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Skyworks Solutions Inc. SI82394AB4-IS1R
- Part No.:
- SI82394AB4-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI82394AB4-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,190
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Product details
Overview
SI82394AB4-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, 6 V output UVLO threshold, enhanced UVLO status feedback, and programmable dead time (40–600 ns). It operates with 2.5–5.5 V input supply (VDDI) and up to 24 V driver supplies, and is used in traction inverters and on-board chargers requiring reinforced isolation and fail-safe startup.
For engineers reviewing the SI82394AB4-IS1R datasheet, SI82394AB4-IS1R pinout, SI82394AB4-IS1R application, or SI82394AB4-IS1R equivalent, this page delivers verified specifications, SOIC-16 narrow-body package details, automotive-grade safety features (AEC-Q100), and real-world design context for motor control and isolated DC-DC systems.
Technical Context
The SI82394AB4-IS1R implements RF-based silicon isolation with a 5 kVRMS withstand voltage and 100 kV/µs CMTI, enabling robust noise immunity in high dv/dt environments like IGBT/MOSFET half-bridge switching. Its single PWM input controls complementary high-side and low-side outputs with integrated deglitch filtering and fail-safe default-low behavior during VDDI power-down.
Startup includes a guaranteed 1 ms safe delayed initialization sequence, while programmable dead time (40–600 ns) prevents shoot-through in bridge configurations. The RDY pin signals output readiness, and EN (active-high) provides system-level fault shutdown independent of input logic states.
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 - drives high-gate-charge IGBTs and SiC MOSFETs without external buffers. |
| Output UVLO Threshold | 6 V - ensures reliable turn-off when driver supply drops below safe operating level. |
| Dead Time Range | 40–600 ns - configurable via external resistor to prevent cross-conduction in half-bridge topologies. |
| Propagation Delay | 30 ns - enables high-frequency switching (>1 MHz) with tight timing control. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial ambient conditions. |
| CMTI | 100 kV/µs - suppresses false triggering in noisy motor drive and inverter environments. |
Pinout & Package
SI82394AB4-IS1R is housed in a RoHS-compliant SOIC-16 narrow-body package (7.5 mm width), rated for 260 °C peak reflow, with creepage/clearance optimized for reinforced insulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDI | Input-side power supply | 2.5–5.5 V logic supply; powers internal RF transmitter and control logic. |
| GNDI | Input-side ground reference | Reference for PWM and EN inputs; galvanically isolated from driver-side grounds. |
| PWM | Single high-true logic input | Drives VOA high / VOB low when high; VOA low / VOB high when low. |
| EN | Enable control (active-high) | Forces both outputs low when low; requires 100 kΩ pull-down to GNDI. |
| RDY | Ready status output | High when outputs are valid and stable post-startup (after 1 ms delay). |
| VDDA | High-side driver supply | 10–24 V supply for upper gate driver; monitored for UVLO independently. |
| GND1 | High-side driver ground | Return path for high-side output; isolated from GNDI and GND2. |
| VOA | High-side output | 4.0 A sink/source capable; defaults low during VDDI UVLO or EN deactivation. |
| VDDB | Low-side driver supply | 10–24 V supply for lower gate driver; independently monitored for UVLO. |
| GND2 | Low-side driver ground | Return path for low-side output; isolated from GNDI and GND1. |
| VOB | Low-side output | Complementary to VOA; synchronized with dead-time insertion. |
| NC | No-connect | Not internally bonded; must remain unconnected per datasheet. |
| NC | No-connect | Not internally bonded; must remain unconnected per datasheet. |
| NC | No-connect | Not internally bonded; must remain unconnected per datasheet. |
| NC | No-connect | Not internally bonded; must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Single PWM input with complementary outputs | Reduces controller GPIO count and simplifies timing-critical gate drive sequencing in half-bridge applications. |
| Programmable dead time (40–600 ns) | Eliminates need for external RC networks or digital delay blocks to prevent shoot-through in motor inverters. |
| Enhanced UVLO with status feedback | Provides active fault reporting via RDY pin and forces safe low-state outputs during supply brownout. |
| 1 ms safe delayed startup | Ensures monotonic output behavior during power-up, preventing transient glitches that could damage power stages. |
| RF-based silicon isolation (5 kVRMS) | Delivers higher reliability, tighter propagation skew, and better temperature stability than optocoupler alternatives. |
| Deglitch filtering | Rejects sub-50 ns noise pulses on PWM/EN lines, improving robustness in EMI-heavy automotive environments. |
Applications
| On-Board Charger (OBC) | Traction Inverter |
|---|---|
Use Scenario: Bidirectional AC/DC and DC/DC conversion in EV charging systems with SiC MOSFETs. IC Role / Device Role / Timing Role: High-side/low-side gate driver for interleaved totem-pole PFC and isolated DC-DC stages. Use Value: 4.0 A drive strength and 100 kV/µs CMTI ensure clean switching at >100 kHz with minimal gate ringing and no false triggering. |
Use Scenario: Driving IGBTs/SiC modules in 3-phase motor inverters for battery electric vehicles. IC Role / Device Role / Timing Role: Isolated complementary gate driver with programmable dead time for each half-bridge leg. Use Value: 1 ms safe startup and fail-safe low-default behavior prevent pre-charge faults and ensure deterministic power-up sequencing. |
| Battery Management System (BMS) | Solar Microinverter |
Use Scenario: Active cell balancing and contactor control in high-voltage battery packs (400–800 V). IC Role / Device Role / Timing Role: Isolated driver for high-side N-channel MOSFET switches in balancing circuits. Use Value: 5 kVRMS isolation and AEC-Q100 qualification enable direct integration into ASIL-B functional safety architectures. |
Use Scenario: Single-phase transformerless grid-tied inverters using H6 or HERIC topologies. IC Role / Device Role / Timing Role: Complementary gate driver for high- and low-side legs with precise dead-time control. Use Value: Deglitch filtering and enhanced UVLO prevent misfiring during rapid irradiance transients and grid fault recovery. |
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 |
|---|---|---|---|
| Si82394BB4-IS1R | 8 V output UVLO threshold; otherwise identical pinout, dead time range, and SOIC-16 NB package. | Better suited for systems using 12–15 V gate drivers where higher UVLO margin is required. | Select when driver supply rails exceed 8 V and tighter UVLO hysteresis is needed to avoid nuisance shutdowns. |
| Si82394CB4-IS1R | 12 V output UVLO threshold; same package, drive strength, and dead time capability. | Targeted at 24 V gate drive systems (e.g., industrial motor drives) requiring maximum UVLO headroom. | Choose for 24 V VDDA/VDDB operation where 12 V UVLO prevents false trips during rail sag under load. |
Compared with SI82394AB4-IS1R, Si82394BB4-IS1R and Si82394CB4-IS1R offer identical isolation, timing, and drive performance but differ in UVLO threshold-enabling precise matching to gate driver supply voltage and system fault tolerance requirements.
Availability
SI82394AB4-IS1R is available at Aetrix Electronics and suitable for on-board chargers, traction inverters, and battery management systems requiring stable component supply, automotive-grade reliability, and long-term lifecycle support.
Supply support for SI82394AB4-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 electronics, emphasizing safety, noise immunity, and long service life over optocoupler-based alternatives.
FAQ
What is the isolation rating of the SI82394AB4-IS1R?
The SI82394AB4-IS1R provides 5 kVRMS isolation withstand voltage per UL 1577 and VDE 0884-10, certified for reinforced insulation in IEC62368-1 and GB4943.1-2011 applications. This rating applies across the full operating temperature range and supports continuous operation in high-voltage motor control and EV power systems where galvanic separation is critical for safety and noise rejection.
Does the SI82394AB4-IS1R support bootstrap gate drive configurations?
No, the SI82394AB4-IS1R does not support bootstrap configurations. Its VDDA and VDDB supplies must be independently generated and regulated because the device relies on separate UVLO monitoring for each driver side. Bootstrap circuits introduce shared supply dependencies that conflict with the SI82394AB4-IS1R's independent UVLO architecture and fail-safe behavior.
How is dead time programmed on the SI82394AB4-IS1R?
Dead time on the SI82394AB4-IS1R is set by an external resistor connected between the DT pin and GND2. A value of 10 kΩ yields ~40 ns, while 150 kΩ yields ~600 ns, covering the full 40–600 ns range. The resistor must be placed close to the IC with short traces to minimize parasitic effects, and its value is validated per Table 1.1 and Figure 2.18 in the datasheet.
What happens to the outputs of the SI82394AB4-IS1R during VDDI power loss?
When VDDI falls below its UVLO threshold, the SI82394AB4-IS1R forces both VOA and VOB low within nanoseconds, regardless of PWM or EN state. This fail-safe behavior is inherent to the silicon isolation architecture and ensures power stage safety during controller-side brownouts-a key requirement in ISO 26262-compliant automotive designs.
Is the SI82394AB4-IS1R pin-compatible with other Si8239x variants?
Yes, the SI82394AB4-IS1R shares identical pinout and footprint with all SOIC-16 narrow-body Si8239x variants (e.g., SI82394BB4-IS1R, SI82394CB4-IS1R), including identical power, ground, PWM, EN, RDY, VDDA, VDDB, VOA, VOB, and NC pin assignments. This allows drop-in substitution when only UVLO threshold differs.
SI82394AB4-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:
- 6.5V ~ 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
SI82394AB4-IS1R FAQ
1.How can I place an order for SI82394AB4-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI82394AB4-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 SI82394AB4-IS1R reliable?
The price and inventory of SI82394AB4-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI82394AB4-IS1R is usually 5 days.
3.What payment methods are accepted for SI82394AB4-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI82394AB4-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI82394AB4-IS1R?
SI82394AB4-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI82394AB4-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 SI82394AB4-IS1R?
For technical support, including SI82394AB4-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI82394AB4-IS1R requirements.
6.How does Aetrix verify that SI82394AB4-IS1R is sourced from the original manufacturer or authorized distributors?
All SI82394AB4-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 SI82394AB4-IS1R meets industry standards.
7.What is the process for return or replacement of SI82394AB4-IS1R?
All SI82394AB4-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI82394AB4-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 SI82394AB4-IS1R part is unused and in its original packaging.
Return procedure for SI82394AB4-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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