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UCC2897RTJR

产品分类: DC-DC稳压器
厂牌: TEXAS INSTRUMENTS
产品描述: 反激,可提供隔离,正,正激转换器 Yes 250KHz 晶体管驱动器 1 QFN-20 贴片安装
供应商型号: 25E-UCC2897RTJR
供应商: 国内现货
标准整包数: 1
TEXAS INSTRUMENTS DC-DC稳压器 UCC2897RTJR

UCC2897RTJR概述

    # UCC2897 PWM Controller: Technical Overview and Implementation Guide
    Product Introduction
    The UCC2897 is a high-performance pulse width modulation (PWM) controller specifically designed for advanced power conversion topologies, including active clamp/reset forward, flyback, and synchronous rectifier configurations. This versatile controller integrates numerous features to optimize performance in various applications, making it suitable for server power systems, 48V telecom equipment, datacom setups, and 42V automotive applications. Its primary goal is to simplify implementation of complex DC/DC power supply designs while maintaining robust functionality.
    Technical Parameters
    Below are the key technical specifications extracted from the UCC2897's data sheet:
    | Parameter | Value |

    | VDD Operating Voltage Range | 8.5 V to 14.5 V |
    | Typical Operating Current | 2 mA to 3 mA |
    | Soft-Start Charge Current | ±30% of rated value |
    | Soft-Start Discharge Voltage | 0.4 V to 0.6 V |
    | Current Sense Threshold (Cycle-by-Cycle) | 0.43 V to 0.53 V |
    | Current Sense Threshold (Hiccup Mode) | 0.71 V to 0.81 V |
    | Oscillator Frequency | 237 kHz to 270 kHz |
    | High-Side Gate Driver Capability | Sink/Sources up to ±2 A |
    | Input Voltage Range | Up to 120 V |
    | Maximum Duty Cycle | 74% |
    | Switching Frequency Stability | ±5% |
    Product Features and Advantages
    The UCC2897 offers several unique features and benefits:
    1. Dual Gate Driver with Adjustable Dead Time: This ensures proper coordination between the main and auxiliary switches.
    2. Peak Current-Mode Control: Provides precise current regulation with a 0.5-V cycle-by-cycle current limit.
    3. Hiccup Mode Protection: Features dual-level current thresholds for enhanced fault management.
    4. TrueDrive™ Outputs: Capable of sourcing/sinking up to ±2 A for reliable switching.
    5. Advanced Line Monitoring: Accurately tracks input voltage for seamless operation.
    6. Programmable Slope Compensation: Ensures stability in step-up/down applications.
    7. Flexible Synchronization Options: Enables synchronization with external clocks for coordinated multi-stage designs.
    Application Cases and Usage Recommendations
    Typical Applications:
    - Active Clamp Reset Forward Topology: Common in telecom servers and industrial applications.
    - Synchronous Rectifier Designs: Ideal for efficiency-critical automotive and datacom systems.
    - Flyback Converter: Suitable for isolated low-power adapters and converters.
    Recommended Usage Tips:
    - Ensure proper PCB layout for minimizing parasitic inductances and reducing switching losses.
    - Use appropriate timing resistors (RON, ROFF) to meet desired switching frequencies.
    - Implement adequate bypass capacitors at VDD and VREF pins to ensure noise immunity.
    Compatibility and Support
    The UCC2897 supports compatibility with a wide range of electronic components and systems. It comes in two packages: TSSOP-20 and QFN-20, both of which feature Pb-free finishes for RoHS compliance. Texas Instruments provides comprehensive support, including datasheets, application notes, and a dedicated technical support team.
    Common Issues and Solutions
    | Issue | Solution |

    | High switching noise | Optimize PCB layout and add snubbers. |
    | Overcurrent tripping | Verify the current sensing circuit. |
    | Inconsistent output voltage | Check load regulation parameters. |
    | Excessive heating | Improve heat sinking and cooling. |
    Conclusion and Recommendation
    The UCC2897 PWM Controller is a highly efficient and flexible solution for advanced DC/DC power conversion applications. Its in

UCC2897RTJR参数

参数
输出类型 晶体管驱动器
最小输入电压 -
同步整流器 Yes
最大输出电压 -
输出数量 1
开关频率 250KHz
功能 Boost/Buck
最小输出电压 -
拓扑 反激,可提供隔离,正,正激转换器
最大输入电压 -
通用封装 QFN-20
安装方式 贴片安装
零件状态 新设计不推荐

UCC2897RTJR厂商介绍

Texas Instruments(简称TI),是一家总部位于美国德克萨斯州达拉斯的全球性半导体设计与制造公司,成立于1930年。TI是全球领先的模拟技术、数字信号处理和微控制器(MCU)领域的供应商。

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1. 模拟产品:包括电源管理、信号链和接口产品,广泛应用于工业、汽车、医疗等领域。
2. 嵌入式处理:包括微控制器(MCU)、数字信号处理器(DSP)和处理器,广泛应用于消费电子、工业控制、汽车电子等领域。
3. 无线产品:包括无线通信模块和解决方案,应用于物联网、智能城市、智能家居等领域。
4. 计算器:TI也是知名的计算器制造商,拥有多款科学计算器和图形计算器产品。

应用领域:
TI的产品和技术广泛应用于通信、计算机、消费电子、汽车、工业、医疗等多个领域。

优势:
1. 技术创新:TI在模拟、嵌入式处理和无线通信领域拥有强大的研发实力和专利技术。
2. 产品多样性:TI提供广泛的产品线,满足不同客户的需求。
3. 客户支持:TI在全球设有技术支持中心,为客户提供专业的技术支持和解决方案。
4. 供应链管理:TI拥有强大的供应链管理能力,确保产品的稳定供应和交付。

UCC2897RTJR数据手册

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TEXAS INSTRUMENTS DC-DC稳压器 TEXAS INSTRUMENTS UCC2897RTJR UCC2897RTJR数据手册

UCC2897RTJR封装设计

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价格梯度 中国香港交货 内地交货(含增值税)
10+ ¥ 17.4503
5000+ ¥ 16.6692
10000+ ¥ 16.0654
库存: 3118
起订量: 574 增量: 0
交货地:
最小起订量为:10
合计: ¥ 174.5
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