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：

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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UCC28950

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