUs including 3.3 V and 5 V controllers |
| Update Rate | 10 µs maximum propagation delay, ensuring deterministic timing for real-time I/O control |
| CMTI | >100 kV/µs common-mode transient immunity, preventing false triggering in noisy factory settings |
Pinout & Package
SI83416BFA-IF is housed in a compact 9 mm × 9 mm DFN-32 package with exposed thermal pad (EP), optimized for high-density industrial PCB layouts and thermal dissipation under sustained 1.25 A loads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Logic supply input | Powers digital interface (SPI/parallel); accepts 2.25–5.5 V; internal UVLO at ~2.05 V |
| VDD2 | Switch supply input | Powers high-side output stage; 9–32 V range; monitored for undervoltage warning (VDD2_WRN) |
| GND1 / GND2 | Logic / power ground | Galvanically isolated grounds separated by RF isolation barrier; must be routed on separate PCB planes |
| A1 / A2 | Parallel input control | Active-high logic inputs for direct channel enable; synchronous with OE pin |
| B1 / B2 | High-side switch outputs | Source-current outputs driving loads to GND2; RON = 78 mΩ typical at 25°C |
| OE | Output enable | Asynchronous global enable/disable; overrides individual A1/A2 signals when low |
| FLT | Fault indicator | Active-low open-drain output asserting on any detected fault (overcurrent, overtemp, VDD2 UV, etc.) |
| SCLK / MOSI / MISO / NSS | SPI interface | Full-duplex SPI port for reading diagnostics, configuring protection thresholds, and clearing faults |
| LED1 / LED2 | Channel status indicators | Active-low open-drain outputs reflecting real-time ON/OFF state of B1/B2 |
Key Features
| Feature | Design Value |
|---|---|
| Multi-voltage output clamp | Handles unlimited demagnetization energy (EAS) during inductive load turn-OFF, eliminating external snubbers |
| Inrush Current Mode | Not supported on SI83416BFA-IF (per Ordering Guide Table 1); fixed 1.25 A continuous rating |
| Dual-interface control | Parallel inputs (A1/A2 + OE) for deterministic timing + SPI for diagnostics-no initialization required at startup |
| Eight integrated diagnostics | Reports VDD2 warning, overcurrent, overtemperature, open-circuit, communication error, and supply faults via SPI or FLT pin |
| Galvanic RF isolation | CMOS-based isolation barrier replaces optocouplers; achieves >100 kV/µs CMTI and 1.5 kVRMS withstand without aging |
Applications
| Programmable Logic Controllers (PLC) | Industrial Motion Controllers |
|---|---|
Use Scenario: Digital output module in modular PLC rack driving 24 V solenoid valves and indicator lamps. IC Role / Device Role / Timing Role: Dual high-side switch providing isolated, protected load control with real-time fault feedback to PLC CPU via SPI. Use Value: Eliminates need for discrete optocouplers, MOSFETs, and protection diodes-reducing BOM count by ≥7 components per channel. | Use Scenario: Compact servo drive I/O interface controlling brake release coils and limit switch indicators. IC Role / Device Role / Timing Role: Isolated high-side driver delivering precise 1.25 A current with <10 µs response for synchronized motion sequencing. Use Value: Enables single-chip replacement of relay + driver + protection circuit, improving reliability and reducing PCB area by 40% vs. discrete solution. |
| Smart Solid-State Relays | Industrial Data Acquisition Systems |
Use Scenario: DIN-rail mounted SSR module switching 24 V DC loads in HVAC and process control panels. IC Role / Device Role / Timing Role: Dual-channel isolated switch with built-in diagnostics replacing electromechanical relays and external monitoring circuits. Use Value: Provides zero-crossing–free DC switching with open-circuit detection and lifetime >10⁹ cycles-no contact wear or arcing. | Use Scenario: Remote I/O node in distributed control system acquiring sensor status and actuating field devices. IC Role / Device Role / Timing Role: Isolated output driver interfacing microcontroller to 24 V field wiring, with SPI-reported diagnostics for predictive maintenance. Use Value: Delivers full fault visibility (VDD2 UV, overtemp, open-load) over same 4-wire SPI bus used for configuration-no extra signal lines needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side isolated switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI83416BDA-IF | SPI-only interface (no parallel A1/A2 inputs); identical 2-channel, 1.25 A, high-side architecture and package | Requires full SPI control stack; lacks direct GPIO-style switching via A1/A2 + OE | Select when diagnostics and configuration dominate over deterministic parallel control timing |
| SI83412BAA-IF | 2-channel high-side switch with same 1.25 A rating and parallel interface, but no SPI diagnostics-only FLT and LED indicators | Limited to basic fault signaling; no register-level access to VDD2 warning, open-circuit, or communication errors | Select for cost-sensitive designs where only global fault indication is required, not granular diagnostics |
Compared with SI83416BFA-IF, SI83416BDA-IF trades parallel control for deeper SPI configurability, while SI83412BAA-IF reduces diagnostic capability to lower system complexity and cost-making SI83416BFA-IF the balanced choice for applications needing both deterministic switching and comprehensive diagnostics.
Availability
SI83416BFA-IF is available at Aetrix Electronics and suitable for programmable logic controllers, industrial motion controllers, and smart solid-state relays requiring stable component supply, long-term industrial lifecycle support, and guaranteed traceable sourcing.
Supply support for SI83416BFA-IF 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 Si834x product line was engineered specifically for industrial automation I/O modules, combining galvanic isolation, robust fault protection, and dual-control interfaces to replace legacy optocoupler-plus-driver architectures in PLC and motion control systems.
FAQ
What is the maximum continuous output current per channel for SI83416BFA-IF?
The SI83416BFA-IF delivers 1.25 A continuous current per channel at 25°C ambient temperature, with RON of 78 mΩ typical. Derating applies above 25°C per the thermal characteristics in the datasheet; at 105°C ambient, the rated current drops to approximately 0.9 A per channel with proper PCB copper pour and thermal vias.
Does SI83416BFA-IF support inrush current mode for lamp loads?
No, SI83416BFA-IF does not support inrush current mode. Per Skyworks' Ordering Guide (Table 1), only variants ending in "AAA", "ADA", or "AFA" include this feature. SI83416BFA-IF is rated for 1.25 A continuous operation without temporary overcurrent capability.
What isolation certifications apply to SI83416BFA-IF?
SI83416BFA-IF carries UL 1577 recognition for 1500 Vrms isolation for 1 minute, CSA certification to IEC 62368-1, and CQC approval to GB4943.1. It also meets IEC 61131-2 for industrial programmable controllers and provides >100 kV/µs common-mode transient immunity.
Can SI83416BFA-IF be used as a low-side switch?
No, SI83416BFA-IF is configured exclusively as a high-side switch. The Si834x family includes sinking (low-side) variants such as SI83411xxx and SI83414xxx, but SI83416BFA-IF's internal architecture and pinout (B1/B2 as source outputs) are fixed for high-side operation.
How are diagnostics accessed on SI83416BFA-IF?
Diagnostics on SI83416BFA-IF are accessible via two independent paths: (1) eight distinct fault/status reports read from SPI registers (e.g., VDD2_WRN, OPEN_CH, OVER_TEMP), and (2) hardware indicator pins-FLT (global fault), LED1/LED2 (per-channel status)-all implemented as active-low open-drain outputs.
SI83416BFA-IF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si834x
- Package/Case:
- 32-VFDFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/0
- Channel Type:
- Bidirectional, Unidirectional
- Voltage - Isolation:
- 1500Vrms
- Common Mode Transient Immunity (Min):
- 100kV/µs
- Data Rate:
- -
- Propagation Delay tpLH / tpHL (Max):
- 3.7µs, 3.7µs
- Pulse Width Distortion (Max):
- -
- Rise / Fall Time (Typ):
- -, 3µs
- Voltage - Supply:
- 2.25V ~ 5.5V, 9V ~ 32V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-DFN (9x9)
SI83416BFA-IF FAQ
1.How can I place an order for SI83416BFA-IF through Aetrix?
Please submit a Request for Quotation (RFQ) for SI83416BFA-IF 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 SI83416BFA-IF reliable?
The price and inventory of SI83416BFA-IF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI83416BFA-IF is usually 5 days.
3.What payment methods are accepted for SI83416BFA-IF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI83416BFA-IF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI83416BFA-IF?
SI83416BFA-IF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI83416BFA-IF 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 SI83416BFA-IF?
For technical support, including SI83416BFA-IF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI83416BFA-IF requirements.
6.How does Aetrix verify that SI83416BFA-IF is sourced from the original manufacturer or authorized distributors?
All SI83416BFA-IF 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 SI83416BFA-IF meets industry standards.
7.What is the process for return or replacement of SI83416BFA-IF?
All SI83416BFA-IF units undergo pre-shipment inspection (PSI). If there is an issue with SI83416BFA-IF, 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 SI83416BFA-IF part is unused and in its original packaging.
Return procedure for SI83416BFA-IF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI83416BFA-IF 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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