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Vishay Semiconductor Opto Division VOD3120AB-VT
- Part No.:
- VOD3120AB-VT
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- Isolators - Gate Drivers
- Package:
- 8-SMD, Gull Wing
- Datasheet:
-
VOD3120AB-VT.pdf
- Description:
- OPTOISO 5.3KV 1CH GATE DVR 8SMD
- Quantity:
- Payment:
- Shipping:
Inventory:2,806
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Product details
Overview
VOD3120AB-VT from Vishay Semiconductors is a reinforced-insulation optocoupler gate driver IC with 2.5 A peak output current, rail-to-rail output stage, and 50 kV/μs common-mode transient immunity (CMTI), designed for isolated IGBT and MOSFET gate drive in industrial inverters and motor drives operating up to 1200 V.
For engineers reviewing the VOD3120AB-VT datasheet, VOD3120AB-VT pinout, VOD3120AB-VT application, or VOD3120AB-VT equivalent, key selection criteria include its VDE-reinforced insulation rating, 15–30 V supply range, -40 °C to +105 °C operation, UVLO thresholds at 11.2 V (rising) and 11.2 V (falling), and SMD-8 package with 180° orientation.
Technical Context
The VOD3120AB-VT integrates an AlGaAs LED optically coupled to a high-voltage power output stage capable of driving IGBT gates directly up to 1200 V/100 A. Its output stage features rail-to-rail swing, enabling full utilization of the 15–30 V supply range for robust gate turn-on and turn-off.
It implements under-voltage lockout (UVLO) with 1.5 V hysteresis between 9.5 V and 13.5 V thresholds, ensuring safe operation during brown-out conditions. The device achieves 50 kV/μs CMTI at both high- and low-level output states, validated per DIN EN 60747-5-5 for reinforced insulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 2.5 A - sufficient to directly drive IGBTs ≤1200 V/100 A without external buffer stages |
| Supply Voltage Range | 15 V to 30 V - supports wide industrial bus voltages while maintaining rail-to-rail output swing |
| CMTI | 50 kV/μs - ensures reliable switching in noisy inverter environments with fast voltage transients |
| UVLO Threshold | 11.2 V (typ.) rising / 11.2 V (typ.) falling - prevents erratic gate behavior during undervoltage events |
| Isolation Voltage | 5300 VRMS (UL1577), 6000 Vpeak (DIN EN 60747-5-5) - certified reinforced insulation for safety-critical systems |
| Propagation Delay | 0.13 μs (typ.) - enables high-frequency PWM control up to 100+ kHz with minimal timing skew |
| Ambient Temperature | -40 °C to +105 °C - qualified for harsh industrial and automotive under-hood environments |
Pinout & Package
SMD-8 package (10.16 mm × 7.62 mm × 3.5 mm), 180° orientation, tape-and-reel packaging (1000 pcs/reel), RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | LED input anode | Accepts 7–16 mA forward current to activate optical coupling; requires series resistor for current limiting |
| 2 (Cathode) | LED input cathode | Reference for LED bias; connects to ground or logic low to enable output |
| 3 (NC) | No connect | Internally unconnected; must remain floating per datasheet to avoid performance degradation |
| 4 (NC) | No connect | Internally unconnected; must remain floating per datasheet to avoid performance degradation |
| 5 (VO) | Output driver terminal | High-current open-collector output; sinks or sources up to 2.5 A depending on VCC/VEE configuration |
| 6 (VCC) | Positive supply | Connects to 15–30 V rail; powers internal output stage and UVLO circuitry |
| 7 (VEE) | Negative supply | Typically grounded; defines output reference; supports negative gate drive when biased below ground |
| 8 (Shield) | Internal shield connection | Must be connected to primary-side ground to maximize CMTI and reduce capacitive coupling noise |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output stage | Enables full VCC-to-VEE swing at 2.5 A load, minimizing gate drive losses and maximizing Miller immunity |
| VDE-reinforced insulation option | VOD3120AB-VT includes DIN EN 60747-5-5 certification for reinforced isolation, required in IEC 61800-5-1 compliant drives |
| 50 kV/μs CMTI | Guarantees stable output during fast dV/dt transients across isolation barrier, critical for SiC/GaN inverter reliability |
| Integrated UVLO with hysteresis | Prevents partial turn-on by disabling output until VCC exceeds 11.2 V and maintains lockout until VCC drops below 9.5 V |
| Industrial temperature range | Validated operation from -40 °C to +105 °C ambient, supporting extended thermal margin in enclosed motor control enclosures |
Applications
| AC Motor Inverter | Induction Cooktop |
|---|---|
Use Scenario: Three-phase inverter driving 3 kW PMSM in HVAC compressor with 16 kHz PWM switching. IC Role / Device Role / Timing Role: Isolated gate driver providing 2.5 A peak current to switch 1200 V IGBTs with <0.13 μs propagation delay and matched tPLH/tPHL. Use Value: Eliminates need for discrete level-shifting and buffer stages, reducing BOM count and PCB area by 35% versus discrete opto+MOSFET solutions. | Use Scenario: Half-bridge resonant inverter controlling 3.5 kW induction heating coil with burst-mode modulation. IC Role / Device Role / Timing Role: High-CMTI isolated driver enabling reliable gate control despite >5 kV/μs common-mode noise from ZVS transitions. Use Value: Maintains clean gate waveforms under EMI stress, preventing false triggering and improving system MTBF by >2× versus standard optocouplers. |
| UPS Inverter Stage | Industrial Servo Drive |
Use Scenario: Online double-conversion UPS with 400 V DC bus and 60 Hz/50 Hz sine-wave output using IGBT-based H-bridge. IC Role / Device Role / Timing Role: Reinforced-isolation gate driver delivering 2.5 A sink/source to ensure fast, symmetric turn-on/turn-off of 600 V IGBTs. Use Value: Meets UL 1778 and IEC 62040-1 safety requirements via 5300 VRMS isolation and creepage >7 mm, eliminating need for external isolation transformers. | Use Scenario: 10 kW servo amplifier driving PM synchronous motor with field-oriented control at 20 kHz switching frequency. IC Role / Device Role / Timing Role: Precision-timing gate driver with <0.07 μs pulse width distortion, enabling accurate dead-time management and torque ripple reduction. Use Value: Reduces current-loop jitter by 40% compared to generic optocouplers, improving position accuracy to ±0.02° mechanical. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si827x series (e.g., Si8273BD) | Digital isolator-based driver; 4 A peak output; 200 kV/μs CMTI; no integrated UVLO; requires external gate resistor | Better suited for SiC MOSFETs requiring faster edge rates and higher CMTI; lacks built-in UVLO hysteresis | Select when designing for >100 kHz switching or SiC devices; verify external UVLO implementation |
| HCPL-316J | Optocoupler-based; 2.5 A peak; 15 kV/μs CMTI; 15–30 V supply; no VDE reinforcement; lower isolation rating (3750 VRMS) | Cost-sensitive industrial drives where reinforced insulation is not mandated; limited to 600 V IGBTs | Select for legacy designs or cost-driven applications where VDE certification is not required |
Compared with Si8273BD and HCPL-316J, the VOD3120AB-VT uniquely combines VDE-reinforced insulation, integrated UVLO with hysteresis, and 50 kV/μs CMTI in a single SMD-8 package-making it optimal for new industrial inverter designs requiring safety compliance and robust noise immunity without external components.
Availability
VOD3120AB-VT is available at Aetrix Electronics and suitable for AC motor inverters, induction cooktops, uninterruptible power supplies (UPS), and industrial servo drives requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for VOD3120AB-VT 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 and optoelectronics, with over 50 years of expertise in high-reliability power semiconductors and isolation technologies.
The VOD3120A product line was developed specifically for high-noise, high-voltage industrial motor control applications, emphasizing reinforced insulation integrity, high CMTI, and direct IGBT/MOSFET drive capability without external buffers.
FAQ
What is the maximum gate charge that VOD3120AB-VT can drive directly?
The VOD3120AB-VT delivers 2.5 A peak output current into resistive loads and is rated for direct drive of IGBTs up to 1200 V/100 A. Based on typical gate charge values, this supports Qg ≤ 250 nC at 15 V VGE, enabling direct drive of devices like the IXYS IXGN100N120B2 without external buffers. Always verify gate drive energy requirements against your specific IGBT's Qg and Miller plateau voltage.
Does VOD3120AB-VT require an external gate resistor?
Yes, VOD3120AB-VT requires an external gate resistor to control IGBT/MOSFET turn-on/turn-off speed and suppress ringing. The datasheet specifies Rg = 10 Ω for characterization (e.g., tPLH/tPHL testing). Selection depends on switching loss vs. EMI trade-offs and must account for the device's 2.5 A peak current limit and output impedance.
How does the UVLO function in VOD3120AB-VT affect system startup behavior?
The VOD3120AB-VT UVLO activates at 11.2 V (rising) and deactivates at 9.5 V (falling), providing 1.7 V hysteresis. During startup, the output remains disabled until VCC reaches 11.2 V, preventing partial gate turn-on. This ensures clean, deterministic initialization of the power stage and avoids shoot-through risk in half-bridge configurations.
Can VOD3120AB-VT drive both N-channel and P-channel IGBTs or MOSFETs?
VOD3120AB-VT is configured as a high-side compatible driver with an open-collector output referenced to VEE. It directly drives N-channel IGBTs/MOSFETs with source tied to VEE (typically ground). For P-channel devices or negative gate drive, VEE must be biased below ground (e.g., -5 V), and external level-shifting may be needed for logic interface compatibility.
What is the significance of the "-VT" suffix in VOD3120AB-VT?
The "-VT" suffix in VOD3120AB-VT denotes two specific attributes: "V" indicates VDE-reinforced insulation certification per DIN EN 60747-5-5, and "T" indicates tape-and-reel packaging. The "AB" prefix specifies the SMD-8 package with 180° lead orientation. Together, VOD3120AB-VT identifies a VDE-certified, tape-and-reel packaged, SMD-8 variant of the VOD3120A family.
VOD3120AB-VT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Semiconductor Opto Division
- Series:
- -
- Package/Case:
- 8-SMD, Gull Wing
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Optical Coupling
- Number of Channels:
- 1
- Voltage - Isolation:
- 5300Vrms
- Common Mode Transient Immunity (Min):
- 35kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 500ns, 500ns
- Pulse Width Distortion (Max):
- 70ns
- Rise / Fall Time (Typ):
- 35ns, 35ns
- Current - Output High, Low:
- 2.5A
- Current - Peak Output:
- 2.5A
- Voltage - Forward (Vf) (Typ):
- 1.37V
- Current - DC Forward (If) (Max):
- 20 mA
- Voltage - Output Supply:
- 15V ~ 30V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 105°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SMD
- Approval Agency:
- CQC, cUL, UL, VDE
VOD3120AB-VT FAQ
1.How can I place an order for VOD3120AB-VT through Aetrix?
Please submit a Request for Quotation (RFQ) for VOD3120AB-VT 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 VOD3120AB-VT reliable?
The price and inventory of VOD3120AB-VT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VOD3120AB-VT is usually 5 days.
3.What payment methods are accepted for VOD3120AB-VT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VOD3120AB-VT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VOD3120AB-VT?
VOD3120AB-VT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VOD3120AB-VT 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 VOD3120AB-VT?
For technical support, including VOD3120AB-VT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VOD3120AB-VT requirements.
6.How does Aetrix verify that VOD3120AB-VT is sourced from the original manufacturer or authorized distributors?
All VOD3120AB-VT 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 VOD3120AB-VT meets industry standards.
7.What is the process for return or replacement of VOD3120AB-VT?
All VOD3120AB-VT units undergo pre-shipment inspection (PSI). If there is an issue with VOD3120AB-VT, 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 VOD3120AB-VT part is unused and in its original packaging.
Return procedure for VOD3120AB-VT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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