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Skyworks Solutions Inc. SI8233CB-AMR
- Part No.:
- SI8233CB-AMR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 14-VDFN
- Datasheet:
-
SI8233CB-AMR.pdf
- Description:
- 2.5 KV 5 V UVLO HS/LS ISOLATED G
- Quantity:
- Payment:
- Shipping:
Inventory:2,336
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Product details
Overview
SI8233CB-AMR from Skyworks Solutions is a high-side/low-side isolated gate driver IC with 4.0 A peak output current, 2.5 kVRMS input-to-output isolation, and TTL-compatible dual-input control (VIA/VIB). It integrates programmable dead time and overlap protection, operates up to 8 MHz switching frequency, and supports 10 V undervoltage lockout - designed for robust half-bridge MOSFET/IGBT drive in industrial inverters and onboard chargers.
For engineers reviewing the SI8233CB-AMR datasheet, SI8233CB-AMR pinout, SI8233CB-AMR application, or SI8233CB-AMR equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, automotive-grade qualification status, and two confirmed alternative parts with documented functional and application differences.
Technical Context
The SI8233CB-AMR implements RF-based silicon isolation with semiconductor barrier technology, enabling 45 ns typical propagation delay and high electromagnetic immunity. Its dual-channel architecture features independent UVLO monitoring per output side (VDDA/VDDB) and internal dead time control via external resistor on DT pin.
This part belongs to the Si823x high-side/low-side driver family with fixed logic behavior: VIA controls VOA (high-side), VIB controls VOB (low-side); both outputs default low during UVLO or DISABLE assertion. It uses non-overlapping output timing enforced by programmable dead time to prevent shoot-through in bridge configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4.0 A source/sink - drives large gate capacitance MOSFETs/IGBTs without external buffers in high-power half-bridges. |
| Isolation Rating | 2.5 kVRMS - certified to UL 1577, CSA 62368-1 (reinforced), VDE 60747-17 (basic) - enables safe operation across mains-referenced power stages. |
| Propagation Delay | 45 ns max - ensures precise timing alignment between high-side and low-side switching edges for tight PWM control. |
| UVLO Threshold | 10 V (rising), 8.5 V (falling) - prevents erratic gate drive during brown-out conditions in 12–24 V supply systems. |
| Switching Frequency | Up to 8 MHz - supports high-frequency resonant topologies (LLC, ZVS) and fast transient response in digital power supplies. |
| Operating Temp | –40 °C to +125 °C - qualified for under-hood automotive and industrial environments with thermal stress. |
| Package | LGA-14 (5 mm × 5 mm) - surface-mount, RoHS-compliant package with enhanced thermal performance vs. SOIC alternatives. |
Pinout & Package
LGA-14 (5 mm × 5 mm) package with exposed thermal pad; RoHS-compliant, JEDEC reflow profile compatible (260 °C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDI | Input-side supply | 4.5–5.5 V logic supply for isolation input die; powers RF transmitter and input comparators. |
| GNDI | Input-side ground | Reference for VIA/VIB/DT/DISABLE inputs; must be separated from power ground for isolation integrity. |
| VIA | High-side input | TTL-compatible logic input controlling VOA; >400 mV hysteresis rejects noise on control lines. |
| VIB | Low-side input | TTL-compatible logic input controlling VOB; independent of VIA for asymmetric PWM or phase-shifted control. |
| DISABLE | Global shutdown | Active-high signal forcing both VOA and VOB low within tSD (≤100 ns); overrides all input states. |
| DT | Dead time programming | Resistor-to-ground sets dead time (DT = 10 × RDT ns); floating or tied to VDDI yields ~400 ps nominal. |
| VDDA | High-side driver supply | 10–24 V supply for high-side output stage; UVLO monitors independently to prevent partial drive failure. |
| GNDA | High-side ground | Return path for VOA; electrically isolated from GNDI and GNDB - enables floating high-side operation. |
| VOA | High-side gate output | 4.0 A capable push-pull driver referenced to GNDA; directly drives N-channel MOSFET gates in bootstrap or isolated supply topologies. |
| VDDB | Low-side driver supply | 10–24 V supply for low-side output stage; independent UVLO ensures safe turn-off even if VDDA fails. |
| GNDB | Low-side ground | Return path for VOB; typically connected to system power ground; galvanically isolated from GNDA/VDDA. |
| VOB | Low-side gate output | 4.0 A capable push-pull driver referenced to GNDB; drives low-side switch with minimal layout-induced shoot-through risk. |
| NC | No connect | Two pins (positions 12 & 14) are unconnected - must remain unpopulated or left floating per design rules. |
| EPAD | Thermal pad | Exposed copper pad on underside - requires solder paste stencil and thermal vias to PCB ground plane for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| Two isolated drivers in one LGA-14 package | Eliminates inter-channel coupling and reduces PCB area vs. discrete optocoupler + gate driver solutions. |
| Programmable dead time with overlap protection | Prevents simultaneous conduction in half-bridge legs using external resistor - no firmware or timing controller needed. |
| RF-based silicon isolation | Delivers 45 ns propagation delay and superior CMTI (>35 kV/µs) vs. optocouplers, enabling stable operation in noisy motor drives. |
| AEC-Q100 Grade 1 qualification | Validated for automotive applications including onboard chargers and traction inverters - zero-defect manufacturing flow applied. |
| Independent UVLO per output channel | Ensures safe shutdown of VOA or VOB individually if VDDA or VDDB drops - critical for fault-tolerant power stage design. |
| TTL-compatible inputs with 400 mV hysteresis | Accepts standard microcontroller GPIO outputs without level-shifting; hysteresis suppresses EMI-induced false triggering. |
Applications
| Industrial Inverters | Solar MPPT Converters |
|---|---|
Use Scenario: Driving high-voltage IGBTs in three-phase 600–1200 V inverters for HVAC and industrial motor control. IC Role / Device Role / Timing Role: High-side/low-side isolated gate driver providing shoot-through-free switching with programmable dead time. Use Value: Enables 10+ kHz PWM operation with <45 ns timing skew, reducing switching losses and improving efficiency over optocoupler-based designs. |
Use Scenario: Controlling MOSFETs in DC-DC boost stages of photovoltaic string inverters operating at 1000 V DC bus. IC Role / Device Role / Timing Role: Isolated gate driver delivering 4.0 A peak current to charge/discharge large gate capacitances rapidly. Use Value: Supports >98% conversion efficiency at 50–100 kHz switching frequencies due to low propagation delay and high drive strength. |
| Onboard EV Chargers | Traction Inverter Gate Drive |
Use Scenario: Driving SiC MOSFETs in bidirectional AC/DC PFC and DC/DC stages of 11–22 kW OBC modules. IC Role / Device Role / Timing Role: Automotive-grade isolated driver with AEC-Q100 qualification and reinforced insulation for 2.5 kVRMS safety. Use Value: Meets ISO 26262 ASIL-B requirements for functional safety when used with external watchdog monitoring. |
Use Scenario: Controlling parallel IGBT modules in 400–800 V traction inverters for BEVs and HEVs. IC Role / Device Role / Timing Role: Dual-channel isolated driver with independent UVLO and thermal robustness for high-current gate drive. Use Value: Reduces gate loop inductance via LGA-14 package and short internal bond wires - critical for minimizing voltage spikes in 1000 A+ systems. |
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 |
|---|---|---|---|
| Si8233BD-D-IS3 | SOIC-14 wide-body package, 5.0 kVRMS isolation, 8 V UVLO threshold | Preferred for industrial systems requiring higher isolation margin and creepage; not automotive-qualified | Select when 5 kVRMS reinforcement is mandated by end-equipment safety standards (e.g., IEC 62368-1 Class II). |
| UCC21540DWPR | Ti's dual-channel isolated driver with 4-A sink/source, 5.7 kVRMS, integrated Miller clamp, and enable pin | Includes active Miller clamp and higher CMTI (150 kV/µs); requires separate enable logic vs. single DISABLE pin | Choose when driving SiC/GaN devices needing Miller clamping to prevent spurious turn-on; adds board complexity but improves reliability. |
Compared with Si8233BD-D-IS3, SI8233CB-AMR offers smaller LGA footprint and automotive qualification but lower isolation rating; versus UCC21540DWPR, it lacks Miller clamping but provides simpler disable control and proven RF-isolation noise immunity in high-dv/dt motor drives.
Availability
SI8233CB-AMR is available at Aetrix Electronics and suitable for industrial inverters, onboard EV chargers, and solar MPPT converters requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.
Supply support for SI8233CB-AMR 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.
The Si823x family was developed to replace optocoupler-based gate drivers in high-reliability power conversion systems, emphasizing fast timing, high CMTI, and automotive-grade robustness for EV and industrial applications.
FAQ
What is the isolation voltage rating of the SI8233CB-AMR?
The SI8233CB-AMR has a certified 2.5 kVRMS input-to-output isolation rating per UL 1577, with additional compliance to CSA 62368-1 (reinforced insulation) and VDE 60747-17 (basic insulation). This rating is validated for one-minute withstand testing and supports safe operation in 1000 V DC bus systems when properly laid out.
Does the SI8233CB-AMR support programmable dead time?
Yes, the SI8233CB-AMR supports programmable dead time via an external resistor (RDT) connected from the DT pin to ground. Dead time is calculated as DT = 10 × RDT (ns), allowing precise adjustment from ~400 ps (floating DT pin) up to several hundred nanoseconds - essential for preventing shoot-through in half-bridge topologies.
Is the SI8233CB-AMR qualified for automotive applications?
Yes, the SI8233CB-AMR is an automotive-grade device qualified to AEC-Q100 Grade 1 (–40 °C to +125 °C), manufactured using full automotive process flows with AIAG-compliant PPAP documentation, IMDS/CAMDS material declarations, and zero-defect methodology throughout production.
What is the peak output current capability of the SI8233CB-AMR?
The SI8233CB-AMR delivers 4.0 A peak source and sink current per channel (VOA and VOB), enabling direct drive of high-gate-charge MOSFETs and IGBTs without external buffer stages - verified across temperature and supply voltage ranges per Skyworks' Electrical Characteristics table.
How does the DISABLE pin function on the SI8233CB-AMR?
The DISABLE pin on the SI8233CB-AMR is an active-high signal that forces both VOA and VOB outputs low within ≤100 ns (tSD), overriding all input states including VIA, VIB, and UVLO conditions. Operation resumes within tRESTART (~1 µs) after DISABLE returns low, ensuring rapid fault recovery in safety-critical systems.
SI8233CB-AMR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si823x
- Package/Case:
- 14-VDFN
- Packaging:
- Tape & Reel (TR)
- 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):
- 45ns, 45ns
- 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:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-QFN (5x5)
- Approval Agency:
- CQC, CSA, UL, VDE
SI8233CB-AMR FAQ
1.How can I place an order for SI8233CB-AMR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8233CB-AMR 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 SI8233CB-AMR reliable?
The price and inventory of SI8233CB-AMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8233CB-AMR is usually 5 days.
3.What payment methods are accepted for SI8233CB-AMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8233CB-AMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8233CB-AMR?
SI8233CB-AMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8233CB-AMR 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 SI8233CB-AMR?
For technical support, including SI8233CB-AMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8233CB-AMR requirements.
6.How does Aetrix verify that SI8233CB-AMR is sourced from the original manufacturer or authorized distributors?
All SI8233CB-AMR 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 SI8233CB-AMR meets industry standards.
7.What is the process for return or replacement of SI8233CB-AMR?
All SI8233CB-AMR units undergo pre-shipment inspection (PSI). If there is an issue with SI8233CB-AMR, 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 SI8233CB-AMR part is unused and in its original packaging.
Return procedure for SI8233CB-AMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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