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Vishay Semiconductor Opto Division VOFD341A-X018T
- Part No.:
- VOFD341A-X018T
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- Isolators - Gate Drivers
- Package:
- 6-SOIC (0.268", 6.80mm Width)
- Datasheet:
-
VOFD341A-X018T.pdf
- Description:
- SMD-6 IGBT MOSFET DRIVER 3A
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
VOFD341A-X018T from Vishay Semiconductors is a 3 A output current optocoupled IGBT/MOSFET gate driver with rail-to-rail output stage, 35 kV/μs common mode transient immunity, and -40 °C to +125 °C operating temperature range-designed for isolated gate drive in industrial inverters and UPS systems.
For engineers reviewing the VOFD341A-X018T datasheet, VOFD341A-X018T pinout, VOFD341A-X018T application, or VOFD341A-X018T 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 package with VDE certification per DIN EN 60747-5-5.
Technical Context
The VOFD341A-X018T integrates an AlGaAs LED optically coupled to a high-voltage power IC output stage capable of driving IGBTs up to 1200 V / 100 A directly. Its dual-channel logic-controlled output supports high-side/low-side switching with independent UVLO monitoring on both supply rails (VCC and VEE).
It features a rail-to-rail output stage delivering ±3.0 A peak current, 50–200 ns propagation delay (tPLH/tPHL), and pulse width distortion ≤70 ns under 20 kHz, 50 % duty cycle conditions with 10 Ω gate resistance and 15 nF load capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | ±3.0 A peak - sufficient to directly drive 1200 V / 100 A IGBT gates without external buffer stage |
| Propagation Delay | ≤200 ns - enables high-frequency PWM operation up to 75 kHz with timing predictability |
| CMR | 35 kV/μs minimum - maintains signal integrity in noisy motor inverter environments with fast dv/dt transients |
| Supply Range | 15 V to 30 V (VCC–VEE) - compatible with standard industrial gate drive supply rails |
| UVLO Threshold | VUVLO+ = 11.0–13.5 V, VUVLO− = 9.5–12.0 V - prevents unreliable gate switching during brown-out conditions |
| Operating Temp | −40 °C to +125 °C - supports deployment in under-hood automotive inverters and industrial enclosures |
| Isolation Voltage | VIOTM = 8000 Vpeak (DIN EN 60747-5-5, option 8) - meets reinforced insulation requirements for safety-critical drives |
Pinout & Package
VOFD341A-X018T uses the stretched SO-6 (option 8) surface-mount package with 8 mm creepage and clearance distances, 0.4 mm minimum insulation thickness, and VDE-certified isolation per DIN EN 60747-5-5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | LED input anode | Receives forward current (8–16 mA typical) to activate optical coupling; requires series resistor for current limiting |
| 2 (Cathode) | LED input cathode | Completes LED forward path; referenced to VEE for level-shifted control signals |
| 3 (VEE) | Negative output supply | Serves as low-side reference for output stage; enables negative gate drive capability down to −5 V |
| 4 (Shield) | Internal isolation shield | Connected to VEE externally to suppress capacitive coupling noise and enhance CMR performance |
| 5 (VCC) | Positive output supply | Provides high-side rail for output stage; must be decoupled with ≥0.1 µF capacitor near pin |
| 6 (VO) | Power output terminal | Delivers rail-to-rail gate drive voltage (VCC to VEE) with ±3.0 A peak sourcing/sinking capability |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output stage | Drives IGBT gates from VEE to VCC without dead-band, enabling full utilization of gate voltage swing for optimal switching loss control |
| 35 kV/μs CMR | Rejects fast common-mode transients induced by power device switching, preventing false triggering in high-dv/dt inverter legs |
| Dual UVLO monitoring | Independent undervoltage lockout on VCC and VEE rails ensures safe disable when either supply falls below operational threshold |
| Stretched SO-6 (option 8) | Provides 8 mm creepage/clearance and 8000 Vpeak transient isolation - certified to DIN EN 60747-5-5 for reinforced insulation |
| −40 °C to +125 °C operation | Guarantees functional performance across full industrial temperature range without derating or thermal shutdown |
Applications
| AC Motor Drives | Uninterruptible Power Supplies |
|---|---|
Use Scenario: Driving IGBT half-bridge in variable-frequency AC induction motor inverters for HVAC and industrial pumps. IC Role / Device Role / Timing Role: Isolated gate driver providing level-shifted, high-current gate signals with precise timing and noise immunity. Use Value: Enables reliable 20 kHz PWM switching with <200 ns propagation delay and 35 kV/μs CMR to suppress inverter leg shoot-through risks. | Use Scenario: Controlling bidirectional IGBT switches in online double-conversion UPS inverters and rectifiers. IC Role / Device Role / Timing Role: Optically isolated gate driver ensuring galvanic separation between control logic and high-power DC bus stages. Use Value: Supports 75 kHz max operating frequency and 125 °C junction temperature for compact, fanless UPS designs with high reliability. |
| Induction Cooking Systems | Industrial Solar Inverters |
Use Scenario: Gate driving resonant IGBTs in high-efficiency induction stove top power stages operating at 20–50 kHz. IC Role / Device Role / Timing Role: High-speed, high-CMR optocoupler delivering precise gate timing while rejecting EMI from adjacent cooking zones. Use Value: Maintains <70 ns pulse width distortion and >35 kV/μs CMR to prevent cross-talk and ensure stable zero-voltage switching. | Use Scenario: Driving high-voltage IGBTs in string-level solar inverters requiring 1000 V DC bus isolation and thermal robustness. IC Role / Device Role / Timing Role: Reinforced-isolation gate driver meeting DIN EN 60747-5-5 (VDE) for grid-tied photovoltaic applications. Use Value: Delivers 8000 Vpeak transient isolation and −40 °C to +125 °C operation for outdoor-rated inverters with 25+ year field life. |
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, 15 kV/μs CMR, SO-6 package with UL/cUL only (no VDE) | Limited to lower dv/dt environments; not rated for VDE-reinforced insulation | Select when cost sensitivity outweighs need for VDE certification and higher CMR |
| SI8261AD-D-IS | Digital isolator-based gate driver, 4 A peak, 35 kV/μs CMR, but requires external gate resistor and level-shifting logic | Higher integration complexity; no integrated UVLO hysteresis or rail-to-rail output stage | Select when system-level digital control architecture favors CMOS-isolated drivers over optocouplers |
Compared with VOFD341A-X018T, ACPL-332J-000E offers lower cost but reduced noise immunity and safety certification, while SI8261AD-D-IS provides higher peak current but demands additional external components and lacks native UVLO hysteresis-making VOFD341A-X018T optimal for drop-in, VDE-compliant, high-reliability IGBT gate drive.
Availability
VOFD341A-X018T is available at Aetrix Electronics and suitable for industrial inverters, uninterruptible power supplies, and induction cooking systems requiring stable component supply with VDE-certified reinforced isolation.
Supply support for VOFD341A-X018T 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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, optoelectronics, and passive devices with emphasis on reliability and high-performance industrial applications.
The VOFD341A product line delivers optically isolated gate drivers engineered for high-noise motor control, UPS, and power conversion systems where safety, timing precision, and thermal resilience are critical.
FAQ
What is the isolation rating of VOFD341A-X018T?
VOFD341A-X018T has a maximum transient isolation voltage (VIOTM) of 8000 Vpeak per DIN EN 60747-5-5, achieved via its stretched SO-6 (option 8) package with 8 mm creepage and clearance. It also meets UL1577 (5000 VRMS, 1 min) and carries cUL recognition. This qualifies it for reinforced insulation in safety-critical applications like industrial drives and UPS.
Does VOFD341A-X018T support negative gate drive?
Yes, VOFD341A-X018T supports negative gate drive through its dual-supply architecture: VEE serves as the negative reference rail, and the rail-to-rail output stage can sink current down to VEE + 0.25 V (typical). With VEE biased at −5 V, it enables active Miller clamping and improved turn-off immunity for high-side IGBTs.
What is the purpose of the Shield pin (Pin 4) on VOFD341A-X018T?
The Shield pin (Pin 4) on VOFD341A-X018T is an internal isolation barrier shield connected to the input side's cathode potential. It must be externally tied to VEE to minimize capacitive coupling between input and output, thereby maximizing common-mode transient immunity (CMR) up to 35 kV/μs and reducing false triggering in high-dv/dt environments.
Can VOFD341A-X018T drive 1700 V IGBTs directly?
No, VOFD341A-X018T is specified for direct drive of IGBTs rated up to 1200 V / 100 A. For 1700 V IGBTs, Vishay recommends using VOFD341A-X018T to drive a discrete power stage (e.g., complementary MOSFET pair) that then interfaces with the higher-voltage IGBT gate-ensuring adequate voltage margin and safe operating area compliance.
What are the UVLO hysteresis characteristics of VOFD341A-X018T?
VOFD341A-X018T features asymmetric UVLO with turn-on threshold VUVLO+ = 11.0–13.5 V and turn-off threshold VUVLO− = 9.5–12.0 V, yielding a guaranteed hysteresis of ≥1.5 V. This prevents oscillatory behavior during supply ramp-up/down and ensures clean, glitch-free output enable/disable transitions under marginal supply conditions.
VOFD341A-X018T 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-X018T FAQ
1.How can I place an order for VOFD341A-X018T through Aetrix?
Please submit a Request for Quotation (RFQ) for VOFD341A-X018T 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-X018T reliable?
The price and inventory of VOFD341A-X018T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VOFD341A-X018T is usually 5 days.
3.What payment methods are accepted for VOFD341A-X018T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VOFD341A-X018T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VOFD341A-X018T?
VOFD341A-X018T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VOFD341A-X018T 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-X018T?
For technical support, including VOFD341A-X018T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VOFD341A-X018T requirements.
6.How does Aetrix verify that VOFD341A-X018T is sourced from the original manufacturer or authorized distributors?
All VOFD341A-X018T 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-X018T meets industry standards.
7.What is the process for return or replacement of VOFD341A-X018T?
All VOFD341A-X018T units undergo pre-shipment inspection (PSI). If there is an issue with VOFD341A-X018T, 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-X018T part is unused and in its original packaging.
Return procedure for VOFD341A-X018T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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