My Inquiry
My Account
Skyworks Solutions Inc. SI82391CB-AS1R
- Part No.:
- SI82391CB-AS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI82391CB-AS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,101
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI82391CB-AS1R from Skyworks Solutions is a dual-channel isolated gate driver IC designed for high-side/low-side MOSFET and IGBT control in automotive and industrial 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 12 V threshold, programmable dead time (10–200 ns), and fail-safe low-default outputs during VDDI power-down - used in traction inverters and on-board chargers.
For engineers reviewing the SI82391CB-AS1R datasheet, SI82391CB-AS1R pinout, SI82391CB-AS1R application, or SI82391CB-AS1R equivalent, key selection considerations include its AEC-Q100 qualification, SOIC-16 wide-body package, independent VIA/VIB inputs, absence of UVLO status pin, and compatibility with isolated DC-DC supplies requiring robust CMTI (>100 kV/µs) and safe startup timing.
Technical Context
The SI82391CB-AS1R implements RF-based silicon isolation with two independent isolated channels, each featuring TTL-compatible high-true inputs (VIA, VIB), separate driver-side supplies (VDDA, VDDB), and fail-safe logic that forces both outputs low when VDDI is unpowered. Its architecture avoids optocoupler limitations while enabling precise timing control via programmable dead time and deglitch filtering.
It integrates enhanced UVLO monitoring per output stage (12 V threshold), automatic shutdown on UVLO detection, and an active-high EN pin with internal ESD protection. Startup includes a guaranteed 1 ms delayed initialization sequence to ensure monotonic output behavior before controller handoff - critical for transformer-coupled topologies where flux imbalance must be avoided.
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 automotive systems. |
| Peak Output Current | 4.0 A - sufficient to directly drive high-gate-charge SiC MOSFETs and IGBTs without external buffers in 10–100 kHz switching applications. |
| Input Supply Range | 2.5 V–5.5 V VDDI - compatible with modern low-voltage microcontrollers and ASIL-B domain controllers. |
| Propagation Delay | 30 ns - ensures tight timing alignment between high-side and low-side drivers, minimizing shoot-through risk in half-bridge configurations. |
| Common-Mode Transient Immunity | 100 kV/µs - maintains signal integrity in noisy high-dV/dt environments such as motor drives and solar inverters. |
| Operating Temperature | –40 °C to +125 °C - meets extended temperature requirements for under-hood automotive electronics and industrial motor control. |
| UVLO Threshold | 12 V on VDDA/VDDB - provides robust gate drive disablement during brown-out conditions in 12 V auxiliary rail systems. |
Pinout & Package
SI82391CB-AS1R is housed in a RoHS-compliant SOIC-16 wide-body package (7.5 mm body width, 10.3 mm length) with creepage/clearance optimized for reinforced insulation. Pin layout follows standard Skyworks Si8239x pinout for 16-pin WB variants.
| 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 - used for system-level fault shutdown. |
| VDDI | Input-side supply | 2.5 V–5.5 V supply powering input logic and isolation barrier; powers up via internal regulator. |
| 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; enables 4 A sink/source capability. |
| VOA | Output A | Isolated gate drive output for external MOSFET/IGBT; defaults low during VDDI undervoltage. |
| GND1 | Driver A ground | Return path for VDDA and VOA; electrically isolated from GNDI and GND2. |
| VDDB | Driver B supply | 10 V–24 V supply for second output stage; independent of VDDA to support split-rail or bootstrap configurations. |
| VOB | Output B | Isolated gate drive output for complementary switch; synchronized with VOA but independently UVLO-monitored. |
| GND2 | Driver B ground | Return path for VDDB and VOB; isolated from GNDI and GND1 to maintain channel separation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual isolated drivers | Two fully independent 4 A gate drivers in one SOIC-16 WB package - reduces PCB area and interconnect complexity vs. discrete opto+driver solutions. |
| Enhanced UVLO with feedback | 12 V UVLO threshold per output with cross-channel fault reporting - prevents asymmetric conduction in transformer-coupled topologies by forcing both outputs low if either VDDA or VDDB drops out. |
| Programmable dead time | 10–200 ns adjustable via external resistor - eliminates need for external delay networks while maintaining precise overlap protection in half-bridge designs. |
| Safe delayed startup | 1 ms guaranteed startup delay from VDDI valid to first valid output - ensures controller synchronization and avoids transient glitches during power-up sequences. |
| Fail-safe default state | Both VOA and VOB drive low when VDDI is absent - prevents unintended device turn-on in loss-of-control scenarios, meeting ASIL-B functional safety expectations. |
| High CMTI immunity | 100 kV/µs common-mode transient immunity - sustains reliable operation in high-noise EV power stages with fast-switching SiC devices. |
Applications
| On-board Charger (OBC) | Traction Inverter |
|---|---|
Use Scenario: Bidirectional AC/DC and DC/DC conversion in EV charging systems with 650 V SiC MOSFETs. IC Role / Device Role / Timing Role: High-side/low-side gate driver for interleaved totem-pole PFC and isolated DC-DC stages. Use Value: 4 A peak drive current and 30 ns propagation delay enable clean switching at 100 kHz, reducing conduction losses and EMI in compact OBC modules. |
Use Scenario: Three-phase motor control in battery electric vehicles using 750 V IGBTs or SiC modules. IC Role / Device Role / Timing Role: Isolated gate driver for half-bridge legs with independent UVLO monitoring per phase leg. Use Value: Enhanced UVLO feedback prevents flux walk in transformer-isolated gate supplies, improving reliability in high-voltage traction systems. |
| Battery Management System (BMS) | Solar Inverter |
Use Scenario: Active cell balancing and contactor control in 400–800 V battery packs with high-side switching requirements. IC Role / Device Role / Timing Role: Isolated driver for high-side N-channel MOSFETs in precision balancing circuits. Use Value: 2.5 V VDDI compatibility allows direct interface with low-power MCU GPIOs, eliminating level-shifting components. |
Use Scenario: Transformerless string inverters with bipolar PV array configurations requiring reinforced isolation. IC Role / Device Role / Timing Role: Dual-channel driver for H-bridge anti-islanding protection switches and MPPT stage MOSFETs. Use Value: 5 kVRMS isolation rating and AEC-Q100 qualification support long-term field reliability in outdoor-rated solar installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8220BD-AS1R | Single-channel, 4 A output, no UVLO feedback, 10–200 ns dead time, SOIC-16 WB | Lacks dual-channel integration and enhanced UVLO cross-monitoring - suitable only for single-leg or non-transformer-coupled topologies. | Select when space constraints allow two single-channel drivers and transformer flux balance is not required. |
| UCC5390SCDWR | Texas Instruments part; 4 A dual-channel, 5.7 kVRMS isolation, no programmable dead time, 35 ns delay, SOIC-16 WB | Uses capacitive isolation; lacks deglitch filtering and failsafe low-default on VDDI loss - requires external supervision circuitry for ASIL-B compliance. | Choose for TI ecosystem designs where capacitive isolation preference exists and external UVLO management is acceptable. |
Compared with SI82391CB-AS1R, SI8220BD-AS1R offers lower integration but simpler timing control, while UCC5390SCDWR provides higher isolation rating but requires additional fault-handling circuitry to match SI82391CB-AS1R's built-in safety features for automotive traction systems.
Availability
SI82391CB-AS1R 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 and industrial power design ramps.
Supply support for SI82391CB-AS1R 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 for automotive, industrial, and wireless markets.
The Si8239x family was developed to replace aging optocoupler-based gate drivers with robust, high-speed, AEC-Q100-qualified silicon-isolated alternatives for next-generation EV power electronics and high-reliability industrial motor drives.
FAQ
What is the isolation voltage rating of the SI82391CB-AS1R?
The SI82391CB-AS1R is rated for 5 kVRMS isolation withstand voltage per UL 1577 and VDE 0884-10 standards. This reinforced insulation rating applies across the full operating temperature range (–40 °C to +125 °C) and supports compliance with IEC62368-1 for end-equipment safety certification in automotive and industrial applications.
Does the SI82391CB-AS1R support bootstrap gate drive configurations?
No - the SI82391CB-AS1R is not recommended for bootstrap configurations because its enhanced UVLO feedback mechanism requires independent VDDA and VDDB supplies. Using a shared or bootstrapped supply may cause false UVLO triggering and unintended output disablement. It is intended for transformer-isolated or separately regulated driver rails.
What is the purpose of the EN pin on the SI82391CB-AS1R?
The EN (enable) pin on the SI82391CB-AS1R is an active-high control input that unconditionally forces both VOA and VOB low when deasserted. It provides system-level fault response capability - for example, interfacing with MCU watchdog timers or hardware fault monitors to safely shut down power stages during overtemperature or overcurrent events.
How does the SI82391CB-AS1R handle undervoltage conditions on VDDI?
When VDDI falls below its UVLO threshold, the SI82391CB-AS1R enters a fail-safe state where both VOA and VOB are actively driven low regardless of input states. This behavior persists until VDDI rises above the UVLO+ threshold and the 1 ms delayed startup timer completes - ensuring glitch-free initialization in automotive power systems.
Is the SI82391CB-AS1R pin-compatible with other Si8239x variants?
Yes - the SI82391CB-AS1R shares identical pinout and package (SOIC-16 wide-body) with all other Si8239x devices in the same package variant, including SI82390xx, SI82393xx, and SI82394xx families. Functional differences (e.g., UVLO status pin presence, dead-time range, deglitch option) are implemented internally and do not affect mechanical or electrical pin compatibility.
SI82391CB-AS1R 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):
- -
- 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, UL, VDE
SI82391CB-AS1R FAQ
1.How can I place an order for SI82391CB-AS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI82391CB-AS1R 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-AS1R reliable?
The price and inventory of SI82391CB-AS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI82391CB-AS1R is usually 5 days.
3.What payment methods are accepted for SI82391CB-AS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI82391CB-AS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI82391CB-AS1R?
SI82391CB-AS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI82391CB-AS1R 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-AS1R?
For technical support, including SI82391CB-AS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI82391CB-AS1R requirements.
6.How does Aetrix verify that SI82391CB-AS1R is sourced from the original manufacturer or authorized distributors?
All SI82391CB-AS1R 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-AS1R meets industry standards.
7.What is the process for return or replacement of SI82391CB-AS1R?
All SI82391CB-AS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI82391CB-AS1R, 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-AS1R part is unused and in its original packaging.
Return procedure for SI82391CB-AS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI82391CB-AS1R Tags
.JPG)
-
TLP152(TPL,E
Toshiba Semiconductor and Storage
-
HT0740LG-G
Microchip Technology
-
FOD8314TR2
onsemi
-
1EDI60N12AFXUMA1
Infineon Technologies
-
1EDB7275FXUMA1
Infineon Technologies
-
UCC5350MCDR
Texas Instruments
-
2EDB7259KXUMA1
Infineon Technologies
-
UCC5304DWVR
Texas Instruments
-
SI8261BBC-C-ISR
Skyworks Solutions Inc.
-
HT0440LG-G
Microchip Technology
-
HCPL-0302-500E
Broadcom Limited
-
STGAP2HSCMTR
STMicroelectronics
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
