TI Green Phase-Shifted Full-Bridge Controller_ UCC28950
【產品特性】The UCC28950 enhanced phase-shifted controller offer best in class efficiency and high performance power systems.
1. Enhanced Wide Range Resonant Zero Voltage Switching (ZVS) Capability
2. Direct Synchronous Rectifier (SR) Control
3. Light-Load Efficiency Management Including: Burst Mode Operation/ Discontinuous Conduction Mode (DCM), Dynamic SR On/Off Control with Programmable Threshold/ Programmable Adaptive Delay
4. Average or Peak Current Mode Control with Programmable Slope Compensation and Voltage Mode Control
5. Naturally Handles Pre-Biased Start Up with DCM Mode
6. Programmable Switching Frequency up to 1MHz with Bi-Directional Synchronization
7. (+/-3%) Cycle-by-Cycle Current Limit Protection with Hiccup Mode Support
8. 150-μA Start-Up Current
9. VDD Under Voltage Lockout
10. Wide Temperature Range -40°C to 125°C
11. TSSOP-24 pin packag
【產品應用】 Phase-Shifted Full-Bridge Converters
Server, Power Supplies
Datacom, Telecom, and Wireless Base-Station Power
Industrial Power Systems
High-Density Power Architectures
Solar Inverters, and Electric Vehicles
【文字介紹】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.
In addition, the UCC28950 includes support for peak current along with voltage mode control, programmable switching frequency up to 1 MHz and a wide set of protection features including cycle-by-cycle current limit, UVLO and thermal shutdown. A 90-degree phase-shifted interleaved synchronized operation can be easily
arranged between two converters.