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UCC2540

不推荐用于新设计

高效次级侧同步降压 PWM 控制器

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数据表

UCC2540

不推荐用于新设计
数据表 立即订购

产品详情

Rating Catalog Topology Buck Control mode Voltage Features Error amplifier, Soft start, Synchronization pin Operating temperature range (°C) -40 to 85
Rating Catalog Topology Buck Control mode Voltage Features Error amplifier, Soft start, Synchronization pin Operating temperature range (°C) -40 to 85
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • On-Chip Predictive Gate Drive™ for High-Efficiency Synchronous Buck Operation
  • Dual ±3-A TrueDrive™ Outputs
  • 1-MHz High Frequency Operation with 70-ns Delay from SYNCIN to G1 Output
  • Leading Edge Modulation
  • Overcurrent Protection using a Parallel Average Current Mode Control Loop
  • 3 Modes to Support 2.7-V to 35-V Bias Operation
  • Reverse Current Protection for Output Stage
  • User Programmable Shutdown
  • ±1.0% Initial Tolerance Bandgap Reference
  • High Bandwidth Error Amplifiers
  • Thermally Enhanced HTSSOP 20-Pin PowerPAD™ Package
  • APPLICATIONS
    • Secondary-Side Post Regulation (SSPR) for Multiple Output Power Supplies
    • Cascaded Buck Converters
    • Post Processing Converters for Bus Converter and DC Transformer Architectures

Predictive Gate Drive, TrueDrive, and PowerPAD are a trademarks of Texas Instruments Incorporated.
  • On-Chip Predictive Gate Drive™ for High-Efficiency Synchronous Buck Operation
  • Dual ±3-A TrueDrive™ Outputs
  • 1-MHz High Frequency Operation with 70-ns Delay from SYNCIN to G1 Output
  • Leading Edge Modulation
  • Overcurrent Protection using a Parallel Average Current Mode Control Loop
  • 3 Modes to Support 2.7-V to 35-V Bias Operation
  • Reverse Current Protection for Output Stage
  • User Programmable Shutdown
  • ±1.0% Initial Tolerance Bandgap Reference
  • High Bandwidth Error Amplifiers
  • Thermally Enhanced HTSSOP 20-Pin PowerPAD™ Package
  • APPLICATIONS
    • Secondary-Side Post Regulation (SSPR) for Multiple Output Power Supplies
    • Cascaded Buck Converters
    • Post Processing Converters for Bus Converter and DC Transformer Architectures

Predictive Gate Drive, TrueDrive, and PowerPAD are a trademarks of Texas Instruments Incorporated.

The UCC2540 is a secondary-side synchronous buck PWM controller for high current and low output voltage applications. It can be used either as the local secondary-side controller for isolated dc-dc converters using two-stage cascaded topologies or as a secondary-side post regulator (SSPR) for multiple output power supplies.

The UCC2540 runs with the synchronization signal from either the primary side or the high duty cycle quasi-dc output of bus converters or dc transformers. For higher efficiency, it also incorporates the Predictive Gate Drive™ technology that virtually eliminates body diode conduction losses in synchronous rectifiers.

The UCC2540 is available in the extended temperature range of –40°C to 105°C and is offered in thermally enhanced PowerPAD™ 20-pin HTSSOP (PWP) package. This space saving package with standard 20-pin TSSOP footprint has a drastically lower thermal resistance of 1.4°C/W øJC to accommodate the dual high-current drivers on board.

The UCC2540 is a secondary-side synchronous buck PWM controller for high current and low output voltage applications. It can be used either as the local secondary-side controller for isolated dc-dc converters using two-stage cascaded topologies or as a secondary-side post regulator (SSPR) for multiple output power supplies.

The UCC2540 runs with the synchronization signal from either the primary side or the high duty cycle quasi-dc output of bus converters or dc transformers. For higher efficiency, it also incorporates the Predictive Gate Drive™ technology that virtually eliminates body diode conduction losses in synchronous rectifiers.

The UCC2540 is available in the extended temperature range of –40°C to 105°C and is offered in thermally enhanced PowerPAD™ 20-pin HTSSOP (PWP) package. This space saving package with standard 20-pin TSSOP footprint has a drastically lower thermal resistance of 1.4°C/W øJC to accommodate the dual high-current drivers on board.
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类型 标题 下载最新的英语版本 日期
* 数据表 High-Efficiency Secondary Side Synchronous PWM Controller 数据表 (Rev. C) 2008年 10月 10日

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点