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Home > Products > Isolators > Isolators - Gate Drivers

Vishay Semiconductor Opto Division VOFD341A-X008T

Name: VOFD341A-X008T
Brand: Vishay Semiconductor Opto Division
SKU: VOFD341A-X008T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VOFD341A-X008T

Manufacturer:: Vishay Semiconductor Opto Division

Category:: Isolators - Gate Drivers

Package:: 6-SOIC (0.268", 6.80mm Width)

Datasheet:: VOFD341A-X008T.pdf

Description:: SMD-6 IGBT MOSFET DRIVER 3A

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Product details

Overview

VOFD341A-X008T from Vishay Semiconductors is a high-speed, high-current optocoupled IGBT/MOSFET gate driver with 3.0 A peak output current, rail-to-rail output stage, and 35 kV/μs common mode transient immunity. It operates across 15 V to 30 V supply range and supports ambient temperatures from –40 °C to +125 °C, enabling direct drive of up to 1200 V / 100 A IGBTs in industrial motor inverters.

For engineers reviewing the VOFD341A-X008T datasheet, VOFD341A-X008T pinout, VOFD341A-X008T application, or VOFD341A-X008T equivalent, key selection criteria include propagation delay ≤200 ns, UVLO thresholds (11.0–13.5 V turn-on, 9.5–12.0 V turn-off), and stretched SO-6 (option 8) package with 8 mm creepage/clearance for reinforced isolation in UPS and induction stove designs.

Technical Context

The VOFD341A-X008T integrates an AlGaAs LED optically coupled to a monolithic IC power output stage featuring complementary high-side/low-side drivers with rail-to-rail swing. Its internal UVLO circuit ensures safe gate drive only when supply voltage exceeds 11.0 V (turn-on) and remains above 9.5 V (hysteresis = 1.5 V), preventing partial turn-on of power devices.

It delivers asymmetric output capability: –2.5 A high-side sink at VO = VCC – 4 V and +2.5 A low-side source at VO = VEE + 4 V, with matched propagation delays (tPLH/tPHL ≤200 ns, PDD ≤±100 ns) and fast edge rates (tr/tf ≤35 ns), optimized for high-frequency (≤75 kHz) switching in isolated half-bridge configurations.

Key Specifications

Parameter	Value and Actual Design Meaning
Peak Output Current	3.0 A - drives IGBT gates requiring high instantaneous charge injection during turn-on/turn-off
Propagation Delay	≤200 ns - enables precise timing control in 75 kHz PWM systems with minimal dead-time uncertainty
Common Mode Immunity	35 kV/μs - maintains signal integrity in noisy inverter environments with rapid bus transients
Supply Voltage Range	15 V to 30 V - accommodates wide-range auxiliary supplies while supporting 1200 V IGBT gate drive margins
UVLO Threshold	11.0–13.5 V (turn-on), 9.5–12.0 V (turn-off) - prevents unreliable gate drive during brown-out or startup
Operating Temperature	–40 °C to +125 °C - rated for under-hood or enclosed industrial enclosure operation without derating
Isolation Rating	8000 V_PEAK (DIN EN 60747-5-5) - meets reinforced insulation requirements for mains-connected inverters

Pinout & Package

VOFD341A-X008T uses the stretched SO-6 (option 8) surface-mount package with 8 mm creepage and clearance distances, 0.4 mm minimum insulation thickness, and UL/cUL/VDE certification. The shielded construction enhances noise immunity in high-dV/dt applications.

Pin/Terminal	Circuit Role	Design Meaning
1 (Anode)	LED Input Anode	Accepts 8–16 mA forward current to activate optical coupling; threshold IF_LH = 2.5–5 mA
2 (Cathode)	LED Input Cathode	Completes LED bias path; reverse voltage rating = 5 V
3 (VEE)	Negative Output Supply	Serves as low-side reference; supports negative gate drive down to VEE + 0.25 V low-level output
4 (VO)	Power Output Terminal	Delivers rail-to-rail gate drive (VCC to VEE); handles ±3.0 A peak current into capacitive loads
5 (VCC)	Positive Output Supply	Provides high-side drive rail; UVLO monitoring applied here
6 (Shield)	Internal Shield Terminal	Must be connected to VEE to suppress capacitive coupling and maximize CMR performance

Key Features

Feature	Design Value
Rail-to-rail output stage	Enables full VCC-to-VEE gate voltage swing for optimal IGBT saturation and low conduction loss
35 kV/μs common mode rejection	Maintains logic-level output fidelity despite >1500 V transient dV/dt on power rails
Integrated UVLO with 1.5 V hysteresis	Guarantees clean power-up/power-down sequencing and prevents shoot-through during supply faults
Stretched SO-6 option 8 packaging	Provides 8 mm creepage/clearance and 8000 V_PEAK isolation for Class II safety compliance in AC mains systems
Matched propagation delays	≤±100 ns skew between rising/falling edges ensures symmetrical PWM timing in dual-gate drive topologies

Applications

AC Motor Drives	Induction Cooking Systems
Use Scenario: Controlling three-phase IGBT bridges in variable-frequency drives for HVAC compressors and pumps. IC Role / Device Role / Timing Role: Isolated gate driver providing level-shifted, high-current turn-on/turn-off pulses with <200 ns timing precision. Use Value: Enables efficient 0–400 Hz motor control with minimized switching losses and EMI due to fast, matched edge rates and 35 kV/μs CMR.	Use Scenario: Driving resonant half-bridge IGBTs in 20–50 kHz induction heating inverters for cooktops. IC Role / Device Role / Timing Role: High-speed isolated driver delivering 3.0 A peak gate current to sustain ZVS/ZCS transitions. Use Value: Supports reliable zero-voltage switching at elevated temperatures (up to +125 °C ambient) with UVLO protection against auxiliary supply droop.
Industrial Solar Inverters	Uninterruptible Power Supplies
Use Scenario: Gate driving IGBT modules in DC/AC conversion stages of string and central solar inverters. IC Role / Device Role / Timing Role: Reinforced-isolation driver interfacing microcontroller PWM outputs to high-voltage power stage. Use Value: Meets IEC 62109 and UL 1741 requirements via 8000 V_PEAK isolation and 8 mm creepage in stretched SO-6 (option 8).	Use Scenario: Controlling bidirectional IGBTs in online double-conversion UPS systems with battery backup. IC Role / Device Role / Timing Role: Fault-tolerant gate driver with fast propagation and robust CMR for seamless transfer between utility and inverter modes. Use Value: Ensures uninterrupted load power by maintaining gate drive integrity during 1500 V bus transients and thermal stress up to +125 °C.

AC Motor Drives

Induction Cooking Systems

Use Scenario: Controlling three-phase IGBT bridges in variable-frequency drives for HVAC compressors and pumps.

IC Role / Device Role / Timing Role: Isolated gate driver providing level-shifted, high-current turn-on/turn-off pulses with <200 ns timing precision.

Use Value: Enables efficient 0–400 Hz motor control with minimized switching losses and EMI due to fast, matched edge rates and 35 kV/μs CMR.

Use Scenario: Driving resonant half-bridge IGBTs in 20–50 kHz induction heating inverters for cooktops.

IC Role / Device Role / Timing Role: High-speed isolated driver delivering 3.0 A peak gate current to sustain ZVS/ZCS transitions.

Use Value: Supports reliable zero-voltage switching at elevated temperatures (up to +125 °C ambient) with UVLO protection against auxiliary supply droop.

Industrial Solar Inverters

Uninterruptible Power Supplies

Use Scenario: Gate driving IGBT modules in DC/AC conversion stages of string and central solar inverters.

IC Role / Device Role / Timing Role: Reinforced-isolation driver interfacing microcontroller PWM outputs to high-voltage power stage.

Use Value: Meets IEC 62109 and UL 1741 requirements via 8000 V_PEAK isolation and 8 mm creepage in stretched SO-6 (option 8).

Use Scenario: Controlling bidirectional IGBTs in online double-conversion UPS systems with battery backup.

IC Role / Device Role / Timing Role: Fault-tolerant gate driver with fast propagation and robust CMR for seamless transfer between utility and inverter modes.

Use Value: Ensures uninterrupted load power by maintaining gate drive integrity during 1500 V bus transients and thermal stress up to +125 °C.

Equivalent & Alternatives

The following parts are listed as comparable options for similar optocoupled gate driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ACPL-332J-000E	2.5 A peak output, 50 kV/μs CMR, SO-6 package with 5000 V_RMS isolation	Lacks VDE certification; lower peak current limits use in <600 V IGBTs	Preferred where higher CMR is critical but VDE compliance is not required
SI8271BD-D-IS	Digital isolator-based driver, 4 A peak, 200 kV/μs CMR, wider 4.5–30 V supply range	No integrated UVLO; requires external supply monitoring; higher EMI susceptibility in unshielded layouts	Selected for ultra-fast switching (>100 kHz) where digital isolation timing precision outweighs analog simplicity

Compared with VOFD341A-X008T, ACPL-332J-000E offers superior CMR but reduced drive strength and no VDE rating, while SI8271BD-D-IS provides faster edges and broader supply range but demands external fault management and careful PCB layout to maintain noise immunity.

Availability

VOFD341A-X008T is available at Aetrix Electronics and suitable for industrial motor drives, induction cooking systems, and uninterruptible power supplies requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.

Supply support for VOFD341A-X008T 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

Vishay Semiconductors is a global leader in discrete semiconductors and optoelectronics, specializing in high-reliability, high-performance components for demanding industrial and automotive applications.

The VOFD341A-X008T belongs to Vishay's high-current optocoupler family designed specifically for robust, isolated gate driving in high-voltage power conversion systems operating up to 1200 V.

FAQ

What is the maximum gate capacitance the VOFD341A-X008T can reliably drive?

The VOFD341A-X008T is characterized with Rg = 10 Ω and Cg = 15 nF in its switching test circuits, delivering ≤200 ns propagation delay and ≤35 ns rise/fall times. At 3.0 A peak current and rail-to-rail swing, it supports gate charges up to ~150 nC-sufficient for 100 A/1200 V IGBTs. For larger modules, a discrete buffer stage is recommended per Vishay's application guidance.

Does the VOFD341A-X008T require an external pull-down resistor on the VO pin?

No, the VOFD341A-X008T features a totem-pole output stage with active high- and low-side drivers, eliminating the need for external pull-down resistors. Its rail-to-rail VO pin sources up to +2.5 A and sinks up to –2.5 A, ensuring fast, controlled gate discharge without passive components-reducing BOM count and layout area.

How does the shield pin (Pin 6) affect performance of the VOFD341A-X008T?

The shield pin (Pin 6) must be connected to VEE to suppress capacitive coupling between input and output sides. When properly tied, it increases common mode transient immunity from baseline levels to the specified 35 kV/μs. Leaving it floating or connecting it to another potential degrades CMR by >50% and risks false triggering in high-dV/dt environments like motor inverters.

What safety certifications apply to the VOFD341A-X008T variant?

The VOFD341A-X008T carries UL 1577 (5000 V_RMS), cUL, and DIN EN 60747-5-5 (VDE 0884-5) certifications with 8000 V_PEAK transient isolation voltage and 1140 V_PEAK repetitive peak voltage. Its stretched SO-6 (option 8) package provides 8 mm creepage and clearance, satisfying reinforced insulation requirements for industrial equipment per IEC 61800-5-1.

Can the VOFD341A-X008T operate with a 12 V supply on the output side?

No-the VOFD341A-X008T requires a minimum VCC–VEE supply of 15 V per its recommended operating conditions and UVLO turn-on threshold of 11.0 V. At 12 V, the internal UVLO disables output operation to prevent insufficient gate drive voltage, which could cause IGBT linear-mode operation and thermal failure. Operation is guaranteed only within 15–30 V.

VOFD341A-X008T Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Semiconductor Opto Division

Series:: -

Package/Case:: 6-SOIC (0.268", 6.80mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Optical Coupling

Number of Channels:: 1

Voltage - Isolation:: 5000Vrms

Common Mode Transient Immunity (Min):: 35kV/µs

Propagation Delay tpLH / tpHL (Max):: 200ns, 200ns

Pulse Width Distortion (Max):: 70ns

Rise / Fall Time (Typ):: 35ns, 35ns

Current - Output High, Low:: 2.5A, 2.5A

Current - Peak Output:: 3A

Voltage - Forward (Vf) (Typ):: 1.37V

Current - DC Forward (If) (Max):: 25 mA

Voltage - Output Supply:: 15V ~ 30V

Grade:: -

Qualification:: -

Operating Temperature:: -40°C ~ 125°C

Mounting Type:: Surface Mount

Supplier Device Package:: 6-SO Stretched

Approval Agency:: cUL, UL, VDE

VOFD341A-X008T FAQ

1.How can I place an order for VOFD341A-X008T through Aetrix?

Please submit a Request for Quotation (RFQ) for VOFD341A-X008T 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 VOFD341A-X008T reliable?

The price and inventory of VOFD341A-X008T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VOFD341A-X008T is usually 5 days.

3.What payment methods are accepted for VOFD341A-X008T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VOFD341A-X008T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VOFD341A-X008T?

VOFD341A-X008T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VOFD341A-X008T 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 VOFD341A-X008T?

For technical support, including VOFD341A-X008T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VOFD341A-X008T requirements.

6.How does Aetrix verify that VOFD341A-X008T is sourced from the original manufacturer or authorized distributors?

All VOFD341A-X008T 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 VOFD341A-X008T meets industry standards.

7.What is the process for return or replacement of VOFD341A-X008T?

All VOFD341A-X008T units undergo pre-shipment inspection (PSI). If there is an issue with VOFD341A-X008T, 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 VOFD341A-X008T part is unused and in its original packaging.

Return procedure for VOFD341A-X008T:

1.Submit a request within 90 days.

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

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