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Skyworks Solutions Inc. SI83415BFA-IFR
- Part No.:
- SI83415BFA-IFR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 32-VFDFN Exposed Pad
- Datasheet:
-
SI83415BFA-IFR.pdf
- Description:
- 1 CH, ISOLATED SMART SWITCH, SOU
- Quantity:
- Payment:
- Shipping:
Inventory:3,228
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Product details
Overview
SI83415BFA-IFR from Skyworks Solutions is a single-channel isolated smart high-side switch with 1.5 kVRMS safety-rated galvanic isolation, 2.5 A continuous output current (RON = 41 mΩ), 9–32 V switch supply range, and Parallel/SPI dual-interface control. It integrates overcurrent, overtemperature, undervoltage, and open-circuit protection for industrial load switching in PLC I/O modules.
For engineers reviewing the SI83415BFA-IFR datasheet, SI83415BFA-IFR pinout, SI83415BFA-IFR application, or SI83415BFA-IFR equivalent, key selection considerations include its 2.5 A sourcing capability, 10 µs update rate, SPI-configurable diagnostics, multi-voltage clamp for unlimited EAS handling, and compact 9×9 mm DFN-32 package with 100 kV/µs CMTI.
Technical Context
The SI83415BFA-IFR implements a CMOS-based RF-isolated architecture with dedicated bidirectional isolation channels between logic and power domains. Its high-side switch uses a smart multi-voltage output clamp to suppress inductive kickback while enabling fast demagnetization - critical for relay and solenoid driving.
Control is supported via parallel input pins plus SPI interface for full diagnostic access (8 fault types), independent of channel switching. The device features asynchronous output enable (OE), fault indicator (FLT), and supports inrush current mode (8 A/20 ms) only on select variants - not enabled in SI83415BFA-IFR per ordering guide.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | Single-channel high-side sourcing switch with galvanic isolation barrier |
| Continuous Current | 2.5 A at 25°C ambient; enables direct drive of industrial solenoids and lamps without external boost |
| RON | 41 mΩ typical; minimizes conduction loss and self-heating under full load |
| Isolation Rating | 1.5 kVRMS for 1 minute (UL 1577 pending); meets CSA 62368-1 and GB4943.1 safety requirements |
| Supply Ranges | VDD1 logic: 2.25–5.5 V; VDD2 switch: 9–32 V - compatible with 24 V industrial rails and low-power MCUs |
| CMTI | >100 kV/µs - ensures robust operation in noisy factory environments with fast transients |
| Operating Temp | −40°C to +125°C ambient - qualified for extended industrial temperature operation |
Pinout & Package
SI83415BFA-IFR is housed in a compact 9×9 mm, 32-pin DFN package with exposed thermal pad (EP). Pin assignment follows Skyworks Si834x standard layout for 1-channel Parallel/SPI variants, with dedicated isolation barrier separation between logic and power domains.
| 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 |
| OE | Asynchronous output enable | Active-high global enable; forces all outputs OFF when low - used for emergency shutdown |
| GND1 | Logic ground reference | Reference for VDD1 and digital signals; isolated from GND2 by CMOS barrier |
| A1 | Parallel input channel 1 | Direct logic-level control input for channel; high = ON, low = OFF (no pull-up required) |
| B1 | High-side switch output | Sourcing output terminal; connects to load anode; rated for 2.5 A continuous, 8 A inrush (not enabled) |
| VDD2 | Switch supply input | Powers output stage; 9–32 V range supports 24 V industrial systems; UVLO at ~8.5 V |
| GND2 | Power ground reference | Return path for VDD2 and B1 load current; isolated from GND1 |
| FLT | Fault indicator output | Active-low open-drain signal asserting any detected fault (overtemp, overcurrent, UV, etc.) |
| MOSI, MISO, SCLK, NSS | SPI interface signals | Full-duplex SPI for reading diagnostics, configuring protection thresholds, and controlling SW_EN register |
| DNC / NC | No-connect / no-function | Reserved or unused pins; must be left floating or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Galvanic RF isolation | CMOS-based barrier replaces optocouplers; eliminates LED aging, improves CMTI (>100 kV/µs), and enables 1.5 kVRMS rating |
| Smart multi-voltage clamp | Handles unlimited demagnetization energy (EAS) during inductive turn-off - prevents voltage spikes and contact arcing |
| Eight integrated diagnostics | Reports overcurrent, overtemperature, open-circuit, VDD1/VDD2 UV, communication errors, and more via SPI status registers |
| Dual-control interface | Parallel inputs (A1) for real-time switching + SPI (MOSI/MISO/SCLK/NSS) for configuration and monitoring - no conflict between paths |
| Robust protection suite | Includes current-limited overload, thermal shutdown, VDD1/VDD2 undervoltage lockout, and fault latching with configurable clear |
Applications
| PLC Digital Output Module | Industrial Motion Controller |
|---|---|
Use Scenario: Replacing mechanical relays or discrete MOSFET+opto solutions in 24 V DC output cards for programmable logic controllers. IC Role / Device Role / Timing Role: High-side switch providing isolated, protected, and monitored 24 V sourcing to field devices like valves and indicators. Use Value: Eliminates relay wear-out and optocoupler drift; 2.5 A rating drives multiple solenoids per channel; 10 µs update enables fast sequence control. |
Use Scenario: Driving stepper motor hold coils, brake solenoids, or positioner actuators in servo-driven motion systems. IC Role / Device Role / Timing Role: Isolated high-side driver with precise current limiting and thermal monitoring for safety-critical actuation. Use Value: Smart clamp prevents back-EMF damage during rapid direction changes; diagnostics feed into motion controller's safety logic. |
| Smart Solid-State Relay | Industrial Data Acquisition I/O |
Use Scenario: Building compact, DIN-rail mountable SSRs with embedded diagnostics for OEM panel builders. IC Role / Device Role / Timing Role: Core switching element with integrated isolation, protection, and SPI-accessible health reporting. Use Value: Reduces BOM count vs. discrete isolation + MOSFET + sense + protection; 9×9 mm DFN enables high-density packaging. |
Use Scenario: Modular analog/digital I/O expansion for edge gateways collecting sensor and actuator data in Industry 4.0 systems. IC Role / Device Role / Timing Role: Digitally controlled, fault-aware output stage interfacing microcontroller to field loads. Use Value: SPI diagnostics provide predictive maintenance data (e.g., rising RON, repeated overtemp events); supports remote firmware updates. |
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 |
|---|---|---|---|
| SI83405BDA-IFR | SPI-only interface (no parallel A1 pin); same 1-channel, 2.5 A, 41 mΩ, 9–32 V specs | Lacks direct parallel control - requires MCU SPI management for all switching; no OE pin | Choose SI83405BDA-IFR when SPI-only control suffices and board space allows removal of OE/A1 routing |
| SI83415BAA-IFR | Parallel-only interface (no SPI pins); identical pinout except MOSI/MISO/SCLK/NSS replaced with NC/DNC | Provides basic ON/OFF control and FLT indication only - no diagnostics, configuration, or status registers | Choose SI83415BAA-IFR for cost-sensitive, non-diagnostic applications where SPI is unnecessary |
Compared with SI83405BDA-IFR and SI83415BAA-IFR, SI83415BFA-IFR uniquely delivers both real-time parallel control and full SPI diagnostics in one package - enabling flexible system architecture without sacrificing observability or safety compliance.
Availability
SI83415BFA-IFR is available at Aetrix Electronics and suitable for industrial programmable logic controllers, motion controllers, and smart solid-state relays requiring stable component supply, long-term lifecycle support, and certified isolation performance.
Supply support for SI83415BFA-IFR 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 Si834x family was designed specifically for industrial automation applications demanding high reliability, safety-certified isolation, and intelligent load protection - targeting replacement of legacy optocoupler-plus-MOSFET designs.
FAQ
What is the maximum continuous output current of the SI83415BFA-IFR?
The SI83415BFA-IFR delivers up to 2.5 A continuous sourcing current at 25°C ambient, with RON of 41 mΩ typical. Derating applies above 25°C per the thermal characteristics in the datasheet; at 125°C junction, output current is limited to ~1.3 A to maintain safe operating area. This rating enables direct drive of industrial solenoids, lamps, and small motors without external current boosting.
Does the SI83415BFA-IFR support inrush current mode for lamp driving?
No, the SI83415BFA-IFR does not support inrush current mode. Per Skyworks' Si834x Ordering Guide (Table 1), inrush mode (8 A for 20 ms) is only enabled on part numbers ending in "AAA", "ADA", or "AFA" - such as SI83414AAA-IFR. SI83415BFA-IFR is configured for standard 2.5 A continuous operation without enhanced inrush capability.
What isolation certifications apply to the SI83415BFA-IFR?
The SI83415BFA-IFR carries pending UL 1577 recognition (1500 VRMS/1 min), CSA certification under 62368-1, and CQC approval to GB4943.1. Its 1.5 kVRMS isolation rating and >100 kV/µs CMTI meet stringent industrial safety and noise immunity requirements, making it suitable for use in reinforced insulation applications per IEC 61131-2.
Can the SI83415BFA-IFR be used as a low-side switch?
No, the SI83415BFA-IFR is a high-side sourcing switch only. The Si834x family includes low-side variants (e.g., SI83411xxx), but SI83415BFA-IFR is explicitly designated as a sourcing (high-side) device in the ordering guide and system diagrams. Its B1 pin is designed to source current from VDD2 to the load anode - not sink from load cathode to GND2.
How many diagnostic reports does the SI83415BFA-IFR provide, and how are they accessed?
The SI83415BFA-IFR provides eight distinct diagnostic reports - including overcurrent, overtemperature, open-circuit, VDD1/VDD2 undervoltage, communication error, and more. All diagnostics are accessible exclusively via the SPI interface through dedicated status registers; no diagnostics are exposed on GPIO pins in this variant, unlike versions with LEDn outputs.
SI83415BFA-IFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si834x
- Package/Case:
- 32-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 1
- Inputs - Side 1/Side 2:
- 1/0
- 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)
SI83415BFA-IFR FAQ
1.How can I place an order for SI83415BFA-IFR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI83415BFA-IFR 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 SI83415BFA-IFR reliable?
The price and inventory of SI83415BFA-IFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI83415BFA-IFR is usually 5 days.
3.What payment methods are accepted for SI83415BFA-IFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI83415BFA-IFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI83415BFA-IFR?
SI83415BFA-IFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI83415BFA-IFR 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 SI83415BFA-IFR?
For technical support, including SI83415BFA-IFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI83415BFA-IFR requirements.
6.How does Aetrix verify that SI83415BFA-IFR is sourced from the original manufacturer or authorized distributors?
All SI83415BFA-IFR 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 SI83415BFA-IFR meets industry standards.
7.What is the process for return or replacement of SI83415BFA-IFR?
All SI83415BFA-IFR units undergo pre-shipment inspection (PSI). If there is an issue with SI83415BFA-IFR, 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 SI83415BFA-IFR part is unused and in its original packaging.
Return procedure for SI83415BFA-IFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI83415BFA-IFR 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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