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Skyworks Solutions Inc. SI83415BDA-IFR
- Part No.:
- SI83415BDA-IFR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 32-VFDFN Exposed Pad
- Datasheet:
-
SI83415BDA-IFR.pdf
- Description:
- 1 CH, ISOLATED SMART SWITCH, SIN
- Quantity:
- Payment:
- Shipping:
Inventory:2,091
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Product details
Overview
SI83415BDA-IFR from Skyworks Solutions is a single-channel isolated high-side smart switch IC with 1.5 kVRMS safety-rated galvanic isolation, 2.5 A continuous output current (RON = 41 mΩ), SPI interface for diagnostics, and 9 V–32 V switch supply voltage. It drives industrial inductive/resistive loads such as solenoids and relays in PLC I/O modules while providing full fault protection including overcurrent, overtemperature, and undervoltage monitoring.
For engineers reviewing the SI83415BDA-IFR datasheet, SI83415BDA-IFR pinout, SI83415BDA-IFR application, or SI83415BDA-IFR equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative parts with documented differences, and application-specific implementation guidance for industrial control systems.
Technical Context
The SI83415BDA-IFR implements a single high-side switch controlled exclusively via SPI - no parallel input pins - using RF-based CMOS isolation with >100 kV/µs CMTI. Its analog power domain (VDD2) supplies the switch output, while digital logic (VDD1) operates at 2.25 V–5.5 V, enabling direct interfacing with low-voltage MCUs.
Diagnostic reporting is fully SPI-accessible across eight registers, covering open-circuit detection, overcurrent, overtemperature, VDD2 undervoltage warning, communication errors, and channel status. Fault response is configurable via SPI, and the FLT pin provides active-low, open-drain global fault indication independent of SPI activity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | Single-channel high-side sourcing switch with integrated driver and protection |
| Continuous Output Current | 2.5 A - supports driving solenoids, valves, and small relays without external heatsinking at 125°C ambient |
| ON-State Resistance (RON) | 41 mΩ - minimizes conduction loss and self-heating under full load |
| Isolation Rating | 1.5 kVRMS - certified to UL 1577, CSA 62368-1, and GB4943.1 for functional safety in industrial environments |
| Switch Supply Range | 9 V–32 V - compatible with standard 24 V DC industrial bus rails and brownout-tolerant down to 9 V |
| Logic Supply Range | 2.25 V–5.5 V - interfaces directly with 3.3 V or 5 V microcontrollers without level-shifting |
| Interface Protocol | SPI-only - no parallel inputs; all control and diagnostics accessed via MOSI/MISO/SCLK/NSS |
| Operating Temperature | −40 °C to +125 °C - qualified for extended temperature operation in harsh industrial enclosures |
Pinout & Package
SI83415BDA-IFR 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 in sealed enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Digital logic supply | Powers internal SPI controller and isolation transmitter; accepts 2.25–5.5 V |
| VDD2 | Analog switch supply | Provides power to high-side output stage; 9–32 V range enables direct connection to 24 V industrial rail |
| GND1 | Digital ground | Reference for logic interface and SPI signals; must be separated from GND2 for isolation integrity |
| GND2 | Analog ground | Reference for switch output and protection circuitry; galvanically isolated from GND1 |
| MOSI | SPI data input | Serial command input for register writes (e.g., SW_EN, configuration, fault clear) |
| MISO | SPI data output | Serial readback of status/diagnostic registers (e.g., FAULT, OPEN_CH, TEMP_WARN) |
| SCLK | SPI clock | Master-generated clock up to 10 MHz; timing-critical for diagnostic polling latency |
| NSS | SPI slave select | Active-low chip enable; required to initiate any SPI transaction |
| B1 | High-side output | Single-channel sourcing output capable of 2.5 A continuous; connects to load anode |
| FLT | Fault indicator | Active-low open-drain output asserting when any diagnostic fault is latched (e.g., overtemp, overcurrent) |
| EP | Exposed thermal pad | Internally connected to GND2; must be soldered to PCB copper pour for thermal management |
Key Features
| Feature | Design Value |
|---|---|
| SPI-only control architecture | Eliminates need for parallel GPIO lines; reduces MCU pin count and simplifies routing in space-constrained PLC modules |
| Smart multi-voltage output clamp | Handles unlimited demagnetization energy (EAS) during inductive turn-off, preventing voltage spikes >60 V and enabling fast, arc-free relay switching |
| Inrush current mode | Not supported on SI83415BDA-IFR - differs from AAA/ADA variants; designed for steady-state loads rather than cold-filament lamps |
| Eight diagnostic reports | Includes open-circuit detection, overcurrent, overtemperature, VDD2 undervoltage, communication error, and channel status - all accessible via SPI without additional pins |
| Galvanic RF isolation | CMOS-based barrier with >100 kV/µs CMTI ensures reliable operation in noisy factory environments with fast-switching VFDs or motor drives |
| IEC 61131-2 compliance | Meets industrial programmable controller input/output standards for surge, ESD, and fast transient immunity |
Applications
| Programmable Logic Controller (PLC) Digital Output Module | Industrial Motion Controller I/O Expansion |
|---|---|
Use Scenario: Replacing electromechanical relays or optocoupler+MOSFET discrete solutions in 24 V DC output cards for discrete actuator control. IC Role / Device Role / Timing Role: High-side smart switch providing isolated, protected, and diagnosable 24 V sourcing to solenoid valves, pneumatic actuators, and indicator lamps. Use Value: Enables predictive maintenance via open-circuit detection and eliminates field failures from undetected open loads or thermal runaway. | Use Scenario: Adding isolated, current-limited outputs to servo drive auxiliary I/O for brake release, cooling fan control, or limit switch feedback conditioning. IC Role / Device Role / Timing Role: Single-channel high-side driver with SPI-configurable fault thresholds and fast 10 µs update rate for synchronized motion sequencing. Use Value: Reduces system-level validation effort by integrating isolation, protection, and diagnostics into one component compliant with IEC 61131-2. |
| Smart Solid-State Relay (SSR) for Industrial Automation | Condition Monitoring Data Acquisition Node |
Use Scenario: Building compact, DIN-rail mountable SSRs with embedded health monitoring for HVAC dampers, conveyor starters, or packaging machine clutches. IC Role / Device Role / Timing Role: Isolated high-side switch with built-in overtemperature and overcurrent sensing, eliminating need for external sense resistors or thermistors. Use Value: Lowers BOM cost and board area vs. discrete solutions while delivering real-time fault logging via SPI to edge gateway. | Use Scenario: Integrating isolated digital outputs into modular sensor nodes that report equipment status (e.g., "valve open", "motor running") alongside analog measurements. IC Role / Device Role / Timing Role: Diagnostics-enabled output driver feeding status LEDs or pilot lights, with fault reporting fed back to local microcontroller over shared SPI bus. Use Value: Enables consolidated health reporting - e.g., detecting open-circuit wiring faults before deployment - improving field reliability and reducing service calls. |
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-IF | No SPI interface; parallel control only (A1/OE); no diagnostics reporting | Limited to simple on/off control without fault visibility; requires external monitoring circuitry | Select when diagnostics are unnecessary and lowest possible system cost is prioritized over serviceability |
| SI83415BFA-IF | Supports both SPI and parallel control (A1/OE); retains full diagnostics via SPI | Offers migration path from legacy optocoupler designs while preserving diagnostic capability | Select when backward compatibility with existing parallel-control firmware is required alongside future diagnostic readiness |
Compared with SI83405BDA-IF, SI83415BDA-IFR adds full SPI diagnostics at the cost of losing parallel control - ideal for new designs prioritizing predictive maintenance. Compared with SI83415BFA-IF, it trades parallel flexibility for smaller firmware footprint and simplified layout, as only SPI signals require routing across isolation barrier.
Availability
SI83415BDA-IFR 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 lifecycle support, and traceable sourcing in high-reliability automation systems.
Supply support for SI83415BDA-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 for infrastructure, automotive, and industrial markets.
The Si834x product line was designed specifically for industrial digital output modules, replacing optocouplers and discrete driver circuits with integrated, isolated, and diagnosable smart switches for PLCs and motion controllers.
FAQ
What is the maximum continuous output current rating for SI83415BDA-IFR?
The SI83415BDA-IFR is rated for 2.5 A continuous output current at TA = 125°C with proper PCB thermal design. This value is measured at RON = 41 mΩ and applies to its single high-side switch channel under 24 V supply conditions. Derating is required above 100°C ambient per the thermal characteristics in the datasheet.
Does SI83415BDA-IFR support inrush current mode for lamp loads?
No, SI83415BDA-IFR does not support inrush current mode. Per Table 1 of the datasheet, only variants ending in "AAA" or "ADA" (e.g., SI83404AAA-IF) include this feature. SI83415BDA-IFR is optimized for steady-state inductive/resistive loads like solenoids and relays, not cold-filament incandescent lamps.
How many diagnostic reports does SI83415BDA-IFR provide, and how are they accessed?
SI83415BDA-IFR provides eight distinct diagnostic reports - including open-circuit, overcurrent, overtemperature, VDD2 undervoltage, and communication error - all accessible exclusively via its SPI interface. These are read from dedicated status registers; no indicator pins are exposed on this variant, unlike AAA or BAA versions.
What isolation certifications apply to SI83415BDA-IFR?
SI83415BDA-IFR carries pending UL 1577 recognition (1500 Vrms, 1 minute), CSA certification to IEC/EN/UL 62368-1, and CQC approval to GB4943.1. Its 1.5 kVRMS isolation rating and >100 kV/µs CMTI performance are validated per these standards and make it suitable for reinforced insulation in industrial control equipment.
Can SI83415BDA-IFR be used as a direct replacement for SI83405BDA-IF?
No - SI83415BDA-IFR is not a drop-in replacement for SI83405BDA-IF. While both are single-channel SPI-controlled high-side switches, SI83405BDA-IF lacks diagnostics capability and uses a different pinout (no MISO, no FLT). Board redesign and firmware updates are required to migrate from SI83405BDA-IF to SI83415BDA-IFR due to differing SPI signal assignments and diagnostic register mapping.
SI83415BDA-IFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 32-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 1
- Inputs - Side 1/Side 2:
- 1/0
- Channel Type:
- 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)
SI83415BDA-IFR FAQ
1.How can I place an order for SI83415BDA-IFR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI83415BDA-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 SI83415BDA-IFR reliable?
The price and inventory of SI83415BDA-IFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI83415BDA-IFR is usually 5 days.
3.What payment methods are accepted for SI83415BDA-IFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI83415BDA-IFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI83415BDA-IFR?
SI83415BDA-IFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI83415BDA-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 SI83415BDA-IFR?
For technical support, including SI83415BDA-IFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI83415BDA-IFR requirements.
6.How does Aetrix verify that SI83415BDA-IFR is sourced from the original manufacturer or authorized distributors?
All SI83415BDA-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 SI83415BDA-IFR meets industry standards.
7.What is the process for return or replacement of SI83415BDA-IFR?
All SI83415BDA-IFR units undergo pre-shipment inspection (PSI). If there is an issue with SI83415BDA-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 SI83415BDA-IFR part is unused and in its original packaging.
Return procedure for SI83415BDA-IFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI83415BDA-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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