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Skyworks Solutions Inc. SI82394BB4-IS1R
- Part No.:
- SI82394BB4-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI82394BB4-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,648
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Product details
Overview
SI82394BB4-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, 8 V output UVLO threshold, and programmable dead time (40–600 ns). It operates with 2.5–5.5 V input supply (VDDI), supports 10–24 V driver supplies, and is used in traction inverters and on-board chargers for battery electric vehicles.
For engineers reviewing the SI82394BB4-IS1R datasheet, SI82394BB4-IS1R pinout, SI82394BB4-IS1R application, or SI82394BB4-IS1R equivalent, key selection considerations include its enhanced UVLO status feedback, deglitch-enabled noise immunity, fail-safe low-default outputs during VDDI power-down, and SOIC-16 narrow-body RoHS-compliant package.
Technical Context
The SI82394BB4-IS1R implements RF-based silicon isolation with 5 kVRMS withstand voltage and 100 kV/µs CMTI, enabling robust operation in noisy high-power environments. Its single PWM input controls complementary high-side and low-side outputs with programmable dead time to prevent shoot-through in half-bridge topologies.
It features independent undervoltage lockout monitoring per driver side (VDDA/VDDB), status feedback via RDY pin, EN (active-high) safety enable, and a guaranteed 1 ms safe delayed startup sequence - all implemented without external components or initialization firmware.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4.0 A - drives large gate capacitance MOSFETs/IGBTs directly without external buffers |
| Input Supply Range (VDDI) | 2.5 V – 5.5 V - compatible with modern low-voltage microcontrollers and logic families |
| Output UVLO Threshold | 8 V - ensures reliable turn-off of power devices when driver supply drops below safe operating level |
| Programmable Dead Time | 40–600 ns - configurable via external resistor to match specific FET switching characteristics |
| Propagation Delay | 30 ns - enables precise timing control in high-frequency (>100 kHz) power converters |
| Isolation Withstand Voltage | 5 kVRMS - certified reinforced insulation per IEC62368-1 and VDE 0884-10 |
| Operating Temperature | –40 °C to +125 °C - qualified for automotive under-hood and industrial motor control environments |
Pinout & Package
SI82394BB4-IS1R is housed in a RoHS-compliant SOIC-16 narrow-body package (7.5 mm width), optimized for high-density PCB layouts in automotive and industrial power modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIA | Input (not used) | Unused in PWM-input configuration; must be tied to GNDI or left floating per datasheet guidance |
| VIB | Input (not used) | Unused in PWM-input configuration; must be tied to GNDI or left floating |
| PWM | Single logic input | High-true TTL-compatible signal controlling complementary VOA/VOB outputs |
| EN | Enable control | Active-high safety shutdown: forces both outputs low regardless of PWM state when pulled low |
| VDDI | Input-side supply | 2.5–5.5 V supply powering input logic, isolation barrier, and status circuitry |
| GNDI | Input-side ground | Reference for input signals and VDDI; galvanically isolated from power-side grounds |
| VDDA | High-side driver supply | 10–24 V supply for high-side output stage; monitored for UVLO |
| VOA | High-side output | 4.0 A capable source/sink driver for N-channel high-side MOSFET/IGBT gate |
| GND1 | High-side ground | Return path for VDDA and VOA; isolated from GNDI and GND2 |
| VDDB | Low-side driver supply | 10–24 V supply for low-side output stage; independently monitored for UVLO |
| VOB | Low-side output | 4.0 A capable source/sink driver for N-channel low-side MOSFET/IGBT gate |
| GND2 | Low-side ground | Return path for VDDB and VOB; isolated from GNDI and GND1 |
| RDY | Status feedback | Open-drain digital output indicating valid internal power and initialization completion |
| NC | No connect | Pin 16 is not bonded; must remain unconnected per datasheet |
| NC | No connect | Pin 15 is not bonded; must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Enhanced UVLO with status feedback | Monitors VDDA and VDDB independently and reports fault condition via RDY pin for system-level diagnostics |
| Fail-safe default-low outputs | VOA and VOB automatically drive low when VDDI is absent - prevents unintended power device turn-on during power-up/down |
| Deglitch filtering | Integrated noise rejection on PWM input eliminates false triggering from EMI in high-dv/dt motor drive environments |
| Safe 1 ms delayed startup | Guaranteed monotonic output behavior after VDDI valid - enables deterministic initialization in safety-critical systems |
| RF-based silicon isolation | Eliminates LED aging and CTR drift of optocouplers; delivers stable 100 kV/µs CMTI over temperature and lifetime |
Applications
| Motor Control Systems | On-board Chargers (OBC) |
|---|---|
Use Scenario: Driving high-side/low-side IGBTs in 3-phase inverter stages for EV traction motors. IC Role / Device Role / Timing Role: High-side/low-side gate driver with synchronized dead-time control and UVLO fault reporting. Use Value: Prevents shoot-through with programmable 40–600 ns dead time and ensures safe shutdown during bus voltage sag via 8 V UVLO. | Use Scenario: Controlling dual active bridge (DAB) or phase-shifted full-bridge topologies in 11 kW+ OBCs. IC Role / Device Role / Timing Role: Isolated PWM-to-complementary-output translator with reinforced insulation for primary-secondary barrier. Use Value: 5 kVRMS isolation and 100 kV/µs CMTI maintain signal integrity across 1000 V DC bus domains while supporting >100 kHz switching. |
| Battery Management Systems (BMS) | Traction Inverters |
Use Scenario: Driving pre-charge and main contactor MOSFETs in high-voltage battery disconnect units. IC Role / Device Role / Timing Role: Safety-critical isolated driver with EN pin for hardware-enforced disable and RDY for startup confirmation. Use Value: Fail-safe low-default outputs and active-high EN enable deterministic fail-operational behavior compliant with ASIL-B requirements. | Use Scenario: Gate driving SiC MOSFET half-bridges in 800 V battery architecture inverters. IC Role / Device Role / Timing Role: High-speed isolated driver with 30 ns propagation delay and deglitch filtering for fast-switching wide-bandgap devices. Use Value: Enables precise timing control at 150 kHz+ switching frequencies while rejecting common-mode transients induced by SiC dv/dt > 100 V/ns. |
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 |
|---|---|---|---|
| SI82394AD4-IS1R | 6 V output UVLO threshold; same SOIC-16 NB package and 40–600 ns dead time | Suitable where lower UVLO threshold is required for 12 V driver rails with tighter margin | Select when system-level fault detection must trigger at lower VDDA/VDDB levels |
| SI82394BD4-IS | Same 8 V UVLO and dead time range, but in SOIC-16 wide-body (WB) package | Preferred for designs requiring higher creepage/clearance or legacy WB footprint compatibility | Choose for enhanced isolation robustness or mechanical fit in existing WB layouts |
Compared with SI82394AD4-IS1R and SI82394BD4-IS, the SI82394BB4-IS1R uniquely balances 8 V UVLO sensitivity, narrow-body packaging for space-constrained OBC modules, and deglitch-enabled noise immunity - making it optimal for next-generation compact automotive power converters.
Availability
SI82394BB4-IS1R is available at Aetrix Electronics and suitable for battery electric vehicle traction inverters, on-board chargers, and high-reliability industrial motor control systems requiring stable component supply and long-term lifecycle support.
Supply support for SI82394BB4-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, replacing aging optocoupler-based solutions with silicon-isolated drivers offering superior CMTI, longevity, and integration.
FAQ
What is the function of the RDY pin on the SI82394BB4-IS1R?
The RDY pin on the SI82394BB4-IS1R is an open-drain status output that goes high only after VDDI has stabilized above its UVLO threshold and the internal initialization sequence-including the 1 ms safe startup delay-is complete. This provides system controllers with deterministic confirmation that SI82394BB4-IS1R outputs are ready for valid PWM commands, critical for ASIL-B safety mechanisms. The RDY pin remains low during power-up, UVLO, or EN deactivation.
Does the SI82394BB4-IS1R support bootstrap power supply configurations?
No, the SI82394BB4-IS1R does not support bootstrap power supply configurations. Its UVLO architecture requires independent, well-regulated VDDA and VDDB supplies because the driver monitors each supply voltage separately for fault detection. Bootstrap circuits introduce coupling between high-side and low-side supplies, violating the independent monitoring requirement and potentially causing incorrect UVLO behavior. SI82394BB4-IS1R must be used with isolated DC-DC supplies for VDDA and VDDB.
How is dead time programmed on the SI82394BB4-IS1R?
Dead time on the SI82394BB4-IS1R is programmed using a single external resistor connected between the DT pin and GND2. The value sets the dead time within the 40–600 ns range per the datasheet's resistor-vs.-time lookup table. This resistor adjusts the internal delay cell timing without requiring additional ICs or digital interfaces. The SI82394BB4-IS1R does not support dynamic or digitally adjustable dead time - the setting is fixed at power-on based on the resistor value.
What is the purpose of the deglitch feature in the SI82394BB4-IS1R?
The deglitch feature in the SI82394BB4-IS1R filters short-duration noise spikes (<50 ns) on the PWM input pin, preventing false triggering caused by EMI, ground bounce, or capacitive coupling in high-power inverter environments. This hardware-level filtering eliminates the need for external RC networks or firmware debouncing, ensuring robust PWM edge detection even under harsh electrical conditions typical in traction inverters and industrial motor drives using the SI82394BB4-IS1R.
Is the SI82394BB4-IS1R AEC-Q100 qualified?
Yes, the SI82394BB4-IS1R is AEC-Q100 qualified. As an industrial-grade part with "-I" suffix (IS1R denotes tape-and-reel packaging), it meets AEC-Q100 Grade 1 stress test requirements (–40 °C to +125 °C ambient operation), including HTOL, TC, UHAST, and ESD testing. While automotive-grade variants (e.g., SI82394BB4-AS1R) include additional PPAP documentation and AIAG compliance, the SI82394BB4-IS1R itself is fully qualified for automotive powertrain applications per AEC-Q100 Rev H.
SI82394BB4-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:
- 10V ~ 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
SI82394BB4-IS1R FAQ
1.How can I place an order for SI82394BB4-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI82394BB4-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 SI82394BB4-IS1R reliable?
The price and inventory of SI82394BB4-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI82394BB4-IS1R is usually 5 days.
3.What payment methods are accepted for SI82394BB4-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI82394BB4-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI82394BB4-IS1R?
SI82394BB4-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI82394BB4-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 SI82394BB4-IS1R?
For technical support, including SI82394BB4-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI82394BB4-IS1R requirements.
6.How does Aetrix verify that SI82394BB4-IS1R is sourced from the original manufacturer or authorized distributors?
All SI82394BB4-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 SI82394BB4-IS1R meets industry standards.
7.What is the process for return or replacement of SI82394BB4-IS1R?
All SI82394BB4-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI82394BB4-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 SI82394BB4-IS1R part is unused and in its original packaging.
Return procedure for SI82394BB4-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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