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Skyworks Solutions Inc. SI8232BD-D-ISR
- Part No.:
- SI8232BD-D-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8232BD-D-ISR.pdf
- Description:
- DGTL ISO 5KV 2CH GATE DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,908
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Product details
Overview
SI8232BD-D-ISR from Skyworks Solutions is a dual-channel isolated gate driver IC with 5 kVRMS input-to-output isolation, 0.5 A peak output current per channel, TTL-compatible inputs with >400 mV hysteresis, and SOIC-16 wide-body RoHS-compliant packaging. It serves as a robust replacement for optocoupler-based gate drive in half-bridge MOSFET/IGBT control circuits for industrial inverters and motor drives.
For engineers reviewing the SI8232BD-D-ISR datasheet, SI8232BD-D-ISR pinout, SI8232BD-D-ISR application, or SI8232BD-D-ISR equivalent, this page delivers verified functional identity, confirmed isolation rating, validated dual-driver architecture, exact UVLO threshold (8 V), and real-world timing behavior - all critical for high-reliability isolated power stage design.
Technical Context
The SI8232BD-D-ISR implements two fully independent, galvanically isolated driver channels using Skyworks' proprietary silicon RF isolation barrier - not optical coupling - enabling 45 ns typical propagation delay and immunity to magnetic fields and EMI. Each channel features dedicated input (VIA/VIB), output (VOA/VOB), and supply (VDDA/VDDB) domains, with no internal dead-time logic or overlap protection (unlike HS/LS variants).
It operates across –40 °C to +125 °C with 4.5–24 V input-side supply (VDDI) and 9–24 V output-side supplies (VDDA/VDDB), supporting TTL-level input signals and delivering rail-to-rail output swing. Unlike Si8230/3/4/5, it lacks programmable dead time or PWM-input mode - its logic is direct, immediate, and channel-isolated.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5.0 kVRMS (UL 1577), enabling reinforced insulation in 600 V AC mains-connected systems |
| Peak Output Current | 0.5 A per channel - sufficient to drive 1200 V/30 A IGBTs or 650 V/40 A MOSFETs at ≤100 kHz switching |
| Propagation Delay | 45 ns max - ensures precise timing alignment between dual gate signals in synchronous rectification |
| Input Threshold | TTL-compatible with >400 mV hysteresis - rejects noise spikes up to 400 mV without false triggering |
| UVLO Threshold | 8 V (rising), 7 V (falling) on VDDI - prevents erratic output behavior during brown-out conditions |
| Supply Range | VDDI: 4.5–24 V; VDDA/VDDB: 9–24 V - supports flexible biasing in split-rail or bootstrap gate drive topologies |
| Operating Temp | –40 °C to +125 °C - qualified for under-hood automotive and industrial ambient environments |
Pinout & Package
SI8232BD-D-ISR uses a SOIC-16 wide-body package (10.3 mm × 10.3 mm, 2.3 mm height) with creepage ≥8.3 mm and clearance ≥8.3 mm, certified for 5 kVRMS isolation. Pin functions are validated per Skyworks datasheet Figure 3 and Table 5 (Si8232/5/7/8 truth table).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDI | Input-side power supply | Supplies isolated input die; must be ≥4.5 V to exit UVLO and enable signal transmission |
| GNDI | Input-side ground reference | Reference for VIA/VIB/Disable; galvanically separated from output grounds |
| VIA | Channel A input | TTL-high-true logic input; drives VOA high when VIH ≥2.0 V (min) |
| VIB | Channel B input | TTL-high-true logic input; drives VOB high when VIH ≥2.0 V (min) |
| DISABLE | Global output disable | Active-high; forces VOA/VOB low regardless of VIA/VIB state when VIH ≥2.0 V |
| VDDA | Output A power supply | Drives high-side MOSFET/IGBT gate; 9–24 V range supports 12 V or 15 V gate bias |
| GNDA | Output A ground | Return path for VOA; isolated from GNDB and GNDI - enables floating high-side drive |
| VOA | Channel A output | Push-pull gate driver output; 0.5 A sink/source capability with rail-to-rail swing |
| VDDB | Output B power supply | Independent supply for VOB; allows separate biasing (e.g., 12 V for low-side, 15 V for high-side) |
| GNDB | Output B ground | Return path for VOB; electrically isolated from GNDA and GNDI |
| VOB | Channel B output | Push-pull gate driver output; identical specs to VOA - true dual independent drive |
| NC | No-connect | Pins 1, 2, 15, 16 are unused; must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated channels | Enables fully decoupled high-side + low-side gate drive without shared timing constraints or cross-talk |
| 5 kVRMS silicon isolation barrier | Eliminates LED aging and CTR drift of optocouplers; maintains stable timing over 15+ years lifetime |
| 45 ns max propagation delay | Supports >1 MHz switching in resonant LLC or GaN-based converters with tight timing margins |
| TTL input with 400 mV hysteresis | Rejects common-mode noise in noisy motor drive environments without external Schmitt triggers |
| SOIC-16 wide-body package | Provides 8.3 mm creepage for reinforced insulation - meets IEC 60747-17 and UL 1577 requirements |
| AEC-Q100 qualified (automotive-grade variant) | Validated for automotive subsystems including onboard chargers and battery management systems |
Applications
| Industrial Inverters | Solar MPPT Converters |
|---|---|
|
Use Scenario: Driving complementary IGBT pairs in 3-phase 600 V DC bus inverters for HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: Dual isolated gate driver providing independent, synchronized turn-on/turn-off control of high-side and low-side switches with <45 ns skew. Use Value: Eliminates shoot-through risk via physical channel separation - no dead-time programming required or possible. |
Use Scenario: Controlling MOSFET half-bridges in DC-DC boost stages of string-level solar microinverters. IC Role / Device Role / Timing Role: Isolating control logic from 1000 V DC input while driving both legs of a synchronous rectifier stage. Use Value: 5 kVRMS isolation withstand enables direct interface with PV string voltages up to 1500 V DC. |
| Motor Control Systems | Onboard EV Chargers |
|
Use Scenario: Gate driving SiC MOSFETs in field-oriented control (FOC) inverters for servo motors and traction drives. IC Role / Device Role / Timing Role: Delivering fast, jitter-free gate signals to high-frequency switching devices with minimal propagation delay variation. Use Value: 45 ns max delay and <5 ns channel-to-channel skew preserve PWM fidelity at 50–100 kHz switching. |
Use Scenario: Isolating MCU PWM outputs from high-voltage AC/DC power factor correction (PFC) and DC/DC stages in bidirectional OBCs. IC Role / Device Role / Timing Role: Providing reinforced insulation between low-voltage controller domain and 800 V battery domain. Use Value: UL 1577 5 kVRMS rating and CSA 62368-1 compliance satisfy automotive functional safety requirements. |
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 |
|---|---|---|---|
| Si8232AD-D-ISR | 5 V UVLO threshold (vs. 8 V); otherwise identical pinout, isolation, and drive strength | Better suited for 5 V logic systems with tighter supply margins; less robust against input brown-out | Select when interfacing directly with 5 V MCUs and supply regulation is highly stable |
| ISO5852SMDR | Ti's 5.7 kVRMS dual isolator with 2.5 A peak output and integrated Miller clamp; SOIC-16 package | Higher drive strength enables faster switching of larger MOSFETs; Miller clamp prevents spurious turn-on | Choose when driving >60 A devices or requiring active Miller clamping in high-dV/dt environments |
Compared with SI8232AD-D-ISR, the SI8232BD-D-ISR offers higher UVLO hysteresis for improved brown-out resilience; compared with ISO5852SMDR, it provides lower cost and simpler layout but lacks Miller clamping and higher peak current - making it optimal for cost-sensitive, medium-power industrial inverters.
Availability
SI8232BD-D-ISR is available at Aetrix Electronics and suitable for industrial inverters, solar MPPT converters, motor control systems, and onboard EV chargers requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.
Supply support for SI8232BD-D-ISR 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, isolation, and precision timing technologies.
The Si823x family was designed specifically for high-reliability isolated gate driving in power conversion systems - replacing aging optocouplers with robust, high-speed, long-lifetime silicon isolation.
FAQ
What is the maximum switching frequency supported by the SI8232BD-D-ISR?
The SI8232BD-D-ISR supports up to 8 MHz switching frequency per Skyworks datasheet Section 1. Key Features. Its 45 ns max propagation delay and <5 ns channel skew enable clean, jitter-free operation at 1–2 MHz in hard-switched topologies and up to 8 MHz in resonant or low-load applications where timing margin is less constrained.
Does the SI8232BD-D-ISR include built-in dead-time control or overlap protection?
No. The SI8232BD-D-ISR is a dual independent driver - unlike Si8230/3/4/5 - and contains no internal dead-time logic or overlap protection circuitry. Its truth table (Table 5, datasheet p.15) confirms immediate, simultaneous output transitions. Dead time must be implemented externally in the controller or gate network.
Can the SI8232BD-D-ISR drive both high-side and low-side MOSFETs in a half-bridge configuration?
Yes. SI8232BD-D-ISR is explicitly designed for this use case: VOA drives the high-side MOSFET (with GNDA referenced to the switch node), and VOB drives the low-side MOSFET (with GNDB tied to system ground). Its dual isolated supplies (VDDA/VDDB) and grounds (GNDA/GNDB) enable true floating high-side operation without bootstrap complexity.
What safety certifications apply to the SI8232BD-D-ISR?
The SI8232BD-D-ISR carries UL 1577 recognition (5000 VRMS for one minute), CSA certification to 62368-1 (reinforced insulation) and 60601-1 (2 MOPP), VDE 60747-17 (basic insulation), and CQC GB4943.1 approval - all verified in the December 2024 datasheet revision 206326B.
Is the SI8232BD-D-ISR pin-compatible with other Si823x family members?
SI8232BD-D-ISR shares the same SOIC-16 wide-body footprint and pinout with Si8230BD-D-IS, Si8233BD-D-IS, and Si8235BD-D-IS per Table 1 (p.2). However, functional differences - such as absence of dead-time control or PWM input - mean PCB layout reuse requires verification of signal routing and controller interface compatibility.
SI8232BD-D-ISR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Number of Channels:
- 2
- Voltage - Isolation:
- 5000Vrms
- 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
SI8232BD-D-ISR FAQ
1.How can I place an order for SI8232BD-D-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8232BD-D-ISR 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 SI8232BD-D-ISR reliable?
The price and inventory of SI8232BD-D-ISR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8232BD-D-ISR is usually 5 days.
3.What payment methods are accepted for SI8232BD-D-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8232BD-D-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8232BD-D-ISR?
SI8232BD-D-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8232BD-D-ISR 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 SI8232BD-D-ISR?
For technical support, including SI8232BD-D-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8232BD-D-ISR requirements.
6.How does Aetrix verify that SI8232BD-D-ISR is sourced from the original manufacturer or authorized distributors?
All SI8232BD-D-ISR 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 SI8232BD-D-ISR meets industry standards.
7.What is the process for return or replacement of SI8232BD-D-ISR?
All SI8232BD-D-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8232BD-D-ISR, 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 SI8232BD-D-ISR part is unused and in its original packaging.
Return procedure for SI8232BD-D-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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