Overview
The UCC27517DBVT, produced by Texas Instruments, is a single-channel, high-speed, low-side gate driver device. It is designed to effectively drive MOSFET and IGBT power switches, offering superior performance and reliability. This device is particularly suited for applications requiring high peak-current pulses and minimal shoot-through current. The UCC27517DBVT operates over a wide voltage range and is compatible with emerging wide band-gap power-switching devices such as GaN power semiconductor devices.
Key Specifications
| Parameter | Value |
|---|---|
| Peak Drive Current (Source/Sink) | 4 A / 4 A |
| Propagation Delay | 13 ns (typical) |
| Rise and Fall Times | 9 ns (typical) and 7 ns (typical) |
| Supply Voltage Range | 4.5 V to 18 V |
| Operating Temperature Range | -40°C to 140°C |
| Package Type | SOT-23-5 |
| Undervoltage Lockout (UVLO) | 5 V |
| Input Logic Compatibility | TTL and CMOS compatible |
Key Features
- Low-cost gate-driver device offering superior replacement for NPN and PNP discrete solutions.
- Fast propagation delays and rise/fall times.
- Dual input design allowing for both inverting and noninverting configurations.
- Unused input pin can be used for enable or disable function.
- Outputs held low during VDD UVLO for glitch-free operation.
- TTL and CMOS compatible input logic thresholds independent of supply voltage.
- Wide hysteresis between high and low thresholds for high noise immunity.
- Internal pullup and pulldown resistors ensure outputs are held low when input pins are floating.
Applications
The UCC27517DBVT is suitable for a variety of applications, including but not limited to:
- Driving MOSFET and IGBT power switches.
- Emerging wide band-gap power-switching devices such as GaN power semiconductor devices.
- High-frequency power conversion systems.
- Motor control and drive systems.
- Power supplies and DC-DC converters.
Q & A
- What is the peak drive current capability of the UCC27517DBVT?
The UCC27517DBVT can source and sink up to 4 A of peak current. - What is the typical propagation delay of the UCC27517DBVT?
The typical propagation delay is 13 ns. - What is the operating voltage range of the UCC27517DBVT?
The device operates over a voltage range of 4.5 V to 18 V. - What type of input logic compatibility does the UCC27517DBVT have?
The device has TTL and CMOS compatible input logic thresholds. - Can the UCC27517DBVT be used in high-noise environments?
Yes, the device features wide hysteresis between high and low thresholds for high noise immunity. - How does the UCC27517DBVT handle floating input pins?
The device has internal pullup and pulldown resistors that ensure outputs are held low when input pins are floating. - What is the purpose of the undervoltage lockout (UVLO) feature?
The UVLO feature holds the output low outside the VDD operating range to ensure glitch-free operation during power up and power down. - Can the unused input pin be used for other functions?
Yes, the unused input pin can be used for enable or disable functions. - What types of power switches can the UCC27517DBVT drive?
The device can drive MOSFET and IGBT power switches. - Is the UCC27517DBVT suitable for high-frequency applications?
Yes, the device is suitable for high-frequency power conversion systems due to its fast switching characteristics.
