Datasheet > SG3846

SG3846

更新时间： 2024-11-27 14:48:15

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
17页	824K
描述
The SG1846 family of control ICs provides the required features to implement Fixed Frequency, Curr

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

SG3846 数据手册

SG1846/SG2846/SG3846

Current Mode PWM Controller

Features

Description

. Automatic Feed-forward Compensation

. Programmable Pulse by Pulse Current Limiting

The SG1846 family of control ICs provides the required

features to implement Fixed Frequency, Current mode

control schemes while maintaining a minimum external

. Automatic Symmetry Correction in Push-pull

Configuration

parts count.

The advanced performance of this

technique can be measured in improved line regulation,

enhanced load response characteristics, and a simpler,

easier-to-design control loop. Topological advantages

include, inherent pulse-by-pulse current limiting

capability, automatic symmetry correction for push-pull

converters, and the ability to parallel “power modules”

while maintaining equal current sharing.

. Enhanced Load Response Characteristics

. Parallel Operation Capability for Modular Power

Systems

. Differential Current Sense Amplifier with Wide

Common-mode Range

. Double Pulse Suppression

. 200mA Totem-pole Outputs

. ± 1% Bandgap Reference

. Under-voltage Lockout

Protection circuitry includes built-in under-voltage

lockout and programmable current limit in addition to

soft start capability. A shutdown function is also

available which can initiate either a complete shutdown

with automatic restart, or latch the supply off.

. Soft-start and Shutdown Capability

. 500kHz Operation

Other features include fully latched operation, double-

pulse suppression, dead-time adjust capability, and a High Reliability Features

±1% trimmed bandgap reference.

Available To MIL-STD-883 – 883, ¶ 1.2.1

Available to DSCC

– Standard Microcircuit Drawing (SMD)

. SGR1846 Rad-Tolerant Version Available

Block Diagram

5.1 V

REFERENCE

REGULATOR

REF

SYNC

OSC

U.V.LOCKOUT

A OUT

-CURRENT

SENSE

SG1846

Output Stoge

COMP

+CURRENT

SENSE

B OUT

GND

0.5 V

0.5 mA

CURRENT LIMITADJUST

SHUTDOWN

N.I.

INV.

E.A.

350 mV

COMP

Figure 1 · Block Diagram

November 2014 Rev. 1.2

www.microsemi.com

12 3 4 5 6 7...17

中文翻译

下载PDF

与SG3846相关器件

型号	品牌	获取价格	描述	数据表
SG3846DW	MICROSEMI	获取价格	CURRENT MODE PWM CONTROLLER
SG3846J	MICROSEMI	获取价格	CURRENT MODE PWM CONTROLLER
SG3846N	MICROSEMI	获取价格	CURRENT MODE PWM CONTROLLER
SG3846Q	MICROSEMI	获取价格	暂无描述
SG3847J	MICROSEMI	获取价格	Switching Controller, Current-mode, 0.5A, 500kHz Switching Freq-Max, CDIP16
SG3847N	MICROSEMI	获取价格	Switching Controller, Current-mode, 0.5A, 500kHz Switching Freq-Max, PDIP16
SG388/D	ETC	获取价格	AC−DC Controllers and Regulators,ON Semiconductor Master Components Selector Guide
SG-3A03	FUJITSU	获取价格	SOLID STATE RELAY MAXIMUM LOAD CURRENT 3 A
SG-3A03C	FUJITSU	获取价格	SOLID STATE RELAY MAXIMUM LOAD CURRENT 3 A
SG-3A03CL	FUJITSU	获取价格	SOLID STATE RELAY MAXIMUM LOAD CURRENT 3 A