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Skyworks Solutions Inc. SI82397BD-IS3
- Part No.:
- SI82397BD-IS3
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 14-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI82397BD-IS3.pdf
- Description:
- DGT ISO 3.25KV 2CH GT DVR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,196
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Product details
Overview
SI82397BD-IS3 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 2.5–5.5 V input supply (VDDI), supports up to 5 kVRMS isolation, and features an 8 V output UVLO threshold with status feedback. It is used in solar inverters and motor drives requiring robust noise immunity and fail-safe operation.
For engineers reviewing the SI82397BD-IS3 datasheet, SI82397BD-IS3 pinout, SI82397BD-IS3 application, or SI82397BD-IS3 equivalent, key selection criteria include its SOIC-14 wide-body package, 30 ns propagation delay, 100 kV/µs CMTI, programmable dead time (10–200 ns), and absence of enhanced UVLO or deglitch functionality - distinguishing it from other Si8239x variants.
Technical Context
The SI82397BD-IS3 implements two independent isolated channels using Skyworks' proprietary RF-based silicon isolation barrier, enabling galvanic separation between input logic (VIA/VIB) and output driver stages (VOA/VOB). Each channel features fail-safe default-low outputs during VDDI power-down and independent UVLO monitoring on both driver supplies (VDDA/VDDB).
It uses TTL-compatible high-true inputs, supports 1 ms safe delayed startup, and provides RDY status feedback. Unlike Si82390/1/3/5/6 variants, it lacks enhanced UVLO feedback across isolation and does not support deglitch filtering - confirmed by Table 1.1 and Section 2.2.1 truth table for Si82397.
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 - sufficient to directly drive high-gate-charge IGBTs and MOSFETs without external buffers in 1–3 kW inverters. |
| Propagation Delay | 30 ns - ensures tight timing control in high-frequency switching applications (e.g., >100 kHz DC-DC or motor control). |
| CMTI | 100 kV/µs - rejects fast transient noise in noisy industrial environments, preventing false triggering in half-bridge configurations. |
| UVLO Threshold | 8 V on VDDA/VDDB - prevents erratic switching during brown-out conditions while allowing operation down to 10 V supply rails. |
| Startup Delay | 1 ms typical - guarantees monotonic, glitch-free output initialization after power-on, critical for transformer-coupled topologies. |
| Operating Temperature | –40 °C to +125 °C - supports under-hood automotive and industrial ambient conditions without derating. |
Pinout & Package
SI82397BD-IS3 is housed in a RoHS-compliant SOIC-14 wide-body package (7.5 mm body width, 10.3 mm length), qualified to JEDEC MS-012 standards with 260 °C peak reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIA | Channel A input | TTL-compatible high-true logic input controlling VOA; referenced to GNDI. |
| VIB | Channel B input | TTL-compatible high-true logic input controlling VOB; referenced to GNDI. |
| EN | Enable control | Active-high enable pin; pulls both outputs low when deasserted, supporting system-level fault shutdown. |
| VDDI | Input-side supply | 2.5–5.5 V logic supply powering internal isolator and input circuitry; includes UVLO monitoring. |
| GNDI | Input-side ground | Reference for VIA, VIB, EN, VDDI, and RDY; galvanically isolated from power-side ground. |
| RDY | Ready status output | Open-drain digital flag indicating valid output state after 1 ms startup delay; pulled up externally. |
| VDDA | Driver A supply | 10–24 V supply for high-side or low-side output stage A; monitored for 8 V UVLO. |
| VOA | Output A | 4 A sink/source capable driver output; defaults low if VDDI or VDDA is invalid. |
| GND1 | Driver A ground | Power ground for VDDA/VOA; isolated from GNDI and GND2. |
| VDDB | Driver B supply | 10–24 V supply for second output stage B; independently monitored for 8 V UVLO. |
| VOB | Output B | 4 A sink/source capable driver output; defaults low if VDDI or VDDB is invalid. |
| GND2 | Driver B ground | Power ground for VDDB/VOB; isolated from GNDI and GND1. |
| NC | No connect | Pin 13 is unconnected internally; must remain floating or grounded per layout guidelines. |
| NC | No connect | Pin 14 is unconnected internally; must remain floating or grounded per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Dual isolated drivers in one SOIC-14 WB package | Reduces PCB area and interconnect complexity vs. discrete optocoupler + driver solutions in half-bridge designs. |
| Fail-safe default-low outputs | Ensures MOSFETs/IGBTs remain off during power-up, brown-out, or isolation barrier failure - critical for functional safety. |
| 1 ms safe delayed startup | Eliminates output glitches during power sequencing, enabling reliable initialization in isolated DC-DC and inverter controllers. |
| Independent UVLO on VDDA and VDDB | Prevents shoot-through by disabling respective output if its driver supply drops below 8 V - no cross-channel feedback. |
| RDY status pin | Provides system controller visibility into driver readiness, enabling synchronized gate drive enable after safe startup. |
Applications
| Solar Inverters | Motor Control Systems |
|---|---|
Use Scenario: Driving high-voltage IGBT half-bridges in string inverters with 600–1200 V DC link. IC Role / Device Role / Timing Role: Isolated gate driver providing level-shifted, noise-immune PWM signals to upper/lower switches with precise dead-time control. Use Value: 100 kV/µs CMTI prevents false turn-on during fast dv/dt transients across transformerless PV arrays. |
Use Scenario: Controlling three-phase BLDC or PMSM motors in HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: Dual-channel isolated driver delivering 4 A peak current to gate terminals with matched propagation delay (≤30 ns). Use Value: Tight skew minimizes phase imbalance and torque ripple; SOIC-14 WB footprint simplifies thermal management in compact modules. |
| Industrial DC-DC Converters | On-Board Chargers (OBC) |
Use Scenario: Gate driving synchronous rectifiers and primary-side switches in isolated 1–3 kW telecom or server PSUs. IC Role / Device Role / Timing Role: High-CMTI isolated driver enabling ZVS/ZCS soft-switching waveforms with accurate timing alignment. Use Value: 30 ns propagation delay and <1 ns skew ensure precise overlap control in phase-shifted full-bridge topologies. |
Use Scenario: Driving bidirectional SiC MOSFETs in 11 kW AC/DC OBCs for BEVs. IC Role / Device Role / Timing Role: Fail-safe isolated driver with 1 ms startup delay and RDY signaling for ISO 26262 ASIL-B system initialization. Use Value: Default-low behavior on VDDI loss prevents uncontrolled battery discharge during vehicle power-up sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si82390BD-IS3 | Includes enhanced UVLO with status feedback across isolation barrier; same 8 V UVLO threshold and SOIC-14 WB package. | Required where cross-channel UVLO fault reporting to controller is needed (e.g., transformer-coupled forward converters). | Select Si82390BD-IS3 only if enhanced UVLO feedback is mandated; otherwise SI82397BD-IS3 offers simpler interface and lower cost. |
| UCC5390SCDR | Texas Instruments part with 5 kVRMS isolation, 4 A drive, but uses capacitive isolation and lacks RDY pin or programmable dead time. | Suitable for cost-sensitive industrial drives where TI's ecosystem and design tools are preferred, but not for ASIL-B automotive use. | Choose UCC5390SCDR for TI-based reference designs; SI82397BD-IS3 is preferred when RDY signaling, 1 ms startup, or Skyworks' RF isolation reliability is required. |
Compared with Si82390BD-IS3, SI82397BD-IS3 omits cross-isolation UVLO feedback but retains identical timing, drive strength, and safety ratings - simplifying control logic. Versus UCC5390SCDR, it adds RDY status and safer startup behavior at the cost of vendor-specific toolchain integration.
Availability
SI82397BD-IS3 is available at Aetrix Electronics and suitable for solar inverters, motor control systems, and isolated DC-DC power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned manufacturing rigor.
Supply support for SI82397BD-IS3 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 power electronics, replacing aging optocoupler-based solutions with silicon-isolated drivers offering superior CMTI, timing accuracy, and temperature stability.
FAQ
What is the isolation voltage rating of the SI82397BD-IS3?
The SI82397BD-IS3 is rated for 5 kVRMS isolation withstand voltage per UL 1577 and IEC62368-1, supporting reinforced insulation in industrial and automotive power systems. This rating applies across the entire isolation barrier between input (VIA/VIB/EN/GNDI) and output (VOA/VOB/VDDA/VDDB/GND1/GND2) sides, validated for 1 minute at 50/60 Hz.
Does the SI82397BD-IS3 support programmable dead time?
Yes, the SI82397BD-IS3 supports programmable dead time in the range of 10–200 ns, implemented via external resistor configuration on the DT pin. This feature prevents shoot-through in half-bridge topologies by ensuring non-overlapping gate drive signals - a capability confirmed in the Si8239x datasheet Section 2.7 and Table 1.1.
What is the function of the RDY pin on the SI82397BD-IS3?
The RDY pin on the SI82397BD-IS3 is an open-drain status output that goes high after the 1 ms safe startup delay, indicating that both VOA and VOB are ready to respond to input signals. It allows the system controller to synchronize gate drive enable timing, preventing premature switching during power-up sequences in critical applications like OBCs and inverters.
How does the SI82397BD-IS3 behave during input supply loss?
When VDDI is lost or falls below UVLO threshold, the SI82397BD-IS3 forces both VOA and VOB to default low - a fail-safe behavior verified in Table 2.3 (Si82397 truth table). This ensures connected MOSFETs or IGBTs remain off, preventing unintended conduction in power stages during controller reset or brown-out events.
Is the SI82397BD-IS3 qualified for automotive applications?
The SI82397BD-IS3 is an industrial-grade part (suffix "-IS3"). Its automotive-grade counterpart is SI82397BD-AS3, which undergoes full AEC-Q100 qualification, AIAG-compliant PPAP, and automotive-specific process flows. While SI82397BD-IS3 shares identical electrical parameters and construction, it is not certified for automotive use - select SI82397BD-AS3 for ASIL-B systems.
SI82397BD-IS3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 14-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Number of Channels:
- 2
- Voltage - Isolation:
- 3250Vrms
- 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:
- 14-SOIC
- Approval Agency:
- CQC, CSA, UR, VDE
SI82397BD-IS3 FAQ
1.How can I place an order for SI82397BD-IS3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI82397BD-IS3 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 SI82397BD-IS3 reliable?
The price and inventory of SI82397BD-IS3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI82397BD-IS3 is usually 5 days.
3.What payment methods are accepted for SI82397BD-IS3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI82397BD-IS3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI82397BD-IS3?
SI82397BD-IS3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI82397BD-IS3 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 SI82397BD-IS3?
For technical support, including SI82397BD-IS3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI82397BD-IS3 requirements.
6.How does Aetrix verify that SI82397BD-IS3 is sourced from the original manufacturer or authorized distributors?
All SI82397BD-IS3 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 SI82397BD-IS3 meets industry standards.
7.What is the process for return or replacement of SI82397BD-IS3?
All SI82397BD-IS3 units undergo pre-shipment inspection (PSI). If there is an issue with SI82397BD-IS3, 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 SI82397BD-IS3 part is unused and in its original packaging.
Return procedure for SI82397BD-IS3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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