UCC2893 电流模式有源钳位 PWM 控制器

描述

UCC2891 /2/3/4系列PWM控制器旨在简化各种有源钳位/复位开关电源拓扑的实现。

UCC289x是一款峰值电流模式，固定频率，高性能脉冲宽度调制器。它包括辅助开关的逻辑和驱动能力，采用简单的方法对关键延迟进行编程，以实现正确的有源钳位操作。

UCC2891 /3包含一个110 V启动稳压器，用于初始启动

其他功能包括内部可编程斜率补偿电路，精确的D _MAX限制，以及单个电阻可编程同步振荡器，并提供保持有效功能。。精确的线路监控功能还可根据批量输入电压对转换器的ON和OFF转换进行编程。与UCC2897一起，该UCC289x系列允许电源设计人员消除许多外部元件，从而减小设计的尺寸和复杂性。

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Topology
Control Method
Vin (Min) (V)
Vin (Max) (V)
Frequency (Max) (kHz)
UVLO Thresholds On/Off (V)
Duty Cycle (Max) (%)
Gate Drive (Typ) (A)
Features
Rating
Operating Temperature Range (C)
Pin/Package

UCC2893	UCC2891	UCC2892	UCC2894
Active-Clamp Forward Flyback Forward	Active-Clamp Forward Flyback Forward	Active-Clamp Forward Flyback Forward	Active-Clamp Forward Flyback Forward
Current	Current	Current	Current
18	18	8.5	8.5
110	110	16	16
1000	1000	1000	1000
13.0/8.0	13.0/8.0	13.0/8.0	13.0/8.0
100	100	100	100
2.5	2.5	2.5	2.5
HV Start-up Input Line Monitor Multi-topology Programmable Slope Compensation Soft Start Soft Switching	HV Start-up Input Line Monitor Multi-topology Programmable Slope Compensation Soft Start Soft Switching	Input Line Monitor Multi-topology Programmable Slope Compensation Soft Start Soft Switching	Input Line Monitor Multi-topology Programmable Slope Compensation Soft Start Soft Switching
Catalog	Catalog	Catalog	Catalog
-40 to 105 -40 to 85	-40 to 85	-40 to 105 -40 to 85	-40 to 85
16SOIC 16TSSOP	16SOIC 16TSSOP	16SOIC 16TSSOP	16SOIC 16TSSOP

数据手册（1）

元器件购买 UCC2893 相关库存