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TPS40200-Q1_16

更新时间： 2024-11-25 02:58:15
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德州仪器 - TI /
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41页 616K
描述
Wide-Input-Range Nonsynchronous Voltage-Mode Controller

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TPS40200-Q1_16 数据手册

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TPS40200-Q1  
www.ti.com  
SLUS739D –SEPTEMBER 2006–REVISED JULY 2011  
WIDE-INPUT-RANGE NONSYNCHRONOUS VOLTAGE-MODE CONTROLLER  
Check for Samples: TPS40200-Q1  
1
FEATURES  
DESCRIPTION  
The TPS40200 is  
•
•
•
•
•
•
•
Qualified for Automotive Applications  
Input Voltage Range 4.5 V to 52 V  
Output Voltage (700 mV to 90% VIN)  
200-mA Internal P-FET Driver  
a
flexible nonsynchronous  
controller with a built-in 200-mA driver for P-channel  
FETs. The circuit operates with inputs up to 52 V,  
with a power-saving feature that turns off driver  
current once the external FET has been fully turned  
on. This feature extends the flexibility of the device,  
allowing it to operate with an input voltage up to 52 V  
without dissipating excessive power. The circuit  
operates with voltage-mode feedback and has  
Voltage Feed-Forward Compensation  
Undervoltage Lockout (UVLO)  
Programmable Fixed-Frequency  
(35-kHz to 500-kHz) Operation  
feed-forward  
input-voltage  
compensation  
that  
•
•
•
•
•
•
Programmable Short-Circuit Protection  
Hiccup Overcurrent Fault Recovery  
Programmable Closed Loop Soft Start  
700-mV 1% Reference Voltage  
External Synchronization  
responds instantly to input voltage change. The  
integral 700-mV reference is trimmed to 2%,  
providing the means to accurately control low  
voltages. The TPS40200 is available in an 8-pin  
SOIC and supports many of the features of more  
complex controllers. Clock frequency, soft start, and  
overcurrent limit are each easily programmed by a  
single, external component. The part has  
undervoltage lockout (UVLO) and can be easily  
synchronized to other controllers or a system clock to  
Small 8-Pin SOIC (D) Package  
APPLICATIONS  
•
•
•
•
•
Automotive Controls  
Distributed Power Systems  
DSL/Cable Modems  
Scanners  
satisfy  
sequencing  
and/or  
noise-reduction  
requirements.  
Major sections in this data sheet include:  
•
•
•
•
Specifications  
Telecom  
General Information  
Example Applications  
Design References  
TYPICAL APPLICATION  
VIN  
100  
90  
80  
70  
60  
50  
R5  
VIN = 8 V  
VIN = 12 V  
VIN = 16 V  
C1  
C3  
TPS40200  
1
2
3
4
RC  
VDD  
8
7
6
5
RSENSE  
C4  
SS  
ISNS  
C5  
R3  
COMP GDRV  
Q1 L1  
VOUT  
FB  
GND  
C2  
D1  
R4  
C6  
R1  
R2  
VOUT = 5 V  
0
0.5  
1
1.5  
2
2.5  
3
Load Current - A  
Figure 1. 12-V to 5-V Buck Converter  
With 94% Efficiency  
Figure 2. Typical Efficiency of Application Circuit 1  
(Described in Application 1)  
1
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.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2006–2011, Texas Instruments Incorporated  
1234567...41

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