LM5025

更新时间： 2024-11-22 22:47:03

品牌	Logo	应用领域
美国国家半导体 - NSC		控制器
页数	文件大小	规格书
16页	315K
描述
Active Clamp Voltage Mode PWM Controller

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LM5025 数据手册

March 2004

LM5025

Active Clamp Voltage Mode PWM Controller

General Description

Features

n Internal Start-up Bias Regulator

n 3A Compound Main Gate Driver

The LM5025 PWM controller contains all of the features

necessary to implement power converters utilizing the Active

Clamp / Reset technique. The device can be configured to

control either a P-Channel clamp switch or an N-Channel

clamp switch. With the active clamp technique, higher effi-

ciencies and greater power densities can be realized com-

pared to conventional catch winding or RDC clamp / reset

techniques. Two control outputs are provided, the main

power switch control (OUT_A) and the active clamp switch

control (OUT_B). The active clamp output can be configured

for either a guaranteed overlap time (for P-Channel switch

applications) or a guaranteed deadtime (for N_Channel ap-

plications). The two internal compound gate drivers parallel

both MOS and Bipolar devices, providing superior gate drive

characteristics. This controller is designed for high-speed

operation including an oscillator frequency range up to 1MHz

and total PWM and current sense propagation delays less

than 100ns. The LM5025 includes a high-voltage start-up

regulator that operates over a wide input range of 13V to

90V. Additional features include: Line Under Voltage Lockout

(UVLO), softstart, oscillator UP/DOWN sync capability, pre-

cision reference and thermal shutdown.

n Programmable Line Under-Voltage Lockout (UVLO) with

Adjustable Hysteresis

n Voltage Mode Control with Feed-Forward

n Adjustable Dual Mode Over-Current Protection

n Programmable Overlap or Deadtime between the Main

and Active Clamp Outputs

n Volt x Second Clamp

n Programmable Soft-start

n Leading Edge Blanking

n Single Resistor Programmable Oscillator

n Oscillator UP / DOWN Sync Capability

n Precision 5V Reference

n Thermal Shutdown

Packages

n TSSOP-16

n LLP-16 (5x5 mm) Thermally Enhanced

Typical Application Circuit

20086901

Simplified Active Clamp Forward Power Converter

DS200869

www.national.com

12 3 4 5 6 7...16

中文翻译

下载PDF

与LM5025相关器件

型号	品牌	获取价格	描述	数据表
LM5025A	NSC	获取价格	Active Clamp Voltage Mode PWM Controller
LM5025A	TI	获取价格	具有 P 或 N 沟道钳位 FET 和 0.5V CS 阈值的 90V 有源钳位电压模式
LM5025AMTC	NSC	获取价格	Active Clamp Voltage Mode PWM Controller
LM5025AMTC/NOPB	ROCHESTER	获取价格	3 A SWITCHING CONTROLLER, 650 kHz SWITCHING FREQ-MAX, PDSO16, TSSOP-16
LM5025AMTC/NOPB	TI	获取价格	具有 P 或 N 沟道钳位 FET 和 0.5V CS 阈值的 90V 有源钳位电压模式
LM5025AMTCX	NSC	获取价格	Active Clamp Voltage Mode PWM Controller
LM5025AMTCX/NOPB	NSC	获取价格	IC 3 A SWITCHING CONTROLLER, 650 kHz SWITCHING FREQ-MAX, PDSO16, TSSOP-16, Switching Regul
LM5025AMTCX/NOPB	TI	获取价格	具有 P 或 N 沟道钳位 FET 和 0.5V CS 阈值的 90V 有源钳位电压模式
LM5025ASD	NSC	获取价格	Active Clamp Voltage Mode PWM Controller
LM5025ASD/NOPB	TI	获取价格	具有 P 或 N 沟道钳位 FET 和 0.5V CS 阈值的 90V 有源钳位电压模式

与LM5025相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

35
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

26
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

54
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

52

产品中心

服务支持

精选活动

关于我们

帮助中心

LM5025

LM5025 数据手册

与LM5025相关器件

与LM5025相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LM5025

LM5025 数据手册

与LM5025相关器件

与LM5025相关文章

您还可以找

您在本页遇到什么问题？