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Skyworks Solutions Inc. SI82391BB-IS1R
- Part No.:
- SI82391BB-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI82391BB-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,994
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Product details
Overview
SI82391BB-IS1R 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 enhanced output UVLO with 8 V threshold and no UVLO status pin. It is used in solar inverters and traction inverters requiring robust fault detection and safe startup.
For engineers reviewing the SI82391BB-IS1R datasheet, SI82391BB-IS1R pinout, SI82391BB-IS1R application, or SI82391BB-IS1R equivalent, key selection criteria include its SOIC-16 narrow-body package, independent VIA/VIB inputs, programmable dead time absence, deglitch disable, and automotive-grade compatibility via Si82391BB-AS1.
Technical Context
The SI82391BB-IS1R implements RF-based silicon isolation with on/off keying modulation, enabling high CMTI (100 kV/µs) and low propagation delay (30 ns). Its dual-channel architecture supports independent high-side and low-side gate drive with fail-safe default-low outputs during VDDI power-down.
It integrates enhanced UVLO monitoring per output channel (8 V threshold), EN pin (active-high) for system-level safety shutdown, and a fixed 1 ms delayed startup time for monotonic initialization-without RDY pin feedback or programmable dead time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS withstand voltage - enables reinforced insulation per IEC62368-1 and UL 1577. |
| Peak Output Current | 4.0 A - drives large gate capacitance MOSFETs/IGBTs without external buffers. |
| VDDI Supply Range | 2.5 V–5.5 V - compatible with modern low-voltage microcontrollers and logic interfaces. |
| Propagation Delay | 30 ns - ensures precise timing alignment in high-frequency switching (e.g., >100 kHz inverters). |
| UVLO Threshold | 8 V on VDDA/VDDB - prevents erroneous turn-on during driver supply brownout. |
| Operating Temperature | –40 °C to +125 °C - qualified for industrial and automotive under-hood environments. |
| Package | SOIC-16 narrow body - footprint-compatible with space-constrained motor control PCBs. |
Pinout & Package
SI82391BB-IS1R is housed in a RoHS-compliant SOIC-16 narrow-body package (5.3 mm width), rated for 260 °C peak reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIA | Input A signal | TTL-compatible high-true logic input controlling VOA; referenced to GNDI. |
| VIB | Input B signal | TTL-compatible high-true logic input controlling VOB; referenced to GNDI. |
| EN | Enable control | Active-high enable; forces both outputs low when deasserted - critical for system safety interlocks. |
| VDDI | Input-side supply | 2.5 V–5.5 V power for isolation barrier and input logic; powers internal oscillator and EN circuitry. |
| GNDI | Input-side ground | Reference for VIA, VIB, EN, and VDDI - galvanically isolated from driver-side grounds. |
| VDDA | Driver A supply | 10 V–24 V supply for high-side or low-side output stage A; triggers UVLO if <8 V. |
| VOA | Output A | 4.0 A capable push-pull output; defaults low during VDDI undervoltage or EN deassertion. |
| GND1 | Driver A ground | Return path for VDDA and VOA - isolated from GNDI and GND2. |
| VDDB | Driver B supply | 10 V–24 V supply for second output stage; triggers UVLO if <8 V - monitored independently. |
| VOB | Output B | 4.0 A capable push-pull output; defaults low under same fault conditions as VOA. |
| GND2 | Driver B ground | Return path for VDDB and VOB - isolated from GNDI and GND1. |
| NC | No connect | Pins 13–16 are internally unused and must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Enhanced output UVLO | Independent 8 V UVLO on VDDA and VDDB with automatic low-drive fault response - prevents shoot-through during supply sag. |
| Fail-safe default-low outputs | VOA and VOB drive low when VDDI is unpowered - eliminates floating gate states in loss-of-control scenarios. |
| Safe delayed startup | Fixed 1 ms delay from VDDI valid to first valid output - ensures stable bias before gate activation in DC-DC and inverter start-up. |
| High CMTI immunity | 100 kV/µs common-mode transient immunity - maintains signal integrity in noisy motor drive and inverter EMI environments. |
| RF-based silicon isolation | No LED degradation or aging drift; achieves tighter part-to-part skew and temperature stability vs. optocouplers. |
Applications
| Solar Inverters | Traction Inverters |
|---|---|
Use Scenario: Driving high-voltage IGBT half-bridge in string inverters with rapid MPPT transients and grid fault ride-through requirements. IC Role / Device Role / Timing Role: Dual isolated gate driver providing independent high-side/low-side control with synchronized UVLO monitoring per leg. Use Value: 8 V UVLO prevents false turn-on during DC-link voltage dip; 4.0 A drive strength enables fast IGBT switching at 16 kHz with minimal gate resistor. |
Use Scenario: Controlling dual-leg IGBT modules in EV traction inverters operating at –40 °C to +125 °C ambient. IC Role / Device Role / Timing Role: Fail-safe isolated driver ensuring VOA/VOB default low during MCU reset or VDDI interruption. Use Value: SOIC-16 narrow-body package fits compact inverter gate driver boards; AEC-Q100 qualification supports automotive production. |
| Industrial Motor Drives | On-board Chargers (OBC) |
Use Scenario: High-reliability 3-phase inverter for HVAC compressors with frequent start-stop cycles and thermal stress. IC Role / Device Role / Timing Role: Isolated dual driver delivering 4.0 A peak current to reduce gate charge time and conduction losses. Use Value: 100 kV/µs CMTI suppresses noise-induced false triggering in high-dV/dt motor phases; extended temp range ensures field longevity. |
Use Scenario: Bidirectional AC/DC and DC/DC stages in 11 kW OBCs requiring galvanic isolation between primary and secondary controls. IC Role / Device Role / Timing Role: Independent VIA/VIB interface enables asymmetric PWM control for interleaved PFC and LLC stages. Use Value: Enhanced UVLO with 8 V threshold protects against bootstrap supply collapse in high-side driver rails during soft-start. |
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 |
|---|---|---|---|
| Si82391BB-AS1 | Automotive-grade variant with AEC-Q100 qualification, AIAG PPAP support, and IMDS/CAMDS compliance - identical electrical specs and SOIC-16 NB package. | Required for OEM automotive programs; supports full traceability and zero-defect manufacturing flows. | Select Si82391BB-AS1 when automotive PPAP documentation, material data system reporting, or extended reliability validation is mandated. |
| Si82391BD-IS | Same functional spec but in SOIC-16 wide-body package (7.5 mm width); otherwise identical UVLO, drive strength, and timing. | Used where board layout accommodates wider footprint or requires higher creepage/clearance for reinforced insulation. | Choose Si82391BD-IS when mechanical clearance or legacy SOIC-16 WB land pattern compatibility is prioritized over space-constrained layouts. |
Compared with Si82391BB-AS1, the SI82391BB-IS1R offers identical performance in industrial environments without automotive process controls; versus Si82391BD-IS, it saves PCB area with narrow-body packaging while maintaining full functional equivalence.
Availability
SI82391BB-IS1R is available at Aetrix Electronics and suitable for solar inverters, traction inverters, and industrial motor drives requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for SI82391BB-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 to replace optocoupled gate drivers in high-reliability power systems, delivering superior CMTI, lifetime stability, and integration for motor control, renewable energy, and automotive electrification.
FAQ
What is the UVLO behavior of SI82391BB-IS1R on VDDA and VDDB?
The SI82391BB-IS1R implements independent 8 V UVLO on both VDDA and VDDB. If either supply drops below 8 V, the corresponding output (VOA or VOB) is actively driven low. This behavior is confirmed in Table 2.1 of the datasheet and prevents shoot-through in bridge configurations during partial supply failure. SI82391BB-IS1R does not provide UVLO status feedback to the controller.
Does SI82391BB-IS1R support programmable dead time?
No, SI82391BB-IS1R does not support programmable dead time. Per the Ordering Guide, only Si82394/8 variants (e.g., Si82394BB4-IS1) offer 40–600 ns dead-time setting. SI82391BB-IS1R belongs to the Si82390/1/3 series, which lacks dead-time control circuitry - confirmed by "N/A" in the Dead-Time Setting column for this part number.
What is the meaning of "BB" in SI82391BB-IS1R?
In the SI82391BB-IS1R ordering code, "BB" denotes the output UVLO threshold (8 V) and enhanced UVLO feature set with no UVLO status pin. This is explicitly defined in Table 1.1: "BB" = 8 V UVLO, Yes Enhanced UVLO, No UVLO Status Pin. It distinguishes SI82391BB-IS1R from "AB" (6 V) and "CB" (12 V) variants.
Is SI82391BB-IS1R pin-compatible with Si82391BB-AS1?
Yes, SI82391BB-IS1R and Si82391BB-AS1 share identical pinout, electrical specifications, and SOIC-16 narrow-body package. The only differences are manufacturing flow (industrial vs. automotive), qualification (JEDEC vs. AEC-Q100), and documentation support (PPAP, IMDS). No PCB changes are required when migrating between them.
What is the startup behavior of SI82391BB-IS1R during power-up?
SI82391BB-IS1R enforces a fixed 1 ms safe startup delay (tSTARTUP_SAFE) from VDDI reaching valid level to first valid output transition. During this interval, VOA and VOB remain low regardless of VIA/VIB state - ensuring monotonic initialization. This is documented in Section 2.6.5 and applies specifically to Si82390/1/3/7 variants like SI82391BB-IS1R.
SI82391BB-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):
- 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
SI82391BB-IS1R FAQ
1.How can I place an order for SI82391BB-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI82391BB-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 SI82391BB-IS1R reliable?
The price and inventory of SI82391BB-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI82391BB-IS1R is usually 5 days.
3.What payment methods are accepted for SI82391BB-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI82391BB-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI82391BB-IS1R?
SI82391BB-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI82391BB-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 SI82391BB-IS1R?
For technical support, including SI82391BB-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI82391BB-IS1R requirements.
6.How does Aetrix verify that SI82391BB-IS1R is sourced from the original manufacturer or authorized distributors?
All SI82391BB-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 SI82391BB-IS1R meets industry standards.
7.What is the process for return or replacement of SI82391BB-IS1R?
All SI82391BB-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI82391BB-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 SI82391BB-IS1R part is unused and in its original packaging.
Return procedure for SI82391BB-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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