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Skyworks Solutions Inc. SI8233AB-C-IMR
- Part No.:
- SI8233AB-C-IMR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 14-VFLGA
- Datasheet:
-
SI8233AB-C-IMR.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 14LGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,873
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Product details
Overview
SI8233AB-C-IMR from Silicon Labs is a high-side/low-side isolated gate driver IC with 4.0 A peak output current, 5 kVRMS input-to-output isolation (wide-body SOIC-16), 60 ns max propagation delay, and programmable dead time. It drives IGBTs and MOSFETs in half-bridge topologies for industrial inverters and motor control systems.
For engineers reviewing the SI8233AB-C-IMR datasheet, SI8233AB-C-IMR pinout, SI8233AB-C-IMR application, or SI8233AB-C-IMR equivalent, key selection criteria include its 4.0 A drive strength, dual-channel isolation barrier, overlap protection logic, 125 °C operating temperature, and UL/VDE/CSA safety certifications for reinforced insulation.
Technical Context
The SI8233AB-C-IMR implements RF-based on/off keying across a silicon isolation barrier to achieve robust noise immunity and fast timing-no startup initialization required. Its two independent isolated channels support high-side and low-side gate drive with separate input pins (VIA, VIB) and dedicated UVLO monitoring per supply domain (VDDI, VDDA, VDDB).
It integrates programmable dead time via external resistor (RDT) and hardware overlap protection that forces both outputs low during simultaneous high inputs. The device operates with TTL-compatible inputs (400 mV hysteresis) and supports up to 8 MHz switching frequency with <5.6 ns pulse width distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4.0 A sink/source per channel - directly drives high-Q gate loads of 650 V/30 A IGBTs without external buffers. |
| Isolation Rating | 5 kVRMS (1 min, UL 1577) - certified for reinforced insulation in industrial mains-connected systems up to 600 VRMS working voltage. |
| Propagation Delay | ≤60 ns (max) - enables precise timing control in high-frequency PWM applications like solar inverters and servo drives. |
| Common-Mode Transient Immunity | ≥45 kV/µs - maintains signal integrity in noisy power stage environments with fast dV/dt transients. |
| Operating Temperature | –40 to +125 °C - supports under-hood automotive and industrial ambient conditions without derating. |
| Supply Voltage Range | VDDI: 2.7–5.5 V; VDDA/VDDB: 6.5–24 V - accommodates standard logic supplies and wide-range gate drive rails. |
| Input Hysteresis | 400 mV - rejects noise on control lines in electrically harsh motor drive and power conversion PCB layouts. |
Pinout & Package
SI8233AB-C-IMR is housed in a RoHS-compliant 16-pin wide-body SOIC package (WBSOIC-16) with 8.0 mm creepage/clearance and reinforced insulation barrier between input and output sides.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Input-side terminals (VDDI, GNDI, VIA, VIB, DISABLE) | Isolated input domain: powers logic interface and receives TTL-level HS/LS control signals; DISABLE asserts low-true shutdown. |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side terminals (VDDA, GNDA, VOA, VDDB, GNDB, VOB, DT) | Isolated output domain: dual independent gate drive channels with separate supplies (VDDA/GNDA, VDDB/GNDB), programmable dead time (DT) pin, and floating outputs referenced to respective grounds. |
Key Features
| Feature | Design Value |
|---|---|
| Two independent isolated drivers in one package | Reduces BOM count and PCB area vs. discrete optocoupler + gate driver solutions; eliminates inter-channel coupling risk. |
| Programmable dead time with external resistor | Adjustable 70–900 ns dead time (RDT = 6 kΩ to 100 kΩ) prevents shoot-through in half-bridge configurations without MCU intervention. |
| Overlap protection logic | Hardware-enforced blanking: if VIA and VIB both high, both VOA and VOB forced low - failsafe against control logic errors. |
| AEC-Q100 qualified | Validated for automotive-grade reliability (Grade 1: –40 to +125 °C), enabling use in EV traction inverters and onboard chargers. |
| Transient immunity >45 kV/µs | Withstands fast-switching noise from SiC/GaN power stages without false triggering or latch-up. |
Applications
| Industrial Motor Drives | Solar Inverters |
|---|---|
Use Scenario: Driving IGBT half-bridges in 3-phase variable-frequency drives for HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: High-side/low-side isolated gate driver providing synchronized, shoot-through-protected switching with 4.0 A peak current capability. Use Value: Enables 15 kHz PWM operation with <60 ns timing skew, reducing conduction losses and EMI in compact drive modules. | Use Scenario: Controlling MOSFETs in DC-AC H-bridge stages of string inverters rated up to 10 kW. IC Role / Device Role / Timing Role: Isolated gate driver delivering precise dead time control and 5 kVRMS galvanic separation between controller and power stage. Use Value: Meets IEC 62109 and UL 1741 safety requirements while supporting MPPT efficiency >98.5% through low propagation delay. |
| EV Onboard Chargers | Plasma Display Power Supplies |
Use Scenario: Gate driving SiC MOSFETs in bidirectional AC-DC PFC and DC-DC stages of 11 kW OBCs. IC Role / Device Role / Timing Role: AEC-Q100 qualified isolated driver handling 100+ kHz switching with reinforced insulation for 400 V battery systems. Use Value: Supports 96% system efficiency at full load by minimizing gate drive losses and enabling tight dead time optimization. | Use Scenario: Driving high-voltage MOSFETs in resonant flyback converters powering plasma display panel sustain electrodes. IC Role / Device Role / Timing Role: Dual isolated driver delivering 4.0 A peak current into capacitive loads with <5.6 ns pulse width distortion. Use Value: Ensures accurate phase alignment between sustain pulses, eliminating visible flicker and extending panel lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side/low-side isolated gate drive applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8233AD-C-IMR | Different UVLO thresholds: VDDIUV+ = 4.0 V (min), VDDA/VDDBUV+ = 12.5 V (min) - higher gate drive rail lockout threshold. | Preferred for 12–15 V gate drive rails where tighter undervoltage margin is required to prevent partial turn-on. | Select when system requires higher VDDA/VDDB UVLO trip point to avoid erratic switching during brown-out conditions. |
| UCC21520DW | TI part with 4 A output, 5 kVRMS isolation, but uses capacitive isolation and lacks programmable dead time pin. | Requires external logic or MCU for dead time generation; no hardware overlap protection. | Choose if design already implements dead time in firmware and prioritizes TI's long-term supply assurance over hardware safety features. |
Compared with Si8233AD-C-IMR and UCC21520DW, SI8233AB-C-IMR provides identical 4.0 A drive and 5 kVRMS isolation but offers factory-trimmed 4.0 V VDDI UVLO and integrated overlap protection-reducing system-level fault response time by eliminating software dependency.
Availability
SI8233AB-C-IMR is available at Aetrix Electronics and suitable for industrial motor drives, solar inverters, and EV onboard chargers requiring stable component supply, long lifecycle support, and certified reinforced insulation.
Supply support for SI8233AB-C-IMR 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 product line delivers high-speed, high-current isolated gate drivers using proprietary silicon isolation technology-designed specifically for reliable half-bridge and dual-drive operation in high-noise, high-reliability power conversion systems.
FAQ
What is the isolation rating and safety certification status of the SI8233AB-C-IMR?
The SI8233AB-C-IMR is rated for 5 kVRMS input-to-output isolation (1 minute, UL 1577), with VDE, CSA, and CQC certifications covering IEC 60747-5-5, IEC 60950-1, and GB4943.1. It meets reinforced insulation requirements for industrial and automotive applications up to 600 VRMS working voltage, and is tested to 6.0 kVRMS for production screening.
Does the SI8233AB-C-IMR support programmable dead time, and how is it configured?
Yes, the SI8233AB-C-IMR supports programmable dead time via an external resistor connected to the DT pin. With RDT = 6 kΩ, dead time is ~70 ns; with RDT = 100 kΩ, it reaches ~900 ns. This hardware-based adjustment eliminates MCU overhead and ensures deterministic timing in critical half-bridge applications.
What is the peak output current capability of the SI8233AB-C-IMR, and how does it relate to gate drive performance?
The SI8233AB-C-IMR delivers 4.0 A peak sink and source current per channel. This enables direct drive of high-gate-charge IGBTs (e.g., 300 nC) at 100 kHz with minimal external components, reducing gate loop inductance and improving switching speed consistency versus lower-current alternatives.
How does the overlap protection feature operate in the SI8233AB-C-IMR?
When both VIA and VIB inputs are high, the SI8233AB-C-IMR forces both VOA and VOB outputs low regardless of input state-preventing shoot-through during control signal faults or transient glitches. This hardware-level fail-safe operates independently of dead time settings and requires no external circuitry.
What package type and thermal characteristics apply to the SI8233AB-C-IMR?
The SI8233AB-C-IMR uses a 16-pin wide-body SOIC (WBSOIC-16) package with θJA = 100 °C/W. Its 8.0 mm creepage/clearance and reinforced insulation allow safe operation at 125 °C ambient, with thermal derating curves defined per DIN EN 60747-5-5 for continuous reliability in enclosed power modules.
SI8233AB-C-IMR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 14-VFLGA
- 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):
- 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:
- 14-LGA (5x5)
- Approval Agency:
- CQC, CSA, UR, VDE
SI8233AB-C-IMR FAQ
1.How can I place an order for SI8233AB-C-IMR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8233AB-C-IMR 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 SI8233AB-C-IMR reliable?
The price and inventory of SI8233AB-C-IMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8233AB-C-IMR is usually 5 days.
3.What payment methods are accepted for SI8233AB-C-IMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8233AB-C-IMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8233AB-C-IMR?
SI8233AB-C-IMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8233AB-C-IMR 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 SI8233AB-C-IMR?
For technical support, including SI8233AB-C-IMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8233AB-C-IMR requirements.
6.How does Aetrix verify that SI8233AB-C-IMR is sourced from the original manufacturer or authorized distributors?
All SI8233AB-C-IMR 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 SI8233AB-C-IMR meets industry standards.
7.What is the process for return or replacement of SI8233AB-C-IMR?
All SI8233AB-C-IMR units undergo pre-shipment inspection (PSI). If there is an issue with SI8233AB-C-IMR, 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 SI8233AB-C-IMR part is unused and in its original packaging.
Return procedure for SI8233AB-C-IMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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