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Home > Products > Isolators > Isolators - Gate Drivers

Skyworks Solutions Inc. SI8238AD-C-ISR

Name: SI8238AD-C-ISR
Brand: Skyworks Solutions Inc.
SKU: SI8238AD-C-ISR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SI8238AD-C-ISR

Manufacturer:: Skyworks Solutions Inc.

Category:: Isolators - Gate Drivers

Package:: 16-SOIC (0.295", 7.50mm Width)

Datasheet:: SI8238AD-C-ISR.pdf

Description:: DGTL ISO 5KV 2CH GATE DVR 16SOIC

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Product details

Overview

SI8238AD-C-ISR from Silicon Labs is a dual-channel isolated gate driver with 4.0 A peak output current per channel, 5 kVRMS input-to-output isolation (SOIC-16 wide-body package), 60 ns max propagation delay, and programmable dead time control. It serves as a high-reliability replacement for optocoupler-based gate drives in industrial inverters and motor control systems requiring reinforced insulation and >45 kV/µs CMTI.

For engineers reviewing the SI8238AD-C-ISR datasheet, SI8238AD-C-ISR pinout, SI8238AD-C-ISR application, or SI8238AD-C-ISR equivalent, key selection criteria include its dual-driver topology (non-HS/LS), 4.0 A sink/source capability, SOIC-16WB package with 8.0 mm creepage/clearance, AEC-Q100 qualification, and compatibility with 12–24 V driver supplies in high-noise power conversion stages.

Technical Context

The SI8238AD-C-ISR implements RF-based digital isolation with on/off keying modulation across a silicon dielectric barrier, enabling robust noise immunity without startup initialization. Its dual independent channels operate with separate input-side (VDDI) and driver-side (VDDA/VDDB) supplies, supporting grounded or floating output configurations.

It features programmable dead time via external resistor (70–900 ns range), overlap protection logic, undervoltage lockout on all three supply rails (VDDI UV+ = 4.0 V typ, VDDA/VDDB UV+ = 12.5 V option), and thermal derating compliant with IEC 60747-5-5 up to 150 °C junction temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
Isolation Rating	5 kVRMS (1 min, UL 1577); validated for reinforced insulation per IEC 60950-1/60601-1/VDE 0884-5
Peak Output Current	4.0 A sink/source per channel - drives high-Qg MOSFETs/IGBTs directly without external buffers
Propagation Delay	≤60 ns (max) - enables >8 MHz switching frequency with tight timing control
Common-Mode Transient Immunity	>45 kV/µs - maintains signal integrity in fast-switching SiC/GaN half-bridges
Operating Temperature	–40 °C to +125 °C ambient - qualified for industrial and automotive under-hood environments
Supply Voltage Range	VDDI: 2.7–5.5 V; VDDA/VDDB: 6.5–24 V - supports 12 V and 15 V gate drive rails
Dead Time Programmability	70–900 ns via single R_DT resistor - eliminates external timing circuitry in synchronous rectifiers

Pinout & Package

SI8238AD-C-ISR is housed in a RoHS-compliant SOIC-16 wide-body package (WBSOIC-16) with 8.0 mm minimum creepage and clearance, rated for 5 kVRMS isolation. Pin 1 is marked with a dot; pins 1–8 form the input-side domain, pins 9–16 the isolated output-side domain.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 5, 6, 7, 8	Input-side domain (VDDI, GNDI, VIA, VIB, DISABLE)	Logic-level inputs and bias supply referenced to isolated input ground - tolerant of TTL/CMOS levels with 400 mV hysteresis
9, 10, 11, 12, 13, 14, 15, 16	Output-side domain (VDDA, GNDA, VOA, VDDB, GNDB, VOB)	Two independent high-current gate drive outputs with separate supplies - each channel supports floating or common-grounded load connections

Key Features

Feature	Design Value
Dual independent isolated drivers	Enables fully decoupled control of two discrete power switches (e.g., half-bridge legs or dual-phase converters) without shared timing constraints
4.0 A peak output current	Drives 100 nC+ gate charge devices at 100 kHz+ without external boost stages - reduces BOM count and layout area
Programmable dead time (70–900 ns)	Prevents shoot-through in synchronous topologies using only one external resistor - no microcontroller or timing IC required
AEC-Q100 qualified	Validated for automotive powertrain and charging applications including on-board chargers and traction inverters
60 ns max propagation delay mismatch	Ensures <1 ns inter-channel skew - critical for precise phase alignment in interleaved multi-phase converters

Applications

Motor Control Systems	Solar Inverters
Use Scenario: Driving high-side and low-side IGBTs in 3-phase inverter stages for HVAC compressors and industrial servo drives. IC Role / Device Role / Timing Role: Dual isolated gate driver providing independent, noise-immune control signals to upper/lower switches with programmable dead time to prevent cross-conduction. Use Value: Enables 16 kHz PWM operation with <60 ns timing uncertainty and >45 kV/µs CMTI - eliminating false triggering in EMI-heavy motor enclosures.	Use Scenario: Gate driving MOSFETs in DC-DC stage and full-bridge inverter of string inverters with galvanic isolation between PV array and grid interface. IC Role / Device Role / Timing Role: Isolated dual driver delivering 4.0 A peak current to fast-switching SiC FETs while maintaining 5 kVRMS working voltage per IEC 62109. Use Value: Supports 100 kHz+ switching with minimal propagation delay skew - improving efficiency in MPPT and grid-synchronization circuits.
Industrial UPS Systems	Plasma Display Drivers
Use Scenario: Controlling bidirectional buck-boost stages and inverter legs in online double-conversion UPS units operating continuously at 40–60 °C ambient. IC Role / Device Role / Timing Role: Dual-channel isolated driver powering both AC/DC and DC/AC power stages with independent UVLO monitoring on all supply rails. Use Value: Maintains reliable gate drive under brownout conditions via triple-rail UVLO (VDDI/VDDA/VDDB) - preventing partial turn-on failures during line transients.	Use Scenario: Driving sustain and scan electrodes in AC plasma display panels requiring precise timing and high-voltage isolation between logic and panel sections. IC Role / Device Role / Timing Role: Dual isolated driver generating synchronized high-voltage pulses with <5.6 ns pulse width distortion for pixel row/column addressing. Use Value: Delivers sub-10 ns timing accuracy across temperature (–40 to +125 °C) - ensuring consistent luminance and eliminating vertical banding artifacts.

Motor Control Systems

Solar Inverters

Use Scenario: Driving high-side and low-side IGBTs in 3-phase inverter stages for HVAC compressors and industrial servo drives.

IC Role / Device Role / Timing Role: Dual isolated gate driver providing independent, noise-immune control signals to upper/lower switches with programmable dead time to prevent cross-conduction.

Use Value: Enables 16 kHz PWM operation with <60 ns timing uncertainty and >45 kV/µs CMTI - eliminating false triggering in EMI-heavy motor enclosures.

Use Scenario: Gate driving MOSFETs in DC-DC stage and full-bridge inverter of string inverters with galvanic isolation between PV array and grid interface.

IC Role / Device Role / Timing Role: Isolated dual driver delivering 4.0 A peak current to fast-switching SiC FETs while maintaining 5 kVRMS working voltage per IEC 62109.

Use Value: Supports 100 kHz+ switching with minimal propagation delay skew - improving efficiency in MPPT and grid-synchronization circuits.

Industrial UPS Systems

Plasma Display Drivers

Use Scenario: Controlling bidirectional buck-boost stages and inverter legs in online double-conversion UPS units operating continuously at 40–60 °C ambient.

IC Role / Device Role / Timing Role: Dual-channel isolated driver powering both AC/DC and DC/AC power stages with independent UVLO monitoring on all supply rails.

Use Value: Maintains reliable gate drive under brownout conditions via triple-rail UVLO (VDDI/VDDA/VDDB) - preventing partial turn-on failures during line transients.

Use Scenario: Driving sustain and scan electrodes in AC plasma display panels requiring precise timing and high-voltage isolation between logic and panel sections.

IC Role / Device Role / Timing Role: Dual isolated driver generating synchronized high-voltage pulses with <5.6 ns pulse width distortion for pixel row/column addressing.

Use Value: Delivers sub-10 ns timing accuracy across temperature (–40 to +125 °C) - ensuring consistent luminance and eliminating vertical banding artifacts.

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
Si8235AD-C-ISR	Same SOIC-16WB package, 4.0 A output, but lacks programmable dead time and overlap protection	Suitable for non-synchronous or externally timed topologies where shoot-through risk is managed elsewhere	Select when dead time is fixed by controller or system-level timing; lower cost where feature set permits
UCC5390SCDR	Texas Instruments dual isolated driver; 4.5 A peak, 40 ns propagation, but only 3.75 kVRMS isolation and no AEC-Q100 rating	Better suited for cost-sensitive industrial SMPS where 5 kVRMS and automotive qualification are not required	Choose for higher-speed designs needing <45 ns delay, accepting reduced isolation and qualification scope

Compared with SI8238AD-C-ISR, Si8235AD-C-ISR omits dead time programming-requiring external timing control-while UCC5390SCDR trades isolation robustness and automotive qualification for faster propagation, making SI8238AD-C-ISR optimal for safety-critical, high-noise, and regulated environments.

Availability

SI8238AD-C-ISR is available at Aetrix Electronics and suitable for solar inverters, industrial motor drives, and automotive on-board chargers requiring stable component supply, long-term lifecycle support, and traceable sourcing for ISO 9001-certified production.

Supply support for SI8238AD-C-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 precision timing, isolation, and mixed-signal ICs for industrial, automotive, and communications infrastructure.

The Si823x family was designed to replace optocouplers in high-reliability gate drive applications, delivering superior CMTI, tighter timing, and extended temperature operation using proprietary RF-based silicon isolation technology.

FAQ

What is the isolation voltage rating of the SI8238AD-C-ISR?

The SI8238AD-C-ISR is rated for 5 kVRMS input-to-output isolation per UL 1577 (1 minute test), validated for reinforced insulation per IEC 60950-1, IEC 60601-1, and VDE 0884-5. This rating applies specifically to the SOIC-16 wide-body package variant (WBSOIC-16) used in SI8238AD-C-ISR, with 8.0 mm creepage and clearance distances.

Does the SI8238AD-C-ISR support programmable dead time?

Yes, the SI8238AD-C-ISR supports programmable dead time from 70 ns to 900 ns via a single external resistor (R_DT) connected to the DT pin. This feature is integrated into the device's overlap protection logic and is active in both channels simultaneously - a distinguishing capability not present in lower-tier Si823x variants like SI8235AD-C-ISR.

What is the peak output current capability of the SI8238AD-C-ISR?

The SI8238AD-C-ISR delivers 4.0 A peak sink current and 2.0 A peak source current per channel, as specified in Table 1 of the datasheet under "Output Short-Circuit Pulsed Sink/Source Current." This enables direct driving of high-gate-charge power devices such as 1200 V SiC MOSFETs with Q_g up to 80 nC at 100 kHz switching frequencies.

Is the SI8238AD-C-ISR qualified for automotive applications?

Yes, the SI8238AD-C-ISR is AEC-Q100 qualified (Grade 1, –40 °C to +125 °C ambient), with full thermal derating validation per DIN EN 60747-5-5. Its safety certifications (UL, VDE, CSA, CQC) and 5 kVRMS isolation make it suitable for automotive on-board chargers, DC-DC converters, and traction inverter auxiliary drives.

What package type does the SI8238AD-C-ISR use?

The SI8238AD-C-ISR uses a SOIC-16 wide-body (WBSOIC-16) RoHS-compliant package with 1.27 mm pitch, 10.3 mm body width, and 8.0 mm minimum creepage/clearance. This package is explicitly designated for 5 kVRMS-rated variants in the Si823x family and is distinct from narrow-body or LGA variants used in lower-isolation versions.

SI8238AD-C-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:: 5000Vrms

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

SI8238AD-C-ISR FAQ

1.How can I place an order for SI8238AD-C-ISR through Aetrix?

Please submit a Request for Quotation (RFQ) for SI8238AD-C-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 SI8238AD-C-ISR reliable?

The price and inventory of SI8238AD-C-ISR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8238AD-C-ISR is usually 5 days.

3.What payment methods are accepted for SI8238AD-C-ISR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8238AD-C-ISR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI8238AD-C-ISR?

SI8238AD-C-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI8238AD-C-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 SI8238AD-C-ISR?

For technical support, including SI8238AD-C-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8238AD-C-ISR requirements.

6.How does Aetrix verify that SI8238AD-C-ISR is sourced from the original manufacturer or authorized distributors?

All SI8238AD-C-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 SI8238AD-C-ISR meets industry standards.

7.What is the process for return or replacement of SI8238AD-C-ISR?

All SI8238AD-C-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8238AD-C-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 SI8238AD-C-ISR part is unused and in its original packaging.

Return procedure for SI8238AD-C-ISR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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