Motor de Búsqueda de Datasheet de Componentes Electrónicos
Selected language     Spanish  ▼

Delete All
ON OFF
ALLDATASHEET.ES

X  

Preview PDF Download HTML

TPS61085 Datasheet(PDF) 13 Page - Texas Instruments

Click here to check the latest version.
No. de Pieza. TPS61085
Descripción  650-kHz,1.2-MHz, 18.5-V Step-Up DC-DC Converter
Descarga  30 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Fabricante  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo 

TPS61085 Datasheet(HTML) 13 Page - Texas Instruments

Zoom Inzoom in Zoom Outzoom out
 13 / 30 page
background image
S
IN
OUT
C
S
S
OUT
V
V
I
V
V
f
C
-
D
=
×
×
_
(
)
_
D
=
×
C ESR
L peak
C ESR
V
I
R
TPS61085
www.ti.com
SLVS859B – JUNE 2008 – REVISED DECEMBER 2014
Table 5 gives conservative RCOMP and CCOMP values for certain inductors, input and output voltages providing a
very stable system. For a faster response time, a higher RCOMP value can be used to enlarge the bandwidth, as
well as a slightly lower value of CCOMP to keep enough phase margin. These adjustments should be performed in
parallel with the load transient response monitoring of TPS61087.
9.2.2.6 Input Capacitor Selection
For good input voltage filtering low ESR ceramic capacitors are recommended. TPS61085 has an analog input
IN. Therefore, a 1
μF bypass is highly recommended as close as possible to the IC from IN to GND.
One 10
μF ceramic input capacitors are sufficient for most of the applications. For better input voltage filtering
this value can be increased. Refer to Table 6 and typical applications for input capacitor recommendations.
9.2.2.7 Output Capacitor Selection
For best output voltage filtering a low ESR output capacitor like ceramic capcaitor is recommended. Two 10
μF
ceramic output capacitors (or one 22
μF) work for most of the applications. Higher capacitor values can be used
to improve the load transient response. Refer to Table 6 for the selection of the output capacitor.
Table 6. Rectifier Input and Output Capacitor Selection
CAPACITOR
VOLTAGE RATING
SUPPLIER
COMPONENT CODE
CIN
10
μF/1206
16 V
Taiyo Yuden
EMK212 BJ 106KG
IN bypass
1
μF/0603
16 V
Taiyo Yuden
EMK107 BJ 105KA
COUT
10
μF/1206
25 V
Taiyo Yuden
TMK316 BJ 106KL
To calculate the output voltage ripple, Equation 10 can be used:
(10)
with
ΔVC
Output voltage ripple dependent on output capacitance,output current and switching frequency
VS
Output voltage
VIN
Minimum input voltage of boost converter
fS
Converter switching frequency (typically 1.2 MHz or 650 kHz)
Iout
Output capacitance
ΔVC_ESR
Output voltage ripple due to output capacitors ESR (equivalent series resistance)
ISWPEAK
Inductor peak switch current in the application
RC_ESR
Output capacitors equivalent series resistance (ESR)
ΔVC_ESR can be neglected in many cases since ceramic capacitors provide low ESR.
Copyright © 2008–2014, Texas Instruments Incorporated
Submit Documentation Feedback
13
Product Folder Links: TPS61085


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 


Datasheet Download




Enlace URL




Privacy Policy
ALLDATASHEET.ES
Does ALLDATASHEET help your business so far?  [ DONATE ]  

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Favorito   |   Intercambio de Enlaces   |   Lista de Fabricantes
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