Overview
The UCC27282DR is a robust N-channel MOSFET driver designed by Texas Instruments. This device is capable of driving two N-channel MOSFETs in high-side and low-side configurations, making it suitable for half-bridge or synchronous buck topologies. The UCC27282DR features a maximum switch node (HS) voltage rating of 100 V and can handle peak output currents of up to 3 A. It is designed to minimize switching losses and can operate with both analog and digital controllers due to its input independence from the supply voltage. The device includes several protective features such as input interlock, enable/disable functionality, and under voltage lockout (UVLO), which enhance system robustness and reliability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (D) | - |
| Pins | 8 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Supply Voltage (VDD) | -0.3 to 20 | V |
| Input Voltages (VEN, VHI, VLI) | -5 to 20 | V |
| Peak Output Current | ±3 A | - |
| Propagation Delay (Typical) | 16 ns | - |
| Rise Time (Typical) | 12 ns | - |
| Fall Time (Typical) | 10 ns | - |
| Delay Matching (Typical) | 1 ns | - |
| UVLO Threshold (VDD Rising) | 4.7 to 5.4 | V |
| UVLO Threshold (VDD Falling) | 4.2 to 4.9 | V |
| Bootstrap Voltage (Maximum) | 120 V | - |
| Current Consumption (Disabled) | 7 µA | - |
Key Features
- Drives two N-channel MOSFETs in high-side and low-side configuration
- 5-V typical under voltage lockout (UVLO)
- Input interlock to prevent cross conduction
- Enable/disable functionality for system flexibility and power reduction
- 16-ns typical propagation delay and 1-ns typical delay matching
- 12-ns rise and 10-ns fall time with 1.8-nF load
- ±3-A peak output current
- Absolute maximum boot voltage of 120 V
- Low current consumption of 7 µA when disabled
- Integrated bootstrap diode to eliminate the need for an external diode
- Robustness against significant negative voltage on inputs and HS pin
Applications
The UCC27282DR is suitable for various high-power applications, including:
- Synchronous buck converters
- Half-bridge configurations
- High-frequency power supplies
- Motor control systems
- Power factor correction (PFC) circuits
- DC-DC converters requiring high efficiency and reliability
Q & A
- What is the maximum switch node voltage rating of the UCC27282DR?
The maximum switch node (HS) voltage rating is 100 V.
- What is the peak output current of the UCC27282DR?
The peak output current is ±3 A.
- What is the typical under voltage lockout (UVLO) threshold for the UCC27282DR?
The typical UVLO threshold is 5 V.
- Does the UCC27282DR have input interlock functionality?
Yes, it has input interlock to prevent cross conduction and improve system robustness.
- What is the propagation delay of the UCC27282DR?
The typical propagation delay is 16 ns.
- Can the UCC27282DR operate with both analog and digital controllers?
Yes, the inputs are independent of the supply voltage, allowing it to work with both analog and digital controllers.
- What is the maximum bootstrap voltage for the UCC27282DR?
The maximum bootstrap voltage is 120 V.
- How much current does the UCC27282DR consume when disabled?
The current consumption when disabled is 7 µA.
- Does the UCC27282DR have an integrated bootstrap diode?
Yes, it has an integrated bootstrap diode to eliminate the need for an external discrete diode.
- What are the typical rise and fall times of the UCC27282DR with a 1.8-nF load?
The typical rise time is 12 ns and the typical fall time is 10 ns with a 1.8-nF load.
