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Skyworks Solutions Inc. SI8232BD-B-ISR
- Part No.:
- SI8232BD-B-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8232BD-B-ISR.pdf
- Description:
- DGTL ISO 5KV 2CH GATE DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,935
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Product details
Overview
SI8232BD-B-ISR from Silicon Labs is a dual-channel isolated gate driver IC with 0.5 A peak output current per channel, 5 kVRMS input-to-output isolation (wide-body SOIC-16), 60 ns max propagation delay, and TTL-compatible inputs with 400 mV hysteresis. It operates from –40 °C to +125 °C and is used in isolated half-bridge MOSFET/IGBT drive circuits for solar inverters and motor control.
For engineers reviewing the SI8232BD-B-ISR datasheet, SI8232BD-B-ISR pinout, SI8232BD-B-ISR application, or SI8232BD-B-ISR equivalent, this page delivers verified technical context, package mapping, functional truth table behavior, safety certification details, and real-world design implications for high-reliability isolated gate drive systems.
Technical Context
The SI8232BD-B-ISR implements two independent RF-modulated isolated channels using Silicon Labs' proprietary silicon isolation barrier-no optocoupler or transformer required. Each channel features separate input (VIA/VIB) and output (VOA/VOB) supply domains (VDDI, VDDA, VDDB), enabling floating high-side and independent low-side gate drive with reinforced insulation.
Unlike HS/LS variants (e.g., Si8230), the SI8232BD-B-ISR lacks overlap protection and programmable dead time; its truth table shows immediate output transitions on input changes. It supports up to 8 MHz switching frequency and exhibits >45 kV/µs common-mode transient immunity (CMTI) at 1500 VCM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS (1 min, UL 1577); validated for wide-body SOIC-16 package only |
| Peak Output Current | 0.5 A per channel (sink); sufficient for driving MOSFETs with Qg ≤ 25 nC at 350 kHz |
| Propagation Delay | ≤60 ns (max); enables precise timing control in high-frequency half-bridge topologies |
| Input Hysteresis | 400 mV; rejects noise on TTL-level control signals without external Schmitt triggers |
| Operating Temperature | –40 °C to +125 °C ambient; supports industrial and solar inverter environments |
| CMTI | >45 kV/µs; maintains signal integrity during fast dV/dt transients in power stage switching |
| Supply Voltage Range | VDDI: 2.7–5.5 V; VDDA/VDDB: 6.5–24 V; allows flexible biasing across isolated domains |
Pinout & Package
SI8232BD-B-ISR uses a 16-pin wide-body SOIC (WBSOIC-16) package with 8.0 mm creepage/clearance, rated for 5 kVRMS isolation. Pin 1 is marked with a dot; pins 1–8 form the input-side domain, pins 9–16 the output-side domain.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Input-side terminals (GNDI, VIA, VIB, VDDI, DISABLE) | Form isolated input domain: logic inputs, enable control, and input ground/power |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side terminals (GNDA, VOA, GNDB, VOB, VDDA, VDDB) | Form dual isolated output domains: each channel has dedicated ground, output, and supply |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated channels | Enables fully floating gate drive for two discrete switches-no shared reference or cross-talk risk |
| RF-based silicon isolation | Eliminates LED aging and CTR degradation; provides stable timing over temperature and lifetime |
| TTL-compatible inputs with hysteresis | Direct interface to microcontrollers/FPGAs without level-shifting or external noise filtering |
| Reinforced insulation certification | UL 1577 (5 kVRMS), VDE 0884-5, CSA 5A, CQC GB4943.1-meets IEC 62368-1 system requirements |
| High CMTI (>45 kV/µs) | Prevents false triggering during fast-switching events in 650 V/1200 V IGBT/MOSFET bridges |
Applications
| Solar Inverters | Motor Control Systems |
|---|---|
Use Scenario: Isolated gate drive for dual N-channel MOSFETs in DC-AC H-bridge stages of string inverters. IC Role / Device Role / Timing Role: Dual-channel isolated driver providing independent, noise-immune turn-on/turn-off control for high-side and low-side switches. Use Value: 5 kVRMS isolation meets IEC 62109 safety requirements; 60 ns propagation delay enables <100 ns dead-time margins at 50 kHz switching. |
Use Scenario: Gate drive for three-phase inverter legs in HVAC compressors and industrial servo drives. IC Role / Device Role / Timing Role: Dual isolated driver per leg (six total) delivering synchronized, jitter-free switching signals to upper/lower MOSFETs. Use Value: >45 kV/µs CMTI prevents misfiring during bus voltage transients; –40 °C to +125 °C rating supports sealed motor enclosure operation. |
| Isolated DC-DC Converters | Plasma Display Drivers |
Use Scenario: Driving synchronous rectifiers and primary-side switches in isolated flyback or LLC resonant converters. IC Role / Device Role / Timing Role: Provides galvanically isolated, low-jitter gate signals across primary-secondary boundary with minimal propagation skew. Use Value: 0.5 A output current supports MOSFETs with gate charge ≤25 nC; dual-channel layout reduces component count vs. two single-channel isolators. |
Use Scenario: Row/column address switching in AC plasma display panels requiring high-voltage, high-speed digital isolation. IC Role / Device Role / Timing Role: Dual isolated driver controlling sustain and address electrode drivers with precise edge timing. Use Value: 8 MHz max switching frequency supports 200+ kHz panel refresh rates; wide SOIC package withstands high-voltage PCB spacing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel isolated gate drive applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8232AD-B-ISR | Same pinout and function, but rated for 2.5 kVRMS isolation (narrow-body SOIC-16) | Suitable for lower-isolation systems (e.g., non-hazardous secondary-side control); not certified for reinforced insulation in mains-connected equipment | Select when 2.5 kVRMS meets safety requirements and board space is constrained by narrow-body footprint |
| ISO5852SMDR | Texas Instruments part; 5.7 kVRMS, 2.5 A output, integrated Miller clamp; requires external dead-time control | Better suited for high-current IGBTs; lacks native dual-channel independence-outputs share common ground reference | Choose when higher drive strength and Miller clamping are needed, and system-level dead-time management is available |
Compared with Si8232AD-B-ISR, SI8232BD-B-ISR provides 2× higher isolation for grid-tied applications; compared with ISO5852SMDR, it offers true dual-channel independence and simpler timing control-but at lower peak current and no Miller clamp.
Availability
SI8232BD-B-ISR is available at Aetrix Electronics and suitable for solar inverters, motor control systems, and isolated dc-dc power supplies requiring stable component supply, long-term lifecycle support, and certified reinforced insulation.
Supply support for SI8232BD-B-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
Silicon Labs is a fabless semiconductor company specializing in precision timing, isolation, and mixed-signal ICs for industrial, automotive, and communications markets.
The Si823x family was designed to replace optocoupler-based gate drivers with robust, high-speed, temperature-stable silicon-isolated alternatives for high-reliability power conversion systems.
FAQ
What is the isolation voltage rating of the SI8232BD-B-ISR?
The SI8232BD-B-ISR is rated for 5 kVRMS input-to-output isolation (1 minute, UL 1577), validated specifically for the wide-body SOIC-16 package. This rating is supported by VDE 0884-5, CSA Component Notice 5A, and CQC GB4943.1 certifications-making it suitable for reinforced insulation in mains-connected equipment like solar inverters and industrial motor drives.
Does the SI8232BD-B-ISR support programmable dead time?
No, the SI8232BD-B-ISR does not support programmable dead time or overlap protection. As a dual-driver variant (per Table 9 in the datasheet), it implements immediate output transitions on input changes-unlike HS/LS versions (e.g., Si8230/Si8233). Dead time must be implemented externally in the controller logic or gate network when used in half-bridge configurations.
What are the supply voltage requirements for SI8232BD-B-ISR?
The SI8232BD-B-ISR requires three independent supplies: VDDI (2.7–5.5 V) for the input side, and VDDA/VDDB (6.5–24 V) for each output channel. All supplies must be decoupled with low-ESR capacitors placed near their respective pins. VDDA and VDDB may be tied together only if both output channels drive switches referenced to the same ground potential.
Can SI8232BD-B-ISR drive IGBTs directly?
The SI8232BD-B-ISR can drive small- to medium-power IGBTs with gate charge ≤25 nC at frequencies up to 350 kHz, based on its 0.5 A peak sink current and 2.7 Ω source resistance (typical). For larger IGBTs requiring >1 A peak drive or Miller clamping, a discrete buffer stage or higher-current isolator (e.g., Si8235) is recommended.
Is SI8232BD-B-ISR AEC-Q100 qualified?
No-AEC-Q100 qualification applies only to the Si8231/4/5/6/7/8 variants marked with "-A" suffix (e.g., SI8232AD-B-ISR-A). The SI8232BD-B-ISR is industrial-grade (–40 °C to +125 °C) and certified for safety standards (UL, VDE, CSA, CQC), but it is not automotive-qualified. Use SI8232AD-B-ISR-A for automotive traction inverter or onboard charger designs.
SI8232BD-B-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:
- Obsolete
- 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-B-ISR FAQ
1.How can I place an order for SI8232BD-B-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8232BD-B-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-B-ISR reliable?
The price and inventory of SI8232BD-B-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-B-ISR is usually 5 days.
3.What payment methods are accepted for SI8232BD-B-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8232BD-B-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8232BD-B-ISR?
SI8232BD-B-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8232BD-B-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-B-ISR?
For technical support, including SI8232BD-B-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8232BD-B-ISR requirements.
6.How does Aetrix verify that SI8232BD-B-ISR is sourced from the original manufacturer or authorized distributors?
All SI8232BD-B-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-B-ISR meets industry standards.
7.What is the process for return or replacement of SI8232BD-B-ISR?
All SI8232BD-B-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8232BD-B-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-B-ISR part is unused and in its original packaging.
Return procedure for SI8232BD-B-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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