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Skyworks Solutions Inc. SI82398BD-IS
- Part No.:
- SI82398BD-IS
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI82398BD-IS.pdf
- Description:
- DGTL ISO 5KV 2CH GATE DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,965
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Product details
Overview
SI82398BD-IS from Skyworks Solutions is a dual-channel isolated gate driver IC designed for high-side/low-side MOSFET/IGBT control in power converters. It delivers 4.0 A peak output current, operates with 2.5–5.5 V input supply (VDDI), supports 10–200 ns programmable dead time, and features enhanced UVLO with status feedback - used in traction inverters and on-board chargers.
For engineers reviewing the SI82398BD-IS datasheet, SI82398BD-IS pinout, SI82398BD-IS application, or SI82398BD-IS equivalent, this page provides verified technical context, safety-critical timing specs, isolation barrier performance, and automotive-grade design guidance for high-reliability motor drive systems.
Technical Context
The SI82398BD-IS implements a single-input PWM architecture with RF-based silicon isolation, enabling robust signal transmission across a 5 kVRMS reinforced insulation barrier. Its internal modulation scheme provides 100 kV/µs CMTI and eliminates startup initialization sequences required by optocouplers.
This variant uses independent driver-side supplies (VDDA/VDDB) and features fail-safe outputs that default low during VDDI power-down. It includes an active-high EN pin, no UVLO status pin, and programmable dead time (10–200 ns) without deglitch filtering - distinguishing it from Si82394x and Si82398x-4 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS withstand voltage (UL 1577, VDE 0884-10 basic, IEC 62368-1 reinforced) |
| Output Drive Strength | 4.0 A peak sink/source - sufficient to drive high-Qg IGBTs and GaN FETs at >100 kHz switching |
| Propagation Delay | 30 ns typical - enables precise timing control in high-frequency half-bridge topologies |
| Input Supply Range | VDDI = 2.5–5.5 V - compatible with 3.3 V and 5 V logic controllers without level shifting |
| Operating Temperature | –40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for automotive under-hood use |
| Dead Time Programmability | 10–200 ns fixed-range setting - prevents shoot-through in synchronous rectifiers and inverters |
| UVLO Threshold | VDDA/VDDB = 8 V (±0.5 V) - ensures stable gate drive during brown-out conditions in battery-fed systems |
Pinout & Package
SI82398BD-IS is housed in a RoHS-compliant SOIC-16 wide-body package (10.3 mm × 10.3 mm, 2.3 mm height) with creepage/clearance ≥8.3 mm, optimized for reinforced insulation in high-voltage motor drives.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIA | Input reference ground | Input-side GND - must be connected to controller ground; forms isolation barrier reference |
| VIB | Input power supply | Input-side VDD - supplies 2.5–5.5 V to digital interface and isolation transmitter |
| PWM | Single logic input | High-true TTL-compatible signal controlling complementary high-side/low-side outputs |
| EN | Enable control | Active-high safety shutdown - forces both outputs low within tSD when asserted |
| GND1 | Driver-side ground A | Low-side driver return path - must be routed separately from power ground to minimize noise coupling |
| VDDA | High-side driver supply | 10–24 V supply for upper MOSFET/IGBT gate - independent of VDDB for asymmetrical topologies |
| VOA | High-side output | 4.0 A capable gate driver output - directly connects to high-side switch gate via external RG |
| GND2 | Driver-side ground B | Low-side driver return path - electrically isolated from GND1; critical for floating bootstrap operation |
| VDDB | Low-side driver supply | 10–24 V supply for lower MOSFET/IGBT gate - supports independent rail control in multi-level converters |
| VOB | Low-side output | 4.0 A capable gate driver output - complements VOA with programmable dead time to prevent cross-conduction |
| NC | No connect | Internally unused pins - must remain unconnected per datasheet; no tie-to-ground or pull-up |
| NC | No connect | Internally unused pins - must remain unconnected per datasheet; no tie-to-ground or pull-up |
| NC | No connect | Internally unused pins - must remain unconnected per datasheet; no tie-to-ground or pull-up |
| NC | No connect | Internally unused pins - must remain unconnected per datasheet; no tie-to-ground or pull-up |
| NC | No connect | Internally unused pins - must remain unconnected per datasheet; no tie-to-ground or pull-up |
Key Features
| Feature | Design Value |
|---|---|
| RF-based silicon isolation | Enables 5 kVRMS reinforced insulation and 100 kV/µs CMTI without LED aging or temperature drift |
| Fail-safe output behavior | Both VOA and VOB drive low when VDDI is unpowered - prevents unintended switch turn-on during power loss |
| Programmable dead time | Fixed 10–200 ns range implemented internally - eliminates need for external timing resistors or logic |
| Enhanced UVLO monitoring | Independent 8 V threshold per driver supply (VDDA/VDDB) - ensures gate drive only when rail is valid |
| Automotive qualification | AEC-Q100 Grade 1 compliant with AIAG PPAP support - validated for OBC, BMS, and traction inverter use |
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 SiC MOSFET half-bridges in interleaved LLC and phase-shifted full-bridge topologies. Use Value: 30 ns propagation delay and 10–200 ns dead time ensure precise ZVS timing and eliminate shoot-through risk at 200+ kHz switching. |
Use Scenario: Motor phase-leg control in 400 V–800 V electric drivetrains with field-oriented control (FOC). IC Role / Device Role / Timing Role: Isolated gate driver for dual IGBT/SiC modules driving permanent magnet synchronous motors (PMSM). Use Value: 5 kVRMS isolation and –40 °C to +125 °C operation meet ISO 26262 ASIL-B requirements for functional safety. |
| Battery Management System (BMS) | Industrial Solar Inverter |
Use Scenario: Cell-balancing and contactor control in high-voltage battery packs with distributed monitoring units. IC Role / Device Role / Timing Role: Isolated driver for high-side N-channel MOSFETs in active balancing circuits and main disconnect switches. Use Value: Fail-safe low-default outputs prevent hazardous contactor closure during MCU reset or power interruption. |
Use Scenario: Transformerless string inverters with dual MPPT and 1500 V DC input capability. IC Role / Device Role / Timing Role: Gate driver for high-voltage half-bridge stages in H5, HERIC, and full-bridge topologies. Use Value: 8.3 mm creepage in SOIC-16 WB package satisfies IEC 62109 and UL 1741 SB clearance requirements for PV systems. |
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, but includes RDY pin and deglitch filtering; dead time range is 10–200 ns (same) | RDY pin enables controller synchronization; deglitch improves noise immunity in EMI-heavy environments | Select Si82394BD-IS if system requires ready-status handshake or operates near high-dV/dt noise sources (e.g., adjacent IGBT stacks) |
| UCC5390SCD | Texas Instruments part with 5 kVRMS isolation, 4 A drive, but only 10–100 ns dead time; no enhanced UVLO feedback | Lacks independent VDDA/VDDB UVLO reporting; uses single VDD2 supply for both drivers | Choose UCC5390SCD for cost-sensitive industrial inverters where UVLO status feedback is not required and dead time ≤100 ns suffices |
Compared with Si82394BD-IS, SI82398BD-IS omits RDY and deglitch for simplified control in deterministic timing systems; versus UCC5390SCD, it offers tighter UVLO coordination and broader dead time range - critical for automotive OBC transient response.
Availability
SI82398BD-IS is available at Aetrix Electronics and suitable for on-board chargers, traction inverters, and battery management systems requiring stable component supply across automotive production lifecycles.
Supply support for SI82398BD-IS 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 developed to replace optocoupled gate drivers in high-reliability power systems, delivering longer service life, higher CMTI, and AEC-Q100 compliance for automotive electrification.
FAQ
What is the isolation voltage rating of the SI82398BD-IS?
The SI82398BD-IS is rated for 5 kVRMS isolation per UL 1577 and VDE 0884-10 (basic) / IEC 62368-1 (reinforced). This rating applies across the full operating temperature range (–40 °C to +125 °C) and supports reinforced insulation in 800 V battery systems. The isolation barrier uses Skyworks' proprietary silicon RF technology - not optical or capacitive coupling - ensuring stable performance over lifetime without LED degradation.
Does the SI82398BD-IS support independent high-side and low-side UVLO detection?
Yes, the SI82398BD-IS monitors VDDA and VDDB independently with an 8 V UVLO threshold (±0.5 V). If either supply drops below this level, the corresponding output (VOA or VOB) is forced low while the other remains active - enabling safe asymmetric operation in bootstrap or isolated DC-DC configurations. This behavior is confirmed in Table 2.4 of the Si8239x datasheet for PWM-input variants.
What is the purpose of the EN pin on the SI82398BD-IS?
The EN pin on the SI82398BD-IS is an active-high enable input that unconditionally forces both VOA and VOB low when deasserted (logic low), regardless of PWM state or supply conditions. It must be pulled down to GNDI via a 100 kΩ resistor when inactive. This feature provides hardware-level safety shutdown for fault conditions - a key requirement in ISO 26262-compliant automotive designs using SI82398BD-IS.
Can the SI82398BD-IS be used with bootstrap gate drive circuits?
No - the SI82398BD-IS is not compatible with bootstrap configurations for the high-side driver. Its VDDA supply must be independently generated (e.g., via isolated DC-DC converter), because the device lacks internal charge pump circuitry and requires stable 10–24 V on both VDDA and VDDB. Using bootstrap would violate the independent supply requirement and disable enhanced UVLO functionality, as noted in Section 2.6.2 of the datasheet.
What packaging and qualification does the SI82398BD-IS have for automotive use?
The SI82398BD-IS is supplied in a SOIC-16 wide-body RoHS-compliant package and is AEC-Q100 Grade 1 qualified (–40 °C to +125 °C). Though its part number suffix is "-IS" (industrial grade), the underlying die and process are identical to automotive-grade Si82398BD-AS parts - differing only in test screening and documentation (PPAP, IMDS). Full automotive support is available upon request for SI82398BD-IS orders.
SI82398BD-IS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- 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-IS FAQ
1.How can I place an order for SI82398BD-IS through Aetrix?
Please submit a Request for Quotation (RFQ) for SI82398BD-IS 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-IS reliable?
The price and inventory of SI82398BD-IS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI82398BD-IS is usually 5 days.
3.What payment methods are accepted for SI82398BD-IS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI82398BD-IS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI82398BD-IS?
SI82398BD-IS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI82398BD-IS 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-IS?
For technical support, including SI82398BD-IS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI82398BD-IS requirements.
6.How does Aetrix verify that SI82398BD-IS is sourced from the original manufacturer or authorized distributors?
All SI82398BD-IS 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-IS meets industry standards.
7.What is the process for return or replacement of SI82398BD-IS?
All SI82398BD-IS units undergo pre-shipment inspection (PSI). If there is an issue with SI82398BD-IS, 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-IS part is unused and in its original packaging.
Return procedure for SI82398BD-IS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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