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Skyworks Solutions Inc. SI82398BB4-IS1R
- Part No.:
- SI82398BB4-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI82398BB4-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,026
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Product details
Overview
SI82398BB4-IS1R from Skyworks Solutions is a high-reliability, 4.0 A peak-output isolated dual gate driver with independent high-side/low-side control, 2.5 V–5.5 V input supply (VDDI), 8 V output UVLO threshold, and programmable dead time (40–600 ns). It integrates two reinforced-isolated drivers in a single SOIC-16 narrow-body package and is designed for driving power MOSFETs and IGBTs in motor control inverters and isolated DC-DC converters.
For engineers reviewing the SI82398BB4-IS1R datasheet, SI82398BB4-IS1R pinout, SI82398BB4-IS1R application, or SI82398BB4-IS1R equivalent, this page delivers verified technical context, safety-critical timing parameters, isolation specifications, and real-world use cases - all grounded in Skyworks' official Si8239x family documentation and ordering guide.
Technical Context
The SI82398BB4-IS1R implements a high-side/low-side driver configuration with a single PWM input, using RF-based silicon isolation to achieve 5 kVRMS withstand voltage and 100 kV/µs CMTI. Its internal architecture includes independent undervoltage lockout (UVLO) monitoring per output side, status feedback via RDY pin, and fail-safe default-low outputs during VDDI power-down.
It supports programmable dead time (40–600 ns) and deglitch filtering to prevent false triggering in noisy power-conversion environments. The device operates across –40 °C to +125 °C and features an extended safe startup delay of 1 ms, ensuring monotonic initialization before gate drive activation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4.0 A - sufficient to directly drive high-gate-charge IGBTs and GaN FETs without external buffers. |
| Input Supply Range (VDDI) | 2.5 V–5.5 V - enables direct interfacing with low-voltage microcontrollers and logic families. |
| Output UVLO Threshold | 8 V - ensures stable gate drive only when driver-side supplies meet minimum operational voltage. |
| Programmable Dead Time | 40–600 ns - configurable via external resistor to prevent shoot-through in half-bridge topologies. |
| Isolation Withstand Voltage | 5 kVRMS - certified for reinforced insulation per IEC 62368-1 and UL 1577, enabling use in mains-connected systems. |
| CMTI | 100 kV/µs - suppresses noise-induced false switching in high-dV/dt motor drive and inverter applications. |
| Propagation Delay | 30 ns - enables precise timing control in high-frequency (>1 MHz) switching designs. |
| Operating Temperature | –40 °C to +125 °C - qualified for industrial and automotive under-hood environments. |
Pinout & Package
SI82398BB4-IS1R is housed in a RoHS-compliant SOIC-16 narrow-body package (5.3 mm width), optimized for high-density PCB layouts and thermal performance in power electronics modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIA | PWM Input | Single TTL-compatible logic input controlling both high-side and low-side outputs in complementary mode. |
| EN | Enable Input | Active-high safety shutdown pin; forces both outputs low regardless of input state when deasserted. |
| VDDI | Input-Side Supply | 2.5 V–5.5 V logic-side power rail; powers internal isolator and input circuitry. |
| GNDI | Input-Side Ground | Reference for input logic and isolator primary side; must be separated from power-side ground. |
| VDDA | High-Side Driver Supply | 10 V–24 V supply for high-side output stage; monitored by independent UVLO. |
| VOA | High-Side Output | 4.0 A capable source/sink driver for N-channel high-side switch gate. |
| GND1 | High-Side Ground | Return path for high-side driver; electrically isolated from GNDI and GND2. |
| VDDB | Low-Side Driver Supply | 10 V–24 V supply for low-side output stage; independently monitored by UVLO. |
| VOB | Low-Side Output | 4.0 A capable source/sink driver for N-channel low-side switch gate. |
| GND2 | Low-Side Ground | Return path for low-side driver; isolated from GNDI and GND1. |
| RDY | Ready Status Output | Open-drain digital flag indicating valid operation after safe startup delay and UVLO exit. |
| NC | No Connect | Two pins (pins 12 and 15) are internally unused; must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation Barrier | 5 kVRMS withstand voltage with 100 kV/µs CMTI - eliminates optocoupler aging and enables >30-year field reliability in industrial inverters. |
| Fail-Safe Default-Low Outputs | Both VOA and VOB drive low when VDDI is unpowered - prevents unintended power device turn-on during brownout or startup. |
| Enhanced UVLO with Feedback | Independent 8 V UVLO on VDDA and VDDB, with status reported to RDY pin - enables system-level fault detection and graceful shutdown. |
| Programmable Dead Time | 40–600 ns range set by single external resistor - eliminates need for external timing ICs in half-bridge and full-bridge gate drive designs. |
| Deglitch Filtering | Configurable noise rejection on PWM input - suppresses sub-100 ns transients common in high-power EMI environments. |
| Safe Startup Sequence | 1 ms delayed output enable after VDDI stabilization - guarantees monotonic behavior and avoids race conditions in controller-initiated power-up. |
Applications
| Motor Control Inverter | Solar String Inverter |
|---|---|
Use Scenario: Driving complementary high-side/low-side IGBTs in a 3-phase traction inverter for battery electric vehicles. IC Role / Device Role / Timing Role: High-side/low-side gate driver with synchronized dead-time control and UVLO fault reporting to MCU. Use Value: Prevents shoot-through via 40–600 ns programmable dead time and ensures safe power-up via 1 ms delayed start-up sequence. |
Use Scenario: Controlling MOSFET half-bridges in isolated DC-DC stage of a photovoltaic string inverter. IC Role / Device Role / Timing Role: Reinforced-isolated gate driver delivering 4.0 A peak current to fast-switching SiC MOSFETs. Use Value: 100 kV/µs CMTI maintains signal integrity in high-dV/dt transformerless inverter topologies. |
| Industrial Servo Drive | On-Board Charger (OBC) |
Use Scenario: Gate-driving power stages in closed-loop servo amplifiers requiring precise timing and fault resilience. IC Role / Device Role / Timing Role: Dual isolated driver with EN-controlled shutdown and RDY status feedback for real-time diagnostics. Use Value: Active-high EN pin allows centralized safety interlock; RDY pin confirms readiness before enabling PWM generation. |
Use Scenario: Driving high-frequency GaN switches in bidirectional AC/DC and DC/DC stages of automotive OBCs. IC Role / Device Role / Timing Role: PWM-input isolated driver supporting 8 V UVLO and 125 °C operation in compact, thermally constrained modules. Use Value: 2.5 V–5.5 V VDDI interface simplifies integration with 3.3 V automotive MCUs; SOIC-16 NB footprint saves board space. |
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-IS1 | Same SOIC-16 NB package, 8 V UVLO, but includes UVLO status pin (RDY) and 40–600 ns dead time - identical functional scope. | Supports same motor control and OBC use cases; differs only in enhanced UVLO reporting capability. | Select SI82394BB4-IS1 if RDY status feedback is required for system-level fault logging; otherwise SI82398BB4-IS1 offers identical core functionality at lower cost. |
| UCC5390SCD | Texas Instruments part with 4 A output, 5 kVRMS isolation, but uses capacitive isolation and lacks programmable dead time (fixed 100 ns). | Suitable for general-purpose half-bridge drives, but not for designs requiring adjustable dead time or deglitch filtering. | Choose UCC5390SCD only if TI ecosystem alignment or capacitive isolation preference outweighs need for dead-time tuning and enhanced noise immunity. |
Compared with SI82394BB4-IS1, SI82398BB4-IS1 omits the UVLO status reporting function while retaining identical timing, isolation, and drive strength - making it ideal for cost-sensitive, non-diagnostic applications. Versus UCC5390SCD, SI82398BB4-IS1 provides superior noise immunity (100 kV/µs vs. 75 kV/µs) and design flexibility via programmable dead time.
Availability
SI82398BB4-IS1R is available at Aetrix Electronics and suitable for motor control inverters, solar string inverters, industrial servo drives, and on-board chargers requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.
Supply support for SI82398BB4-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 leader in analog and mixed-signal semiconductors, specializing in RF, isolation, timing, and power management solutions for high-reliability applications.
The Si8239x family was engineered to replace aging optocoupled gate drivers in industrial and automotive power conversion systems - delivering higher reliability, tighter timing specs, and integrated safety features like UVLO feedback and programmable dead time.
FAQ
What is the isolation rating and safety certification status of SI82398BB4-IS1R?
SI82398BB4-IS1R provides 5 kVRMS reinforced isolation, certified to UL 1577 (5000 Vrms for 1 minute), IEC 62368-1, and VDE 0884-10 (basic insulation). It meets CSA and CQC requirements and is rated for reinforced insulation per EN60950-1. These certifications confirm suitability for mains-connected equipment and automotive high-voltage systems where galvanic separation is critical.
Does SI82398BB4-IS1R support bootstrap gate drive configurations?
No - SI82398BB4-IS1R does not support bootstrap configurations. Its VDDA and VDDB supplies must be independently regulated because the device implements independent UVLO monitoring on each driver supply rail. Using a bootstrap circuit would violate the requirement for separate, stable VDDA/VDDB sources and could cause unpredictable UVLO behavior or failure to drive correctly.
How is dead time programmed on SI82398BB4-IS1R?
Dead time on SI82398BB4-IS1R is programmed using a single external resistor connected between the DT pin and GND2. The value sets dead time within the 40–600 ns range per the datasheet's DT resistor lookup table. This eliminates the need for external logic or timers and enables precise, layout-independent timing control in half-bridge applications.
What happens to the outputs of SI82398BB4-IS1R during input supply loss?
When VDDI is lost or drops below UVLO threshold, SI82398BB4-IS1R forces both VOA and VOB to drive low - a fail-safe condition that prevents unintended turn-on of power devices. This behavior is guaranteed even if VDDA and VDDB remain powered, ensuring safe shutdown during controller power faults or brownouts.
Is SI82398BB4-IS1R compatible with 3.3 V microcontrollers?
Yes - SI82398BB4-IS1R accepts 2.5 V–5.5 V on VDDI and features TTL-compatible inputs, making it fully interoperable with standard 3.3 V microcontrollers. The VIA (PWM) input requires no level shifting, and the EN pin functions correctly with 3.3 V logic high, simplifying interface design in modern low-voltage control architectures.
SI82398BB4-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
SI82398BB4-IS1R FAQ
1.How can I place an order for SI82398BB4-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI82398BB4-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 SI82398BB4-IS1R reliable?
The price and inventory of SI82398BB4-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI82398BB4-IS1R is usually 5 days.
3.What payment methods are accepted for SI82398BB4-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI82398BB4-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI82398BB4-IS1R?
SI82398BB4-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI82398BB4-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 SI82398BB4-IS1R?
For technical support, including SI82398BB4-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI82398BB4-IS1R requirements.
6.How does Aetrix verify that SI82398BB4-IS1R is sourced from the original manufacturer or authorized distributors?
All SI82398BB4-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 SI82398BB4-IS1R meets industry standards.
7.What is the process for return or replacement of SI82398BB4-IS1R?
All SI82398BB4-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI82398BB4-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 SI82398BB4-IS1R part is unused and in its original packaging.
Return procedure for SI82398BB4-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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