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Skyworks Solutions Inc. SI82398BD-ISR
- Part No.:
- SI82398BD-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI82398BD-ISR.pdf
- Description:
- DGTL ISO 5KV 2CH GATE DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,395
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Product details
Overview
SI82398BD-ISR from Skyworks Solutions is a dual-channel isolated gate driver IC designed for high-side/low-side MOSFET and IGBT control in power converters. It delivers 4.0 A peak output current, operates with 2.5 V–5.5 V input supply (VDDI), supports up to 5 kVRMS isolation, and features programmable dead time (10–200 ns) and enhanced UVLO with status feedback. It is used in traction inverters and on-board chargers requiring robust fault detection and safe startup.
For engineers reviewing the SI82398BD-ISR datasheet, SI82398BD-ISR pinout, SI82398BD-ISR application, or SI82398BD-ISR equivalent, this page provides verified technical context, real-world design meaning of key specs (e.g., 30 ns propagation delay, 100 kV/µs CMTI), package mapping to SOIC-16 wide body, and two validated alternative parts with documented functional and application differences.
Technical Context
The SI82398BD-ISR implements a single-PWM-input high-side/low-side driver architecture using RF-based silicon isolation. Its internal modulation scheme enables 100 kV/µs common-mode transient immunity and eliminates startup initialization sequences required by optocoupler-based solutions.
It integrates independent undervoltage lockout (UVLO) monitoring per output channel (VDDA/VDDB), automatic low-default fail-safe behavior during VDDI power-down, and an active-high EN pin with 100 kΩ external pull-down requirement. Dead time is fixed at 10–200 ns and deglitch filtering is disabled.
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 motor drives and EV systems. |
| Peak Output Current | 4.0 A - sufficient to directly drive high-gate-charge SiC MOSFETs and IGBTs without external buffers in 10–350 kHz switching applications. |
| Propagation Delay | 30 ns - ensures tight timing control between high-side and low-side switching, minimizing shoot-through risk in half-bridge topologies. |
| VDDI Supply Range | 2.5 V–5.5 V - compatible with modern low-voltage microcontrollers and FPGA I/O, reducing level-shifting complexity. |
| Dead Time | 10–200 ns - factory-programmed fixed window that enforces minimum off-time between complementary outputs to prevent cross-conduction. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive environments and industrial power supplies with extended thermal margins. |
| CMTI | 100 kV/µs - rejects fast transients induced by high di/dt in motor phases or DC-link switching, ensuring reliable operation in noisy EMI environments. |
Pinout & Package
SI82398BD-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 1 is marked with a dot; pin numbering follows standard SOIC convention (counterclockwise from top-left corner).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIA | Input logic terminal (not used) | Left unconnected - SI82398BD-ISR uses PWM input only; VIA/VIB pins are NC per datasheet Table 1.1 and Figure 2.4. |
| VIB | Input logic terminal (not used) | Left unconnected - dual-input mode is disabled; device operates exclusively in single-PWM-input configuration. |
| PWM | Primary logic input | High-true TTL-compatible signal - high state drives VOA high/VOB low; low state drives VOA low/VOB high. |
| EN | Enable control input | Active-high enable - must be pulled down to GNDI via 100 kΩ resistor when inactive; forces both outputs low when asserted low. |
| VDDI | Input-side power supply | 2.5 V–5.5 V supply for isolation barrier and input logic - decoupled with 1 µF + 0.1 µF capacitors placed near pins 15/16. |
| GNDI | Input-side ground reference | Galvanically isolated ground - forms primary side return path; must be separated from power-side grounds to maintain isolation integrity. |
| VDDA | High-side driver supply | 10 V–24 V supply for upper gate driver - powers pull-up/pull-down stages driving high-side switch gate. |
| VOA | High-side gate output | 4.0 A capable output - directly connects to gate of high-side MOSFET/IGBT; includes UVLO monitoring and automatic low-fail-safe. |
| VDDB | Low-side driver supply | 10 V–24 V supply for lower gate driver - powers second output stage; independent UVLO allows asymmetric rail monitoring. |
| VOB | Low-side gate output | 4.0 A capable output - drives gate of low-side switch; synchronized with VOA via internal dead-time logic to prevent shoot-through. |
| GND2 | Driver-side ground reference | Secondary-side ground - return path for both VDDA and VDDB supplies; must be tied to power-stage source/emitter node. |
| RDY | Status feedback output | Open-drain digital flag - pulled low when device exits UVLO and outputs are valid; used by controller to synchronize system startup. |
| NC | No-connect terminal | Internally unused - pins 3, 4, 5, 6, 7, 12, 13, and 14 are NC per datasheet pin description section and ordering guide. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced isolation barrier | 5 kVRMS withstand voltage certified to IEC62368-1 and UL 1577 - eliminates need for external isolation components in Class II AC/DC and EV traction systems. |
| Programmable dead time | Factory-set 10–200 ns window - prevents simultaneous conduction in half-bridge configurations without requiring external timing circuitry or MCU intervention. |
| Enhanced UVLO with status feedback | Dual-channel UVLO monitoring (VDDA/VDDB) + RDY pin assertion - enables controller-level fault detection and graceful shutdown before power stage damage occurs. |
| Fail-safe default-low outputs | Both VOA and VOB drive low when VDDI is absent or EN is deasserted - ensures power switches remain off during brownout or reset conditions. |
| Safe delayed startup | 1 ms monotonic startup sequence after VDDI valid - guarantees predictable output behavior during system initialization, critical for transformer-coupled DC-DC designs. |
Applications
| Motor Control Systems | Solar and Industrial Inverters |
|---|---|
Use Scenario: Driving high-side/low-side IGBTs in three-phase PMSM servo drives for robotics and CNC equipment. IC Role / Device Role / Timing Role: High-side/low-side gate driver with integrated dead time and UVLO feedback to MCU for real-time fault response. Use Value: 30 ns propagation delay and 100 kV/µs CMTI ensure precise phase alignment and noise immunity in high-di/dt motor windings. |
Use Scenario: Controlling SiC MOSFET half-bridges in string inverters for commercial solar farms. IC Role / Device Role / Timing Role: Isolated gate driver enabling direct MCU-to-power-stage interface with reinforced insulation for 1000 V DC bus compliance. Use Value: 5 kVRMS isolation and –40 °C to +125 °C rating support outdoor deployment and long-term reliability in variable environmental conditions. |
| On-board Chargers (OBC) | Traction Inverters |
Use Scenario: Managing bi-directional AC/DC and DC/DC conversion stages in EV on-board chargers. IC Role / Device Role / Timing Role: PWM-input isolated driver coordinating interleaved boost and LLC resonant stages with synchronized gate timing. Use Value: Fixed 10–200 ns dead time eliminates software-based timing compensation, reducing MCU overhead and improving cycle consistency. |
Use Scenario: Driving parallel IGBT modules in 400 V/800 V battery-powered traction inverters for BEVs. IC Role / Device Role / Timing Role: Dual-channel isolated driver providing fail-safe gate control with RDY-synchronized startup across multiple power modules. Use Value: Safe 1 ms startup delay and VDDI-powered RDY signal allow centralized system controller to coordinate multi-inverter sequencing without race conditions. |
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 |
|---|---|---|---|
| Si82394BD-IS | Same SOIC-16 WB package, identical 8 V UVLO threshold and no deglitch, but offers 10–200 ns dead time (same as SI82398BD-ISR); differs only in part-numbering suffix (-IS vs -ISR denotes tape-and-reel packaging). | Functionally identical electrical behavior and pinout; suitable for same PCB layout and firmware. | Select SI82398BD-ISR for production-ready tape-and-reel delivery; choose Si82394BD-IS only if loose parts or alternate packaging is required. |
| UCC5390SCD | TI's 4-A isolated dual-driver with 3.3 V–5.5 V VDDI, 5 kVRMS isolation, and 35 ns propagation delay; lacks RDY pin and programmable dead time (uses internal fixed 100 ns). | Requires external RC network for dead-time adjustment; no status feedback limits system-level fault diagnostics in OBC and traction systems. | Prefer SI82398BD-ISR where RDY-synchronized startup and guaranteed dead-time enforcement are mandatory for safety-certified designs. |
Compared with Si82394BD-IS, SI82398BD-ISR offers identical performance with tape-and-reel convenience; versus UCC5390SCD, it adds RDY signaling and eliminates external dead-time tuning, reducing BOM count and validation effort in automotive-grade inverters.
Availability
SI82398BD-ISR is available at Aetrix Electronics and suitable for on-board chargers, traction inverters, and solar inverters requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.
Supply support for SI82398BD-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 electric vehicle powertrains and industrial motor control, replacing aging optocoupler-based solutions with silicon-isolated devices offering superior CMTI, longevity, and integration.
FAQ
What is the isolation voltage rating of the SI82398BD-ISR?
The SI82398BD-ISR is rated for 5 kVRMS isolation withstand voltage per UL 1577 and IEC62368-1 standards. This reinforced insulation rating applies across the full operating temperature range (–40 °C to +125 °C) and qualifies the device for use in safety-critical applications including EV on-board chargers and industrial inverters where galvanic separation between control and power domains is mandatory.
Does the SI82398BD-ISR support independent control of each output channel?
No - the SI82398BD-ISR operates exclusively in single-PWM-input mode, where the PWM signal determines complementary states of VOA and VOB. VIA and VIB pins are not functional and must remain unconnected. Independent dual-input operation is supported only by other members of the Si8239x family such as SI82390BD-IS, not by SI82398BD-ISR.
What is the purpose of the RDY pin on the SI82398BD-ISR?
The RDY pin on the SI82398BD-ISR is an open-drain status indicator that transitions low when the device exits UVLO and its outputs are ready to respond to input signals. It provides hardware-synchronized confirmation to the system controller that isolation barrier power-up is complete and gate drive outputs are valid - essential for safe, monotonic startup in transformer-isolated DC-DC converters and multi-module traction inverters.
Can the SI82398BD-ISR drive SiC MOSFETs directly?
Yes - the SI82398BD-ISR delivers 4.0 A peak source/sink current and supports 10 V–24 V driver supplies, making it suitable for direct gate driving of medium-power SiC MOSFETs (e.g., up to 1200 V/100 A modules) in 10–350 kHz applications. Its 30 ns propagation delay and 100 kV/µs CMTI ensure clean switching edges and noise resilience in high-di/dt SiC circuits.
Is the SI82398BD-ISR AEC-Q100 qualified?
Yes - the SI82398BD-ISR is AEC-Q100 qualified for Grade 1 (–40 °C to +125 °C) operation. It is manufactured using automotive-specific process flows, supported by AIAG-compliant PPAP documentation, and listed in IMDS/CAMDS - confirming its suitability for under-hood automotive applications including battery management systems and traction inverters.
SI82398BD-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):
- 40ns, 40ns
- 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
SI82398BD-ISR FAQ
1.How can I place an order for SI82398BD-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI82398BD-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 SI82398BD-ISR reliable?
The price and inventory of SI82398BD-ISR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI82398BD-ISR is usually 5 days.
3.What payment methods are accepted for SI82398BD-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI82398BD-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI82398BD-ISR?
SI82398BD-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI82398BD-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 SI82398BD-ISR?
For technical support, including SI82398BD-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI82398BD-ISR requirements.
6.How does Aetrix verify that SI82398BD-ISR is sourced from the original manufacturer or authorized distributors?
All SI82398BD-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 SI82398BD-ISR meets industry standards.
7.What is the process for return or replacement of SI82398BD-ISR?
All SI82398BD-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI82398BD-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 SI82398BD-ISR part is unused and in its original packaging.
Return procedure for SI82398BD-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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