1000 Threads found on edaboard.com: Boost Converter Equations
Thank you for the answer.
I don't use any output filter in order to keep bandwidth capability of the boost converter, tha's why I need to optimize the output ripple according to L & C values.
Power Electronics :: 02-08-2010 04:10 :: jayce3390 :: Replies: 4 :: Views: 3099
look that equations and calculate it. and also basic power electronics books and internet would help.
Power Electronics :: 07-28-2009 02:27 :: qolpa :: Replies: 1 :: Views: 2110
Seems that the inductor of the boost circit is going into saturation.
Added after 5 minutes:
Power Electronics :: 10-02-2009 00:22 :: pauloynski :: Replies: 4 :: Views: 2114
Some theory and a calculator..............
boost converter - Wikipedia, the free encyclopedia
BASIC SWITCHING REGULATORs : LT1070 Design Manual
Power Electronics :: 01-22-2012 05:42 :: kak111 :: Replies: 4 :: Views: 623
I'm trying to step-up a dc voltage from 12V to 340V dc using a 3-stage boost converter. Does anyone know where I can get the analysis/ equations for calculating circuit values of a MULTI-STAGE boost converter? Are the equations different from that of a single-stage (...)
Hobby Circuits and Small Projects Problems :: 04-12-2004 09:54 :: ee01akk :: Replies: 0 :: Views: 1065
How can I obtain a transfer function from a state space representation when this representation is non-linear.
I'm trying to obtain the transfer function of a boost converter. I've obtained the state space equations using inductor current and output voltage as my two state variables under the two different switching conditions. (One in (...)
Robotics and Automatics Forum :: 11-03-2004 13:12 :: usernam :: Replies: 2 :: Views: 2186
can anyone provide me the equations for boost converter?The equations for finding out L,C?
Thanks a lot....
Analog IC Design and Layout :: 03-15-2010 04:29 :: bharatsmile2007 :: Replies: 3 :: Views: 1411
i am studying the paper titled-
"Electromagnetic Energy Harvesting Circuit With Feedforward and Feedback DC?DC PWM boost converter for Vibration Power Generator System"
(Xinping Cao, Wen-Jen Chiang, Ya-Chin King, Member, IEEE, and Yi-Kuen Lee, Member, IEEE)
I cannot get the derivation of the equation3 and 4 (page 681). Can anyo
Power Electronics :: 01-11-2011 07:56 :: pankaj jha :: Replies: 5 :: Views: 2135
i am doing a project of boost converter using zero voltage switching (ZVS), the overall schematic shown in figure below. am using timer 555 to generate PWM to trigger the mosfet, the frequency about 600hz, Vin = 12v, Vo=47.5v, duty cycle = 58%, so my problem is how to calculate the resonant components (L2,C5) to achieve the soft switching. i need
Software Problems, Hints and Reviews :: 02-01-2012 01:25 :: dark night :: Replies: 0 :: Views: 775
Hi - I'm trying to analyze a synchronous DCDC boost converter in order to better stabilize it. I'm trying to figure out where the poles are from the LC filter in the output. I understand that it is not exactly a normal LC filter as the L is switched on and off from the output. I found
Analog Circuit Design :: 09-18-2012 01:45 :: uoficowboy :: Replies: 7 :: Views: 664
i do my project as design of DC-DC boost converter . In that, how to calculate the L and C.. if it has any equation means send to me quick.
Analog Circuit Design :: 09-27-2012 01:04 :: deepamary :: Replies: 3 :: Views: 395
In this boost converter , when i increase the load resistance to very high value ,it acts as a boost converter. Otherwise it wont.
Can anyone tell what is the effect of load resistance on this circuit ..??
What will happen to the output , when i increase/decrease the value of L or/and
Analog IC Design and Layout :: 03-26-2014 14:00 :: vigneshwaranvenkat :: Replies: 3 :: Views: 371
Hello guys i have a question for you.... how can i calculate the correct power dissipation of the IGBT switch in a boost converter (consider Vin max 40V e Imax 6A) ? Is right considering it about the same as the Pout? Please help me :| thank you
Power Electronics :: 10-10-2014 14:53 :: badboy85 :: Replies: 3 :: Views: 359
I think i have a small understand ??
when you say boost converter you mean to dc-dc converter supplier?
when you say Piezo cap you mean to audio buzzer?
If you are looking for design a dc-dc converter:
you have few comp that make them:
Professional Hardware and Electronics Design :: 09-23-2002 09:03 :: gabby :: Replies: 3 :: Views: 1495
Try to go to:
And similar websites, they all makes boost coverters.
Analog Circuit Design :: 09-10-2004 17:37 :: ME :: Replies: 7 :: Views: 1965
I need to control the output of a boost converter and make it equal to a given reference voltage. But I need to control my inductor current as well and make that equal to a given reference current as well. My input voltage is variable and so is my inductor current reference. However my output voltage has to remain constant.
I need some tut
Electronic Elementary Questions :: 10-13-2004 01:05 :: usernam :: Replies: 2 :: Views: 1604
I am going to build a boost converter soon, just using the standard topology.
however the last thing remaining to be determined is the inductor size.
i can run the thing at anywhere between audio frequency and 100+ kHz, whatever works out best... but I don't know what inductor value to use. As far as I know, bigger is generally better, so
Hobby Circuits and Small Projects Problems :: 04-01-2005 12:55 :: evandude :: Replies: 2 :: Views: 1060
how to measure efficiency of boost converter ?
as I know, efficiency= (Vo*Io)/(Vi*Ii),
but should I use rms value, or average value of Vo, Io, Vi, Ii ?
and what is the value readout from the meter ? rms or average ?
Analog Circuit Design :: 05-30-2005 06:59 :: Btrend :: Replies: 24 :: Views: 4846
If you go for constant current boost converter, such as Badboy, you will need to connect ≈10 parallel circuits cosisting of 3 diodes connected in series.
The total current will be 10 *30mA = 300mA (Badboy specification) and the voltage accross the dides will adjust itself (current control), and no additional resistors are required ..
Hobby Circuits and Small Projects Problems :: 08-02-2005 22:39 :: IanP :: Replies: 5 :: Views: 1438
I have a some questions.
Normal boost converter chip has no VOUT Pin. (schottky type)
Mosfet gate driving voltage 25V
How can i make a gate driver power supply?
boost converter chip has no information about VOUT.
Is it possible HIGH (...)
Analog IC Design and Layout :: 11-08-2005 21:20 :: Y.C Park :: Replies: 4 :: Views: 1305
Can anyone suggest simple and good readings for current mode control in a boost converter ? thank you
Analog Circuit Design :: 12-15-2005 16:35 :: mengghee :: Replies: 9 :: Views: 3144
When i was simulating the boost converter,i found the power dissipation on the switch mosfet sometimes was bigger than the power source,and sometimes approximated to the power of power source,then the total power dissipation in the converter components was bigger than the power supply ,so where does this power come from? Is my simulation (...)
Analog Circuit Design :: 12-15-2005 22:08 :: collin :: Replies: 3 :: Views: 870
I think your quenstion are too wide to be answered.
if you build it with the control chip, you can choose some datasheets to complete.
There are many companies have the chip,such as the Linear Technology Corporation ( ),Maxim( )
TI and so on.
But if you want to built it by yourself.
Analog Circuit Design :: 01-06-2006 06:31 :: jluhzw :: Replies: 8 :: Views: 3284
I have been browsing for boost converter control scheme and i have noticed that there are many implementation using pi controller. can anybody tell me the importance of a pi controller in boost converter control scheme ? thank you very much
Analog Circuit Design :: 01-05-2006 23:55 :: mengghee :: Replies: 0 :: Views: 2310
I am just wondering why is there an overshoot with my output voltage of my boost converter when my capacitor is smaller. and also, if i increase the size of the capacitor, the overshoot will reduce but my simulation time for it to reach steady state will be longer. why is that ? thank you
Analog Circuit Design :: 01-23-2006 13:58 :: mengghee :: Replies: 1 :: Views: 1551
You do need a error amplifier in the boost converter. It may have two non-inverting input terminals if you want soft-start function for the converter.
Analog Circuit Design :: 02-11-2006 03:29 :: Hughes :: Replies: 14 :: Views: 14256
I have build a boost converter from 10 to 20V and my load is 40Ohm resistor. which i assume a load current of 500mA. but when run it. the readings on the input power supplies says that the whole circuit is taking around 1.5A or 2A. can anybody tell me why is that ? and is it normal ? does that mean that the components rating fo
Analog Circuit Design :: 02-14-2006 16:45 :: mengghee :: Replies: 1 :: Views: 1462
Anyone has the note for designing the controller of buck-boost converter? Pls share. Thanks.
Electronic Elementary Questions :: 02-23-2006 09:55 :: powersys :: Replies: 5 :: Views: 8773
In the theoretical design of the boost converter, if i am not wrong, changing the load current wouldn't affect the output voltage. but in practical design, it does ... can anybody tell me what causes the variation of output voltage ? thank you.
Analog Circuit Design :: 03-01-2006 18:19 :: mengghee :: Replies: 5 :: Views: 2248
can anyone tell me how i can implement a feedback loop of a boost converter without worrying too much about stability or control system aspects ? I have tried many ways ( using different configuration of op amp ) to try to design the feedback loop but to no avail. as this is my final year project, i once consulted my lecturer a
Analog Circuit Design :: 03-05-2006 12:32 :: mengghee :: Replies: 3 :: Views: 3314
recently, i have build a boost converter and when i start up the boost converter, more often than not, the power supply that supplies the boost converter overload. can anybody tell me why that happens and is there anyway i can prevent that from happening ? such as (...)
Analog Circuit Design :: 03-14-2006 12:49 :: mengghee :: Replies: 3 :: Views: 842
You can consult the following link:
it is a full document about boost converter and analyze losses for several devices at two levels.
Analog Circuit Design :: 03-21-2006 17:09 :: Miguel Gaspar :: Replies: 2 :: Views: 3249
The output ripple seems to be triangular, as expected, but with impulse noise present.
This noise should be removed because it will cause trouble everywhere in the circuits that are powered by the boost.
This probably comes from the turn-on/turn-off of the transistor, a snubber could be of some use.
Analog Circuit Design :: 03-26-2006 09:53 :: cyberblak :: Replies: 7 :: Views: 4847
boost converter consist of a switch, an inductor, and a diode....wat is the purpose of the diode and the inductor?
Analog Circuit Design :: 04-01-2006 04:48 :: cutiegal :: Replies: 2 :: Views: 1551
Hello, everybody.I want to know more the mirco-power boost converter.
What is the multi-input multi-output converter topologyies?I want to know that.Thanks your help.
Analog Circuit Design :: 05-02-2006 23:39 :: nicklin101 :: Replies: 0 :: Views: 452
How to simulation the phase margin of boost converter??
Is there any book to tell us how to do it!!
Analog IC Design and Layout :: 05-14-2006 02:55 :: pswatw :: Replies: 2 :: Views: 1256
One of options is to build a boost converter based on the LM3478 and an external N-channel power MOSFET .. see picture below ..
More details on this IC can be found at:
Analog Circuit Design :: 06-17-2006 20:16 :: IanP :: Replies: 3 :: Views: 1996
I'm looking to use an atmel attiny uC to make a simple yet efficient (85%) and SMALL buck/boost converter.
boost from around 1.8V and buck from 6-9V to drive a luxeon led. I need a schematic to get started and i'll figure out the writing of the code. Please help! Thanks!
Analog Circuit Design :: 07-08-2006 06:40 :: GoldServe :: Replies: 0 :: Views: 1443
i want to design a boost converter(PFC) and am in need of the design procedure... how to choose the values for inductor n capacitor and wot are the assumption made to design this converter. i have also attached my paper regarding boost converter
pls give me a example in wat ever rating you could do
Analog Circuit Design :: 08-25-2006 06:42 :: sherinebernard :: Replies: 0 :: Views: 1023
i want to design a boost converter(PFC) and am in need of the design procedure... how to choose the values for inductor n capacitor and wot are the assumption made to design this converter. i have also attached my paper regarding boost converter.pls send this reply to my mail id firstname.lastname@example.org (...)
Analog Circuit Design :: 08-25-2006 06:45 :: sherinebernard :: Replies: 1 :: Views: 1302
i have a GPS circuit working in 3.3 V, i need battery back up for this circuit atleast with 1 hour.I tried with 3.7V,500mA Lit-ion battery with LTC3441.But the circuit is not satisfactory.
Do anyone have a buck-boost converter circuit which works in the range of 3.7V to 0.5V and the output as constant 3.3V, 500mA.
Thanks in ad
Professional Hardware and Electronics Design :: 09-03-2006 10:13 :: jayamohan :: Replies: 0 :: Views: 1371
I'm working on 12V->24V boost converter 36W max. I choose CC mode and current mode controller (UC3843).
I have problems / questions about the feedback loop:
Is current mode a good choice if the output current is not constant and changing from 10% to 80% of the maximum current ?
The shunt resistance in the transistor's source is set
Analog Circuit Design :: 09-27-2006 07:50 :: Lecroy2607 :: Replies: 3 :: Views: 2185
Hi friends ;
I need to a 3v to 12v dc boost converter circuit, if anybody has some idea about this issue , please help me...
Analog Circuit Design :: 12-17-2006 15:16 :: mkilicaslan :: Replies: 6 :: Views: 1472
I'm simulating a boost converter in DCM.
The inductor current is supposed to decrease until zero
during the switch is OFF.
However, from my simulation results, the inductor current
drops to -ve values. Why come?? How to solve such problem??
L = 400uH
C = 100nF
R = 3.3k
SW is large enough.
Any comment is highly appreciate
ASIC Design Methodologies and Tools (Digital) :: 12-24-2006 22:51 :: Willt :: Replies: 0 :: Views: 818
hi this nagendra, i want PSPICE programme for buck-boost converter.
plz give me program details,
Electronic Elementary Questions :: 02-19-2007 11:31 :: cvnr23 :: Replies: 0 :: Views: 1160
hi to all,
wt is reason for the output voltage of boost converter is allways negative,
thanks in advance
The output of boost converter is not negative. The input and output of boost converter have the same polarity.
It is Buck-boost that has inverted (...)
Electronic Elementary Questions :: 02-19-2007 21:32 :: abel51 :: Replies: 1 :: Views: 911
Switch-Mode Power Supply Spice Cookbook covers it and includes a pspice model - it is included in smpsrecipes.lib and you can see the example netlist in for voltage mode.
I don't use pspice so I don't know if there are symbols made - if not, it's easy to make them.
Analog Circuit Design :: 03-22-2007 19:07 :: electronrancher :: Replies: 3 :: Views: 1309
how to create a subcircuit of averaged switch model which consist of E value and G value in Pspice? then, how to place in boost converter to replace diode and transistor and simulate using pspice??
Analog Circuit Design :: 03-28-2007 11:31 :: vivian248 :: Replies: 4 :: Views: 1144
anyone know how to built simulink averaged model for boost converter??
Electronic Elementary Questions :: 04-12-2007 20:38 :: vivian248 :: Replies: 1 :: Views: 1115
I designed a VOLTAGE-MODE boost converter, it has current limit (1.5A) function. The principium of my current limit function is when the IL reache 1.5A
,The IC will turn the NMOS OFF and PMOS ON.
But, when i test the boost IC . It doesn't work correctly. When the IL reach the current 1.5A it will be limit in 1.5A for (...)
Analog IC Design and Layout :: 05-05-2007 08:58 :: pswatw :: Replies: 1 :: Views: 1728