LM5115MM

更新时间： 2024-11-15 22:34:19

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器控制器
页数	文件大小	规格书
17页	723K
描述
Secondary Side Post Regulator Controller

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LM5115MM 数据手册

PRELIMINARY

March 2005

LM5115

Secondary Side Post Regulator Controller

General Description

Features

n Self-synchronization to main channel output

n Free-run mode for buck regulation of DC input

The LM5115 controller contains all of the features necessary

to implement multiple output power converters utilizing the

Secondary Side Post Regulation (SSPR) technique. The

SSPR technique develops a highly efficient and well regu-

lated auxiliary output from the secondary side switching

waveform of an isolated power converter. Regulation of the

auxiliary output voltage is achieved by leading edge pulse

width modulation (PWM) of the main channel duty cycle.

Leading edge modulation is compatible with either current

mode or voltage mode control of the main output. The

LM5115 drives external high side and low side NMOS power

switches configured as a synchronous buck regulator. A

current sense amplifier provides overload protection and

operates over a wide common mode input range. Additional

features include a low dropout (LDO) bias regulator, error

amplifier, precision reference, adaptive dead time control of

the gate signals and thermal shutdown.

Leading edge pulse width modulation

n Voltage-mode control with current injection and input line

feed-forward

n Operates from AC or DC input up to 75V

Wide 4.5V to 30V bias supply range

Wide 0.75V to 12V output range.

n Top and bottom gate drivers sink 2.5A peak

Adaptive gate driver dead-time control

Wide bandwidth error amplifier (4MHz)

Programmable soft-start

n Thermal shutdown protection

n TSSOP-16 or thermally enhanced LLP-16 packages

Typical Application Circuit

20134901

FIGURE 1. Simplified Multiple Output Power Converter Utilizing SSPR Technique

DS201349

www.national.com

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与LM5115MM相关器件

型号	品牌	获取价格	描述	数据表
LM5115MMX	NSC	获取价格	Secondary Side Post Regulator Controller
LM5115MTC	TI	获取价格	LM5115 Secondary Side Post Regulator / Synchronous Buck Controller
LM5115MTC/NOPB	NSC	获取价格	IC SWITCHING CONTROLLER, PDSO16, ROHS COMPLIANT, TSSOP-16, Switching Regulator or Controll
LM5115MTC/NOPB	TI	获取价格	75V、次级侧后置稳压器/同步降压控制器 \| PW \| 16 \| -40 to 125
LM5115MTCX	TI	获取价格	LM5115 Secondary Side Post Regulator / Synchronous Buck Controller
LM5115MTCX/NOPB	NSC	获取价格	IC SWITCHING CONTROLLER, PDSO16, ROHS COMPLIANT, TSSOP-16, Switching Regulator or Controll
LM5115MTCX/NOPB	TI	获取价格	75V、次级侧后置稳压器/同步降压控制器 \| PW \| 16 \| -40 to 125
LM5115SD	TI	获取价格	LM5115 Secondary Side Post Regulator / Synchronous Buck Controller
LM5115SD	NSC	获取价格	Secondary Side Post Regulator Controller
LM5115SD/NOPB	TI	获取价格	75V, Secondary Side Post Regulator/ Synchronous Buck Controller 16-WSON