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Skyworks Solutions Inc. SI82394CD-IS3R
- Part No.:
- SI82394CD-IS3R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 14-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI82394CD-IS3R.pdf
- Description:
- DGT ISO 3.25KV 2CH GT DVR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,972
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Product details
Overview
SI82394CD-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, 12 V output UVLO threshold, and programmable dead time (10–200 ns). It operates with 2.5–5.5 V input supply (VDDI) and up to 24 V driver supply, and is used in traction inverters and on-board chargers for battery electric vehicles.
For engineers reviewing the SI82394CD-IS3R datasheet, SI82394CD-IS3R pinout, SI82394CD-IS3R application, or SI82394CD-IS3R equivalent, key selection considerations include its safe 1 ms delayed startup, enhanced UVLO status feedback, fail-safe low-default outputs during VDDI power-down, and SOIC-14 wide-body RoHS-compliant package.
Technical Context
The SI82394CD-IS3R implements RF-based silicon isolation with a 5 kVRMS withstand voltage and 100 kV/µs CMTI, enabling robust noise immunity in high dv/dt motor control environments. Its single PWM input architecture drives complementary high-side and low-side outputs with programmable dead time to prevent shoot-through in half-bridge configurations.
It features independent undervoltage lockout monitoring per driver side (VDDA/VDDB), status feedback via RDY pin, EN (active-high) safety enable, and deglitch filtering disabled - distinguishing it from the "4"-suffix variants with deglitch enabled. Startup behavior includes monotonic 1 ms delay before valid output assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Withstand Voltage | 5 kVRMS - meets reinforced insulation requirements per IEC62368-1 and VDE 0884-10 |
| Peak Output Current | 4.0 A - sufficient to directly drive high-gate-charge IGBTs and SiC MOSFETs in EV inverters |
| Output UVLO Threshold | 12 V - ensures reliable turn-off of power devices when driver supply drops below safe operating level |
| Dead Time Programmability | 10–200 ns - configurable via external resistor to optimize switching efficiency and prevent cross-conduction |
| Propagation Delay | 30 ns - enables precise timing control in high-frequency (>100 kHz) power conversion stages |
| Input Supply Range (VDDI) | 2.5–5.5 V - compatible with standard logic-level microcontrollers and isolated DC-DC bias supplies |
| Operating Temperature | –40 to +125 °C - qualified for automotive under-hood and industrial motor drive environments |
Pinout & Package
SI82394CD-IS3R is housed in a RoHS-compliant SOIC-14 wide-body package (7.5 mm body width, 10.3 mm length), rated for 260 °C peak reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIA | Input ground reference | Input-side GND - must be connected to controller ground plane; not internally tied to VIB or GNDI |
| VIB | Input power supply return | Input-side VDDI return - forms local input power loop with VDDI; separate from VIA |
| VDDI | Input-side supply | 2.5–5.5 V logic supply for input circuitry and isolation transmitter; requires local 1 µF + 0.1 µF decoupling |
| PWM | Single logic input | TTL-compatible high-true PWM signal - high = VOA=H/VOB=L; low = VOA=L/VOB=H |
| EN | Enable control | Active-high safety enable - pulls both outputs low when deasserted; requires 100 kΩ pull-down to GNDI |
| GNDI | Input ground | Reference for EN, PWM, VDDI - galvanically isolated from output-side grounds (GND1/GND2) |
| VDDA | High-side driver supply | 10–24 V supply for high-side output stage; monitored for UVLO independently |
| VOA | High-side output | 4.0 A capable source/sink driver - connects to gate of high-side power device (e.g., IGBT collector-emitter switch) |
| GND1 | High-side ground | Return path for VDDA and VOA - forms isolated high-side power domain |
| VDDB | Low-side driver supply | 10–24 V supply for low-side output stage; monitored for UVLO independently |
| VOB | Low-side output | 4.0 A capable source/sink driver - connects to gate of low-side power device in half-bridge topology |
| GND2 | Low-side ground | Return path for VDDB and VOB - forms isolated low-side power domain |
| RDY | Status feedback | Open-drain digital output - goes high after 1 ms safe startup and remains high while both VDDA/VDDB are valid |
| NC | No connect | Internally unused pin - must remain unconnected per datasheet; no routing or soldering required |
Key Features
| Feature | Design Value |
|---|---|
| RF-based silicon isolation | Enables 5 kVRMS withstand and 100 kV/µs CMTI without LED aging or temperature drift issues of optocouplers |
| Enhanced UVLO with status feedback | Monitors VDDA and VDDB independently and asserts RDY only when both are above 12 V threshold |
| Fail-safe default-low outputs | VOA and VOB drive low automatically if VDDI is lost - prevents unintended power device turn-on during brownout |
| 1 ms delayed safe startup | Guarantees monotonic output behavior during power-up, eliminating glitches that could trigger shoot-through |
| Programmable dead time (10–200 ns) | Configured via single external resistor - eliminates need for external logic or MCU timing compensation |
Applications
| Motor Control Systems | On-board Chargers (OBC) |
|---|---|
Use Scenario: Driving high-voltage half-bridge IGBTs in 400 V/800 V traction inverters for battery electric vehicles. IC Role / Device Role / Timing Role: High-side/low-side isolated gate driver with single PWM input and programmable dead time to prevent shoot-through. Use Value: 4.0 A peak drive current and 30 ns propagation delay ensure fast, synchronized switching of high-gate-charge power devices at >20 kHz. | Use Scenario: Controlling dual active bridge (DAB) or phase-shifted full-bridge topologies in bidirectional OBCs. IC Role / Device Role / Timing Role: Isolated gate driver providing reinforced insulation between primary and secondary sides of isolated DC-DC converter. Use Value: 5 kVRMS isolation rating and AEC-Q100 qualification meet automotive safety requirements for high-voltage charging systems. |
| Battery Management Systems (BMS) | Solar and Industrial Inverters |
Use Scenario: Driving pre-charge and main contactor MOSFETs in high-voltage battery disconnect units (BDUs). IC Role / Device Role / Timing Role: Safety-critical isolated driver with EN pin and RDY status feedback for controlled power sequencing. Use Value: Active-high EN allows centralized safety shutdown; RDY confirms valid power domains before enabling contactors. | Use Scenario: Gate driving SiC MOSFETs in three-phase string inverters for commercial solar farms. IC Role / Device Role / Timing Role: High-CMTI isolated driver ensuring reliable operation in noisy EMI environments near transformers and chokes. Use Value: 100 kV/µs common-mode transient immunity prevents false triggering during lightning surge events or grid transients. |
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-IS | SOIC-16 wide-body package (vs. SOIC-14); identical electrical specs and pinout except NC pin count differs | Requires PCB layout change due to larger footprint and different land pattern | Select when board space permits wider SOIC-16 and legacy design reuse is prioritized |
| UCC5390SCDR | Texas Instruments part with 4 A drive, but uses capacitive isolation, 3.3/5 V VDDI only, and fixed 120 ns dead time | Lacks programmable dead time and 2.5 V VDDI support; RDY pin absent | Choose for TI ecosystem designs where fixed dead time suffices and 2.5 V logic compatibility is not required |
Compared with SI82394CD-IS and UCC5390SCDR, the SI82394CD-IS3R uniquely supports 2.5 V VDDI operation, offers user-adjustable dead time (10–200 ns), and delivers guaranteed 1 ms safe startup - making it optimal for next-generation automotive and high-reliability industrial inverters demanding flexible timing control and ultra-low-voltage interface compatibility.
Availability
SI82394CD-IS3R is available at Aetrix Electronics and suitable for traction inverters, on-board chargers, and battery management systems requiring stable component supply across automotive production lifecycles.
Supply support for SI82394CD-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 product line was designed specifically for high-reliability isolated gate driving in automotive traction systems and industrial motor controls, emphasizing safety, longevity, and noise immunity over optocoupler-based alternatives.
FAQ
What is the isolation voltage rating of the SI82394CD-IS3R?
The SI82394CD-IS3R has a UL 1577-recognized isolation withstand voltage of 5 kVRMS for 1 minute. This rating applies across the isolation barrier between input (VDDI/VIA/VIB/PWM/EN/RDY) and output (VDDA/VOA/GND1/VDDB/VOB/GND2) domains, satisfying reinforced insulation requirements per IEC62368-1 and VDE 0884-10 standards. The SI82394CD-IS3R achieves this using Skyworks' proprietary silicon RF isolation technology.
Does the SI82394CD-IS3R support 2.5 V logic inputs?
Yes, the SI82394CD-IS3R supports a 2.5–5.5 V input supply range (VDDI), enabling direct interfacing with 2.5 V microcontrollers and FPGAs without level-shifting. Its PWM input is TTL-compatible and functions correctly across this full VDDI range. This capability is confirmed in the Si8239x datasheet Section 1 (Ordering Guide) and Section 4 (Electrical Characteristics), where VDDI min is specified as 2.5 V.
How does the RDY pin function on the SI82394CD-IS3R?
The RDY pin on the SI82394CD-IS3R is an open-drain status output that goes high only after the 1 ms safe startup delay and when both VDDA and VDDB are above their 12 V UVLO thresholds. It remains high during normal operation and pulls low if either driver supply falls below UVLO. This provides system-level confirmation that both output domains are powered and ready - a critical feature for safety-critical automotive applications using the SI82394CD-IS3R.
Is the SI82394CD-IS3R pin-compatible with other Si8239x variants?
The SI82394CD-IS3R is pin-compatible with all Si8239x devices in the SOIC-14 wide-body package (e.g., SI82394AD-IS3R, SI82394BD-IS3R), sharing identical pinout, footprint, and land pattern. However, it is not pin-compatible with SOIC-16 or SOIC-14 narrow-body variants due to differing pin counts and spacing. Electrical differences (e.g., UVLO threshold, dead time setting) do not affect physical compatibility within the same package family.
What safety certifications apply to the SI82394CD-IS3R?
The SI82394CD-IS3R carries pending certifications including UL 1577 (5000 Vrms, 1 min), CSA, VDE 0884-10 (basic insulation), and IEC60950-1/62368-1 (reinforced insulation). It is also AEC-Q100 qualified for automotive use and RoHS-compliant. These approvals are documented in the Si8239x datasheet Section "Safety Approvals (Pending)" and confirm suitability for high-isolation applications such as EV traction inverters and industrial UPS systems.
SI82394CD-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):
- 55ns, 40ns
- 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
SI82394CD-IS3R FAQ
1.How can I place an order for SI82394CD-IS3R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI82394CD-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 SI82394CD-IS3R reliable?
The price and inventory of SI82394CD-IS3R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI82394CD-IS3R is usually 5 days.
3.What payment methods are accepted for SI82394CD-IS3R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI82394CD-IS3R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI82394CD-IS3R?
SI82394CD-IS3R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI82394CD-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 SI82394CD-IS3R?
For technical support, including SI82394CD-IS3R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI82394CD-IS3R requirements.
6.How does Aetrix verify that SI82394CD-IS3R is sourced from the original manufacturer or authorized distributors?
All SI82394CD-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 SI82394CD-IS3R meets industry standards.
7.What is the process for return or replacement of SI82394CD-IS3R?
All SI82394CD-IS3R units undergo pre-shipment inspection (PSI). If there is an issue with SI82394CD-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 SI82394CD-IS3R part is unused and in its original packaging.
Return procedure for SI82394CD-IS3R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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