Overview
The UCC27282DRCT from Texas Instruments is a robust 3-A, 120-V half-bridge gate driver designed to drive two N-channel MOSFETs in high-side and low-side configurations. This device is suitable for synchronous buck or half-bridge topologies. It features a maximum switch node (HS) voltage rating of 100 V and can operate with both analog and digital controllers due to its input independence from the supply voltage. The UCC27282DRCT includes several key features such as input interlock, enable and disable functionality, and under voltage lockout (UVLO) to enhance system robustness and reliability. The integrated bootstrap diode eliminates the need for an external discrete diode, saving board space and reducing system cost. This device is available in small packages, enabling high-density designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Output Current | ±3 A | A |
| Maximum Boot Voltage | 120 V | V |
| Absolute Maximum Negative Voltage Handling on Inputs | –5 V | V |
| Absolute Maximum Negative Voltage Handling on HS | –14 V | V |
| UVLO Threshold (VDD Rising) | 4.7 to 5.4 V | V |
| UVLO Threshold (VDD Falling) | 4.2 to 4.9 V | V |
| Junction Temperature Range | –40°C to 140°C | °C |
| Package Types | SON10, SOIC8, SON8 | - |
Key Features
- High Current Capability: ±3-A peak source and sink current to drive large power MOSFETs with minimal switching losses.
- Input Interlock: Prevents cross-conduction between the high-side and low-side MOSFETs, enhancing system reliability.
- Enable and Disable Functionality: Reduces power consumption and responds to fault events within the system.
- Under Voltage Lockout (UVLO): Ensures the outputs are low if the VDD voltage is below the specified threshold, improving system efficiency.
- Integrated Bootstrap Diode: Eliminates the need for an external discrete diode, saving board space and reducing system cost.
- Low Current Consumption: 7-µA consumption when disabled, contributing to overall system efficiency.
- Robust Voltage Handling: Input pins and HS pin can tolerate significant negative voltage, improving system robustness.
- Small Propagation Delay and Delay Matching: Minimizes dead-time requirements, further improving system efficiency.
Applications
- Synchronous Buck Converters: Ideal for driving MOSFETs in synchronous buck configurations.
- Half-Bridge Configurations: Suitable for applications requiring half-bridge topologies.
- High-Frequency Applications: Operates efficiently at lower bias voltages, necessary in many high-frequency applications.
- Power Supplies: Used in various power supply designs where high reliability and efficiency are crucial.
- Motor Control and Inverters: Applicable in motor control and inverter systems due to its robust and reliable operation.
Q & A
- What is the peak output current of the UCC27282DRCT?
The peak output current is ±3 A.
- What is the maximum boot voltage for the UCC27282DRCT?
The maximum boot voltage is 120 V.
- What is the junction temperature range for the UCC27282DRCT?
The junction temperature range is –40°C to 140°C.
- Does the UCC27282DRCT have an integrated bootstrap diode?
Yes, it has an integrated bootstrap diode.
- What is the purpose of the input interlock feature in the UCC27282DRCT?
The input interlock prevents cross-conduction between the high-side and low-side MOSFETs, enhancing system reliability.
- How does the enable and disable functionality benefit the system?
The enable and disable functionality reduces power consumption and responds to fault events within the system.
- What is the UVLO threshold for the VDD rising in the UCC27282DRCT?
The UVLO threshold for VDD rising is between 4.7 V and 5.4 V.
- Can the UCC27282DRCT operate with both analog and digital controllers?
Yes, it can operate with both analog and digital controllers due to its input independence from the supply voltage.
- What are the benefits of the small propagation delay and delay matching in the UCC27282DRCT?
The small propagation delay and delay matching minimize the dead-time requirements, further improving system efficiency.
- What are some common applications of the UCC27282DRCT?
Common applications include synchronous buck converters, half-bridge configurations, high-frequency applications, power supplies, and motor control and inverter systems.
