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Skyworks Solutions Inc. SI82394BD4-IS3R
- Part No.:
- SI82394BD4-IS3R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 14-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI82394BD4-IS3R.pdf
- Description:
- DGT ISO 3.25KV 2CH GT DVR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,499
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Product details
Overview
SI82394BD4-IS3R from Skyworks Solutions is a high-side/low-side isolated gate driver IC with single PWM input, 4.0 A peak output drive capability, 8 V output UVLO threshold, and 40–600 ns programmable dead time. It features reinforced isolation (5 kVRMS), 100 kV/µs CMTI, and fail-safe low-default outputs during VDDI power-down - designed for traction inverters and on-board chargers in battery electric vehicles.
For engineers reviewing the SI82394BD4-IS3R datasheet, SI82394BD4-IS3R pinout, SI82394BD4-IS3R application, or SI82394BD4-IS3R equivalent, key selection considerations include its SOIC-14 wide-body package, deglitch-enabled noise immunity, enhanced UVLO status feedback, and automotive-grade qualification under AEC-Q100.
Technical Context
The SI82394BD4-IS3R implements a single-input, high-side/low-side topology using RF-based silicon isolation to replace optocouplers. Its internal architecture includes independent isolated channels with dedicated VDDA/VDDB supplies, EN-controlled shutdown, and RDY status signaling - all synchronized to a single PWM input with programmable dead-time insertion between complementary outputs.
This device operates with 2.5–5.5 V input supply (VDDI) and supports up to 24 V driver-side supplies. It integrates deglitch filtering, failsafe behavior on VDDI loss, and UVLO monitoring per output side - enabling robust operation in high-noise motor control and EV powertrain systems where timing integrity and fault reporting are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS withstand voltage - enables reinforced insulation per IEC62368-1 and UL 1577 for safety-critical EV power stages. |
| Peak Output Current | 4.0 A - sufficient to directly drive high-gate-charge IGBTs and SiC MOSFETs in 10–100 kW inverters without external buffers. |
| Output UVLO Threshold | 8 V - ensures reliable turn-off of power switches when driver supply drops below safe operating margin, preventing shoot-through. |
| Programmable Dead Time | 40–600 ns - configurable via external resistor to match switching characteristics of specific power devices and prevent cross-conduction. |
| CMTI | 100 kV/µs - maintains signal integrity in high-dV/dt environments like traction inverters with fast-switching SiC modules. |
| Startup Delay | 1 ms typical - provides monotonic, glitch-free initialization sequence for system-level functional safety compliance. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive applications including on-board chargers and battery management systems. |
Pinout & Package
SI82394BD4-IS3R is housed in a RoHS-compliant SOIC-14 wide-body package (7.5 mm body width), optimized for creepage/clearance in high-voltage automotive designs. Pin spacing meets reinforced insulation requirements per IEC62368-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIA | Input-side ground | Reference for input logic and EN pin; must be connected to controller-side GNDI. |
| VIB | Input-side power | 2.5–5.5 V supply for input logic and isolation barrier transmitter; requires local 1 µF + 0.1 µF decoupling. |
| PWM | Single logic input | TTL-compatible high-true PWM signal controlling complementary high-side/low-side outputs (VOA/VOB). |
| EN | Enable control | Active-high enable; pulls both outputs low when deasserted - used for system-level fault shutdown. |
| RDY | Status output | Open-drain digital flag indicating valid output state after startup delay and UVLO exit. |
| GND1 | Driver-side ground (Channel A) | Return path for high-side driver (VOA); isolated from input side and Channel B ground. |
| VDDA | High-side driver supply | 10–24 V supply for VOA output stage; monitored for 8 V UVLO detection. |
| VOA | High-side gate drive output | 4.0 A capable source/sink output driving external N-channel MOSFET/IGBT gate. |
| GND2 | Driver-side ground (Channel B) | Return path for low-side driver (VOB); galvanically isolated from GND1 and input side. |
| VDDB | Low-side driver supply | 10–24 V supply for VOB output stage; independently monitored for 8 V UVLO detection. |
| VOB | Low-side gate drive output | 4.0 A capable source/sink output with complementary timing to VOA, enforced by dead-time circuitry. |
| NC | No connect | Internally unused pin; must remain unconnected per datasheet layout guidance. |
| NC | No connect | Internally unused pin; must remain unconnected per datasheet layout guidance. |
| NC | No connect | Internally unused pin; must remain unconnected per datasheet layout guidance. |
Key Features
| Feature | Design Value |
|---|---|
| Deglitch filtering | Configurable noise rejection on PWM input - prevents false triggering from EMI in high-power EV subsystems. |
| Enhanced UVLO with status feedback | Independent 8 V UVLO per output channel plus RDY pin reporting - enables real-time health monitoring in ASIL-B systems. |
| Fail-safe default-low outputs | Both VOA and VOB drive low when VDDI is absent - eliminates risk of unintended power device activation during brownout. |
| 1 ms safe delayed startup | Guaranteed monotonic output behavior post-power-up - simplifies timing-critical initialization in ISO 26262-compliant software stacks. |
| AEC-Q100 Grade 1 qualification | Validated for automotive use from –40 °C to +125 °C ambient - supports deployment in traction inverters and OBCs without derating. |
Applications
| On-Board Charger (OBC) | Traction Inverter |
|---|---|
Use Scenario: Bidirectional AC/DC conversion in BEV charging systems with SiC MOSFET half-bridges. IC Role / Device Role / Timing Role: High-side/low-side gate driver providing isolated, synchronized PWM control with programmable dead time to prevent shoot-through. Use Value: 4.0 A drive strength ensures fast SiC gate charging; 100 kV/µs CMTI maintains timing accuracy amid high dV/dt noise from interleaved PFC stages. |
Use Scenario: Three-phase motor control in battery electric vehicle drivetrains using discrete IGBT modules. IC Role / Device Role / Timing Role: Isolated gate driver delivering complementary outputs with 40–600 ns dead-time adjustment to match IGBT switching characteristics. Use Value: Enhanced UVLO status feedback enables real-time fault detection; AEC-Q100 qualification ensures reliability over 15-year vehicle lifetime. |
| Battery Management System (BMS) | Industrial Solar Inverter |
Use Scenario: Active cell balancing and contactor control in high-voltage battery packs (400–800 V). IC Role / Device Role / Timing Role: Isolated driver enabling safe, fast switching of high-side N-channel MOSFETs in balancing circuits. Use Value: Fail-safe low-default behavior prevents hazardous contactor closure during MCU reset or supply dropout. |
Use Scenario: Transformerless string inverters with dual-level topologies requiring precise high-side/low-side timing. IC Role / Device Role / Timing Role: Single-PWM-input isolated driver delivering matched propagation delays (<30 ns) across channels for reduced THD. Use Value: SOIC-14 wide-body package provides >8 mm creepage for 1000 V DC systems; deglitch filtering suppresses grid-induced transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side/low-side isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI82394BD-IS3R | Same package and pinout, but fixed 10–200 ns dead time (no deglitch option) | Lacks programmable dead time and deglitch filtering - suitable only for stable, low-noise applications with known FET timing | Select SI82394BD-IS3R only if dead time is tightly constrained and EMI environment is benign; SI82394BD4-IS3R preferred for automotive OBC/inverter use. |
| UCC5390SCDWR | Texas Instruments part with 5 A drive, 3.3–15 V VDDI, no integrated UVLO status pin, non-AEC-Q100 | Requires external fault monitoring circuitry; not qualified for automotive temperature range or safety standards | Choose UCC5390SCDWR for industrial solar inverters where AEC-Q100 is unnecessary and higher drive current is prioritized over integrated diagnostics. |
Compared with SI82394BD-IS3R and UCC5390SCDWR, SI82394BD4-IS3R uniquely combines AEC-Q100 qualification, deglitch-enabled noise immunity, and programmable dead time - making it the only option qualified for ASIL-B traction inverter subsystems requiring both safety and flexibility.
Availability
SI82394BD4-IS3R is available at Aetrix Electronics and suitable for on-board chargers, traction inverters, and battery management systems requiring stable component supply across automotive production lifecycles.
Supply support for SI82394BD4-IS3R 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 engineered specifically for high-reliability, high-noise automotive and industrial power conversion - replacing aging optocoupler-based gate drivers with silicon-isolated alternatives offering superior CMTI, longevity, and integrated safety features.
FAQ
What is the isolation voltage rating of the SI82394BD4-IS3R?
The SI82394BD4-IS3R provides 5 kVRMS isolation rating per UL 1577 and IEC62368-1, supporting reinforced insulation in high-voltage automotive systems. This rating is validated for 1 minute at 5000 Vrms and applies across the full operating temperature range of –40 °C to +125 °C. The isolation barrier uses Skyworks' proprietary silicon RF technology, not optocoupling.
Does the SI82394BD4-IS3R support AEC-Q100 qualification?
Yes, the SI82394BD4-IS3R is AEC-Q100 Grade 1 qualified, meaning it is tested and certified for operation from –40 °C to +125 °C ambient temperature with zero-defect manufacturing controls. This qualification covers thermal cycling, humidity testing, and ESD robustness - confirming suitability for automotive traction inverters and on-board chargers.
How does the programmable dead time function in the SI82394BD4-IS3R?
The SI82394BD4-IS3R implements programmable dead time via an external resistor connected to the DT pin, enabling adjustment from 40 ns to 600 ns. This feature prevents shoot-through in high-side/low-side configurations by ensuring non-overlapping VOA and VOB drive signals - critical when driving fast-switching SiC MOSFETs or IGBTs with mismatched turn-on/turn-off delays.
What happens to the outputs of the SI82394BD4-IS3R when VDDI is unpowered?
When VDDI is unpowered, the SI82394BD4-IS3R enters fail-safe mode: both VOA and VOB are actively driven low regardless of PWM or EN state. This behavior is guaranteed by internal circuitry and eliminates risk of unintended power device activation during MCU reset, brownout, or system sleep - a core safety requirement in ISO 26262-compliant designs.
Is the SI82394BD4-IS3R pin-compatible with other Si8239x variants?
The SI82394BD4-IS3R shares the same SOIC-14 wide-body footprint and pinout with all Si8239x-IS3R variants (e.g., SI82394AD4-IS3R, SI82394CD4-IS3R), differing only in UVLO threshold (6 V / 8 V / 12 V) and dead-time configuration. This allows direct substitution within the same PCB layout when adjusting for different driver supply voltages or noise environments.
SI82394BD4-IS3R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 14-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 10V ~ 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
SI82394BD4-IS3R FAQ
1.How can I place an order for SI82394BD4-IS3R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI82394BD4-IS3R 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 SI82394BD4-IS3R reliable?
The price and inventory of SI82394BD4-IS3R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI82394BD4-IS3R is usually 5 days.
3.What payment methods are accepted for SI82394BD4-IS3R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI82394BD4-IS3R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI82394BD4-IS3R?
SI82394BD4-IS3R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI82394BD4-IS3R 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 SI82394BD4-IS3R?
For technical support, including SI82394BD4-IS3R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI82394BD4-IS3R requirements.
6.How does Aetrix verify that SI82394BD4-IS3R is sourced from the original manufacturer or authorized distributors?
All SI82394BD4-IS3R 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 SI82394BD4-IS3R meets industry standards.
7.What is the process for return or replacement of SI82394BD4-IS3R?
All SI82394BD4-IS3R units undergo pre-shipment inspection (PSI). If there is an issue with SI82394BD4-IS3R, 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 SI82394BD4-IS3R part is unused and in its original packaging.
Return procedure for SI82394BD4-IS3R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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