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# Boost And Converter

578 Threads found on edaboard.com: Boost And Converter

## Step up or step down converter

Hello I am designing a battery operated circuit and it consists of one pic 18f25k20 chip and an oled display. Here is my question, The mcu is preferably works at 1.8v for power saving, and oled runs at 3.3v I made a quick search on the net, it seems not possible to make oled run under 3.3v because of internal boost pump (...)

## Boost converter not boosting

I have designed the boost converter and simulated using multisim. In real-time, boost converter not boosting the voltage instead the voltage was decreasing. Input voltage from solar panel (50W) Vmp=17.6, Imp=2.86. Required output voltage =24V, L(Toroidal)=375?H, C=470?F, (...)

## Buck boost converter (how to determine values, specs)

But i want output current was 50A. That's a huge current, maybe you want 50mA ?? There are many buck/boost converters (linear and switching regulator) which you can find on

## Calculation PID for Boost Converter

Hi, What is the good of for boost converter PID or PI for closed loop? I want the value of PID or PI im using Matlab Simulink How can Calculate PID value like Ki, Kp, Kd? if the input Vmin= 30 Dc Vout= 116 Dc if i want constant for 120 DC what is the Ki= Kp= Kd= Revrnce block=

## output of PV should be constant

Hi, Everyone I want to do a project for solar panle. The idea how can keep the output of PV constant by using boost converter for Dc Application. Can anyone plz help me and give some advice? Thank you.

## Boost Converter : earth ground problem

Hi, I'm using a boost converter, at a 15kHz Switching frequency. I'm using a coupled inductor with a value of 2X1600uH. I'm using a IGBT module where i am switching the bottom IGBT and the top IGBT is used as diode ( the reverse protection Diode ) The problem is that i'm having oscilations in the current during the switches. I attached (...)

## Buck Boost Converter Design Help needed

Hi This project is a different project and not related to my other projects and hence I have started a new thread. This is about Buck-boost converter. I need to get 325.0V DC from 150V to 300V AC. Attached is the circuit. The DC-DC converter Inductor and Capacitor values are not (...)

## drive 5v and 24v dc motor using IR2110

It see this options: - use a buck-boost converter to generate 12 - 15V for the IR2110 independent of supply voltage - use a low-voltage halfbridge driver like FAN7080 - use any other driver circuit (e.g. discrete transistors) that can work with lower supply voltage Please observe that a low voltage driver must use logic level FETs.

## Who can recommned a step-up DC/DC to replace LTC3810?

Hi, All, I read carefully about the datasheet of LTC3810, it is a step-down DC/DC converter. But someone said it has boost function, who can confirm it has step-up DC/DC or not? and who can recommend me a step-up DC/DC conventer to replace LTC3810? Industial, is preferred. Attachment is the LTC3810 datasheet. Thanks. Tony Liu

## BLDC motor controller

i need two levels of voltage to be fed to the motor. i.e, 90V and 230V. Why, particularly? Usually motor voltage is varied continuously by means of pulse width modulation. why cant we directly give the boost converter output to inverter. You can, if no isolation is required and the voltage level is appropriate fo

## Micro watt range boost converter design

Your most crucial problem is that 100mV will not turn on any "regular VT" device, and any "native" (VT ~ 0) device will not turn off full (so very wasteful of input power). To run a decent boost backend you would need to ring up a supply nearly as large as what you hope to create, just for gate drive. That alone will probably consume all or most

## Help with selecting output capacitor for boost regulator.

All, How's everyone doing? I hope everyone is doing well. I need some help with the method/formula for selecting an out capacitor for my boost regulator. Any help is greatly appreciated. In the manual for the LT3795 everything has a description with formulas for selecting all the components, except for the output capacitor. I'm getting

## How does thsi circuit work?

It's a boost converter. The two transistors are arranged to increase gain (similar to a darlington or sziklai pair). The capacitor charge and discharges, causing voltage variations at the left-hand transistor. It creates hysteretic action turning the right hand transistor On and Off. The (...)

## Single stage (PFC) boost converter

Using a boost stage to get UPF in your transformer can give you a reasonably flat and stable output, just need to use good size electro's on the output, using a separate boost choke is a good idea as it reduces losses in the Tx, stick to 20-35kHz, you'll be fine... UC3854 is an old chip but works well - easy to set up...

## Why boost converter not showing any results?

- using high side instead of low side driver channel without a said by FVM......the OP needs to look up boost converters...here is a basic sim of a boost converter so op can get into it....basically - - - Updated - - - here is it in ltspice which is free download...just change to .

## SC4501 boost converter shorting out

Hi! I'm currently working on a circuit that has a SC4501 boost converter IC on PCB. I was testing the PCB yesterday and I shorted the input of the IC. It then started to draw more current as if it was shorted out. I tested what was wrong and it seems that the VCC pin has fried. The input voltage at the time of testing (...)

## Active and passive PFC circuit

It certainly DOESN'T mean boost converter! Perhaps searching with it's full name will help, "Power Factor Correction", there is a good guide on Wikipedia. Brian.

## Reason of fluctuation in the dc-dc boost converter load transient

in the low power boost converter I am changing the load from 40mA to 60mA , fluctuation becomes different for each different feedback resistances. what is reason behind this ? thanks

## 3.7v/2100mah Li-Ion Battery Charger and 5V/4A Load sharing system controller IC

Hi All I'm looking to design a circuit that can be either wall input 5v/4A or battery powered (3.7v/4A). When plugged into a 5v wall input it should charge the battery as well as run the device from the plugged-in source. When unplugged the 3.7v battery combined with boost converter should step-up the voltage to 5v/4A. I have found some (...)

## Solar System with Buck Converter Doubt

You have some boundary conditions - panel bus voltage max and min, MPP current, battery charger input voltage and so on. These would say whether a buck will do or whether some corner might need boost capability. This all has to do with the components at hand. I'm sure you can find SPICE subcircuits or even a (...)

## mosfet driver for boost converter

Hello, i need to know how to use irf2104 mosfet driver as low side mosfet driver as in case of 'boost converter ' and how to operate this driver . does it need external supply to be connected to 'Vcc' ? and the value of 'Vcc' needed to operate this driver.

## mosfet driver for boost converter

Hello, i need to know how to use irf2104 mosfet driver as low side mosfet driver as in case of 'boost converter ' and how to operate this driver . does it need external supply to be connected to 'Vcc' ? and the value of 'Vcc' needed to operate this driver.

## Control the input voltage of a unidirectional boost converter

Hi all, I have a boost converter of a PV system. The output voltage of the boost converter is regulated by another element (storage) at some value. The boost converter controller is supposed to control the input voltage at some value in order to extract the max. power from the PV. (...)

## Mt3608 v/s mcp1640 Better Step Up Converter

Hello Guys, I have been working on a boost converter to convert 3.7V to 5V supply. I have been using a MCP1640 for the same. But recently I came across a new chip from Aerosemi (maybe that is not new, but I came across it recently). It is MT3608. The datasheet is not that great and does not claim a tested product. The advantage of this (...)

## RadioShack 13.8v/3A power supply transistor ID/replacement.

Caution: That's a boost converter, although it might work, you really want a regulator to drop the voltage from the transformer. You would have to keep the transformer, rectifiers and reservoir capacitor so you have a DC voltage ahead of the regulator but typically it would be around 18V, dropping to about 14V under full load. The original (...)

## SMPS for higher rating.

Special dedicated single phase mains input like for electric shower...then three paralleled boost ccm pfc stages, using maybe one of the fairchild triple pfc controllers, then a full bridge LLC converter with good fan cooling and big heatsinking. or if you are really flashy, do software controlled boost pfc (...)

## can i use single buck-boost converter to power on two devices?

im using TPS63000 buck-boost converter because of low power characteristics. i want to enable two different module and can i supply directly to the modules from TPS63000? single Vout from TPS63000 goes to module A and module B? current is not a problem at all since TPS63000 current can go up to 1200mA. can it be done? if (...)

## boost power factor correction

hi, i am new to the design pfc, please suggest how to design a boost and buck converter pfc using LT1248 and LT1249 chip. I am presently using LT spice.

## Keep High side N MOS Always ON

Isolated DC/DC converter can be used. Or simple boost converter to charge the gate.

## How to calculate power losses of a boost converter in an easy way.

I know some power losses in a boost converter; conductance losses, switching losses, inductance losses and others. Is there any easy and quick way to calculate these losses from hspice simulation results? What are the most suitable equations for calculating these losses? Thnx.

## Why boost converter inductor current and output capacitor current are different

I designed a boost converter in DCM with 90nm CMOS technology. My output should be 3.5V and input is connected to a capacitor through a switch. When cap reaches 1.8V, switch is on and the converter connects to the cap. Once the cap downs to 1V, switch is off. Simulations are carried out in hspice. First (...)

## Details of Super Capacitor

Some design parameters are missing (input and output voltage, cycles per hour/day/whatsoever for the lifetime calculation. Or do you mean 12 cycles/hour for 24 h/365 days? In most supercap backup applications, you'll want constant output voltage. This can be best achieved with a buck, boost or buck-boost converter (...)

## [Moved] Driver for casceded buck+boost dc dc converter

Right i see your problem, when you want to work in pure boost operation, you have to hold the upper side switch on continuously. and of course, bootstrap high side drivers, as well as transformer isolated drivers, cannot normally do that. Of course, you can cheat and get boosting operation by using it as a (...)

## Non Isolated Buck Converter Vin_min=48V and Dual Output Vout=+/-12V

A buck-boost inverts supply polarity. Output is referenced to ground. That will give you -12V. You can use an ordinary buck converter to get +12V. Then you'll have bipolar +-12V, both referenced to common 0V ground.

## Which converter has better EMI behaviour???

An interleaved boost and a phase shifted semi-bridgeless boost converter can be used as a single phase PFC rectifier .Both are ideally suited for upto 3.3kW application...If we compare both of them Interleaved boost converter is less efficient because of the presence of the input (...)

## how to use hcpl 2130 as high side driver

when I am using the HCPL3120 for driving the high side (cascaded BUCk+boost converter for high voltage around 600V) FET, there is dip in the gate drive supply voltage and negative current flowing through to gate drive supply during the switching period. please someone help me, thank you127638

## 2kW battery charger topology

I thought each panel would be only low power, and that you would just have a separate current regulated boost converter coming off each panel and pouring its current into the battery. Or are you saying that there is an inverter already attached to the panels giving a 230vac output? Because it seems a waste to have to go (...)

## 600W BLDC speed controlled by current output regulated buck-bost converter.

Is this a feasible way to control a BLDC pump??, ie by having ?Buck-boost SMPS? -> ?3 PHASE INVERTER? -> ?BLDC? (the buck-boost SMPS is output current regulated, and the current is regulated to that level which makes the BLDC speed go to the desired speed). So, we wish to supply a 600W BLDC with a buck-boost (...)

## Buck boost converter proteus design

HI TO ALL.I am trying to make buck boost converter in proteus 8.I have tried but it is not working.If i change duty cycle thier is no change in output what so ever.PLz help me.HERE is the circuit diagram. 126164.

## 2.5 kW Full bridge boost converter

woops, just seen your title says 2500W. OK, I reckon you would be better off using a simple boost converter to boost from 42V to 200V, say, then do an LLC to go from 200V to 500V...otherwise there is loads of current in your primary and its difficult to wind,,unless you have foil winding.....I reckon i'd do 200-500vdc as (...)

## UART ttl signal level shifter with 2.7V supply voltage and low power MCU

Hi, There are a lot of step up / boost DCDC converter chips that run with 2.7V or less. Also there are capacitive voltage doubler / voltage inverter circuits. Like MAX1044.. If you have access to the other side of the RS232 (PC), then you maybe can use those (control line) levels to generate the RS232 supply voltage. But this is a low cost solu

## Circuit with PV, protection of the parts.

there is needed some rail for the input of the boost converter after the PV device, and also at the output of the boost converter. I don't see a need for rc across D3, unless you want to for emi. -should be ok as long as layout is tight.

## Power stage small sighnal transfer function for current mode CCM synchronous Buck?

In a first order estimation, the modulator and power stage transfer function of a synchronous buck or boost converter is current independent. Use CCM equations.

## How should I monitor the output voltage of a boost converter?

OP are you doing ON/OFF control of the boost converter, or are you controlling the vout with an error amplifier?

## EMI issues in a bridgeless boost PFC converter

Bridgeless boost pfc is not at all common…..because if it is bridgeless, then (usually) the output of the boost pfc has to eventually be rectified…..which would mean using a bridge……but “bridgeless” is wanted so no bridge is used, and in fact, the rectification is achieved by using the rectifier of the (...)

## [moved] Mosfet RDS on, determine suitable replacement mosfet for dcdc boost converter

here is waveform calculator you know that ccm boost converter have trapezoid waveform in the fet....you find rms of that, then you go (I^2).Rds(on) which gives you fet conduction loss.

## Full Bridge feedback pwm control using a microcontroller

To obtain a reference voltage in a boost converter, you need to derive it by dividing down the output voltage. Until the output voltage rises, your boost converter must operate at a default level. The duty cycle probably will be between 60 and 95 percent. You must make sure it does not become longer than a (...)

## boost converter design

I am currently designing a boost converter and I am using the basic boost converter topology, i am finding it quiet hard to compute or to assume my Vds value for me to compute my inductor values. All I see in the internet is the equation for the change in the inductor current but I cant find anything about (...)

## Synchronous boost converter pmos bulk connection to Vx or Vout ?

Are you using the PMOS as your sync forward diode? Are you sure you wouldn't rather (say) use a NMOS with a pulse xfmr gate drive, so that you get the body diode conduction and a lower-forward "bonus" when you assert it? Or maybe a bootstrap scheme for gate drive (with the body diode likewise giving you a crude forward path in the absence of est

## Circuit using photovoltaic panels.

in the red rectangle you have the solar panel which supplies the dc bus via the boost converter...and there is a batt "ES" which is a store for energy THERE IS A BUCK converter FEEDING THE BATT FROM THE DC BUS (sorry about caps). The boost converter has inductor LS. Also the Permanent magnet (...)