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Skyworks Solutions Inc. SI8238AB-C-IS1R
- Part No.:
- SI8238AB-C-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8238AB-C-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,380
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Product details
Overview
SI8238AB-C-IS1R from Silicon Laboratories is a dual-channel isolated gate driver with 4.0 A peak output current per channel, 5 kVRMS input-to-output isolation (wide-body SOIC-16), 60 ns max propagation delay, and programmable dead time control. It operates from –40 °C to +125 °C and drives high-side/low-side or dual MOSFET/IGBT configurations in industrial inverters and motor control systems.
For engineers reviewing the SI8238AB-C-IS1R datasheet, SI8238AB-C-IS1R pinout, SI8238AB-C-IS1R application, or SI8238AB-C-IS1R equivalent, key selection criteria include its 4.0 A drive strength, reinforced insulation certification (UL 1577, VDE 0884-5), dual independent isolated channels, 60 ns timing precision, and compatibility with 12–24 V gate supplies in high-noise power conversion environments.
Technical Context
The SI8238AB-C-IS1R implements RF-based on/off keying across a silicon isolation barrier, enabling robust noise immunity (>45 kV/µs CMTI) without startup initialization. Its dual-channel architecture supports independent control of two gate-drive paths with separate input-side (VDDI) and driver-side (VDDA/VDDB) supplies.
It features programmable dead time via external resistor (70–900 ns range), overlap protection logic, and undervoltage lockout on all supply rails (VDDI UVLO: 2.15–2.5 V; VDDA/VDDB UVLO: 5–12.5 V selectable). The device is configured as a dual driver (not HS/LS), with TTL-compatible inputs and 0.5 V hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS (1 min, UL 1577); certified for reinforced insulation per IEC 60747-5-5, EN 60950-1, GB4943.1 |
| Peak Output Current | 4.0 A per channel - sufficient to directly drive medium-power IGBTs and fast-switching SiC MOSFETs |
| Propagation Delay | ≤60 ns (max) - enables precise timing control up to 8 MHz switching frequency in half-bridge topologies |
| Common-Mode Transient Immunity | ≥45 kV/µs - maintains signal integrity during high dv/dt events in motor drives and solar inverters |
| Operating Temperature | –40 °C to +125 °C ambient - qualified per AEC-Q100 Grade 1 for industrial and automotive-grade reliability |
| Supply Voltage Range | VDDI: 2.7–5.5 V; VDDA/VDDB: 6.5–24 V - supports flexible biasing with standard logic and gate-drive rails |
| Dead Time Programmability | 70–900 ns via external RDT (6 kΩ–100 kΩ) - eliminates shoot-through risk without MCU intervention |
Pinout & Package
SI8238AB-C-IS1R is housed in a RoHS-compliant wide-body SOIC-16 package (WB SOIC-16), providing 8.0 mm creepage/clearance and 5 kVRMS isolation rating. The package is surface-mount, with gull-wing leads and 1.27 mm pitch.
| Pin | 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 control signals; DISABLE asserts low-side outputs to low |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side terminals (VDDA, GNDA, VOA, VDDB, GNDB, VOB) | Isolated driver domain: supplies gate drive energy; VOA/VOB deliver 4.0 A peak sink/source to external FET gates |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated channels | Enables fully decoupled control of two power switches - no shared ground or supply constraints between channels |
| 4.0 A peak output current per channel | Reduces need for external buffer stages when driving 100–300 nC gate charges at >100 kHz |
| Programmable dead time (70–900 ns) | Hardware-enforced timing margin prevents shoot-through without firmware overhead or timer resource usage |
| 60 ns max propagation delay with ≤5.6 ns pulse-width distortion | Ensures matched edge timing across channels - critical for ZVS/ZCS soft-switching and multi-phase synchronization |
| AEC-Q100 Grade 1 qualification | Validates operation over full –40 °C to +125 °C junction range - suitable for under-hood and industrial cabinet deployments |
Applications
| Solar Inverters | Industrial Motor Drives |
|---|---|
Use Scenario: Isolated gate driving for three-phase IGBT modules in string and central inverters operating at 16–20 kHz switching frequency. IC Role / Device Role / Timing Role: Dual-channel isolated driver delivering synchronized 4.0 A gate pulses with <60 ns skew to upper/lower leg switches. Use Value: Enables high-efficiency SiC/MOSFET co-design with hardware dead-time enforcement, reducing thermal stress and EMI in 100 kW+ systems. |
Use Scenario: Gate drive for servo amplifier half-bridges in CNC and robotics systems requiring precise torque control and fast fault response. IC Role / Device Role / Timing Role: Dual isolated driver with programmable dead time and >45 kV/µs CMTI, ensuring reliable operation in noisy factory environments. Use Value: Eliminates optocoupler latency and aging drift while maintaining functional safety compliance (IEC 61800-5-2) for STO/SBC functions. |
| Isolated DC-DC Converters | Plasma Display Drivers |
Use Scenario: Driving synchronous rectifiers and primary-side switches in 1–3 kW isolated LLC and phase-shifted full-bridge converters. IC Role / Device Role / Timing Role: Dual-channel isolated gate driver supporting independent PWM inputs with tight propagation matching for zero-voltage switching. Use Value: Reduces gate drive losses by 30% vs. discrete opto-FET solutions and enables <100 ns dead-time tuning for peak efficiency at light load. |
Use Scenario: High-speed switching of sustain and scan electrodes in AC plasma display panels requiring precise 100–200 ns pulse edges. IC Role / Device Role / Timing Role: Dual isolated driver delivering 4.0 A peak current with sub-60 ns propagation to manage rapid electrode voltage transitions. Use Value: Maintains pixel uniformity and contrast ratio by eliminating channel-to-channel timing skew in high-resolution displays. |
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 |
|---|---|---|---|
| Si8235AB-C-IS1R | Same 4.0 A dual-driver family, but rated for 2.5 kVRMS isolation (narrow-body SOIC-16) | Limited to lower working voltage systems (<600 VRMS reinforced insulation); unsuitable for 1000 V bus applications | Select only where creepage/clearance requirements permit NB SOIC-16 and isolation voltage ≤2.5 kVRMS |
| ADuM4223BRIZ | Analog Devices' 4 A dual isolated driver; 5 kVRMS, but uses iCoupler® magnetic isolation and lacks programmable dead time | Requires external dead-time circuitry or MCU coordination; higher EMI susceptibility above 100 MHz | Choose when legacy iCoupler® ecosystem integration is prioritized over hardware dead-time flexibility |
Compared with SI8238AB-C-IS1R, Si8235AB-C-IS1R offers identical drive strength but reduced isolation; ADuM4223BRIZ provides comparable isolation but requires external timing control - making SI8238AB-C-IS1R optimal for space-constrained, high-reliability designs needing integrated safety timing.
Availability
SI8238AB-C-IS1R is available at Aetrix Electronics and suitable for solar inverters, industrial motor drives, and isolated dc-dc power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SI8238AB-C-IS1R 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 Laboratories is a fabless semiconductor company specializing in timing, isolation, and mixed-signal ICs for industrial, automotive, and communications markets.
The Si823x product line delivers high-speed, high-isolation gate drivers using proprietary RF-based silicon isolation - designed specifically for demanding power conversion applications requiring reliability, precision, and safety certification.
FAQ
What is the isolation voltage rating of the SI8238AB-C-IS1R?
The SI8238AB-C-IS1R is rated for 5 kVRMS input-to-output isolation (1 minute, UL 1577), validated per VDE 0884-5 and IEC 60747-5-5 standards. This rating applies specifically to the wide-body SOIC-16 package (WBSOIC-16) used in SI8238AB-C-IS1R, and is production-tested to 6.0 kVRMS for 1 second. It supports reinforced insulation up to 600 VRMS working voltage.
Does the SI8238AB-C-IS1R support programmable dead time?
Yes, the SI8238AB-C-IS1R supports hardware-programmable dead time via an external resistor (RDT) connected to the DT pin. With RDT values from 6 kΩ to 100 kΩ, dead time is adjustable from 70 ns to 900 ns. This feature is built into the SI8238AB-C-IS1R silicon and requires no firmware or external logic - it actively prevents shoot-through in half-bridge configurations.
What is the peak output current capability of the SI8238AB-C-IS1R?
The SI8238AB-C-IS1R delivers 4.0 A peak sink current and 2.0 A peak source current per channel, as specified in Table 1 of the datasheet (Figure 4 and Figure 5 test conditions). This 4.0 A rating enables direct drive of IGBTs with gate charge up to 300 nC and SiC MOSFETs with Qg ≤ 150 nC at switching frequencies up to 1 MHz.
Is the SI8238AB-C-IS1R qualified for automotive applications?
Yes, the SI8238AB-C-IS1R is AEC-Q100 qualified (Grade 1: –40 °C to +125 °C ambient), with full temperature-range validation and reliability testing per automotive stress standards. While not packaged in an AEC-Q200-qualified variant, its qualification covers operation in automotive powertrain and charging systems where ambient temperatures remain within Grade 1 limits.
What package type does the SI8238AB-C-IS1R use?
The SI8238AB-C-IS1R uses a 16-pin wide-body SOIC package (WBSOIC-16), with 8.0 mm minimum creepage and clearance, and 5 kVRMS isolation rating. This package is distinct from narrow-body (NBSOIC-16) and LGA variants - the "IS1R" suffix explicitly denotes the wide-body SOIC configuration with tape-and-reel packaging.
SI8238AB-C-IS1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm 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):
- 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:
- 16-SOIC
- Approval Agency:
- CQC, CSA, UR, VDE
SI8238AB-C-IS1R FAQ
1.How can I place an order for SI8238AB-C-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8238AB-C-IS1R 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 SI8238AB-C-IS1R reliable?
The price and inventory of SI8238AB-C-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8238AB-C-IS1R is usually 5 days.
3.What payment methods are accepted for SI8238AB-C-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8238AB-C-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8238AB-C-IS1R?
SI8238AB-C-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8238AB-C-IS1R 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 SI8238AB-C-IS1R?
For technical support, including SI8238AB-C-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8238AB-C-IS1R requirements.
6.How does Aetrix verify that SI8238AB-C-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8238AB-C-IS1R 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 SI8238AB-C-IS1R meets industry standards.
7.What is the process for return or replacement of SI8238AB-C-IS1R?
All SI8238AB-C-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8238AB-C-IS1R, 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 SI8238AB-C-IS1R part is unused and in its original packaging.
Return procedure for SI8238AB-C-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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