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UCC28950
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UCC28950

  • 所属类别：ACDC-和-DCDC-电源
  • 产品名称：具有同步整流的绿色环保相移全桥控制器
  • 厂商：TI
  • 生产批号：11+
  • 封装：24TSSOP
  • 库存状态：有库存
  • 库存量：50000
  • 最低订购量：1
  • 详细资料：点击查找UCC28950的pdf资料
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  • Product Introduction

The UCC28950 enhanced phase shift controller establishes Texas Instruments' industry-standard UCCx895 phase shift with enhanced functionality, providing the best controller family for classroom efficiency in today's high-performance power systems. Implement advanced UCC28950 with synchronous rectification of the output stage to actively control the entire bridge.

The ZVS programmable delay allowed by the primary side signal ensures operation over a wide range of load currents and input voltages, while the load current naturally regulates the switching delay of the secondary side synchronous rectifier, maximizing the efficiency of the entire system.

The UCC28950 also offers a variety of features, including on/off control burst mode and dynamic simple transition in and out continuous current mode (DCM) operation, ensuring zero voltage of operation extended to lighter load light load management.

characteristic
 
  • Enhanced wide-range resonant zero-voltage switching (ZVS) capability
  • Control of direct synchronous rectification (SR).
  • Light load efficiency management, including:
    • Burst mode operation
    • Discontinuous conductive mode (DCM), dynamic simple on/off control
      With programmable thresholds
    • Programmable adaptive delay
  • Average or peak current mode control with programmable slope compensation
    and voltage mode control
  • Closed-loop soft-start and enable functions
  • Programmable switching frequency up to 1 MHz bidirectional synchronization
  • (+/-3%), hiccup mode support for cycle-by-cycle current limit protection
  • 150μA start-up current
  • V DD for undervoltage locking
  • Wide temperature range -40°C to 125°C
  • apply
    • Phase-shifting full-bridge converter
    • Servers, telecom power supplies
    • Industrial powertrains
    • High-density power architecture
    • Solar inverters, electric vehicles
parameter
  UCC28950
topology Full bridge
Control method Current mode
Duty Cycle (Max) (%) 97
Frequency (max) (kHz) 1000
On/off of undervoltage lockout threshold (5) 6.75min/6.15min
Pin/Pack 24TSSOP
(#) Regulated output One
Operating Temperature Range (°C) -40 to 125

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