UCC3895 BiCMOS 高级相移 PWM 控制器

描述

UCC3895是一个相移PWM控制器，通过相移一个半桥的开关来实现全桥功率级的控制。另一个。该器件允许恒定频率脉冲宽度调制和谐振零电压开关，以在高频率下提供高效率。该器件既可用作电压模式，也可用作电流模式控制器。

虽然UCC3895保持了UC3875 /6/7/8系列和UC3879的功能，但它还增加了该控制器系列的功能。增强控制逻辑，自适应延迟设置和关闭功能等功能。由于该器件采用BCDMOS工艺制造，因此其工作电源电流远低于双极性器件。 UCC3895的最大时钟频率为1 MHz。


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

UCC3895	LM5046	UCC2895	UCC28950
Phase-Shifted Full-Bridge	Phase-Shifted Full-Bridge	Phase-Shifted Full-Bridge	Phase-Shifted Full-Bridge
Current Feedforward Voltage	Current Voltage	Current Feedforward Voltage	Current Voltage
11	14	11	7.3
17	105	17	20
1000	2000	1000	1000
11/9	Programmable/1.25V	11/9	7.3/6.75
100	50	100	95
0.1	1.5 2	0.1	0.2
Adjustable Switching Frequency Current Limiting Error Amplifier Multi-topology Soft Start Soft Switching Synchronization Pin	Adjustable Switching Frequency Current Limiting Error Amplifier HV Start-up Soft Start Soft Switching	Adjustable Switching Frequency Current Limiting Error Amplifier Multi-topology Soft Start Soft Switching Synchronization Pin	Adjustable Switching Frequency Current Limiting Error Amplifier Light Load Efficiency Multi-topology Soft Start Soft Switching Synchronization Pin
Catalog	Catalog	Catalog	Catalog
0 to 70	-40 to 125	-40 to 85	-40 to 125
20PDIP 20SOIC 20TSSOP	28HTSSOP 28WQFN	20PDIP 20SOIC 20TSSOP	24TSSOP

数据手册（1）

元器件购买 UCC3895 相关库存