L5993

更新时间： 2024-11-11 22:31:47

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		功率控制控制器
页数	文件大小	规格书
22页	201K
描述
CONSTANT POWER CONTROLLER

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中文翻译

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数据手册

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L5993 数据手册

L5993

CONSTANT POWER CONTROLLER

CURRENT-MODE CONTROL PWM

SWITCHING FREQUENCY UP TO 1MHz

MULTIPOWER BCD TECHNOLOGY

LOW START-UP CURRENT (< 120 A)

CONSTANT OUTPUT POWER VS. SWITCH-

ING FREQUENCY

HIGH-CURRENT OUTPUT DRIVE SUITABLE

FOR POWER MOSFET (1A)

FULLY LATCHED PWM LOGIC WITH DOU-

BLE PULSE SUPPRESSION

DIP16

SO16N

PROGRAMMABLE DUTY CYCLE

100%AND 50%MAXIMUMDUTY CYCLELIMIT

ORDERING NUMBERS: L5993 (DIP16)

L5993D (SO16)

PROGRAMMABLE SOFT START

PRIMARY OVERCURRENT FAULT DETEC-

TION WITH RE-START DELAY

PWM UVLO WITH HYSTERESIS

IN/OUT SYNCHRONIZATION

LATCHED DISABLE

INTERNAL 100ns LEADING EDGE BLANK-

ING OF CURRENT SENSE

PACKAGE:DIP16 AND SO16N

line or DC-DC power supply applications using a

fixed frequencycurrent mode control.

Based on a standard current mode PWM control-

ler this device includes some features such as

programmable soft start, IN/OUT synchronization,

disable (to be used for over voltage protection and

for power management), precise maximum Duty

Cycle Control, 100ns leading edge blanking on

current sense, pulse by pulse current limit, over-

current protection with soft start intervention and

”constant power” function for cotrolling throughput

power in multisync monitor SMPS.

DESCRIPTION

This primary controller I.C., developed in BCD60II

technology, has been designed to implement off

BLOCK DIAGRAM

V_CC

SYNC

DC-LIM

VREF

RCT

TIMING

25V

Vref

15V/10V

PWM UVLO

DIS

V_C

2.5V

13V

C-POWER

OUT

BLANKING

PWM

OVER CURRENT

VREF OK

CLK

DIS

PGND

VFB

FAULT

SOFT-START

ISEN

1.2V

E/A

2.5V

D97IN765

SGND

COMP

1/22

July 1999

12 3 4 5 6 7...22

中文翻译

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