Overview
The UCC27517ADBVT from Texas Instruments is a single-channel, high-speed, low-side gate driver device designed to effectively drive MOSFET and IGBT power switches. This device is part of the UCC27517 series, which offers superior performance and flexibility in various power switching applications. The UCC27517ADBVT is particularly suited for driving emerging wide band-gap power-switching devices such as GaN power semiconductor devices due to its best-in-class switching characteristics and wide operating voltage range.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Drive Current (Source/Sink) | 4 A / 4 A | A |
| Propagation Delay (Typical) | 13 ns | ns |
| Rise and Fall Times (Typical) | 9 ns / 7 ns | ns |
| Supply Voltage Range | 4.5 V to 18 V | V |
| Operating Temperature Range | -40°C to 140°C | °C |
| Package Type | SOT-23 (DBV) | - |
| Number of Pins | 5 | - |
| UVLO Threshold | 3.91 V to 4.65 V | V |
Key Features
- Low-cost gate-driver device offering superior replacement for NPN and PNP discrete solutions.
- Fast propagation delays (13-ns typical) and fast rise and fall times (9-ns and 7-ns typical).
- 4-A peak-source and 4-A peak-sink symmetrical drive capability.
- Wide supply voltage range of 4.5 V to 18 V.
- Outputs held low during VDD undervoltage lockout (UVLO) for glitch-free operation.
- TTL and CMOS compatible input logic thresholds, independent of supply voltage.
- Hysteretic logic thresholds for high noise immunity.
- Dual input design allowing for inverting (IN pin) or noninverting (IN+ pin) configurations.
- Unused input pin can be used for enable or disable function.
- Outputs held low when input pins are floating.
- Input pin absolute maximum voltage levels not restricted by VDD pin bias supply voltage.
Applications
The UCC27517ADBVT is suitable for a variety of applications, including:
- Driving MOSFET and IGBT power switches in high-frequency switching applications.
- Emerging wide band-gap power-switching devices such as GaN power semiconductor devices.
- Power supplies, DC-DC converters, and motor control systems.
- Industrial and automotive power electronics where high reliability and low noise are critical.
Q & A
- What is the peak drive current capability of the UCC27517ADBVT?
The UCC27517ADBVT has a peak drive current capability of 4 A source and 4 A sink.
- What is the typical propagation delay of the UCC27517ADBVT?
The typical propagation delay is 13 ns.
- What is the operating temperature range of the UCC27517ADBVT?
The operating temperature range is -40°C to 140°C.
- What are the package options for the UCC27517ADBVT?
The device is available in a 5-pin SOT-23 (DBV) package.
- Is the UCC27517ADBVT compatible with TTL and CMOS logic?
- How does the UCC27517ADBVT handle floating input pins?
The outputs are held low when the input pins are floating, ensuring safe operation.
- What is the purpose of the undervoltage lockout (UVLO) feature?
The UVLO feature holds the output low outside the VDD operating range, ensuring glitch-free operation at power up and power down.
- Can the unused input pin be used for other functions?
- What is the significance of the dual input design?
The dual input design allows for both inverting (IN pin) and noninverting (IN+ pin) configurations with the same device.
- How does the UCC27517ADBVT handle noise immunity?
The device features hysteretic logic thresholds for high noise immunity.
