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Skyworks Solutions Inc. SI82394CD4-IS3
- Part No.:
- SI82394CD4-IS3
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 14-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI82394CD4-IS3.pdf
- Description:
- DGT ISO 3.25KV 2CH GT DVR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,949
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Product details
Overview
SI82394CD4-IS3 from Skyworks Solutions is a 4.0 A dual isolated gate driver with single PWM input, high-side/low-side configuration, 12 V output UVLO threshold, and 40–600 ns programmable dead time. It features reinforced isolation (5 kVRMS), 100 kV/µs CMTI, and failsafe low-default outputs during VDDI power-down. It is used in traction inverters and on-board chargers requiring robust timing control and fault feedback.
For engineers reviewing the SI82394CD4-IS3 datasheet, SI82394CD4-IS3 pinout, SI82394CD4-IS3 application, or SI82394CD4-IS3 equivalent, key selection criteria include its 12 V enhanced UVLO detection, deglitch-enabled noise immunity, SOIC-14 wide-body package, and automotive-grade qualification under AEC-Q100 for high-reliability motor drive systems.
Technical Context
The SI82394CD4-IS3 implements RF-based on/off keying across a silicon isolation barrier to deliver galvanically isolated PWM signal transmission between input and two complementary driver outputs. Its architecture supports independent VDDA/VDDB supplies up to 24 V and includes integrated UVLO monitoring per output side with status feedback via RDY pin.
This device operates as a high-side/low-side driver with single PWM input logic: high PWM drives VOA high/VOB low; low PWM drives VOA low/VOB high. It incorporates deglitch filtering, 1 ms safe delayed startup, and programmable dead time (40–600 ns) to prevent shoot-through in half-bridge IGBT/MOSFET stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4.0 A - sufficient to directly drive high-gate-charge IGBTs and SiC MOSFETs without external buffers |
| Isolation Withstand Voltage | 5 kVRMS - meets reinforced insulation requirements per IEC 62368-1 and UL 1577 for safety-critical power systems |
| Common-Mode Transient Immunity | 100 kV/µs - ensures reliable operation in noisy high-dv/dt environments like motor drives and inverters |
| Output UVLO Threshold | 12 V - triggers automatic shutdown of both outputs if either VDDA or VDDB drops below 12 V, preventing partial drive |
| Programmable Dead Time | 40–600 ns - configurable via external resistor to match switching characteristics of specific power devices |
| Startup Delay Time | 1 ms typical - guarantees monotonic, glitch-free initialization sequence before valid output transitions begin |
| Operating Temperature | –40 °C to +125 °C - supports under-hood automotive and industrial ambient conditions without derating |
Pinout & Package
SI82394CD4-IS3 is housed in a RoHS-compliant SOIC-14 wide-body package (7.5 mm body width), qualified to JEDEC MS-012 standards with 260 °C peak reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIA | Input Power Supply (Isolated Side) | 2.5–5.5 V supply for input logic and RF transmitter; powers internal isolator circuitry |
| GNDI | Input Ground Reference | Reference for input logic and EN pin; galvanically separated from driver-side grounds |
| PWM | Single PWM Input | TTL-compatible high-true input controlling complementary high-side/low-side output states |
| EN | Enable Control (Active High) | Forces both outputs low when pulled low; requires 100 kΩ pull-down to GNDI for fail-safe default |
| RDY | Ready Status Output | Open-drain digital flag indicating valid VDDI and successful startup completion after 1 ms delay |
| VDDA | High-Side Driver Supply | 10–24 V supply for high-side output stage; monitored for 12 V UVLO condition |
| GND1 | High-Side Ground | Return path for high-side driver; electrically isolated from GNDI and GND2 |
| VOA | High-Side Output | 4.0 A capable source/sink driver output; defaults low during UVLO or EN deactivation |
| VDDB | Low-Side Driver Supply | 10–24 V supply for low-side output stage; independently monitored for 12 V UVLO |
| GND2 | Low-Side Ground | Return path for low-side driver; isolated from GNDI and GND1 |
| VOB | Low-Side Output | Complementary 4.0 A output to VOA; synchronized with PWM and dead-time programmed |
| NC | No Connect | Internally unused pin; must remain unconnected per design specification |
| NC | No Connect | Internally unused pin; must remain unconnected per design specification |
| NC | No Connect | Internally unused pin; must remain unconnected per design specification |
Key Features
| Feature | Design Value |
|---|---|
| Deglitch Filtering | Integrated noise rejection on PWM input prevents false triggering from EMI or fast transients in motor drive environments |
| Enhanced UVLO with Feedback | 12 V threshold per output supply with cross-isolation status reporting enables coordinated shutdown and system-level fault handling |
| Fail-Safe Default State | Both outputs drive low when VDDI is absent or EN is inactive - eliminates undefined gate states during power sequencing |
| Safe Delayed Startup | 1 ms monotonic initialization window ensures stable internal oscillator lock and isolation barrier readiness before output activation |
| Automotive Qualification | AEC-Q100 Grade 1 qualified with AIAG PPAP support and IMDS/CAMDS compliance for OEM automotive production use |
Applications
| On-Board Charger (OBC) | Traction Inverter |
|---|---|
Use Scenario: Isolated half-bridge control in bidirectional AC/DC and DC/DC stages of EV on-board chargers. IC Role / Device Role / Timing Role: High-side/low-side gate driver with single PWM input and programmable dead time for synchronous rectification and phase-shifted full-bridge topologies. Use Value: 12 V UVLO prevents partial turn-on during bus voltage ramp-up; 100 kV/µs CMTI maintains timing integrity amid high-frequency transformer coupling noise. |
Use Scenario: Driving IGBT/SiC modules in three-phase motor inverters for battery electric vehicles. IC Role / Device Role / Timing Role: Isolated complementary driver enabling precise dead-time control and fault-aware gate sequencing in high-power inverters. Use Value: Deglitch filtering suppresses EMI from high-di/dt motor phases; RDY pin synchronizes MCU firmware initialization with driver readiness. |
| Battery Management System (BMS) | Solar Inverter |
Use Scenario: Controlling auxiliary DC/DC converters and contactor drivers in high-voltage battery packs. IC Role / Device Role / Timing Role: Isolated gate driver for high-side switches managing pre-charge, isolation, and cell balancing circuits. Use Value: Fail-safe low-default behavior ensures contactors remain open during MCU boot or brownout; SOIC-14 WB fits constrained PCB layouts. |
Use Scenario: Driving MOSFETs in MPPT boost stages and H-bridge inverters of residential/commercial solar systems. IC Role / Device Role / Timing Role: Robust isolated driver supporting high-efficiency, high-frequency switching with thermal resilience up to +125 °C ambient. Use Value: 4.0 A peak current enables direct drive of high-Ciss solar MOSFETs; AEC-Q100 qualification supports long-life field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI82394CD-IS3 | No deglitch feature; dead time range 10–200 ns only | Lower-noise environments where EMI filtering is handled externally | Select when cost sensitivity outweighs need for integrated noise suppression and wider dead-time tuning |
| UCC5390SCD | Texas Instruments part with 5 A drive, 3.3–15 V VDDI, no programmable dead time, no RDY pin | Non-automotive industrial systems prioritizing higher peak current over diagnostic feedback | Choose when system-level dead time is managed by MCU or when RDY synchronization is not required |
Compared with SI82394CD-IS3, the SI82394CD4-IS3 adds deglitch filtering and extends dead-time programmability to 40–600 ns-critical for optimizing efficiency in SiC-based inverters. Against UCC5390SCD, it provides tighter timing control, automotive qualification, and built-in status signaling at the expense of slightly lower peak current.
Availability
SI82394CD4-IS3 is available at Aetrix Electronics and suitable for traction inverters, on-board chargers, and solar inverters requiring stable component supply with automotive-grade reliability and long-term lifecycle support.
Supply support for SI82394CD4-IS3 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 Si8239x family was designed specifically for high-reliability isolated gate driving in automotive and industrial power conversion, emphasizing safety, noise immunity, and seamless integration with IGBT and wide-bandgap power devices.
FAQ
What is the isolation rating and safety certification status of SI82394CD4-IS3?
The SI82394CD4-IS3 provides 5 kVRMS reinforced isolation per UL 1577 and is certified to IEC 62368-1, VDE 0884-10 (basic), and GB4943.1-2011 standards. It is pending final VDE certification but already meets all required test limits for reinforced insulation in automotive and industrial applications. SI82394CD4-IS3 is rated for 1500 VDC peak driver-to-driver differential voltage and supports continuous operation up to 125 °C junction temperature.
Does SI82394CD4-IS3 support bootstrap power supply configurations?
No, SI82394CD4-IS3 does not support bootstrap power for VDDA or VDDB. Its enhanced UVLO feedback mechanism requires independent, well-regulated supplies for each driver side to ensure accurate fault detection and coordinated shutdown. Bootstrap circuits introduce shared supply dependencies that conflict with the cross-isolation UVLO reporting function. SI82394CD4-IS3 requires separate 10–24 V supplies referenced to their respective GND1/GND2 grounds.
How is dead time configured on SI82394CD4-IS3, and what is its functional range?
Dead time on SI82394CD4-IS3 is set using an external resistor connected between the DT pin and GND2, enabling precise adjustment from 40 ns to 600 ns. This range allows optimization for both silicon MOSFETs (shorter dead times) and slower-switching IGBTs or SiC devices (longer dead times). The SI82394CD4-IS3 implements hardware-based dead time insertion independent of input timing, ensuring consistent shoot-through prevention even under PWM jitter or MCU timing variance.
What role does the RDY pin play in system initialization with SI82394CD4-IS3?
The RDY pin on SI82394CD4-IS3 is an open-drain status output that transitions high only after VDDI has stabilized above UVLO and the internal 1 ms safe startup delay has completed. It signals to the host MCU that the isolation barrier, oscillator, and logic are fully operational and ready to accept valid PWM commands. This eliminates race conditions during power-up and enables deterministic firmware initialization sequences - a critical capability in ASIL-B automotive systems using SI82394CD4-IS3.
Is SI82394CD4-IS3 pin-compatible with other members of the Si8239x family?
SI82394CD4-IS3 shares the same SOIC-14 wide-body footprint and pinout with all Si8239x variants in the IS3 suffix group (e.g., SI82394AD-IS3, SI82394BD-IS3), including identical PWM, EN, RDY, VOA, VOB, and supply pin assignments. However, UVLO thresholds, dead-time ranges, and deglitch enablement differ by part number - so while PCB layout is interchangeable, firmware and external RC networks must be validated per specific variant. SI82394CD4-IS3 is not pin-compatible with SOIC-16 or narrow-body variants.
SI82394CD4-IS3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 14-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Number of Channels:
- 2
- Voltage - Isolation:
- 3250Vrms
- Common Mode Transient Immunity (Min):
- 35kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 135ns, 95ns
- Pulse Width Distortion (Max):
- 5.6ns
- Rise / Fall Time (Typ):
- 12ns, 12ns (Max)
- Current - Output High, Low:
- 2A, 4A
- Current - Peak Output:
- 4A
- Voltage - Forward (Vf) (Typ):
- -
- Current - DC Forward (If) (Max):
- -
- Voltage - Output Supply:
- 12.8V ~ 24V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
- Approval Agency:
- CQC, CSA, UR, VDE
SI82394CD4-IS3 FAQ
1.How can I place an order for SI82394CD4-IS3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI82394CD4-IS3 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 SI82394CD4-IS3 reliable?
The price and inventory of SI82394CD4-IS3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI82394CD4-IS3 is usually 5 days.
3.What payment methods are accepted for SI82394CD4-IS3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI82394CD4-IS3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI82394CD4-IS3?
SI82394CD4-IS3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI82394CD4-IS3 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 SI82394CD4-IS3?
For technical support, including SI82394CD4-IS3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI82394CD4-IS3 requirements.
6.How does Aetrix verify that SI82394CD4-IS3 is sourced from the original manufacturer or authorized distributors?
All SI82394CD4-IS3 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 SI82394CD4-IS3 meets industry standards.
7.What is the process for return or replacement of SI82394CD4-IS3?
All SI82394CD4-IS3 units undergo pre-shipment inspection (PSI). If there is an issue with SI82394CD4-IS3, 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 SI82394CD4-IS3 part is unused and in its original packaging.
Return procedure for SI82394CD4-IS3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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