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Skyworks Solutions Inc. SI82398AB4-IS1R
- Part No.:
- SI82398AB4-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI82398AB4-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,071
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Product details
Overview
SI82398AB4-IS1R from Skyworks Solutions is a dual-channel isolated gate driver IC with high-side/low-side PWM input configuration, 4.0 A peak output current, 5 kVRMS isolation rating, and programmable dead time (40–600 ns). It operates with 2.5 V–5.5 V input supply (VDDI) and up to 24 V driver supply, and features deglitch filtering and enhanced UVLO without status pin - designed for robust motor control and inverter half-bridge stages.
For engineers reviewing the SI82398AB4-IS1R datasheet, SI82398AB4-IS1R pinout, SI82398AB4-IS1R application, or SI82398AB4-IS1R equivalent, key selection criteria include its PWM-input HS/LS topology, absence of UVLO status feedback, deglitch-enabled noise immunity, SOIC-16 narrow-body package, and automotive-grade qualification (AEC-Q100) with -40°C to +125°C operation.
Technical Context
The SI82398AB4-IS1R implements RF-based silicon isolation with on/off keying modulation, delivering 100 kV/µs CMTI and 30 ns propagation delay. Its single PWM input controls complementary high-side and low-side outputs with programmable dead time to prevent shoot-through in bridge topologies.
It integrates independent undervoltage lockout (UVLO) on both driver sides (6 V threshold), automatic fail-safe low-default behavior during VDDI power-down, and an active-high EN pin with 100 kΩ external pull-down requirement. The device supports bootstrap-independent operation and rejects transients via deglitch filtering.
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 power systems. |
| Peak Output Current | 4.0 A - drives high-gate-charge MOSFETs/IGBTs directly without external buffers in 10–350 kHz switching applications. |
| Propagation Delay | 30 ns - ensures precise timing alignment between HS/LS channels for tight dead-time control in high-frequency inverters. |
| Dead Time Range | 40–600 ns - programmable via external resistor to match FET switching characteristics and prevent cross-conduction. |
| Input Supply Range | 2.5 V–5.5 V VDDI - compatible with modern low-voltage microcontrollers and logic families without level-shifting. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial environments with full parametric performance. |
| UVLO Threshold | 6 V on VDDA/VDDB - prevents erratic switching during brown-out conditions while maintaining independent channel monitoring. |
Pinout & Package
SI82398AB4-IS1R is housed in a RoHS-compliant SOIC-16 narrow-body package (5.3 mm width), rated for 260 °C peak reflow, with creepage/clearance compliant to reinforced insulation standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIA | Input Power Supply (Isolated Side) | Not applicable - SI82398AB4-IS1R uses single PWM input; VIA is unused and must be tied to GNDI per datasheet guidance. |
| VIB | Input Power Supply (Isolated Side) | Not applicable - VIB is unused and must be tied to GNDI; only PWM, EN, RDY, VDDI, GNDI, VDDA, VDDB, VOA, VOB, GND1, GND2 are functional. |
| PWM | Single High-Side/Low-Side Control Input | TTL-compatible logic input: high → VOA=H/VOB=L; low → VOA=L/VOB=H - enables compact half-bridge control with one signal line. |
| EN | Enable Input (Active High) | Drives both outputs low when pulled low; requires 100 kΩ pull-down to GNDI; inactive if VDDI is below UVLO. |
| RDY | Ready Status Output | Open-drain digital flag indicating valid output operation after 1 ms safe startup delay - used for system synchronization. |
| VDDI | Input-Side Supply Voltage | 2.5 V–5.5 V power for isolation barrier and input logic; decoupled with 1 µF + 0.1 µF capacitors placed near pin. |
| GNDI | Input-Side Ground Reference | Isolated ground for input circuitry; must be separated from power-side grounds to maintain isolation integrity. |
| VDDA | High-Side Driver Supply | 10–24 V supply for high-side output stage; monitored by independent 6 V UVLO to ensure safe turn-off during fault. |
| VDDB | Low-Side Driver Supply | 10–24 V supply for low-side output stage; independently monitored by 6 V UVLO for fault-resilient operation. |
| VOA | High-Side Gate Drive Output | 4.0 A capable push-pull output driving external N-channel MOSFET/IGBT gate; defaults low on VDDI loss or UVLO. |
| VOB | Low-Side Gate Drive Output | Complementary 4.0 A push-pull output; synchronized with VOA via internal logic and dead-time generator. |
| GND1 | High-Side Output Return | Power ground reference for VOA; electrically isolated from GNDI and GND2 - critical for floating high-side operation. |
| GND2 | Low-Side Output Return | Power ground reference for VOB; separate from GND1 to avoid coupling noise into high-side path. |
| NC | No Connect | Pins 1, 15, and 16 are no-connect; must remain unconnected per datasheet - not for thermal pad or biasing. |
Key Features
| Feature | Design Value |
|---|---|
| RF-Based Silicon Isolation | Eliminates LED aging and CTR drift of optocouplers; achieves 100 kV/µs CMTI and <30 ns skew over temperature and lifetime. |
| Programmable Dead Time | 40–600 ns range set by single external resistor - adapts to varying FET gate charge and layout parasitics without firmware changes. |
| Deglitch Filtering | Hardware-level noise rejection on PWM input - suppresses sub-50 ns transients common in noisy motor drive environments. |
| Fail-Safe Default State | Both VOA and VOB drive low during VDDI power loss, UVLO, or EN deactivation - prevents unintended power device conduction. |
| AEC-Q100 Qualified | Automotive-grade reliability with zero-defect manufacturing flow, PPAP documentation, and IMDS/CAMDS compliance. |
Applications
| Motor Control Systems | Solar Inverters |
|---|---|
Use Scenario: Driving IGBTs in three-phase BLDC motor controllers for EV traction and industrial pumps. IC Role / Device Role / Timing Role: High-side/low-side gate driver with PWM input and programmable dead time for half-bridge leg control. Use Value: 4.0 A drive strength ensures fast MOSFET/IGBT switching at 20–30 kHz; deglitch filtering maintains clean edges in EMI-heavy motor environments. |
Use Scenario: Controlling H-bridge power stages in string-level solar inverters operating at 16–22 kHz. IC Role / Device Role / Timing Role: Isolated gate driver enabling transformerless inverter topologies with reinforced insulation compliance. Use Value: 5 kVRMS isolation and AEC-Q100 qualification support long-term field reliability in outdoor photovoltaic installations. |
| Battery Management Systems | Traction Inverters |
Use Scenario: Managing bi-directional DC-DC converters in automotive battery pack balancing circuits. IC Role / Device Role / Timing Role: Isolated gate driver for synchronous buck-boost stages requiring precise shoot-through prevention. Use Value: Independent VDDA/VDDB UVLO (6 V) detects rail collapse before cell overvoltage, enabling safe shutdown in BMS fault sequences. |
Use Scenario: Driving SiC MOSFET half-bridges in 800 V EV traction inverters with 100 kHz+ switching. IC Role / Device Role / Timing Role: High-CMTI isolated driver supporting fast-switching wide-bandgap devices in high-noise powertrain environments. Use Value: 100 kV/µs transient immunity prevents false triggering during high-di/dt events; SOIC-16 NB footprint supports compact PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI82394AB4-IS1R | Includes UVLO status pin (RDY tied to UVLO flag); same PWM input, dead time, and package. | Required where controller needs explicit UVLO fault reporting - e.g., ISO 26262 ASIL-B diagnostics. | Select SI82394AB4-IS1R if UVLO status feedback is mandatory; otherwise SI82398AB4-IS1R reduces system complexity. |
| UCC5390SCDR | Texas Instruments part with 5 A peak drive, 3.3 V–15 V VDDI, no deglitch, and different pinout (SOIC-16 WB). | Used in industrial UPS and servo drives where higher drive current offsets slightly lower CMTI (50 kV/µs). | Choose UCC5390SCDR only if 5 A drive is needed and layout allows SOIC-16 WB; SI82398AB4-IS1R offers superior noise immunity and automotive qualification. |
Compared with SI82394AB4-IS1R, SI82398AB4-IS1R removes UVLO status reporting to simplify diagnostics integration; versus UCC5390SCDR, it delivers higher CMTI, integrated deglitch, and AEC-Q100 compliance - making it optimal for automotive and high-noise solar/motor applications where reliability outweighs marginal drive-current gain.
Availability
SI82398AB4-IS1R is available at Aetrix Electronics and suitable for motor control systems, solar inverters, and battery management systems requiring stable component supply, automotive-grade traceability, and long-lifecycle availability.
Supply support for SI82398AB4-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 engineered specifically for high-reliability isolated gate driving in automotive and industrial power conversion, replacing aging optocoupler-based solutions with silicon-isolated performance and AEC-Q100 robustness.
FAQ
What is the function of the RDY pin on the SI82398AB4-IS1R?
The RDY pin on the SI82398AB4-IS1R is an open-drain ready indicator that goes high after the 1 ms safe startup delay, confirming valid VDDI, VDDA, and VDDB supplies and stable internal logic. It does not report UVLO status - unlike SI82394AB4-IS1R - and remains low during initialization or fault conditions. This signal enables synchronized system boot sequencing in automotive ECUs and inverters.
Does the SI82398AB4-IS1R support bootstrap power supply for the high-side driver?
No, the SI82398AB4-IS1R does not support bootstrap power for VDDA. Its architecture requires independent, isolated 10–24 V supplies for both VDDA and VDDB. Bootstrap configurations risk violating the independent UVLO monitoring requirement and may cause unsafe operation. External isolated DC-DC converters or dedicated floating supplies are required for high-side power.
How is dead time programmed on the SI82398AB4-IS1R?
Dead time on the SI82398AB4-IS1R is set using a single external resistor connected between the DT pin and GND2. The value selects a range from 40 ns to 600 ns per the datasheet's DT resistor table. No capacitor or additional components are needed. This hardware-programmed dead time eliminates software dependency and ensures deterministic timing across temperature and voltage variations.
What is the significance of "AB4" in the SI82398AB4-IS1R part number?
The "AB4" suffix in SI82398AB4-IS1R denotes the specific variant within the Si8239x family: "A" = 6 V UVLO threshold, "B" = enhanced UVLO (with independent channel monitoring), and "4" = high-side/low-side PWM-input configuration with deglitch enabled. This distinguishes it from "AD" (wide-body), "IS1" (tape-and-reel, SOIC-16 NB), and "R" (reel packaging indicator).
Is the SI82398AB4-IS1R pin-compatible with other Si8239x variants?
The SI82398AB4-IS1R shares the same SOIC-16 narrow-body pinout with all Si8239x parts in the IS1 package, including SI82394AB4-IS1R and SI82398BB4-IS1R. However, functional pin assignments differ - e.g., VIA/VIB are NC on SI82398AB4-IS1R but active on dual-input variants. PCB layout must match the intended variant's signal mapping, not just mechanical footprint.
SI82398AB4-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:
- 6.5V ~ 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
SI82398AB4-IS1R FAQ
1.How can I place an order for SI82398AB4-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI82398AB4-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 SI82398AB4-IS1R reliable?
The price and inventory of SI82398AB4-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI82398AB4-IS1R is usually 5 days.
3.What payment methods are accepted for SI82398AB4-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI82398AB4-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI82398AB4-IS1R?
SI82398AB4-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI82398AB4-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 SI82398AB4-IS1R?
For technical support, including SI82398AB4-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI82398AB4-IS1R requirements.
6.How does Aetrix verify that SI82398AB4-IS1R is sourced from the original manufacturer or authorized distributors?
All SI82398AB4-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 SI82398AB4-IS1R meets industry standards.
7.What is the process for return or replacement of SI82398AB4-IS1R?
All SI82398AB4-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI82398AB4-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 SI82398AB4-IS1R part is unused and in its original packaging.
Return procedure for SI82398AB4-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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