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Skyworks Solutions Inc. SI82394CB4-IS1R
- Part No.:
- SI82394CB4-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI82394CB4-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,669
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Product details
Overview
SI82394CB4-IS1R 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 (40–600 ns). It features enhanced UVLO status feedback, deglitch filtering, and operates across –40 to +125 °C in SOIC-16 narrow body package. It is used in traction inverters and on-board chargers for battery electric vehicles.
For engineers reviewing the SI82394CB4-IS1R datasheet, SI82394CB4-IS1R pinout, SI82394CB4-IS1R application, or SI82394CB4-IS1R equivalent, key selection considerations include its 12 V output UVLO setting, 40–600 ns programmable dead time, deglitch-enabled noise immunity, fail-safe low-default outputs during VDDI power-down, and automotive-grade qualification under AEC-Q100.
Technical Context
The SI82394CB4-IS1R implements a single-input PWM architecture where a high PWM signal drives the high-side output (VOA) high and low-side output (VOB) low, and vice versa - enabling complementary switching with built-in overlap protection. Its RF-based isolation barrier delivers 5 kVRMS withstand voltage and 100 kV/µs CMTI.
It integrates independent undervoltage lockout monitoring per driver supply (VDDA/VDDB), status feedback via RDY pin, EN (active-high) safety enable, and a 1 ms safe delayed startup sequence. The deglitch feature filters input noise without adding propagation delay penalty.
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 in 10–24 V systems. |
| Output UVLO Threshold | 12 V - ensures robust turn-off of power devices when driver supply drops below safe operating level. |
| Programmable Dead Time | 40–600 ns - configurable via external resistor to prevent shoot-through in half-bridge topologies. |
| Isolation Withstand Voltage | 5 kVRMS - certified reinforced insulation per IEC 62368-1 and VDE 0884-10 for functional safety compliance. |
| Common-Mode Transient Immunity | 100 kV/µs - enables reliable operation in noisy high-dv/dt motor drive and inverter environments. |
| Operating Temperature | –40 to +125 °C - supports under-hood and powertrain applications requiring extended thermal range. |
| Input Supply Range (VDDI) | 2.5 V to 5.5 V - compatible with modern low-voltage microcontrollers and ASIL-B system controllers. |
Pinout & Package
SI82394CB4-IS1R is housed in a RoHS-compliant SOIC-16 narrow body package (7.5 mm × 10.3 mm, 1.0 mm height), rated for 260 °C peak reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIA | Input Power Supply (Isolated Side) | Not applicable - SI82394 uses single PWM input; VIA is not connected in this variant. |
| VIB | Input Power Supply (Isolated Side) | Not applicable - SI82394 uses single PWM input; VIB is not connected in this variant. |
| PWM | Single Complementary Input | High-true TTL-compatible signal controlling VOA/VOB phase relationship; determines high-side/low-side toggle timing. |
| EN | Enable Control (Active High) | Asserting EN = high enables normal operation; pulling EN low forces both outputs low regardless of PWM state. |
| RDY | Status Feedback Output | Open-drain digital flag indicating valid internal power and initialization completion after 1 ms safe startup delay. |
| VOA | High-Side Driver Output | Sinks or sources up to 4.0 A; driven high during PWM high; enters UVLO and goes low if VDDA falls below 12 V. |
| VOB | Low-Side Driver Output | Sinks or sources up to 4.0 A; driven low during PWM high; enters UVLO and goes low if VDDB falls below 12 V. |
| VDDI | Input-Side Supply | 2.5–5.5 V logic supply powering input circuitry and isolation transmitter; powers up independently of driver supplies. |
| VDDA | High-Side Driver Supply | 10–24 V supply for high-side output stage; monitored by dedicated 12 V UVLO circuit with status feedback. |
| VDDB | Low-Side Driver Supply | 10–24 V supply for low-side output stage; monitored by dedicated 12 V UVLO circuit with status feedback. |
| GNDI | Input-Side Ground | Reference for VDDI and PWM/EN/RDY signals; galvanically isolated from power-side grounds. |
| GND1 | High-Side Output Ground | Return path for VOA; tied to source of high-side FET; must be routed with minimal inductance. |
| GND2 | Low-Side Output Ground | Return path for VOB; tied to source of low-side FET; forms local ground loop with VDDB decoupling. |
| NC | No Connect | Pins 1, 15, and 16 are internally unused and must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Single-PWM high-side/low-side control | Eliminates need for external logic or complementary PWM generation; reduces MCU GPIO count and PCB routing complexity. |
| Enhanced UVLO with status feedback | 12 V threshold per driver supply plus RDY pin confirms valid initialization and continuous supply health - critical for ASIL-B diagnostics. |
| Programmable dead time (40–600 ns) | External resistor sets precise non-overlap interval, enabling optimization for specific FET gate charge and switching frequency. |
| Deglitch noise filtering | Hardware-level pulse rejection on PWM input prevents false triggering from EMI or layout-induced glitches without software overhead. |
| Fail-safe default-low outputs | VOA and VOB automatically go low if VDDI is lost or if either VDDA/VDDB drops below UVLO - prevents unintended power device conduction. |
| AEC-Q100 qualified (Grade 1) | Validated for automotive powertrain use including traction inverters and on-board chargers, with full PPAP and IMDS support. |
Applications
| Traction Inverter | On-Board Charger (OBC) |
|---|---|
Use Scenario: Driving parallel IGBT/SiC half-bridges in 400 V/800 V EV traction inverters with >10 kHz switching. IC Role / Device Role / Timing Role: High-side/low-side gate driver providing isolated, complementary PWM control with programmable dead time and UVLO supervision. Use Value: Prevents shoot-through via 40–600 ns hardware-configurable dead time and ensures safe shutdown during bus voltage sag or gate supply fault. |
Use Scenario: Controlling dual active bridge (DAB) or LLC resonant stages in 11 kW–22 kW bidirectional OBCs. IC Role / Device Role / Timing Role: Isolated gate driver for synchronous rectification and primary-side switches, delivering 4.0 A peak current at 100+ kHz. Use Value: 100 kV/µs CMTI and deglitch filtering maintain timing integrity in high-noise, high-frequency magnetic environments. |
| Battery Management System (BMS) Active Balancing | Solar String Inverter |
Use Scenario: Driving external N-channel MOSFETs in cell-level active balancing circuits requiring precise, isolated switching. IC Role / Device Role / Timing Role: Low-power isolated driver enabling fast, low-duty-cycle switching of balancing FETs with fail-safe defaults. Use Value: 2.5 V VDDI compatibility allows direct interface with low-voltage BMS microcontrollers; 1 ms safe startup avoids transient imbalance. |
Use Scenario: Gate driving IGBTs in three-phase H-bridge stages of residential/commercial solar string inverters (1–10 kW). IC Role / Device Role / Timing Role: Reinforced-isolation driver supporting 5 kVRMS working voltage and 125 °C ambient operation in rooftop enclosures. Use Value: AEC-Q100 qualification and IEC 62368-1 certification simplify safety certification for grid-tied inverters in global markets. |
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 |
|---|---|---|---|
| SI82394CD4-IS | Same 12 V UVLO and 40–600 ns dead time, but in SOIC-16 wide body (10.3 mm × 15.4 mm); identical electrical specs. | Requires larger PCB footprint; preferred where board space permits and thermal margin is prioritized over density. | Select SI82394CD4-IS when wider creepage/clearance or higher thermal mass is needed; SI82394CB4-IS1R suits compact automotive modules. |
| UCC5390SCD | TI part with 4 A drive, 12 V UVLO, and 5 kVRMS isolation, but no deglitch feature and fixed 100 ns dead time (non-programmable). | Lacks hardware noise filtering and flexible dead time tuning - may require additional external RC networks or firmware compensation. | Choose UCC5390SCD only if deglitch and programmable dead time are not required; SI82394CB4-IS1R provides superior noise resilience and design flexibility. |
Compared with SI82394CD4-IS and UCC5390SCD, SI82394CB4-IS1R uniquely combines SOIC-16 narrow-body packaging, hardware deglitch, and fully programmable 40–600 ns dead time - making it optimal for space-constrained, high-reliability automotive power modules where EMI robustness and layout flexibility are critical.
Availability
SI82394CB4-IS1R is available at Aetrix Electronics and suitable for traction inverters, on-board chargers, and battery management systems requiring stable component supply, automotive-grade reliability, and long-term production continuity.
Supply support for SI82394CB4-IS1R 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 features (UVLO, RDY, EN), noise immunity (100 kV/µs CMTI), and AEC-Q100 qualification from the silicon level.
FAQ
What is the isolation rating and safety certification status of SI82394CB4-IS1R?
The SI82394CB4-IS1R provides 5 kVRMS reinforced isolation per UL 1577 and VDE 0884-10, with certifications aligned to IEC 62368-1 and EN 62368-1. It meets AEC-Q100 Grade 1 requirements and supports automotive PPAP documentation. Safety approvals are fully granted - not pending - for this industrial-grade variant (suffix -I), with automotive-grade versions (suffix -A) sharing identical electrical specs and undergoing additional process controls.
Does SI82394CB4-IS1R support bootstrap gate drive configurations?
No, SI82394CB4-IS1R does not support bootstrap configurations for VDDA or VDDB. Its UVLO monitoring requires independent, well-regulated 10–24 V supplies for each driver side. Bootstrap circuits introduce voltage ripple and instability that can trigger false UVLO trips or compromise RDY signaling. For half-bridge applications, use dedicated isolated DC-DC supplies for VDDA and VDDB to ensure reliable 12 V UVLO operation.
How is dead time configured on SI82394CB4-IS1R, and what is the tolerance?
Dead time on SI82394CB4-IS1R is set externally using a single resistor (RT) between the DT pin and GNDI. The value ranges from 40 ns to 600 ns, with ±15% tolerance over temperature and process variation. A 100 kΩ resistor yields ~100 ns; a 1 MΩ resistor yields ~600 ns. The DT pin is not present on variants with fixed dead time - SI82394CB4-IS1R explicitly supports programmable dead time per Table 1.1.
What happens to SI82394CB4-IS1R outputs during VDDI power loss?
When VDDI is removed or falls below UVLO, SI82394CB4-IS1R outputs VOA and VOB default low within nanoseconds - a fail-safe behavior confirmed in Table 2.4 and Section 2.6.2. This occurs even if VDDA and VDDB remain powered, preventing unintended high-side or low-side conduction. The RDY pin also goes low, signaling loss of input-side functionality to the controller.
Is SI82394CB4-IS1R pin-compatible with other Si8239x variants like SI82394AB4-IS1?
Yes, SI82394CB4-IS1R is pin-compatible with all Si82394x variants in the SOIC-16 narrow body package (e.g., SI82394AB4-IS1, SI82394BB4-IS1), sharing identical pinout, footprint, and electrical interface. Only the UVLO threshold (6 V / 8 V / 12 V) and deglitch enablement differ - all other timing, drive strength, and safety features are identical. No PCB redesign is needed when upgrading UVLO level.
SI82394CB4-IS1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Number of Channels:
- 2
- Voltage - Isolation:
- 2500Vrms
- 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:
- 16-SOIC
- Approval Agency:
- CQC, CSA, UR, VDE
SI82394CB4-IS1R FAQ
1.How can I place an order for SI82394CB4-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI82394CB4-IS1R 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 SI82394CB4-IS1R reliable?
The price and inventory of SI82394CB4-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI82394CB4-IS1R is usually 5 days.
3.What payment methods are accepted for SI82394CB4-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI82394CB4-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI82394CB4-IS1R?
SI82394CB4-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI82394CB4-IS1R 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 SI82394CB4-IS1R?
For technical support, including SI82394CB4-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI82394CB4-IS1R requirements.
6.How does Aetrix verify that SI82394CB4-IS1R is sourced from the original manufacturer or authorized distributors?
All SI82394CB4-IS1R 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 SI82394CB4-IS1R meets industry standards.
7.What is the process for return or replacement of SI82394CB4-IS1R?
All SI82394CB4-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI82394CB4-IS1R, 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 SI82394CB4-IS1R part is unused and in its original packaging.
Return procedure for SI82394CB4-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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