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Vishay Semiconductor Opto Division VOFD343A-X009T
- Part No.:
- VOFD343A-X009T
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- Isolators - Gate Drivers
- Package:
- 6-SOIC (0.268", 6.80mm Width)
- Datasheet:
-
VOFD343A-X009T.pdf
- Description:
- SMD-6 IGBT MOSFET DRIVER 4A
- Quantity:
- Payment:
- Shipping:
Inventory:3,605
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Product details
Overview
VOFD343A-X009T from Vishay Semiconductors is a 4 A output current IGBT and MOSFET gate driver optocoupler with rail-to-rail output stage, 35 kV/μs common mode rejection ratio, and -40 °C to +125 °C operating temperature range-designed for isolated gate driving in motor control inverters.
For engineers reviewing the VOFD343A-X009T datasheet, VOFD343A-X009T pinout, VOFD343A-X009T application, or VOFD343A-X009T equivalent, key selection criteria include peak output current (4.0 A), propagation delay (≤200 ns), UVLO thresholds (11.0–13.5 V), and stretched SO-6 (option 9) package isolation ratings.
Technical Context
The VOFD343A-X009T integrates an AlGaAs LED optically coupled to a high-voltage power IC output stage with independent high-side and low-side drive capability. Its rail-to-rail output supports gate drive voltages up to 30 V (VCC–VEE), enabling direct drive of IGBTs rated ≤1200 V / 100 A.
It features active UVLO with hysteresis (1.5 V), differential propagation delay ≤100 ns, and dual CMR ratings (35 kV/μs at both VO = high and VO = low), ensuring robust noise immunity in high-dv/dt inverter environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4.0 A - drives IGBT/MOSFET gates requiring high transient charge injection |
| Propagation Delay | ≤200 ns - enables switching at up to 75 kHz with tight timing control |
| CMR | 35 kV/μs - sustains reliable operation under fast common-mode transients in industrial inverters |
| Supply Voltage Range | 15 V to 30 V - accommodates wide bus voltage designs including 24 V and 28 V systems |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood and industrial ambient conditions |
| UVLO Threshold | 11.0–13.5 V (rising), 9.5–12.0 V (falling) - prevents erroneous turn-on during brownout |
| Isolation Voltage | 5000 VRMS (UL1577), 6000 Vpeak (DIN EN 60747-5-5) - meets reinforced insulation requirements |
Pinout & Package
VOFD343A-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 layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | LED input anode | Accepts 8–16 mA forward current to enable output stage |
| 2 (Cathode) | LED input cathode | Completes LED bias path; referenced to VEE for input logic compatibility |
| 3 (VEE) | Negative supply rail | Serves as low-side reference for output stage and UVLO monitoring |
| 4 (Shield) | Internal isolation shield | Connected to VEE externally to suppress capacitive coupling and enhance CMR |
| 5 (VO) | Power output terminal | Delivers rail-to-rail gate drive voltage between VCC and VEE (up to 30 V swing) |
| 6 (VCC) | Positive supply rail | Provides power to output stage; UVLO monitors this node relative to VEE |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output stage | Enables full VCC-to-VEE gate voltage swing without external level-shifting circuitry |
| 35 kV/μs CMR at both logic states | Guarantees stable output during simultaneous high dv/dt on power and signal sides |
| UVLO with 1.5 V hysteresis | Prevents partial turn-on of power devices during undervoltage conditions |
| Stretched SO-6 (option 9) package | Provides 6000 Vpeak transient isolation and 5000 VRMS withstand per UL/VDE standards |
| Differential propagation delay ≤100 ns | Minimizes shoot-through risk in half-bridge configurations with matched timing |
Applications
| AC Motor Drives | Induction Stove Top |
|---|---|
Use Scenario: Driving IGBT half-bridges in variable-frequency AC motor inverters for HVAC and industrial pumps. IC Role / Device Role / Timing Role: Isolated gate driver providing 4.0 A peak current and ≤200 ns propagation delay to switch 1200 V IGBTs. Use Value: Enables efficient 75 kHz PWM operation with precise dead-time control and immunity to 35 kV/μs common-mode noise. | Use Scenario: Controlling resonant IGBTs in induction cooking modules where EMI and thermal stress are critical. IC Role / Device Role / Timing Role: High-CMR optocoupler delivering rail-to-rail gate drive with UVLO protection across -40 °C to +125 °C. Use Value: Ensures reliable gate turn-on/turn-off despite rapid bus voltage transients and ambient temperature cycling. |
| Industrial Inverters | Uninterruptible Power Supplies |
Use Scenario: Gate driving in three-phase 400 V industrial inverters for servo and spindle control. IC Role / Device Role / Timing Role: Isolated driver with 15–30 V supply range and 4.0 A peak output supporting high-current gate charging. Use Value: Eliminates need for discrete level-shifters while maintaining >6000 Vpeak isolation for safety-critical systems. | Use Scenario: Driving IGBTs in online double-conversion UPS output stages requiring high reliability and long-term stability. IC Role / Device Role / Timing Role: Reinforced-isolation gate driver with 5000 VRMS rating and extended temperature qualification. Use Value: Supports continuous operation at elevated ambient temperatures with guaranteed UVLO behavior and low propagation skew. |
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, 15 kV/μs CMR, SO-6 package with 3750 VRMS isolation | Lower drive strength and noise immunity; suited for ≤600 V IGBTs in cost-sensitive consumer inverters | Select when 2.5 A peak current and 15 kV/μs CMR meet system requirements and lower isolation rating is acceptable |
| SI8233BD-D-IS | Digital isolator-based driver, 4 A peak, 35 kV/μs CMR, but requires external gate resistor and bootstrap diode | No integrated UVLO; needs external circuitry for undervoltage protection and level translation | Choose when digital isolation architecture is preferred and board space allows for added passive components |
Compared with ACPL-332J-000E and SI8233BD-D-IS, the VOFD343A-X009T delivers higher integrated drive capability (4.0 A), built-in UVLO with hysteresis, and reinforced isolation in a single stretched SO-6 package-reducing BOM count and layout complexity for high-reliability industrial gate driving.
Availability
VOFD343A-X009T is available at Aetrix Electronics and suitable for AC motor drives, induction stove top controls, industrial inverters, and uninterruptible power supplies requiring stable component supply, long-lifecycle support, and certified reinforced isolation.
Supply support for VOFD343A-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 Semiconductors is a global manufacturer of discrete semiconductors and passive components, specializing in high-reliability optoelectronics, power MOSFETs, and precision resistors.
The VOFD343A series belongs to Vishay's high-speed optocoupler product line, engineered specifically for isolated gate driving in high-voltage, high-noise industrial motor control and power conversion systems.
FAQ
What is the maximum peak output current specification for VOFD343A-X009T?
The VOFD343A-X009T has a maximum peak output current of 4.0 A, as specified in the Absolute Maximum Ratings table under "High peak output current" and "Low peak output current." This rating applies to pulse widths ≤0.3 μs and enables direct gate driving of IGBTs rated up to 1200 V / 100 A. The device maintains this current capability across its full -40 °C to +125 °C operating temperature range, making VOFD343A-X009T suitable for demanding industrial inverter applications.
Does VOFD343A-X009T include undervoltage lockout (UVLO) functionality?
Yes, VOFD343A-X009T includes integrated undervoltage lockout with hysteresis. Its rising UVLO threshold is 11.0–13.5 V and falling threshold is 9.5–12.0 V, resulting in 1.5 V hysteresis. This feature prevents unreliable gate drive during insufficient supply conditions and is monitored across the VCC–VEE differential. The UVLO behavior is fully characterized over temperature and supply voltage, ensuring robust operation in VOFD343A-X009T-based motor control designs.
What isolation certifications apply to VOFD343A-X009T?
VOFD343A-X009T carries UL1577 (5000 VRMS, 1 minute) and cUL recognition. As a stretched SO-6 (option 9) variant, it is also rated to DIN EN 60747-5-5 with VIOTM = 6000 Vpeak and VIORM = 891 Vpeak. It achieves 7 mm creepage and 8 mm clearance, meeting reinforced insulation requirements for industrial equipment. These certifications are explicitly documented for the X009T suffix in the Ordering Information and Safety and Insulation Ratings sections of the datasheet.
What is the propagation delay performance of VOFD343A-X009T?
VOFD343A-X009T guarantees maximum propagation delays of 200 ns for both tPLH (low-to-high) and tPHL (high-to-low), with a maximum propagation delay difference (PDD) of ±100 ns between channels. These values are measured under standard conditions: VCC–VEE = 30 V, Rg = 10 Ω, Cg = 15 nF, IF = 7–16 mA, and 20 kHz PWM. This timing performance supports high-frequency switching up to 75 kHz while minimizing shoot-through risk in half-bridge configurations using VOFD343A-X009T.
How does the shield pin (Pin 4) function in VOFD343A-X009T?
The shield pin (Pin 4) in VOFD343A-X009T is an internal isolation barrier shield that must be externally connected to VEE (Pin 3) to maximize common-mode transient immunity. When tied to VEE, it suppresses capacitive coupling between input and output die, enabling the specified 35 kV/μs CMR at both VO = high and VO = low states. Leaving Pin 4 unconnected degrades CMR performance and violates the recommended layout per the datasheet's Test Circuits and Application Notes-making proper shield connection essential for VOFD343A-X009T reliability in noisy inverter environments.
VOFD343A-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:
- 3A, 3A
- Current - Peak Output:
- 4A
- 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
VOFD343A-X009T FAQ
1.How can I place an order for VOFD343A-X009T through Aetrix?
Please submit a Request for Quotation (RFQ) for VOFD343A-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 VOFD343A-X009T reliable?
The price and inventory of VOFD343A-X009T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VOFD343A-X009T is usually 5 days.
3.What payment methods are accepted for VOFD343A-X009T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VOFD343A-X009T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VOFD343A-X009T?
VOFD343A-X009T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VOFD343A-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 VOFD343A-X009T?
For technical support, including VOFD343A-X009T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VOFD343A-X009T requirements.
6.How does Aetrix verify that VOFD343A-X009T is sourced from the original manufacturer or authorized distributors?
All VOFD343A-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 VOFD343A-X009T meets industry standards.
7.What is the process for return or replacement of VOFD343A-X009T?
All VOFD343A-X009T units undergo pre-shipment inspection (PSI). If there is an issue with VOFD343A-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 VOFD343A-X009T part is unused and in its original packaging.
Return procedure for VOFD343A-X009T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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