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TL598

更新时间： 2024-11-29 22:42:11
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
10页 156K
描述
PULSE-WIDTH-MODULATION CONTROL CIRCUITS

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TL598 数据手册

 浏览型号TL598的Datasheet PDF文件第2页浏览型号TL598的Datasheet PDF文件第3页浏览型号TL598的Datasheet PDF文件第4页浏览型号TL598的Datasheet PDF文件第5页浏览型号TL598的Datasheet PDF文件第6页浏览型号TL598的Datasheet PDF文件第7页 
TL598  
PULSE-WIDTH-MODULATION CONTROL CIRCUITS  
SLVS053C – FEBRUARY 1988 – REVISED JULY 1999  
D OR N PACKAGE  
(TOP VIEW)  
Complete PWM Power Control Function  
Totem-Pole Outputs for 200-mA Sink or  
Source Current  
ERROR  
AMP 2  
ERROR  
AMP 1  
1IN+  
1IN–  
2IN+  
2IN–  
REF  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
Output Control Selects Parallel or  
Push-Pull Operation  
FEEDBACK  
DTC  
OUTPUT CTRL  
Internal Circuitry Prohibits Double Pulse at  
Either Output  
CT  
V
CC  
RT  
V
C
Variable Dead-Time Provides Control Over  
Total Range  
SIGNAL GND  
OUT1  
POWER GND  
OUT2  
Internal Regulator Provides a Stable 5-V  
Reference Supply, Trimmed to 1%  
Tolerance  
On-Board Output Current-Limiting  
Protection  
Undervoltage Lockout for Low V  
Conditions  
CC  
Separate Power and Signal Grounds  
TL598Q Has Extended Temperature  
Range . . . –40°C to 125°C  
description  
The TL598 incorporates all the functions required in the construction of pulse-width-modulated (PWM)  
controlled systems on a single chip. Designed primarily for power-supply control, the TL598 provides the  
systems engineer with the flexibility to tailor the power-supply control circuits to a specific application.  
The TL598 contains two error amplifiers, an internal oscillator (externally adjustable), a dead-time control (DTC)  
comparator, a pulse-steering flip-flop, a 5-V precision reference, undervoltage lockout control, and output  
control circuits. Two totem-pole outputs provide exceptional rise- and fall-time performance for power FET  
control. The outputs share a common source supply and common power ground terminals, which allow system  
designers to eliminate errors caused by high current-induced voltage drops and common-mode noise.  
The error amplifier has a common-mode voltage range from 0 V to V  
–2 V. The DTC comparator has a fixed  
CC  
offset that prevents overlap of the outputs during push-pull operation. A synchronous multiple supply operation  
can be achieved by connecting RT to the reference output and providing a sawtooth input to CT.  
The TL598 device provides an output control function to select either push-pull or parallel operation. Circuit  
architecture prevents either output from being pulsed twice during push-pull operation. The output frequency  
1
for push-pull applications is one-half the oscillator frequency fO  
1
. For single-ended applications:  
2 RT CT  
fO  
.
RT CT  
The TL598C is characterized for operation from 0°C to 70°C. The TL598Q is characterized for operation from  
–40°C to 125°C.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Copyright 1999, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...10

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