Overview
The UCC27511DBVR is a single-channel, high-speed, low-side gate-driver device produced by Texas Instruments. This device is designed to effectively drive MOSFET and IGBT power switches, offering superior performance and reliability. It features a unique design that minimizes shoot-through current and provides rail-to-rail drive capability with extremely small propagation delays, typically 13 ns. The UCC27511DBVR operates over a wide supply voltage range of 4.5 to 18 V and can handle a broad temperature range from -40°C to 140°C, making it suitable for various power management applications, including those involving emerging wide band-gap power-switching devices like GaN power-semiconductor devices.
Key Specifications
| Parameter | Description |
|---|---|
| Package Type | SOT-23-6 |
| Number of Pins | 6 |
| Operating Temperature Range | -40°C to 140°C |
| Supply Voltage Range | 4.5 V to 18 V |
| Peak Source Current | 4 A |
| Peak Sink Current | 8 A |
| Propagation Delay | 13 ns (typical) |
| Rise Time | 9 ns (typical) |
| Fall Time | 7 ns (typical) |
| Input Logic Threshold | TTL and CMOS compatible, independent of VDD supply voltage |
| UVLO (Undervoltage Lockout) | Ensures outputs are held low outside VDD operating range |
Key Features
- Low-cost gate-driver device offering superior replacement of NPN and PNP discrete solutions.
- 4-A peak source and 8-A peak sink asymmetrical drive capability.
- Strong sink current enhances immunity against Miller turn-on effect.
- Split output configuration allows independent adjustment of turn-on and turn-off speeds.
- Fast propagation delays (13 ns typical) and fast rise and fall times (9 ns and 7 ns typical).
- Dual-input design with choice of inverting (IN pin) or noninverting (IN+ pin) configuration.
- Unused input pin can be used for enable or disable function.
- Outputs held low during VDD UVLO for glitch-free operation at power up and power down.
- TTL and CMOS compatible input logic thresholds independent of supply voltage.
- Hysteretic logic thresholds for high noise immunity.
Applications
The UCC27511DBVR is suitable for a variety of applications, including:
- Driving MOSFET and IGBT power switches.
- Emerging wide band-gap power-switching devices such as GaN power-semiconductor devices.
- High-speed power management systems requiring low propagation delays and high peak current drive capabilities.
- Systems that require robust noise immunity and glitch-free operation during power transitions.
Q & A
- What is the operating temperature range of the UCC27511DBVR?
The operating temperature range is -40°C to 140°C.
- What is the supply voltage range for the UCC27511DBVR?
The supply voltage range is 4.5 V to 18 V.
- What are the peak source and sink current capabilities of the UCC27511DBVR?
The device can source up to 4 A and sink up to 8 A.
- What is the typical propagation delay of the UCC27511DBVR?
The typical propagation delay is 13 ns.
- Does the UCC27511DBVR have built-in UVLO protection?
Yes, the device has internal UVLO circuitry that holds the output low outside the VDD operating range.
- Can the UCC27511DBVR be used with both inverting and noninverting input configurations?
Yes, the device features a dual-input design allowing for both inverting and noninverting configurations.
- How does the split output configuration benefit the user?
The split output configuration allows the user to apply independent turn-on and turn-off resistors, enabling easy control of switching slew rates.
- What type of logic thresholds does the UCC27511DBVR use?
The device uses TTL and CMOS compatible input logic thresholds that are independent of the supply voltage.
- How does the UCC27511DBVR handle floating input pins?
The device has internal pull-up and pull-down resistors that ensure outputs are held low when input pins are floating.
- What are some common applications for the UCC27511DBVR?
Common applications include driving MOSFET and IGBT power switches, and emerging wide band-gap power-switching devices like GaN power-semiconductor devices.
