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Vishay Semiconductor Opto Division VOFD341A-X009T
- Part No.:
- VOFD341A-X009T
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- Isolators - Gate Drivers
- Package:
- 6-SOIC (0.268", 6.80mm Width)
- Datasheet:
-
VOFD341A-X009T.pdf
- Description:
- SMD-6 IGBT MOSFET DRIVER 3A
- Quantity:
- Payment:
- Shipping:
Inventory:3,477
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Product details
Overview
VOFD341A-X009T from Vishay Semiconductors is a 3 A output current, rail-to-rail IGBT and MOSFET gate driver optocoupler in stretched SO-6 (option 9) package, featuring 35 kV/μs common mode transient immunity, 200 ns max propagation delay, and -40 °C to +125 °C operating temperature range - designed for isolated gate driving in 1200 V / 100 A motor inverter stages.
For engineers reviewing the VOFD341A-X009T datasheet, VOFD341A-X009T pinout, VOFD341A-X009T application, or VOFD341A-X009T equivalent, this page delivers verified electrical specs, truth table–aligned pin functions, safety-rated isolation parameters, real-world motor drive use cases, and two validated alternative drivers with documented functional and application-level differences.
Technical Context
The VOFD341A-X009T integrates an AlGaAs LED optically coupled to a high-voltage IC output stage with UVLO (11.0–13.5 V turn-on, 9.5–12.0 V turn-off), rail-to-rail drive capability (VCC up to 30 V, VEE referenced), and dual-channel timing symmetry (max 100 ns propagation delay difference). It supports 75 kHz switching frequency with 50 ns min propagation delay under 10–16 mA input current.
Its stretched SO-6 (option 9) package provides 5000 VRMS UL1577 isolation and 6000 Vpeak transient withstand per DIN EN 60747-5-5, with creepage ≥7 mm and clearance ≥8 mm - enabling direct integration into industrial inverters requiring reinforced insulation without external level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 3.0 A peak - drives IGBT gates up to 1200 V / 100 A directly without external buffer stage |
| Propagation delay | ≤200 ns - enables precise timing control in high-frequency motor control PWM (up to 75 kHz) |
| CMR | 35 kV/μs - maintains signal integrity during fast dv/dt transients in inverter half-bridges |
| Supply range | 15 V to 30 V - compatible with standard industrial gate drive rails and supports wide bus voltage designs |
| Operating temp | -40 °C to +125 °C - qualified for under-hood automotive traction inverters and industrial furnace controllers |
| Isolation rating | 5000 VRMS (UL1577), 6000 Vpeak (DIN EN 60747-5-5) - meets reinforced insulation requirements for Class I equipment |
| UVLO threshold | 11.0–13.5 V turn-on, 9.5–12.0 V turn-off - prevents partial turn-on of power devices during brown-out conditions |
Pinout & Package
VOFD341A-X009T uses the stretched SO-6 (option 9) surface-mount package with 7 mm creepage and 8 mm clearance, optimized for high-voltage isolation in compact motor drive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A | Anode | LED anode input - requires 8–16 mA forward current for reliable VO high-state output |
| C | Cathode | LED cathode return - referenced to system ground on controller side |
| VO | Output | High-current gate drive output - rail-to-rail swing between VCC and VEE, capable of sourcing/sinking 3 A peak |
| VCC | Positive supply | Output stage positive rail - 15–30 V operation, powers high-side output path |
| VEE | Negative supply | Output stage negative rail - typically 0 V or negative bias for enhanced turn-off robustness |
| Shield | Internal shield | Electrostatic shield between LED and IC - critical for achieving 35 kV/μs CMR performance |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output stage | Drives IGBT gates fully to VCC or VEE - eliminates need for external pull-up/pull-down resistors in gate loop |
| UVLO with hysteresis | 1.5 V hysteresis ensures stable gate drive enable/disable during supply ramp-up/down - prevents shoot-through in half-bridge configurations |
| Truth-table aligned logic | LED ON → VO LOW; LED OFF → VO HIGH - matches standard inverting gate driver interface for microcontroller GPIO outputs |
| Stretched SO-6 option 9 | Optimized creepage/clearance for 6000 Vpeak transient isolation - reduces need for slotting or spacing on PCB |
| 35 kV/μs CMR | Rejects noise from high-dv/dt power switches - maintains clean gate signals even in 1200 V SiC inverter modules |
Applications
| AC Motor Inverter | Induction Cooktop |
|---|---|
|
Use Scenario: Three-phase inverter driving PMSM in HVAC compressor with 15 kHz PWM switching. IC Role / Device Role / Timing Role: Isolated gate driver delivering 3 A peak current to 600 V IGBTs, synchronized to MCU PWM with ≤200 ns latency. Use Value: Enables direct gate drive without discrete buffers, reducing BOM count and layout area while maintaining 35 kV/μs noise immunity across motor phase legs. |
Use Scenario: Half-bridge resonant inverter powering induction coil at 20–50 kHz in domestic cooktop. IC Role / Device Role / Timing Role: High-speed isolated driver controlling upper/lower IGBTs with matched tPLH/tPHL to minimize dead-time uncertainty. Use Value: 100 ns max propagation delay difference ensures precise dead-time control, preventing cross-conduction and improving thermal efficiency. |
| Industrial UPS | Brushless DC Drive |
|
Use Scenario: Online double-conversion UPS with bidirectional 1200 V SiC MOSFET inverter stage handling 10 kVA load. IC Role / Device Role / Timing Role: Reinforced-isolation gate driver providing 5000 VRMS galvanic separation between control MCU and high-voltage DC bus. Use Value: Meets UL1577 and DIN EN 60747-5-5 safety standards out-of-the-box - eliminates need for external isolation transformers or capacitors. |
Use Scenario: Field-oriented control (FOC) of 48 V BLDC motor in automated guided vehicle (AGV) with regenerative braking. IC Role / Device Role / Timing Role: Fast-turnoff driver with VEE-referenced low-side output ensuring rapid MOSFET turn-off during energy recovery. Use Value: Rail-to-rail output swing down to VEE enables active Miller clamp functionality - suppresses false turn-on during high di/dt commutation events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar IGBT/MOSFET gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ACPL-332J-000E | 2.5 A peak output, 150 ns max propagation delay, SO-6 package with 3750 VRMS isolation | Limited to ≤600 V IGBTs; lower CMR (25 kV/μs); no internal UVLO hysteresis | Preferred for cost-sensitive 400 V AC drives where full 1200 V rating and 35 kV/μs CMR are not required |
| SI8233AD-D-IS | Digital isolator-based driver, 4 A peak, 60 ns propagation delay, 5 kVRMS reinforced isolation | No integrated LED - requires external current-limiting resistor; higher EMI susceptibility due to lack of optical shielding | Selected when ultra-low latency (<100 ns) and programmable dead-time are prioritized over optical noise immunity |
Compared with VOFD341A-X009T, ACPL-332J-000E offers lower isolation and drive strength but reduced cost, while SI8233AD-D-IS trades optical noise rejection for faster timing and digital configurability - making VOFD341A-X009T optimal for high-noise, high-voltage motor inverter environments demanding proven optical robustness.
Availability
VOFD341A-X009T is available at Aetrix Electronics and suitable for AC motor inverters, induction cooktops, and industrial UPS systems requiring stable component supply with long-term lifecycle support and traceable sourcing.
Supply support for VOFD341A-X009T 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-voltage performance.
The VOFD341A series was developed specifically for isolated gate driving in high-power motor control inverters, targeting applications demanding robust noise immunity, wide temperature operation, and safety-certified reinforcement.
FAQ
What is the maximum recommended supply voltage for VOFD341A-X009T?
The VOFD341A-X009T supports a recommended operating supply range of 15 V to 30 V between VCC and VEE. Its absolute maximum rating is 35 V, but sustained operation above 30 V risks exceeding junction temperature limits and degrading UVLO accuracy. For reliable 1200 V IGBT drive, Vishay specifies 30 V as the maximum nominal rail - ensuring full 3 A peak output current and rail-to-rail swing without thermal derating.
Does VOFD341A-X009T include undervoltage lockout (UVLO) functionality?
Yes, VOFD341A-X009T integrates a precision UVLO circuit with turn-on threshold of 11.0–13.5 V and turn-off threshold of 9.5–12.0 V, yielding 1.5 V hysteresis. This prevents partial gate turn-on during power-up or brown-out conditions - a critical safeguard for IGBTs in motor inverters. The UVLO status directly controls the output stage, forcing VO high when supply falls below VUVLO−, ensuring safe device shutdown.
What safety certifications apply to VOFD341A-X009T?
VOFD341A-X009T carries UL1577 (5000 VRMS, 1 minute) and cUL recognition. As an option 9 part, it is rated to DIN EN 60747-5-5 with 6000 Vpeak transient isolation voltage and meets creepage (≥7 mm) and clearance (≥8 mm) requirements for reinforced insulation. It is not VDE-certified - that requires option 1 (X019T/X018T), which adds the X1 marking and 8000 Vpeak rating.
Can VOFD341A-X009T directly drive 1200 V SiC MOSFETs?
VOFD341A-X009T is rated for direct drive of IGBTs up to 1200 V / 100 A, and its 3 A peak output current, rail-to-rail swing, and 35 kV/μs CMR make it suitable for many 1200 V SiC MOSFET gate drive applications. However, SiC devices often require faster turn-on/turn-off and tighter Miller clamp control - verify gate charge (Qg), Miller plateau voltage, and required dV/dt immunity against actual SiC module specs before final selection.
What is the function of the Shield pin on VOFD341A-X009T?
The Shield pin on VOFD341A-X009T connects to an internal electrostatic shield between the input LED and output IC die. It must be tied to VEE (or system ground on the output side) to maximize common-mode transient immunity. Leaving it floating degrades CMR performance - Vishay measures 35 kV/μs only when Shield is properly connected, making it essential for noise-critical inverter half-bridge applications.
VOFD341A-X009T 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-X009T FAQ
1.How can I place an order for VOFD341A-X009T through Aetrix?
Please submit a Request for Quotation (RFQ) for VOFD341A-X009T 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-X009T reliable?
The price and inventory of VOFD341A-X009T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VOFD341A-X009T is usually 5 days.
3.What payment methods are accepted for VOFD341A-X009T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VOFD341A-X009T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VOFD341A-X009T?
VOFD341A-X009T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VOFD341A-X009T 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-X009T?
For technical support, including VOFD341A-X009T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VOFD341A-X009T requirements.
6.How does Aetrix verify that VOFD341A-X009T is sourced from the original manufacturer or authorized distributors?
All VOFD341A-X009T 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-X009T meets industry standards.
7.What is the process for return or replacement of VOFD341A-X009T?
All VOFD341A-X009T units undergo pre-shipment inspection (PSI). If there is an issue with VOFD341A-X009T, 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-X009T part is unused and in its original packaging.
Return procedure for VOFD341A-X009T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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