Overview
The UCC27517DBVR from Texas Instruments is a high-speed, single-channel, low-side gate driver designed to drive MOSFET and IGBT power switches efficiently. This device is part of the UCC27516 and UCC27517 family, known for their superior performance and versatility. The UCC27517DBVR offers a low-cost solution that can replace traditional NPN and PNP discrete solutions, providing symmetrical drive capabilities with 4-A peak-source and 4-A peak-sink currents. It features fast propagation delays of 13 ns and fast rise and fall times of 9 ns and 7 ns, respectively, making it ideal for high-speed applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Drive Current (Source/Sink) | 4 A / 4 A | A |
| Propagation Delay | 13 ns | ns |
| Rise Time | 9 ns | ns |
| Fall Time | 7 ns | ns |
| Supply Voltage Range | 4.5 to 18 V | V |
| Operating Temperature Range | –40°C to 140°C | °C |
| Undervoltage Lockout (UVLO) | Typically 4.2 V with 300-mV hysteresis | V |
| Input Logic Threshold | TTL and CMOS compatible | - |
| Package Type | SOT-23 (5-pin) | - |
Key Features
- Symmetrical Drive Capability: 4-A peak-source and 4-A peak-sink currents.
- Fast Switching Characteristics: Fast propagation delays (13 ns typical), rise time (9 ns typical), and fall time (7 ns typical).
- Wide Supply Voltage Range: Operates over a range of 4.5 to 18 V.
- Undervoltage Lockout (UVLO): Ensures glitch-free operation at power up and power down, with a typical UVLO of 4.2 V and 300-mV hysteresis.
- Dual Input Design: Allows for both inverting and noninverting configurations with the same device.
- Noise Immunity: Wide hysteresis between high and low thresholds for excellent noise immunity.
- Compatibility: TTL and CMOS compatible input logic thresholds, independent of supply voltage.
- Thermal Performance: Available in packages with exposed thermal pads for improved thermal management.
Applications
- Switched-Mode Power Supplies: Ideal for driving power switches in SMPS applications.
- DC-DC Converters: Suitable for high-efficiency DC-DC conversion.
- Wide Band-Gap Power-Switching Devices: Especially suited for driving emerging GaN power semiconductor devices.
- Motor Control and Inverter Systems: Can be used in motor control and inverter systems requiring high-speed switching.
Q & A
- What is the peak drive current capability of the UCC27517DBVR?
The UCC27517DBVR has a peak drive current capability of 4 A for both source and sink currents.
- What is the typical propagation delay of the UCC27517DBVR?
The typical propagation delay is 13 ns.
- What is the operating temperature range of the UCC27517DBVR?
The operating temperature range is –40°C to 140°C.
- What type of input logic thresholds does the UCC27517DBVR support?
The device supports TTL and CMOS compatible input logic thresholds.
- How does the undervoltage lockout (UVLO) feature work in the UCC27517DBVR?
The UVLO feature holds the output low when the supply voltage is below the operating range, ensuring glitch-free operation during power up and power down.
- Can the UCC27517DBVR be used in both inverting and noninverting configurations?
- What is the package type of the UCC27517DBVR?
The device is available in a 5-pin SOT-23 package.
- Is the UCC27517DBVR suitable for driving GaN power semiconductor devices?
- How does the device handle floating input pins?
- What are some common applications of the UCC27517DBVR?
