UCC28251是TI公司的一款PWM与谐振控制器产品，UCC28251是具有预偏置操作的高级 PWM 控制器，本页介绍了UCC28251的产品说明、应用、特性等，并给出了与UCC28251相关的TI元器件型号供参考。
UCC28251 - 具有预偏置操作的高级 PWM 控制器 - PWM与谐振控制器 - 离线隔离型DC/DC控制器和转换器 - TI公司（Texas Instruments，德州仪器）
- Prebiased 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
- Lower Minimum Operating 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 x 4-mm VQFN-20 Package and 20-pin TSSOP Package
- 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
The UCC28251 PWM controller is designed for high power density applications that may have stringent prebiased startup requirements. The UCC28251’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 UCC27210 half bridge drivers and UCC2752x MOSFET drivers used in conjunction with the UCC28251 provide a complete power converter solution.
The UCC28251 is a functional variant of the UCC28250 PWM Controller. While the same basic functionality of the UCC28250 is largely maintained, the UCC28251 is designed to enhance performance in both offline, 400-V input DC-to-DC applications and 48-V input full-bridge or half-bridge applications.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| UCC28251 | TSSOP (20) | 6.50 mm × 4.40 mm |
| VQFN (20) | 4.00 mm × 4.00 mm |
