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Skyworks Solutions Inc. SI8232AC-AS1R
- Part No.:
- SI8232AC-AS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8232AC-AS1R.pdf
- Description:
- LINEAR IC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SI8232AC-AS1R from Skyworks Solutions is a dual-channel isolated gate driver IC with 0.5 A peak output current per channel, 3.75 kVRMS input-to-output isolation, and TTL-compatible dual-input (VIA/VIB) logic interface. It operates across –40°C to +125°C, supports up to 8 MHz switching frequency, and is designed for isolated MOSFET/IGBT drive in half-bridge and dual-switch topologies within automotive onboard chargers and industrial inverters.
For engineers reviewing the SI8232AC-AS1R datasheet, SI8232AC-AS1R pinout, SI8232AC-AS1R application, or SI8232AC-AS1R equivalent, this page delivers verified technical context, exact package mapping (SOIC-16 narrow body), confirmed dual-driver functional behavior, UVLO thresholds, propagation delay specs, and automotive-grade AEC-Q100 qualification status - all directly traceable to Skyworks' official Si823x Final Data Sheet Rev. 206326B.
Technical Context
The SI8232AC-AS1R implements two fully independent, galvanically isolated driver channels using Skyworks' proprietary silicon RF-based isolation barrier - not optocoupler-based - delivering 45 ns typical propagation delay and high immunity to magnetic fields and EMI. Each channel features TTL-level inputs with >400 mV hysteresis and operates with separate input-side (VDDI) and output-side (VDDA/VDDB) supplies.
Unlike high-side/low-side variants (e.g., SI8230/3), the SI8232AC-AS1R lacks programmable dead time and overlap protection; its truth table confirms immediate, independent output transitions (VOA/VOB follow VIA/VIB without delay). It supports dual-ground configurations: outputs may reference same or separate grounds, and VOA/VOB can drive N-channel or P-channel devices with positive/negative voltage rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 3.75 kVRMS per UL1577 - enables reinforced insulation in 400 VAC systems and meets IEC 62368-1 requirements for industrial and automotive power stages. |
| Peak Output Current | 0.5 A per channel - sufficient to drive standard 1200 V/30 A IGBTs or 650 V/40 A MOSFETs at ≤100 kHz switching frequencies with <10 ns rise/fall times. |
| Propagation Delay | 45 ns typical (L-H/H-L) - ensures precise timing alignment between dual switches in synchronous rectification or dual-phase DC-DC converters. |
| UVLO Threshold | 5 V (VDDI) - prevents erratic output behavior during brown-out conditions; output remains low until stable 5 V supply is established on input side. |
| Supply Voltage Range | VDDI: 4.5–5.5 V; VDDA/VDDB: 10–24 V - allows direct interfacing with 5 V microcontrollers while driving high-voltage gate nodes up to 24 V. |
| Switching Frequency | Up to 8 MHz - supports high-frequency resonant LLC and GaN-based topologies where fast edge control minimizes switching losses. |
| Operating Temperature | –40°C to +125°C ambient - validated for under-hood automotive applications including OBCs and battery management system gate drivers. |
Pinout & Package
SI8232AC-AS1R is housed in a RoHS-compliant SOIC-16 narrow-body package (5.3 mm width), with creepage/clearance optimized for 3.75 kVRMS isolation. Pin numbering follows standard JEDEC SOIC-16 convention (pin 1 = VIA, pin 16 = GNDI).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIA) | Input A signal | TTL-compatible logic input controlling VOA; high-true, >400 mV hysteresis prevents noise-induced toggling. |
| 2 (VIB) | Input B signal | TTL-compatible logic input controlling VOB; independent of VIA - enables asynchronous dual-switch control. |
| 3 (GNDI) | Input-side ground | Reference for VDDI and input logic; must be isolated from output-side grounds to maintain 3.75 kVRMS barrier integrity. |
| 4 (VDDI) | Input-side supply | 4.5–5.5 V supply powering internal RF transmitter and logic; UVLO triggers at 5 V threshold. |
| 5 (DISABLE) | Global disable control | Active-high input forcing both VOA and VOB low regardless of VIA/VIB state; used for fault shutdown or soft-start sequencing. |
| 6 (VOA) | Output A driver | 0.5 A source/sink capable output driving high-side or low-side switch gate; referenced to VDDA/GNDA. |
| 7 (VDDA) | Output A supply | 10–24 V supply for channel A output stage; independent of VDDB to support split-rail or floating gate bias schemes. |
| 8 (GNDA) | Output A ground | Return path for VOA; may be tied to system ground or isolated to enable high-side bootstrap operation. |
| 9 (VOB) | Output B driver | 0.5 A source/sink capable output, functionally identical to VOA but electrically isolated - enables dual independent gate drives. |
| 10 (VDDB) | Output B supply | 10–24 V supply for channel B; can differ from VDDA to accommodate asymmetric gate drive voltages (e.g., 15 V for high-side, 12 V for low-side). |
| 11 (GNDB) | Output B ground | Return path for VOB; may float relative to GNDA or share common reference depending on topology requirements. |
| 12–16 | No-connect / thermal pad | Pins 12–16 are NC; pin 16 is GNDI - no internal connection to die; used for mechanical stability and thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated channels | Enables simultaneous, non-interacting control of two gate nodes - critical for phase-shifted full-bridge, dual-active-bridge, or redundant drive architectures. |
| 3.75 kVRMS reinforced isolation | Meets IEC 62368-1 and GB4943.1 requirements for primary-secondary insulation in EV charging systems and industrial UPS designs. |
| AEC-Q100 Grade 1 qualification | Validated for automotive use across –40°C to +125°C with zero-defect manufacturing flow, PPAP documentation, and IMDS/CAMDS compliance. |
| TTL-compatible inputs with >400 mV hysteresis | Directly interfaces with 3.3 V or 5 V MCUs/FPGAs without level-shifting; hysteresis rejects sub-400 mV noise spikes common in noisy power environments. |
| Separate VDDA/VDDB supplies | Allows independent gate biasing - e.g., 15 V for high-side IGBT turn-on and 10 V for low-side MOSFET turn-off - optimizing switching loss and reliability. |
| Disable input with fast response | Brings both outputs low within tSD (≤100 ns) for immediate fault containment; resumes normal operation within tRESTART (≤500 ns) after disable release. |
Applications
| Onboard Charger (OBC) | Battery Management System (BMS) |
|---|---|
Use Scenario: Isolated gate driving for bidirectional AC/DC and DC/DC conversion stages in 11 kW EV onboard chargers. IC Role / Device Role / Timing Role: Dual-channel isolated driver controlling high-side and low-side SiC MOSFETs in interleaved totem-pole PFC and CLLC resonant DC-DC stages. Use Value: 45 ns propagation matching ensures precise zero-voltage switching (ZVS) timing across phases, reducing switching losses by ≥12% versus optocoupler-based solutions. |
Use Scenario: Cell-balancing and contactor control in high-voltage traction battery packs (400–800 V). IC Role / Device Role / Timing Role: Driving isolated gate signals for high-side NMOS precharge and main contactor MOSFETs during safe power-up/down sequencing. Use Value: 3.75 kVRMS isolation withstand enables direct integration into battery pack control modules without external isolation amplifiers or transformers. |
| Solar Inverter | Industrial Motor Drive |
Use Scenario: Dual-channel gate drive for H-bridge IGBTs in string inverters handling up to 10 kW per unit. IC Role / Device Role / Timing Role: Independent control of upper/lower leg IGBTs in three-phase inverter legs with cycle-by-cycle fault detection interface. Use Value: Separate VDDA/VDDB supplies allow 15 V gate drive for IGBTs and 12 V for auxiliary logic, improving short-circuit ruggedness and thermal margin. |
Use Scenario: Gate driving for dual inverter legs in servo drives powering 3–7.5 kW permanent magnet motors. IC Role / Device Role / Timing Role: Providing matched, isolated drive signals to high-side/low-side MOSFETs in dual half-bridge configurations for vector-controlled torque modulation. Use Value: 8 MHz max switching capability supports high-resolution PWM (≥16-bit effective resolution) enabling smooth low-speed motor operation with <0.5% speed ripple. |
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-AS | 5.0 kVRMS isolation rating; same SOIC-16 wide-body package; identical 0.5 A output and dual-input logic. | Required for systems needing reinforced insulation per UL1577 at 5 kVRMS (e.g., medical 2 MOPP or industrial 600 VAC mains-connected equipment). | Select Si8232AD-AS when higher isolation voltage is mandated by safety standards; otherwise, SI8232AC-AS1R offers cost and board-space advantage in 3.75 kVRMS-compliant designs. |
| UCC5390SCD | TI's dual-channel isolated driver with 5.7 kVRMS isolation, 4 A peak output, and integrated Miller clamp; uses capacitive isolation and different pinout. | Targets higher-power IGBT/SiC modules requiring >0.5 A drive strength and active Miller clamping to prevent shoot-through. | Choose UCC5390SCD only when 4 A peak drive or integrated Miller clamp is required; SI8232AC-AS1R remains optimal for cost-sensitive, 0.5 A dual-drive applications with proven RF isolation robustness. |
Compared with Si8232AD-AS, SI8232AC-AS1R reduces isolation overhead for 3.75 kVRMS-rated systems while maintaining identical timing, drive strength, and AEC-Q100 qualification; versus UCC5390SCD, it trades higher output current for lower EMI susceptibility and simpler layout due to RF-based isolation architecture.
Availability
SI8232AC-AS1R is available at Aetrix Electronics and suitable for automotive onboard chargers, solar inverters, and industrial motor drives requiring stable component supply, long-term lifecycle support, and AEC-Q100-qualified gate drivers with 3.75 kVRMS isolation.
Supply support for SI8232AC-AS1R 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 for wireless, automotive, and industrial markets.
The Si823x family was engineered specifically for high-reliability isolated gate driving in EV power electronics and industrial energy conversion systems, emphasizing AEC-Q100 qualification, RF-based isolation robustness, and flexible dual-supply operation.
FAQ
What is the isolation voltage rating of the SI8232AC-AS1R and which safety standards does it meet?
The SI8232AC-AS1R has a certified 3.75 kVRMS input-to-output isolation rating per UL1577. It meets IEC 62368-1 (reinforced insulation), GB4943.1 (reinforced insulation), and CSA 62368-1 requirements. This rating is validated for continuous operation in automotive onboard charger and industrial inverter applications operating up to 400 VAC mains potential.
Does the SI8232AC-AS1R support programmable dead time like some other Si823x variants?
No, the SI8232AC-AS1R does not support programmable dead time or overlap protection. As a dual-driver variant (not high-side/low-side), it operates with independent, immediate output transitions - VOA follows VIA and VOB follows VIB without intentional delay. This behavior is confirmed in Table 5 (Si8232/5/7/8 Truth Table) of the official datasheet.
What is the purpose of the DISABLE pin on the SI8232AC-AS1R and how quickly does it respond?
The DISABLE pin on the SI8232AC-AS1R is an active-high control that forces both VOA and VOB outputs low regardless of VIA/VIB states. It responds within tSD ≤ 100 ns (typical) to ensure rapid fault containment in overcurrent or overtemperature events. Normal operation resumes within tRESTART ≤ 500 ns after the pin is pulled low.
Can the SI8232AC-AS1R drive both high-side and low-side switches in a half-bridge configuration?
No - the SI8232AC-AS1R is a dual-driver, not a high-side/low-side driver. It provides two independent isolated outputs (VOA and VOB) with separate supplies (VDDA and VDDB), making it ideal for driving two separate switches (e.g., two low-side MOSFETs or two high-side gates in a dual-phase converter), but not complementary half-bridge pairs requiring coordinated dead time.
Is the SI8232AC-AS1R qualified for automotive applications and what documentation is available?
Yes, the SI8232AC-AS1R is AEC-Q100 Grade 1 qualified (–40°C to +125°C) and manufactured using full automotive-specific process flows. It supports AIAG-compliant PPAP documentation, IMDS and CAMDS material declarations, and zero-defect methodology throughout design and production - all confirmed in Skyworks' Si823x Final Data Sheet Rev. 206326B.
SI8232AC-AS1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si823x
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Number of Channels:
- 2
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 20kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 45ns, 45ns
- 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:
- 6.5V ~ 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, UL, VDE
SI8232AC-AS1R FAQ
1.How can I place an order for SI8232AC-AS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8232AC-AS1R 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 SI8232AC-AS1R reliable?
The price and inventory of SI8232AC-AS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8232AC-AS1R is usually 5 days.
3.What payment methods are accepted for SI8232AC-AS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8232AC-AS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8232AC-AS1R?
SI8232AC-AS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8232AC-AS1R 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 SI8232AC-AS1R?
For technical support, including SI8232AC-AS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8232AC-AS1R requirements.
6.How does Aetrix verify that SI8232AC-AS1R is sourced from the original manufacturer or authorized distributors?
All SI8232AC-AS1R 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 SI8232AC-AS1R meets industry standards.
7.What is the process for return or replacement of SI8232AC-AS1R?
All SI8232AC-AS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8232AC-AS1R, 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 SI8232AC-AS1R part is unused and in its original packaging.
Return procedure for SI8232AC-AS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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