UCC28950 具有同步整流的绿色环保相移全桥控制器
|
UCC28950 |
| Topology |
Full-Bridge |
| Control Method |
Current Mode |
| Duty Cycle(Max)(%) |
97 |
| Frequency(Max)(kHz) |
1000 |
| UVLO Thresholds On/Off(V) |
6.75min/6.15min |
| Pin/Package |
24TSSOP |
| Regulated Outputs(#) |
1 |
| Operating Temperature Range(°C) |
-40 to 125 |
| Rating |
Catalog |
UCC28950 描述
The UCC28950 enhanced phase-shifted controller builds upon Texas Instrument’s industry standard UCCx895 phase-shifted controller family with enhancements that offer best in class efficiency in today’s high performance power systems. The UCC28950 implements advanced control of the full-bridge along with active control of the synchronous rectifier output stage.
The primary-side signals allow programmable delays to ensure ZVS operation over wide-load current and input voltage range, while the load current naturally tunes the secondary-side synchronous rectifiers switching delays, maximizing overall system efficiency.
The UCC28950 also offers multiple light-load management features including burst mode and dynamic SR on/off control when transitioning in and out of Discontinuous Current Mode (DCM) operation, ensuring ZVS operation is extended down to much lighter loads.
UCC28950 特性
- Enhanced Wide Range Resonant Zero Voltage Switching (ZVS) Capability
- Direct Synchronous Rectifier (SR) Control
- Light-Load Efficiency Management Including
- Burst Mode Operation
- Discontinuous Conduction Mode (DCM), Dynamic SR On/Off Control with Programmable Threshold
- Programmable Adaptive Delay
- Average or Peak Current Mode Control with Programmable Slope Compensation and Voltage Mode Control
- Closed Loop Soft Start and Enable Function
- Programmable Switching Frequency up to 1 MHz with Bi-Directional Synchronization
- (+/-3%) Cycle-by-Cycle Current Limit Protection with Hiccup Mode Support
- 150-uA Start-Up Current
- VDD Under Voltage Lockout
- Wide Temperature Range -40°C to 125°C
- APPLICATIONS
- Phase-Shifted Full-Bridge Converters
- Server, Telecom Power Supplies
- Industrial Power Systems
- High-Density Power Architectures
- Solar Inverters, and Electric Vehicles
UCC28950 芯片订购指南
| 器件 |
状态 |
温度 (oC) |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| UCC28950PW |
ACTIVE |
-40 to 125 |
4.70 | 1ku |
TSSOP (PW) | 24 |
60 | TUBE |
UCC28950 |
| UCC28950PWR |
ACTIVE |
-40 to 125 |
4.25 | 1ku |
TSSOP (PW) | 24 |
2000 | LARGE T&R |
UCC28950 |
UCC28950 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| UCC28950PW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
UCC28950PW |
| UCC28950PWR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
UCC28950PWR |
UCC28950 应用技术支持与电子电路设计开发资源下载
- UCC28950 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
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- Programming Tricks for Higher Conversion Speeds Utilizing Delta
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UCC28950 工具与软件