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Skyworks Solutions Inc. SI8232BB-B-ISR
- Part No.:
- SI8232BB-B-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8232BB-B-ISR.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,287
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Product details
Overview
SI8232BB-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 SI8232BB-B-ISR datasheet, SI8232BB-B-ISR pinout, SI8232BB-B-ISR application, or SI8232BB-B-ISR equivalent, key selection criteria include its dual independent isolated outputs (no overlap protection), 0.5 A drive capability, SOIC-16 wide-body package with reinforced insulation, and compatibility with 12–24 V driver supplies in high-noise industrial power stages.
Technical Context
The SI8232BB-B-ISR implements two fully 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 gate drive with ±1500 VDC differential voltage tolerance between outputs.
It lacks programmable dead time and overlap protection (unlike Si8230/1/3/4), supporting direct logic-level dual-drive applications. Its 60 ns max propagation delay and 45 kV/µs CMTI ensure precise timing and noise immunity in fast-switching topologies up to 8 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS (1 min, UL1577); validated for reinforced insulation per IEC 60950-1, IEC 60601-1, and VDE 0884-5 |
| Peak Output Current | 0.5 A per channel (sink), enabling direct drive of low-to-mid-power MOSFETs/IGBTs without external buffers |
| Propagation Delay | ≤60 ns (max), ensuring tight timing control in synchronous rectification and phase-shifted full-bridge converters |
| Common-Mode Transient Immunity | ≥45 kV/µs, maintaining signal integrity during fast dV/dt switching events in high-voltage bus environments |
| Operating Temperature | –40 °C to +125 °C ambient, supporting under-hood automotive and industrial enclosure deployments |
| Input Hysteresis | 400 mV (min), rejecting noise on TTL-level control signals in electrically noisy motor drive PCB layouts |
| Supply Voltage Range | VDDI: 2.7–5.5 V; VDDA/VDDB: 6.5–24 V - decoupled domains allow independent logic and gate-drive rail optimization |
Pinout & Package
SI8232BB-B-ISR is housed in a RoHS-compliant 16-pin wide-body SOIC package (WBSOIC-16) with 8.0 mm creepage/clearance, optimized for 5 kVRMS isolation systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Input-side ground and supply pins | Pins 1–8 form the isolated input domain: GNDI (1), VIA (2), VIB (3), VDDI (4), DISABLE (5), NC (6), NC (7), NC (8) |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side ground and drive pins | Pins 9–16 form the isolated output domain: GNDA (9), VOA (10), VDDA (11), GNDB (12), VOB (13), VDDB (14), NC (15), NC (16) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated channels | Enables fully floating dual gate drives (e.g., two low-side switches or one high-side + one low-side with external timing control) |
| RF-based silicon isolation | Eliminates LED aging and CTR degradation; supports >100-year lifetime and stable timing over temperature and life |
| No internal dead time or overlap protection | Provides deterministic, zero-latency output response - critical for custom PWM schemes and resonant LLC control |
| High CMTI (45 kV/µs) | Prevents false triggering in high-dV/dt environments like 650 V/1200 V SiC-based inverters |
| AEC-Q100 qualified | Validated for automotive-grade reliability (Grade 1: –40 °C to +125 °C junction) |
Applications
| Solar Inverters | Motor Control Systems |
|---|---|
Use Scenario: Isolated gate drive for dual N-channel MOSFETs in string-level DC-DC boost converters and three-phase inverter legs. 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 in hard-switched topologies. Use Value: 60 ns propagation delay matching and 45 kV/µs CMTI prevent shoot-through during fast 100 kHz+ switching in 1000 V DC bus systems. | Use Scenario: Gate driving dual IGBTs in servo amplifier half-bridges for industrial CNC and robotics. IC Role / Device Role / Timing Role: Provides galvanically isolated, TTL-compatible inputs to drive both upper and lower IGBT gates with matched timing. Use Value: 5 kVRMS isolation meets IEC 61800-5-1 reinforced insulation requirements for functional safety in 400 V AC motor drives. |
| Isolated DC-DC Power Supplies | Plasma Displays |
Use Scenario: Driving synchronous rectifiers and primary-side switches in isolated flyback or forward converters with >1 kV input-to-output separation. IC Role / Device Role / Timing Role: Dual isolated driver delivering precise, low-jitter gate signals to secondary-side SR FETs and primary-side MOSFETs. Use Value: Independent VDDA/VDDB supplies allow optimal 5 V gate drive for SR FETs and 12 V for primary MOSFETs - maximizing efficiency across load range. | Use Scenario: High-speed switching of sustain and scan electrode drivers in AC plasma display panels. IC Role / Device Role / Timing Role: Dual-channel isolated gate driver controlling paired high-voltage MOSFETs in X/Y sustain circuitry. Use Value: 8 MHz max switching frequency and 20 ns typical rise/fall time support 200+ kHz sustain pulse generation with minimal distortion. |
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 |
|---|---|---|---|
| Si8232BB-D-IS | Same dual-driver function and 0.5 A rating, but in narrow-body SOIC-16 (2.5 kVRMS isolation, 4.0 mm creepage) | Lower isolation rating limits use to non-safety-critical 250 V AC or SELV systems | Select when board space is constrained and 5 kVRMS is not required; verify creepage compliance per IEC 62368-1 |
| ADuM4223BRIZ | Analog Devices dual isolated driver with 4 A peak output, integrated Miller clamp, and 3.75 kVRMS (SOIC-16WB) | Higher drive strength supports larger gate charges; Miller clamp prevents spurious turn-on in high-dV/dt IGBTs | Choose when driving >100 nC gate charge devices or requiring active Miller clamping in high-reliability industrial inverters |
Compared with Si8232BB-D-IS, SI8232BB-B-ISR provides higher isolation (5 vs. 2.5 kVRMS) and wider creepage for mains-connected equipment; versus ADuM4223BRIZ, it offers lower cost and simpler biasing but lacks Miller clamp and higher drive current.
Availability
SI8232BB-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 SI8232BB-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 high-performance analog-intensive mixed-signal ICs for timing, isolation, wireless, and MCU applications.
The Si823x product line delivers robust, RF-based isolated gate drivers designed specifically for high-reliability industrial and automotive power conversion systems demanding long-life, high-CMTI, and AEC-Q100 qualification.
FAQ
What is the maximum operating frequency supported by the SI8232BB-B-ISR?
The SI8232BB-B-ISR supports up to 8 MHz switching frequency, verified by propagation delay (≤60 ns) and rise/fall time (≤20 ns) specifications. This enables use in high-frequency resonant topologies such as LLC and ZVS converters where precise edge alignment and minimal jitter are critical. The SI8232BB-B-ISR maintains timing accuracy across temperature and supply voltage variations, making it suitable for digitally controlled SMPS designs.
Does the SI8232BB-B-ISR include built-in dead time or overlap protection?
No, the SI8232BB-B-ISR does not include programmable dead time or overlap protection circuitry. As confirmed in Table 9 of the datasheet, Si8232/7 variants are designated "Dual Driver" with no overlap protection or DT control. Timing coordination must be handled externally via controller logic or gate-drive transformer design. This distinguishes SI8232BB-B-ISR from Si8230/1/3/4 variants, which integrate those functions.
What isolation certification standards apply to the SI8232BB-B-ISR?
The SI8232BB-B-ISR is certified to UL 1577 (5000 Vrms), CSA Component Notice 5A (IEC 60950-1, 61010-1, 60601-1), VDE 0884-5 (IEC 60747-5-5), and CQC GB4943.1. These certifications validate its 5 kVRMS reinforced insulation rating in the WBSOIC-16 package, supporting safety-critical applications including medical power supplies and industrial drives requiring double insulation.
Can the SI8232BB-B-ISR drive both high-side and low-side MOSFETs in a half-bridge configuration?
Yes - the SI8232BB-B-ISR can drive both high-side and low-side MOSFETs in a half-bridge, provided external timing control ensures non-overlapping gate signals. Its dual isolated outputs (VOA/VOB) operate independently with separate VDDA/GNDA and VDDB/GNDB domains, allowing one channel to float at high potential while the other references system ground. No internal dead time means precise external PWM coordination is required to prevent shoot-through.
What are the recommended decoupling capacitors for the SI8232BB-B-ISR power supplies?
Silicon Labs recommends low-ESR decoupling capacitors placed as close as possible to each supply pin: 1 µF ceramic + 10–100 µF tantalum or polymer capacitor per domain (VDDI, VDDA, VDDB). This minimizes high-frequency noise and sustains transient current demands during fast gate charging. Layout guidelines specify minimum 8 mm creepage between input and output side traces to maintain 5 kVRMS isolation integrity in the SI8232BB-B-ISR.
SI8232BB-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:
- 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
SI8232BB-B-ISR FAQ
1.How can I place an order for SI8232BB-B-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8232BB-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 SI8232BB-B-ISR reliable?
The price and inventory of SI8232BB-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 SI8232BB-B-ISR is usually 5 days.
3.What payment methods are accepted for SI8232BB-B-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8232BB-B-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8232BB-B-ISR?
SI8232BB-B-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8232BB-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 SI8232BB-B-ISR?
For technical support, including SI8232BB-B-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8232BB-B-ISR requirements.
6.How does Aetrix verify that SI8232BB-B-ISR is sourced from the original manufacturer or authorized distributors?
All SI8232BB-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 SI8232BB-B-ISR meets industry standards.
7.What is the process for return or replacement of SI8232BB-B-ISR?
All SI8232BB-B-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8232BB-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 SI8232BB-B-ISR part is unused and in its original packaging.
Return procedure for SI8232BB-B-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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