UCC28250 具有预偏置操作的高级 PWM 控制器
|
UCC28250 |
| Control Method |
Current Mode, Voltage Mode |
| Duty Cycle(Max)(%) |
100 |
| Frequency(Max)(kHz) |
1000 |
| UVLO Thresholds On/Off(V) |
4.3/4.1 |
| Pin/Package |
20TSSOP, 20QFN |
| Operating Temperature Range(°C) |
-40 to 125 |
| Rating |
Catalog |
UCC28250 描述
The UCC28250 PWM controller is designed for high power density applications that may have stringent pre-biased startup requirements. The UCC28250’s integrated synchronous rectifier control outputs target high efficiency and high performance topologies such as half-bridge, full-bridge, interleaved forward, and push-pull. The UCC27200 half bridge drivers and UCC2732X MOSFET drivers used in conjunction with the UCC28250 provide a complete power converter solution.
Externally programmable soft-start, used in conjunction with an internal pre-biased startup circuit, allows the controller to gradually reach a steady-state operating point under all output conditions. The UCC28250 can be configured for primary or secondary-side control and either voltage or current mode control can be implemented.
UCC28250 特性
- Pre-biased Startup
- Synchronous Rectifier Control Outputs with Programmable Delays
(Including Zero Delay Support)
- Voltage Mode Control with Input Voltage Feed-Forward or
Current Mode Control
- Primary or Secondary-Side Control
- 3.3-V, 1.5% Accurate Reference Output
- 1-MHz Capable Switching Frequency
- 1% Accurate Cycle-by-Cycle Over Current Protection with
Matched Duty Cycle Outputs
- Programmable Soft-Start and Hiccup Restart Timer
- Thermally Enhanced 4-mm × 4-mm QFN-20 Package and
20-pin TSSOP Package
- APPLICATIONS
- Half-Bridge, Full-Bridge, Interleaved Forward, and
Push-Pull Isolated Converters
- Telecom and Data-com Power
- Wireless Base Station Power
- Server Power
- Industrial Power Systems
UCC28250 芯片订购指南
UCC28250 应用技术支持与电子电路设计开发资源下载
- UCC28250 数据资料 dataSheet 下载.PDF
- TI 德州仪器AC/DC 和 DC/DC 电源产品选型与价格参考 . xls
- Dual MOSFET Driver
(PDF 498 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
- Shelf-Life Evaluation of Lead-Free Component Finishes (PDF
1305 KB)
- Analog-to-Digital Converter Grounding Practices Affect System
Performance (PDF 56 KB)
- Principles of Data Acquisition and Conversion (PDF 50 KB)
- Interleaving Analog-to-Digital Converters (PDF 64 KB)
- What
Designers Should Know About Data Converter Drift (PDF 95 KB)
- Giving Delta-Sigma Converters a Gain Boost with a Front End
Analog Gain Stage (PDF 70 KB)
- Programming Tricks for Higher Conversion Speeds Utilizing Delta
Sigma Converters (PDF 105 KB)
UCC28250 工具与软件