Overview
The UCC27511DBVT from Texas Instruments is a single-channel, high-speed, low-side gate-driver device designed to drive MOSFET and IGBT power switches efficiently. This device is part of the UCC27511 and UCC27512 series, known for their ability to minimize shoot-through current and provide rail-to-rail drive capability with extremely small propagation delays, typically 13 ns. The UCC27511DBVT operates over a wide supply voltage range of 4.5 to 18 V and a temperature range of -40°C to 140°C, making it suitable for various power-switching applications, including those involving emerging wide band-gap power-semiconductor devices such as GaN MOSFETs.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | UCC27511DBVT |
| Package Type | SOT-23 (DBV) |
| Pin Count | 6 |
| Peak Output Current | 4-A source, 8-A sink (asymmetrical drive) |
| Supply Voltage Range | 4.5 V to 18 V |
| Operating Temperature Range | -40°C to 140°C |
| Propagation Delay | 13 ns (typical) |
| Rise Time | 9 ns (typical) |
| Fall Time | 7 ns (typical) |
| Input Logic | TTL, CMOS compatible |
| Special Features | SPLIT output, UVLO, dual-input design |
Key Features
- Dual-Input Design: Allows for both inverting and non-inverting configurations using the same device, with the unused input pin usable for enable or disable functions.
- Split Output Configuration: Gate-drive current is sourced through OUTH pin and sunk through OUTL pin, enabling independent adjustment of turn-on and turn-off speeds.
- High Peak-Current Capability: 4-A source and 8-A sink (asymmetrical drive) to drive capacitive loads effectively.
- Fast Switching Times: Fast rise and fall times (9 ns and 7 ns typical) and small propagation delay (13 ns typical).
- Wide Operating Range: Operates over a wide supply voltage range (4.5 V to 18 V) and temperature range (-40°C to 140°C).
- Internal UVLO: Ensures outputs are held low outside the VDD operating range, providing glitch-free operation at power up and power down.
- Noise Immunity: Wide hysteresis between high and low thresholds offers excellent noise immunity.
Applications
- Power Switching Devices: Ideal for driving MOSFET, IGBT, and GaN power-semiconductor devices due to its best-in-class switching characteristics.
- High-Speed Applications: Suitable for applications requiring fast switching times and low propagation delays.
- Industrial and Automotive Systems: Can be used in various industrial and automotive systems that require reliable and efficient power switching.
Q & A
- What is the peak output current of the UCC27511DBVT?
The UCC27511DBVT has a peak output current of 4-A source and 8-A sink (asymmetrical drive).
- What is the propagation delay of the UCC27511DBVT?
The propagation delay is typically 13 ns.
- What are the input logic types supported by the UCC27511DBVT?
The device supports TTL and CMOS-compatible input logic).
- What is the operating temperature range of the UCC27511DBVT?
The operating temperature range is -40°C to 140°C).
- Does the UCC27511DBVT have internal UVLO circuitry?
Yes, the device has internal Undervoltage Lockout (UVLO) circuitry on the VDD pin).
- What is the purpose of the split output configuration in the UCC27511DBVT?
The split output configuration allows for independent adjustment of turn-on and turn-off speeds by applying different resistors to the OUTH and OUTL pins).
- Can the UCC27511DBVT be used with GaN MOSFETs?
Yes, the device is especially suited for driving emerging wide band-gap power-switching devices such as GaN MOSFETs).
- What is the package type of the UCC27511DBVT?
The package type is SOT-23 (DBV)).
- Is the UCC27511DBVT RoHS compliant?
Yes, the device is RoHS compliant.
- What are the typical rise and fall times of the UCC27511DBVT?
The typical rise time is 9 ns and the typical fall time is 7 ns).
