My Inquiry
My Account
Skyworks Solutions Inc. SI8231BB-D-IS1
- Part No.:
- SI8231BB-D-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8231BB-D-IS1.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,449
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI8231BB-D-IS1 from Skyworks Solutions is a high-side/low-side isolated gate driver IC with PWM input configuration, 0.5 A peak output current, 2.5 kVRMS isolation rating, and SOIC-16 narrow body package. It implements RF-based silicon isolation for robust noise immunity and is designed for half-bridge MOSFET/IGBT drive in power converters and motor control systems.
For engineers reviewing the SI8231BB-D-IS1 datasheet, SI8231BB-D-IS1 pinout, SI8231BB-D-IS1 application, or SI8231BB-D-IS1 equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed automotive-grade alternatives, and supply-chain support details specific to this exact part number.
Technical Context
The SI8231BB-D-IS1 integrates two independent isolated drivers in one SOIC-16 narrow body package, using Skyworks' proprietary RF-modulated semiconductor isolation barrier (not optocoupler-based). Its single PWM input controls complementary high-side and low-side outputs with built-in programmable dead time and overlap protection logic.
It features separate undervoltage lockout (UVLO) on input (VDDI), high-side (VDDA), and low-side (VDDB) supplies - each with 8 V turn-on threshold - and supports up to 8 MHz switching frequency. Output propagation delay is ≤45 ns with <1 ns skew between channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2.5 kVRMS per UL1577 - enables safe operation across 1500 VDC bridge topologies with reinforced insulation compliance |
| Peak Output Current | 0.5 A - sufficient to drive medium-power MOSFETs (e.g., Qg ≤ 30 nC at 12 V) without external buffers |
| Propagation Delay | ≤45 ns - ensures tight timing control in high-frequency half-bridge inverters (e.g., >100 kHz solar MPPT stages) |
| UVLO Threshold | 8 V (VDDI/VDDA/VDDB) - prevents erratic switching during brown-out conditions in industrial 12–24 V rail systems |
| Input Type | PWM-compatible TTL-level input - accepts standard microcontroller or PWM controller outputs without level-shifting |
| Switching Frequency | Up to 8 MHz - supports resonant LLC and GaN-based topologies requiring fast edge rates and minimal dead time uncertainty |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial ambient environments |
Pinout & Package
SI8231BB-D-IS1 uses a RoHS-compliant SOIC-16 narrow body package (5.3 mm width, 10.3 mm length, 2.35 mm height) with creepage ≥5.5 mm and clearance ≥5.0 mm per IEC 60664-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Input-side ground and supply | GNDI and VDDI pins provide isolated logic-side power and reference; VDDI powers internal RF transmitter and PWM decoder |
| 9, 10 | PWM input and disable control | PWM pin accepts TTL-level pulse train; DISABLE pin forces both outputs low when high - critical for fault shutdown in motor drives |
| 11, 12, 13, 14 | Output-side supplies and grounds | VDDA/GNDA power high-side driver; VDDB/GNDB power low-side driver - enabling independent floating rail operation |
| 15, 16 | Complementary outputs | VOA (high-side) and VOB (low-side) deliver anti-phase gate signals with programmable dead time - directly interfaces to MOSFET gates in half-bridge |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation barrier | Eliminates LED aging and CMTI limitations of optocouplers; achieves >100 kV/µs common-mode transient immunity |
| Programmable dead time | Configurable via external resistor (RDT) from ~400 ps to >1 µs - prevents shoot-through in SiC/GaN half-bridges without MCU intervention |
| Independent UVLO per supply rail | Ensures safe output state (both low) if any supply drops below 8 V - avoids partial conduction and device destruction in unbalanced power domains |
| TTL-compatible PWM input | Direct interface with standard PWM controllers (e.g., UC384x, UCC27xx) or MCU timers - no external logic or level shifters required |
| AEC-Q100 qualified variant available | SI8231BB-AS1 shares identical pinout and electrical behavior - enables drop-in qualification upgrade for automotive OBC and traction inverter designs |
Applications
| Industrial Motor Control | Solar Inverters |
|---|---|
Use Scenario: Driving IGBTs in 3-phase variable-frequency drives for HVAC compressors and pumps. IC Role / Device Role / Timing Role: High-side/low-side gate driver providing isolated, synchronized, dead-time-controlled gate signals to upper/lower IGBTs in each leg. Use Value: 45 ns propagation delay and <1 ns channel-to-channel skew enable precise 16 kHz PWM control with minimal distortion and thermal stress. |
Use Scenario: Controlling MOSFETs in DC-AC H-bridge stage of string inverters (3–10 kW). IC Role / Device Role / Timing Role: Isolated PWM gate driver delivering complementary outputs to high-voltage half-bridge switches with reinforced 2.5 kVRMS isolation. Use Value: 2.5 kVRMS isolation meets IEC 62109 requirements for photovoltaic system safety; SOIC-16 narrow body fits dense PCB layouts. |
| Onboard EV Chargers | Industrial DC-DC Converters |
Use Scenario: Gate driving Si MOSFETs in dual-active-bridge (DAB) topology for 3.3–22 kW AC/DC conversion in BEV charging systems. IC Role / Device Role / Timing Role: Isolated PWM driver enabling synchronous rectification and zero-voltage switching control across primary/secondary sides. Use Value: AEC-Q100 qualified alternative (SI8231BB-AS1) allows direct qualification reuse; 8 MHz max frequency supports advanced DAB modulation schemes. |
Use Scenario: Driving GaN HEMTs in isolated 48 V–12 V bidirectional DC-DC modules for server power distribution. IC Role / Device Role / Timing Role: Fast, low-jitter isolated driver delivering clean gate edges to minimize switching losses in high-frequency (>500 kHz) resonant converters. Use Value: 0.5 A peak current and <45 ns delay preserve GaN's efficiency advantage; SOIC-16 narrow body simplifies thermal management vs. larger packages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side/low-side isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8231BD-D-IS | 5.0 kVRMS isolation, SOIC-16 wide body package, same 0.5 A output and PWM input | Required where reinforced insulation to 5 kVRMS is mandated (e.g., medical 2 MOPP, industrial 600 VAC mains) | Select SI8231BD-D-IS when higher isolation voltage is needed; board layout must accommodate wider 10.3 mm SOIC footprint |
| SI8231BB-AS1 | Identical electrical specs and pinout; AEC-Q100 qualified, automotive PPAP documentation, IMDS/CAMDS support | Required for production automotive systems (OBC, BMS, traction inverters) needing full automotive traceability | Choose SI8231BB-AS1 for automotive programs; no PCB changes needed - direct replacement with enhanced process controls |
Compared with SI8231BD-D-IS, SI8231BB-D-IS1 offers lower isolation (2.5 vs. 5.0 kVRMS) but smaller SOIC-16 narrow body footprint; compared with SI8231BB-AS1, it lacks automotive qualification but provides identical performance at lower cost for industrial use.
Availability
SI8231BB-D-IS1 is available at Aetrix Electronics and suitable for industrial motor control, solar inverters, onboard EV chargers, and isolated DC-DC converters requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across temperature and voltage ranges.
Supply support for SI8231BB-D-IS1 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 high-reliability applications.
The Si823x family was engineered specifically for isolated gate driving in high-efficiency power conversion systems - emphasizing fast propagation, programmable dead time, and robust RF isolation to replace aging optocoupler-based solutions.
FAQ
What is the isolation voltage rating of SI8231BB-D-IS1?
The SI8231BB-D-IS1 has a certified 2.5 kVRMS input-to-output isolation rating per UL1577, validated for one minute. This rating supports use in 1500 VDC bridge circuits and meets reinforced insulation requirements under IEC 62368-1 for industrial power systems. The isolation barrier uses Skyworks' proprietary silicon-dielectric technology, not optocoupler-based construction.
Does SI8231BB-D-IS1 support programmable dead time?
Yes, SI8231BB-D-IS1 supports programmable dead time via an external resistor (RDT) connected from the DT pin to ground. Using Equation 1 (DT ≈ 10 × RDT), dead time can be set from ~400 ps (DT pin tied to VDDI or floating) up to >1 µs. This feature prevents shoot-through in half-bridge configurations and is active on all output transitions, including overlap recovery.
What is the peak output current capability of SI8231BB-D-IS1?
SI8231BB-D-IS1 delivers 0.5 A peak source/sink current per output (VOA and VOB). This is sufficient to drive MOSFETs with gate charge ≤30 nC at 12 V supply, typical for 30–60 A IGBTs or medium-power Si/SiC FETs in 1–10 kW power stages. Output current remains stable across –40 °C to +125 °C ambient.
Can SI8231BB-D-IS1 be used in automotive applications?
While SI8231BB-D-IS1 is an industrial-grade part, its automotive-qualified counterpart SI8231BB-AS1 shares identical pinout, electrical specs, and thermal performance. SI8231BB-AS1 adds AEC-Q100 qualification, AIAG-compliant PPAP, and IMDS/CAMDS documentation - making it the required choice for production automotive systems like onboard chargers and traction inverters.
What package type does SI8231BB-D-IS1 use?
SI8231BB-D-IS1 uses a RoHS-compliant SOIC-16 narrow body package (5.3 mm width, 10.3 mm length). It features creepage ≥5.5 mm and clearance ≥5.0 mm, meeting IEC 60664-1 requirements for 2.5 kVRMS working voltage. This compact footprint enables high-density PCB layouts in space-constrained power modules and inverters.
SI8231BB-D-IS1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Number of Channels:
- 2
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 20kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 60ns, 60ns
- Pulse Width Distortion (Max):
- 5.6ns
- Rise / Fall Time (Typ):
- 20ns, 20ns (Max)
- Current - Output High, Low:
- 250mA, 500mA
- Current - Peak Output:
- 500mA
- Voltage - Forward (Vf) (Typ):
- -
- Current - DC Forward (If) (Max):
- -
- Voltage - Output Supply:
- 9.4V ~ 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
SI8231BB-D-IS1 FAQ
1.How can I place an order for SI8231BB-D-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8231BB-D-IS1 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 SI8231BB-D-IS1 reliable?
The price and inventory of SI8231BB-D-IS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8231BB-D-IS1 is usually 5 days.
3.What payment methods are accepted for SI8231BB-D-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8231BB-D-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8231BB-D-IS1?
SI8231BB-D-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8231BB-D-IS1 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 SI8231BB-D-IS1?
For technical support, including SI8231BB-D-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8231BB-D-IS1 requirements.
6.How does Aetrix verify that SI8231BB-D-IS1 is sourced from the original manufacturer or authorized distributors?
All SI8231BB-D-IS1 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 SI8231BB-D-IS1 meets industry standards.
7.What is the process for return or replacement of SI8231BB-D-IS1?
All SI8231BB-D-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8231BB-D-IS1, 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 SI8231BB-D-IS1 part is unused and in its original packaging.
Return procedure for SI8231BB-D-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8231BB-D-IS1 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…
