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Skyworks Solutions Inc. SI82398BD4-ISR
- Part No.:
- SI82398BD4-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI82398BD4-ISR.pdf
- Description:
- DGTL ISO 5KV 2CH GATE DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,890
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Product details
Overview
SI82398BD4-ISR from Skyworks Solutions is a dual-channel isolated gate driver IC designed for high-side/low-side MOSFET/IGBT control in power converters and motor drives. It delivers 4.0 A peak output current, operates with 2.5–5.5 V input supply (VDDI), supports 40–600 ns programmable dead time, includes deglitch filtering, and features enhanced UVLO with status feedback. It is used in traction inverters and on-board chargers requiring reinforced isolation and fail-safe operation.
For engineers reviewing the SI82398BD4-ISR datasheet, SI82398BD4-ISR pinout, SI82398BD4-ISR application, or SI82398BD4-ISR equivalent, key selection criteria include its SOIC-16 wide-body package, 8 V output UVLO threshold, active-high EN pin, 1 ms safe startup delay, and compatibility with high-CMTI (>100 kV/µs) noise environments in automotive-grade power systems.
Technical Context
The SI82398BD4-ISR implements a single-PWM-input, high-side/low-side driver architecture using RF-based silicon isolation. Its internal RF transmitter modulates input signals via on/off keying across a 5 kVRMS isolation barrier, enabling robust noise immunity without optical degradation or LED aging concerns.
It integrates independent undervoltage lockout (UVLO) monitoring per output channel (VDDA/VDDB), automatic low-default outputs during VDDI power-down, and deglitch-enabled input filtering to suppress transient noise. The 40–600 ns programmable dead time prevents shoot-through in half-bridge topologies without external timing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS withstand voltage - enables reinforced insulation per IEC62368-1 and UL 1577 for safety-critical automotive and industrial power stages. |
| Output Drive Current | 4.0 A peak sink/source - directly drives high-gate-charge SiC MOSFETs and IGBTs without external buffers in 10–24 V driver supply range. |
| Input Supply Range | VDDI = 2.5–5.5 V - compatible with modern low-voltage microcontrollers and ASIL-B domain controllers without level-shifting. |
| UVLO Threshold | 8 V on VDDA/VDDB - ensures reliable turn-off before gate drive collapse in high-voltage power stages (e.g., 12 V bootstrap rails). |
| Propagation Delay | 30 ns typical - enables precise timing control in >100 kHz switching applications such as EV traction inverters and fast DC-DC converters. |
| Common-Mode Transient Immunity | 100 kV/µs - maintains signal integrity in high-dV/dt environments like motor phase-leg switching and isolated DC-DC primary-side control. |
| Dead Time Range | 40–600 ns programmable - eliminates need for external RC networks while supporting tight timing margins in SiC-based half-bridges. |
| Operating Temperature | –40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood automotive applications including on-board chargers and battery management systems. |
Pinout & Package
SI82398BD4-ISR is housed in a RoHS-compliant SOIC-16 wide-body package (7.5 mm body width, 10.3 mm length) with creepage/clearance optimized for reinforced insulation. Pin assignments are validated per Skyworks' official pin description table (Section 6, Si8239x Data Sheet Rev. 206709A).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIA | Input-side ground reference | Input-side GND for logic interface; must be connected to controller ground plane with low-inductance path. |
| VIB | Input-side power supply | 2.5–5.5 V supply for input logic and isolation barrier; requires local 1 µF + 0.1 µF decoupling. |
| PWM | Single logic input | TTL-compatible PWM signal controlling complementary high-side/low-side outputs (VOA/VOB). |
| EN | Enable control | Active-high enable; must be pulled down via 100 kΩ resistor to GNDI when unused to ensure fail-safe disable. |
| GND1 | Driver-side ground 1 | Ground return for high-side driver (VOA); isolated from input side and tied to high-side source node. |
| VDDA | High-side driver supply | 10–24 V supply for high-side output stage; monitored for 8 V UVLO with status feedback capability. |
| VOA | High-side gate output | 4.0 A capable push-pull output driving high-side MOSFET/IGBT gate; defaults low during UVLO or EN deassertion. |
| RDY | Ready status indicator | Open-drain digital output signaling valid operation after 1 ms safe startup delay; pulled up externally to VDDA. |
| GND2 | Driver-side ground 2 | Ground return for low-side driver (VOB); isolated from GND1 and tied to low-side source/emitter node. |
| VDDB | Low-side driver supply | 10–24 V supply for low-side output stage; independently monitored for 8 V UVLO with fault reporting. |
| VOB | Low-side gate output | 4.0 A capable push-pull output driving low-side device; complements VOA state with programmable dead time. |
| NC | No-connect | Internally unused pin; must remain unconnected per datasheet layout guidelines to maintain isolation integrity. |
| NC | No-connect | Internally unused pin; left floating to preserve creepage distance and avoid unintended coupling paths. |
| NC | No-connect | Internally unused pin; no PCB trace or solder connection permitted to ensure isolation barrier reliability. |
| NC | No-connect | Internally unused pin; omitted from schematic symbol and layout to prevent accidental routing errors. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable dead time | 40–600 ns range set via external resistor - eliminates shoot-through risk in SiC/GaN half-bridges without discrete timing circuits. |
| Deglitch filtering | Configurable noise suppression on PWM input - rejects sub-100 ns transients common in high-power EMI environments. |
| Enhanced UVLO with status feedback | Independent 8 V UVLO per driver rail plus RDY pin assertion - enables real-time health monitoring of both VDDA and VDDB supplies. |
| Fail-safe default-low outputs | VOA/VOB forced low during VDDI power loss or EN deassertion - prevents unintended power device turn-on in fault conditions. |
| Safe delayed startup | 1 ms monotonic initialization sequence - guarantees stable outputs only after all internal regulators and isolation barriers are fully powered. |
| AEC-Q100 qualified | Grade 1 (–40 °C to +125 °C) qualification - meets automotive reliability requirements for on-board chargers and traction inverters. |
Applications
| On-Board Charger (OBC) | Traction Inverter |
|---|---|
|
Use Scenario: Bidirectional AC/DC and DC/DC conversion in EV charging systems with 400 V–800 V battery interfaces. IC Role / Device Role / Timing Role: High-side/low-side gate driver for interleaved totem-pole PFC and isolated DC-DC stages, enforcing precise dead time to prevent shoot-through at 100+ kHz switching. Use Value: 4.0 A drive strength enables direct SiC MOSFET control; 100 kV/µs CMTI ensures stable operation amid high dV/dt from fast-switching power devices. |
Use Scenario: Motor phase-leg control in battery electric vehicle (BEV) inverters delivering >150 kW output power. IC Role / Device Role / Timing Role: Isolated gate driver for high-side/low-side IGBTs or SiC modules, providing fail-safe shutdown during bus overvoltage or thermal faults. Use Value: Enhanced UVLO with independent VDDA/VDDB monitoring detects bootstrap supply collapse before gate drive failure, preventing shoot-through damage. |
| Battery Management System (BMS) | Solar Inverter |
|
Use Scenario: Active cell balancing and contactor control in high-voltage battery packs (≥400 V) with functional safety requirements. IC Role / Device Role / Timing Role: Isolated driver for high-side N-channel MOSFET switches in active balancing circuits, controlled by MCU via single PWM line. Use Value: SOIC-16 WB package provides 8.3 mm creepage for reinforced insulation; AEC-Q100 qualification supports ASIL-B system-level compliance. |
Use Scenario: Transformerless string inverters operating at 1000 V DC input with galvanic isolation between PV array and grid interface. IC Role / Device Role / Timing Role: Gate driver for high-frequency H-bridge in DC-AC conversion stage, requiring tight dead-time control and high-noise immunity. Use Value: 5 kVRMS isolation rating satisfies IEC62109 and UL1741 safety standards; deglitch filtering suppresses EMI from nearby lightning surge protectors. |
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 |
|---|---|---|---|
| Si82394BD4-IS | Same SOIC-16 WB package, 8 V UVLO, 40–600 ns dead time, but lacks RDY pin and uses 6 V UVLO threshold. | Targeted at cost-sensitive industrial inverters where ready-status feedback is not required for system diagnostics. | Select SI82398BD4-ISR when RDY-driven fault logging or AEC-Q100 Grade 1 qualification is mandatory for automotive deployment. |
| UCC5390SCD | Texas Instruments part with 4 A drive, 5.7 kVRMS isolation, but fixed 120 ns dead time and no deglitch option. | Used in industrial motor drives where programmable dead time is unnecessary and TI ecosystem integration is prioritized. | Choose SI82398BD4-ISR for designs requiring field-adjustable dead time, enhanced UVLO status reporting, or higher CMTI (100 vs. 75 kV/µs). |
Compared with Si82394BD4-IS and UCC5390SCD, SI82398BD4-ISR uniquely combines AEC-Q100 Grade 1 qualification, RDY status feedback, and 40–600 ns programmable dead time - making it optimal for automotive OBC and traction inverter designs demanding diagnostic visibility and timing flexibility.
Availability
SI82398BD4-ISR is available at Aetrix Electronics and suitable for on-board chargers, traction inverters, and battery management systems requiring stable component supply, long-term lifecycle support, and automotive-grade reliability assurance.
Supply support for SI82398BD4-ISR 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 engineered specifically for high-reliability isolated gate driving in automotive and industrial power electronics, leveraging proprietary RF-based silicon isolation to replace aging optocoupler-based solutions.
FAQ
What is the UVLO threshold for SI82398BD4-ISR?
The SI82398BD4-ISR features an 8 V undervoltage lockout (UVLO) threshold on both VDDA and VDDB driver supplies. When either supply drops below 8 V, the corresponding output (VOA or VOB) is actively driven low to prevent partial gate drive and potential shoot-through. This threshold is factory-trimmed and specified across temperature and process variation per the Si8239x datasheet Section 4.1.
Does SI82398BD4-ISR support bootstrap power configurations?
No - SI82398BD4-ISR does not support bootstrap power for VDDA. Its enhanced UVLO architecture requires independent, well-regulated 10–24 V supplies for VDDA and VDDB. Using a bootstrap circuit risks violating the independent supply requirement and may cause undefined behavior or failure to meet AEC-Q100 stress test conditions. SI82398BD4-ISR is intended for use with isolated DC-DC converters or dedicated low-dropout regulators.
How is dead time programmed on SI82398BD4-ISR?
Dead time on SI82398BD4-ISR is programmed via an external resistor (RDT) connected between the DT pin and GND2. The value sets dead time within a 40–600 ns range per the formula in datasheet Figure 2.18. For example, a 100 kΩ resistor yields ~200 ns. RDT must be placed close to the IC with short traces to minimize noise coupling, and no capacitor is required - unlike traditional RC-based dead-time generators.
What is the role of the RDY pin on SI82398BD4-ISR?
The RDY pin on SI82398BD4-ISR is an open-drain status output that goes high (pulled up externally to VDDA) only after the 1 ms safe startup delay completes and both VDDA and VDDB are above their UVLO thresholds. It provides hardware-verified readiness for the host controller to begin PWM modulation - critical for functional safety in ASIL-B systems. SI82398BD4-ISR asserts RDY only when all internal regulators and isolation channels are fully operational.
Is SI82398BD4-ISR pin-compatible with other Si8239x variants?
Yes - SI82398BD4-ISR shares identical pinout and footprint with all SOIC-16 wide-body Si8239x drivers (e.g., SI82394BD4-IS, SI82398BD-IS). However, functional differences exist: SI82398BD4-ISR includes deglitch filtering and 40–600 ns dead time, whereas SI82398BD-IS offers 10–200 ns dead time and no deglitch. Board-level substitution is possible only if the target application matches the specific feature set of SI82398BD4-ISR.
SI82398BD4-ISR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Number of Channels:
- 2
- Voltage - Isolation:
- 5000Vrms
- 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
SI82398BD4-ISR FAQ
1.How can I place an order for SI82398BD4-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI82398BD4-ISR 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 SI82398BD4-ISR reliable?
The price and inventory of SI82398BD4-ISR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI82398BD4-ISR is usually 5 days.
3.What payment methods are accepted for SI82398BD4-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI82398BD4-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI82398BD4-ISR?
SI82398BD4-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI82398BD4-ISR 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 SI82398BD4-ISR?
For technical support, including SI82398BD4-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI82398BD4-ISR requirements.
6.How does Aetrix verify that SI82398BD4-ISR is sourced from the original manufacturer or authorized distributors?
All SI82398BD4-ISR 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 SI82398BD4-ISR meets industry standards.
7.What is the process for return or replacement of SI82398BD4-ISR?
All SI82398BD4-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI82398BD4-ISR, 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 SI82398BD4-ISR part is unused and in its original packaging.
Return procedure for SI82398BD4-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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