数据搜索系统，热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

预览 PDF HTML

TPS53353 数据表(PDF) 22 Page - Texas Instruments

部件名 TPS53353
功能描述  TPS53353 High-Efficiency 20-A Synchronous Buck Converter With Eco-mode?
PDF  37 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

TPS53353 数据表(HTML) 22 Page - Texas Instruments

Back Button TPS53353_15 Datasheet HTML 18Page - Texas Instruments TPS53353_15 Datasheet HTML 19Page - Texas Instruments TPS53353_15 Datasheet HTML 20Page - Texas Instruments TPS53353_15 Datasheet HTML 21Page - Texas Instruments TPS53353_15 Datasheet HTML 22Page - Texas Instruments TPS53353_15 Datasheet HTML 23Page - Texas Instruments TPS53353_15 Datasheet HTML 24Page - Texas Instruments TPS53353_15 Datasheet HTML 25Page - Texas Instruments TPS53353_15 Datasheet HTML 26Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 22 / 37 page
background image
(
)
(
)
æ
ö
-
´
æ
ö
-
´
´
´
W
ç
÷
ç
÷
ç
÷
´ ´
è
ø
è
ø
W =
m
IN
OUT
OUT
OCP
DS(on)
SW
IN
TRIP
TRIP
V
V
V
1
I
32 R
m
2 L f
V
R
(k )
I
( A)
(
) ´
-
-
=
´
IND ripple
OUT
I
ESR
V
0.6
2
R1
R2
0.6
(
)
( )
´
´
-
´ ´
´
=
=
=
W
´
OUT
SW
SW
IND ripple
V
10mV (1 D)
10mV L f
L f
ESR
0.6 V I
0.6 V
60
TPS53353
SLUSAK2B – AUGUST 2011 – REVISED FEBRUARY 2015
www.ti.com
4. CHOOSE THE OUTPUT CAPACITORS
When organic semiconductor capacitors or specialty polymer capacitors are used, for loop stability,
capacitance and ESR should satisfy Equation 6. For jitter performance, Equation 10 is a good starting point
to determine ESR.
where
•
D is the duty factor.
•
The required output ripple slope is approximately 10 mV per tSW (switching period) in terms of VFB terminal
voltage.
(10)
5. DETERMINE THE VALUE OF R1 AND R2
The output voltage is programmed by the voltage-divider resistor, R1 and R2 shown in Figure 37. R1 is
connected between VFB pin and the output, and R2 is connected between the VFB pin and GND.
Recommended R2 value is from 1 k
Ω to 20 kΩ. Determine R1 using Equation 11.
(11)
6. CHOOSE THE OVERCURRENT SETTING RESISTOR
The overcurrent setting resistor, RTRIP, can be determined by .
where
•
ITRIP is the TRIP pin sourcing current (10 µA).
•
RDS(on) is the thermally compensated on-time resistance value of the low-side MOSFET.
(12)
Use an RDS(on) value of 1.6 mΩ for an overcurrent level of approximately 20 A. Use an RDS(on) value of
1.7 m
Ω for overcurrent level of approximately 10 A.
8.2.1.3 Application Curves
Figure 39. Enable Turnon
Figure 40. Enable Turnoff
22
Submit Documentation Feedback
Copyright © 2011–2015, Texas Instruments Incorporated
Product Folder Links: TPS53353



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37


数据表 下载

Go To PDF Page


链接网址



ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   数据表链接    |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com