Datasheet > LM2720

LM2720

更新时间： 2024-10-26 22:51:55

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
8页	153K
描述
5-Bit Programmable, High Frequency Multi-phase 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

LM2720 数据手册

February 2000

LM2720

5-Bit Programmable, High Frequency Multi-phase PWM

Controller

The LM2720 also provides input under-voltage lock-out with

hysteresis, input over-current protection and output voltage

power good detection.

General Description

The LM2720 provides an attractive solution for power sup-

plies of high power microprocessors exhibiting ultra fast load

transients. Compared to a conventional single-phase supply,

an LM2720 based multi-phase supply distributes the thermal

Features

n Ultra fast load transient response

n Enables all surface-mount-design

and electrical loading among components in multiple phases

and greatly reduces the corresponding stress in each com-

ponent. The LM2720 can be programmed to control either a

3-phase converter or a 4-phase converter. Phase shift

among the phases is 120˚ in the case of three phase and 90˚

with four-phase. Because the power channels are out of

phase, there can be significant ripple cancellation for both

the input and output current, resulting in reduced input and

output capacitor size. Due to the nominal operating fre-

quency of 2 MHz per phase, the size of the output inductors

can be greatly reduced which results in a much faster load

transient response and a dramatically shrunk output capaci-

tor bank. Microprocessor power supplies with all surface

mount components can be easily built.

n Selectable 2, 3, 4 phase operation

n Clock frequency from 40 kHz to 10 MHz

n Precision load current sharing

n 5-bit programmable from 3.5V to 1.3V

n VID code compatible to VRM 8.X specification

n Output voltage is 2.0V for VID code 11111

n Selectable internal or external clock

n Digital 16-step soft start

n Input under-voltage lock-out, over-current protection

n Open-drain power good signal output

The internal high speed transconductance amplifier guaran-

tees good dynamic performance.

Applications

n Servers and workstations

The internal master clock frequency of up to 8 MHz is set by

an external reference resistor. An external clock of 10 MHz

can also be used to drive the chip to achieve frequency con-

trol and multi-chip operation.

n High current, ultra-fast transient microprocessors

Pin Configuration

24-Pin Plastic SOIC

DS101322-1

Top View

See NS Package Number M24B

DS101322

www.national.com

12 3 4 5 6 7 8

中文翻译

下载PDF

与LM2720相关器件

型号	品牌	获取价格	描述	数据表
LM2720_09	NSC	获取价格	5-Bit Programmable, High Frequency Multi-phase PWM Controller
LM2720M	NSC	获取价格	5-Bit Programmable, High Frequency Multi-phase PWM Controller
LM2720M/NOPB	TI	获取价格	SWITCHING CONTROLLER, 8700kHz SWITCHING FREQ-MAX, PDSO24, PLASTIC, SOIC-24
LM27212	NSC	获取价格	Two-Phase Current-Mode Hysteretic Buck Controller
LM27212MTD	NSC	获取价格	Two-Phase Current-Mode Hysteretic Buck Controller
LM27212MTDX	NSC	获取价格	Two-Phase Current-Mode Hysteretic Buck Controller
LM27212SQ	NSC	获取价格	Two-Phase Current-Mode Hysteretic Buck Controller
LM27212SQX	NSC	获取价格	Two-Phase Current-Mode Hysteretic Buck Controller
LM27213	NSC	获取价格	Single Phase Hysteretic Buck Controller
LM27213	TI	获取价格	LM27213 Single Phase Hysteretic Buck Controller

与LM2720相关文章

三星深化印度制造布局，供应链本地化进程加速
2024-10-29

10
芯擎科技“星辰一号”自动驾驶芯片点亮成功，2025年量产在即
2024-10-29

10
纳微科技震撼发布GaNSlim革新氮化镓功率芯片
2024-10-18

37
意法半导体发布第四代SiC技术，助力电动汽车电驱
2024-10-15

45

产品中心

服务支持

精选活动

关于我们

帮助中心

LM2720

LM2720 数据手册

与LM2720相关器件

与LM2720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

LM2720

LM2720 数据手册

与LM2720相关器件

与LM2720相关文章

您还可以找

您在本页遇到什么问题？