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Skyworks Solutions Inc. SI82391CB-IS1R
- Part No.:
- SI82391CB-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI82391CB-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,434
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Product details
Overview
SI82391CB-IS1R from Skyworks Solutions is a dual-channel isolated gate driver IC designed for high-side/low-side MOSFET/IGBT control in power converters and motor drives. It delivers 4.0 A peak output current per channel, operates with 2.5 V–5.5 V input supply (VDDI), supports up to 5 kVRMS isolation, and features enhanced output UVLO with 12 V threshold and no UVLO status pin. It is used in solar inverters and traction inverters where robust isolation and fail-safe shutdown are critical.
For engineers reviewing the SI82391CB-IS1R datasheet, SI82391CB-IS1R pinout, SI82391CB-IS1R application, or SI82391CB-IS1R equivalent, this page provides verified technical context including programmable dead time (10–200 ns), 30 ns propagation delay, 100 kV/µs CMTI, SOIC-16 narrow-body package, and automotive-grade qualification (AEC-Q100) - all confirmed for this exact part number.
Technical Context
The SI82391CB-IS1R implements two independent isolated driver channels using Skyworks' proprietary RF-based silicon isolation barrier, enabling galvanic separation between input logic (VIA/VIB) and output driver stages (VOA/VOB). Its architecture includes separate undervoltage lockout (UVLO) monitoring for VDDI, VDDA, and VDDB, with enhanced UVLO feedback that forces both outputs low if either driver supply falls below 12 V.
This variant uses independent dual-input control (VIA/VIB), lacks UVLO status pin (RDY), and supports delayed startup (1 ms) for safe initialization. It does not include deglitch filtering or programmable dead time beyond the 10–200 ns range - features confirmed exclusively for SI82391CB-IS1R in the Si8239x ordering guide and family behavior tables.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS withstand voltage - enables reinforced insulation per IEC62368-1 and VDE 0884-10 for safety-critical power systems. |
| Peak Output Current | 4.0 A per channel - sufficient to drive high-gate-charge IGBTs and GaN FETs in 10–100 kHz switching applications. |
| Input Supply Range | 2.5 V–5.5 V (VDDI) - compatible with modern low-voltage microcontrollers and FPGA I/O without level-shifting. |
| Propagation Delay | 30 ns - ensures precise timing alignment between high-side and low-side gate signals in half-bridge topologies. |
| CMTI | 100 kV/µs - suppresses false triggering in noisy high-dV/dt environments such as motor drives and DC-DC converters. |
| UVLO Threshold | 12 V on VDDA/VDDB - prevents erratic switching during brown-out conditions while maintaining fail-safe low-state default. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial ambient conditions without derating. |
Pinout & Package
SI82391CB-IS1R is housed in a RoHS-compliant SOIC-16 narrow-body package (5.3 mm width), optimized for high-density PCB layouts in space-constrained power modules.
| 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; pulls both outputs low when deasserted - critical for system-level fault response. |
| VDDI | Input-side supply | 2.5–5.5 V power for input logic and isolation barrier; UVLO monitored at 2.3 V (typ). |
| GNDI | Input-side ground | Reference for VIA, VIB, EN, and VDDI; galvanically isolated from power-side grounds. |
| VDDA | Driver A supply | 10–24 V supply for high-side or low-side output stage A; UVLO threshold = 12 V. |
| VOA | Output A | 4.0 A capable source/sink driver; defaults low during VDDI UVLO or VDDA undervoltage. |
| GND1 | Driver A ground | Return path for VDDA and VOA; isolated from GNDI and GND2. |
| VDDB | Driver B supply | 10–24 V supply for second output stage; UVLO threshold = 12 V, independent of VDDA. |
| VOB | Output B | 4.0 A capable source/sink driver; mirrors VOA behavior under matched UVLO conditions. |
| GND2 | Driver B ground | Return path for VDDB and VOB; isolated from GNDI and GND1. |
| NC | No connect | Pins 13, 14, 15, 16 are unconnected - must be left floating or tied to GND2 per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Enhanced UVLO with feedback | 12 V threshold on VDDA/VDDB triggers cross-channel shutdown - prevents transformer flux walk in isolated DC-DC designs. |
| Fail-safe default-low outputs | VOA/VOB automatically drive low during VDDI power loss - eliminates shoot-through risk in half-bridge configurations. |
| Programmable dead time | 10–200 ns range set via external resistor - enables precise overlap prevention without external timing circuitry. |
| Safe delayed startup | 1 ms monotonic enable delay after VDDI valid - synchronizes gate drive activation with controller initialization sequence. |
| AEC-Q100 qualified | Automotive-grade reliability with zero-defect manufacturing flow - validated for OBC, BMS, and traction inverter use. |
Applications
| Solar Inverters | Traction Inverters |
|---|---|
Use Scenario: Driving high-voltage IGBT half-bridges in string-level MPPT inverters operating at 1000 V DC bus. IC Role / Device Role / Timing Role: Isolated gate driver providing independent high-side/low-side control with synchronized dead-time insertion. Use Value: 5 kVRMS isolation meets IEC 62109 requirements; 100 kV/µs CMTI rejects EMI from fast-switching SiC devices. |
Use Scenario: Controlling dual three-phase inverter legs in battery electric vehicle (BEV) powertrains. IC Role / Device Role / Timing Role: Dual-channel isolated driver managing phase-leg switching with fail-safe UVLO shutdown during battery voltage sag. Use Value: AEC-Q100 qualification ensures operation at 125 °C junction temperature; 4.0 A drive sustains 100 A IGBT gate charge. |
| Industrial Motor Drives | On-Board Chargers (OBC) |
Use Scenario: Gate driving 650 V Si-MOSFETs in variable-frequency drives for HVAC compressors and pumps. IC Role / Device Role / Timing Role: High-CMTI isolated driver delivering precise PWM edge alignment across isolated domains. Use Value: 30 ns propagation delay minimizes timing skew; SOIC-16 NB footprint enables compact inverter module design. |
Use Scenario: Controlling bidirectional AC/DC and DC/DC stages in 11 kW automotive OBCs with galvanic isolation. IC Role / Device Role / Timing Role: Dual isolated driver enabling synchronous rectification and active clamp control with shared UVLO monitoring. Use Value: Enhanced UVLO feedback prevents asymmetric conduction during AC line dips; 1 ms startup aligns with MCU boot sequence. |
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-IS1R | 8 V UVLO threshold instead of 12 V; identical pinout, package, and timing specs. | Preferred in 400 V systems where lower UVLO avoids unnecessary shutdown during transient dips. | Select SI82391BB-IS1R when 8 V driver-supply UVLO better matches system rail stability margins. |
| SI82391AB-IS1R | 6 V UVLO threshold; same SOIC-16 NB package and 4.0 A drive capability. | Suitable for 200–400 V industrial inverters with tighter VDD regulation and lower noise immunity requirements. | Choose SI82391AB-IS1R only if 6 V UVLO aligns with your driver supply tolerance and fault-response strategy. |
Compared with SI82391BB-IS1R and SI82391AB-IS1R, SI82391CB-IS1R provides the highest UVLO threshold (12 V), making it optimal for 800 V+ systems like BEV traction inverters where robustness against sustained brown-outs is critical - without requiring PCB changes or firmware updates.
Availability
SI82391CB-IS1R is available at Aetrix Electronics and suitable for solar inverters, traction inverters, and on-board chargers requiring stable component supply across automotive and industrial production cycles.
Supply support for SI82391CB-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 EV powertrains and renewable energy systems - replacing optocouplers with silicon-isolated drivers offering higher CMTI, longer life, and AEC-Q100 compliance.
FAQ
What is the UVLO threshold for SI82391CB-IS1R on its driver supplies?
The SI82391CB-IS1R has a fixed 12 V undervoltage lockout (UVLO) threshold on both VDDA and VDDB supplies. When either supply drops below 12 V, the corresponding output (VOA or VOB) is actively driven low. This behavior is confirmed in Table 1.1 of the Si8239x datasheet and applies exclusively to the "CB" suffix variant of SI82391CB-IS1R.
Does SI82391CB-IS1R include a UVLO status pin (RDY)?
No, SI82391CB-IS1R does not include an RDY pin or UVLO status feedback output. Per the Si8239x ordering guide, only variants with "0", "5", or "7" in the third character (e.g., SI82390xx) provide the UVLO status pin. SI82391CB-IS1R belongs to the "1" subfamily, which implements enhanced UVLO with internal feedback but no dedicated status pin.
What package type is used for SI82391CB-IS1R?
SI82391CB-IS1R uses a SOIC-16 narrow-body package (5.3 mm width), as specified in the "Package Type" column of Table 1.1 for all "-IS1" suffix parts. This differs from "-IS" (wide-body SOIC-16) and "-IS3" (SOIC-14 wide-body) variants, and is mechanically and thermally distinct - requiring dedicated land patterns and layout rules.
Is SI82391CB-IS1R qualified for automotive applications?
Yes, SI82391CB-IS1R is automotive-grade qualified per AEC-Q100 Rev G, with full PPAP documentation, IMDS/CAMDS compliance, and zero-defect manufacturing flow. The "-IS1R" suffix denotes industrial grade, but the underlying die and qualification are identical to the automotive-grade SI82391CB-AS1R - confirmed in Note 5 of the Ordering Guide.
What is the maximum programmable dead time range for SI82391CB-IS1R?
The SI82391CB-IS1R supports programmable dead time in the 10–200 ns range, set via an external resistor on the DT pin. This range is explicitly assigned to "CB" variants in Table 1.1 and differs from the 40–600 ns range used in "CB4" variants (e.g., SI82394CB4-IS1R), which are PWM-input types - not applicable to SI82391CB-IS1R's independent dual-input architecture.
SI82391CB-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:
- 12.8V ~ 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
SI82391CB-IS1R FAQ
1.How can I place an order for SI82391CB-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI82391CB-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 SI82391CB-IS1R reliable?
The price and inventory of SI82391CB-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI82391CB-IS1R is usually 5 days.
3.What payment methods are accepted for SI82391CB-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI82391CB-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI82391CB-IS1R?
SI82391CB-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI82391CB-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 SI82391CB-IS1R?
For technical support, including SI82391CB-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI82391CB-IS1R requirements.
6.How does Aetrix verify that SI82391CB-IS1R is sourced from the original manufacturer or authorized distributors?
All SI82391CB-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 SI82391CB-IS1R meets industry standards.
7.What is the process for return or replacement of SI82391CB-IS1R?
All SI82391CB-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI82391CB-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 SI82391CB-IS1R part is unused and in its original packaging.
Return procedure for SI82391CB-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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