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Questions tagged [boost]

A non-isolated DC/DC converter topology which outputs a voltage higher than or equal to the input voltage.

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How to calculate Rslope for MAX25611

There isn't much information for calculating Rslope. THe only equation that includes Rslope is Vslope, which is being differentiated. Unsure how to approach this, as I seem to require it for my ...
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TPS61088RHL high ripple noise on normal operation

I have been working with one project which require 12 V power supply with at least 1.5 A current. I used TI Webench power designer tool to create simple 5-10 V input and 12 V 2 A output design. Since ...
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Zero Voltage Switching (ZVS) in Conventional Full-Bridge DC/DC Boost Converter

I am trying to design a Conventional Full-Bridge DC/DC Boost Converter with the following parameters (I am not sure if you need them); Input voltage: 24 V (DC) Output voltage: 400 V (DC) Output ...
Nafi Can Ereli's user avatar
3 votes
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190 views

Boost converter does not work according to the theories

I am still a beginner in this field so I would like to gain some insight about boost converters. I wanted to build a boost converter for a school project with this simple design. The parts were ...
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LTspice AC/DC converter with DC/DC boost converter

So this is my first time using LTspice and I need to convert my (AC) Vin 11.5V to DC and then boost DC voltage to Vout 22.5V. I have a few givens and some I needed to calculate. I am struggling to ...
Richard Lewis's user avatar
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Peak current-mode controller

I am studying a peak current-mode controller, and here is the schematic without slope compensation: Before introducing RSENSE to the design, I understood that if feedback voltage increases, it is ...
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Constant current feedback op-amp analysis

Above is the schematic for the convoy XHP35 flashlight driver. As you can see, the current control loop uses the op-amp as a comparator between a setpoint (low-pass filtered PWM output from a ...
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Voltage drops when trying to get high current from boost converter

I have designed a Boost converter which boost 5V input to 12V output. I designed it using TPS61378 boost converter IC by Texas instruments. I was able to get around 450mA current from the output ...
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How can I improve the feedback portion of my boost converter circuit?

I designed this boost converter to drive vacuum florescent displays, nixie tubes, and similar devices. It can drive a 10k Ohm load at 235V. I'm sure I can get away with larger loads as alot of the ...
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Op amp as a comparator output turning partially high when it's supposed to be low

I'm using an AD823 op amp, as a comparator as part of a feedback loop in a boost converter. Although the boost converter and feedback portion functions as desired, the problem is when I check the 13 V ...
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Can one CC boost LED driver be used for 2 different loads separately?

I have a constant current boost LED controller (TPS92691) which I am designing to output 4A switching between two LED strings. This is with a 2S lipo battery. One string has a stack forward voltage of ...
roaibrain's user avatar
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Does a current sense resistor not always mean a constant current output for dc-dc converter?

I've had a understanding that having a current sense resistor feeding into sense pins or a feedback pin meant that the inductor current was changing wrt the variations across sense resistor, hence ...
roaibrain's user avatar
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Apart from MOSFET selection what else determines max output current for LED controller IC?

TPS92691 is a LED controller, not a monolithic IC which has an integrated FET. Hence, I'm curious why the landing page for this part (https://www.ti.com/product/TPS92691) mentions that Iout(max) is 5A ...
roaibrain's user avatar
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What is an intuitive explanation on how a buck and boost converter transfer energy?

I can understand how a buck converter can step down the voltage but only with the formulas. I am struggling to understand intuitively how the inductor stores energy and releases it in a way so that ...
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Trouble matching the theoretical results with the LTspice simulation of a boost converter

I want to boost from 12 V to 13 V, this got me the duty cycle D = 0.076. This is my boost circuit: And this is my result in steady state: The green line is the load voltage. Why doesn't it even ...
Black Watch's user avatar
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Creating higher voltage from DC motor

I have a DC motor (5 V, 600 rpm). I use it as a generator. It produces near 1.5 V max. This voltage may differ while using it in the application and I can't control it. I want to raise this voltage to ...
Ritage Elsayed's user avatar
2 votes
1 answer
131 views

How does \$R_{ISET}\$ work in this Boost Converter?

I'm trying to design a boost converter for a backlight which has Vf:10.6-13.6V, If:140mA I picked AP3031, I did steps required to find component details e.g Inductor Value, Iswmax So far I understand....
S_D's user avatar
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LT1308 or other IC? [duplicate]

I am trying to power a microcontroller with a single coin cell battery. The MCU consumes around 15 µA or 1.2 mA (depending on if the power LED is kept on) in power save mode. I found the LT1308 to be ...
AmateurEnthusiast's user avatar
1 vote
1 answer
81 views

Confirming Application of LT1308

I am intending to power a small microcontroller off a coin cell battery. The microcontroller consumes as little as 15 microamps. I have a couple questions: Just confirming, will the IC work with such ...
AmateurEnthusiast's user avatar
2 votes
1 answer
317 views

Will my gate driver work for this situation?

This is my own design, I did a gate driver for the MOSFET. Would this design work, or should I instead use a gate driver IC?
İbrahim İpek's user avatar
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What is the easiest way to turn 1 kV DC to 10 kV DC?

What is the simplest method for me to take quick 1 kV DC pulses, and turn them into 10 kV DC pulses or higher? What might my circuit look like? Edit to provide more detail: Water rolling down a short ...
user3838548's user avatar
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Does current mode control for dc/dc conv imply a constant current output?

I am getting very confused, I have read articles about current mode and voltage mode control, and it seems that most converters use current mode control - which seems has two nested control loops. The ...
roaibrain's user avatar
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Non inverting buck boost transfer function

When considering the compensation of a non inverting buck boost (single inductor), the datasheet considers to take into account the worst transfer function between the buck transfer function and the ...
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I'd like to apply voltage to the charging module with the converter I made

I would like to implement a charging system as a graduation project. But I found that the logic of charging the battery pack is not that simple. So I want to charge the charging module by applying ...
kogyu's user avatar
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Can I supply two different voltages with the same boost converter?

I have a VFD matrix display that needs both 90V and 70V to power on. I already designed a boost converter that will give me the 90V. I was wondering if I can just put a voltage divider at the output ...
MXVG's user avatar
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Between direct FET, boost, and stacked LDOs with current sink, what's the best way to switch b/w 2 high power loads?

I have a 2 strips of 3 high powered LEDs as the loads. The load is hooked up as : Config 1 Strip 1 : 3 Green LEDs (3.3Vf, 4A) in series => 4A and 13.2V load Strip 2 : 3 Red LEDs (2.8Vf, 4A) in s in ...
roaibrain's user avatar
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1 vote
3 answers
74 views

For a high powered LED loads, is a buck or boost converter more efficient / simpler?

I have a 3 high powered LEDs hooked up into a strip to for the load. For simplicity, I am going with a constant voltage driver. The load can be hooked up in 2 configurations: Config 1: 3 Green LEDs (3....
roaibrain's user avatar
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1 vote
1 answer
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Single Source Boost Converter?

I'm trying to power a 5v microcontroller using a 3.6v rechargeable lithium cell. My plan is to do this using a boost converter circuit. However, boost converters (at least from my rudimentary ...
unknowntrajectory's user avatar
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What could go wrong with paralleling multiple DC boost converters?

My goal (edited) My goal is to charge only one powerbank from separate sources: A bicycle dynamo at 5.7V after the rectifier. Outputs 4W at best. A polycristaline 10W solar panel that outputs around ...
dobre dani's user avatar
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Small solar panel chip to charge a LiPo

I've found this small solar panel: https://www.digikey.co.uk/en/products/detail/anysolar-ltd/KXOB25-02X8F-TB/9990458 I see that output can go up to 4.5v and 5mA . That's sounds huge for me BUT because ...
Singed's user avatar
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3 answers
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Validate my 3V3 power system

My Power System, can someone validate it? I'm not familiar with using the TPS63060. Datasheet can be found at: https://www.ti.com/product/TPS63060 I'm trying to power a ATMega328p-AU + 4 digit 7-...
Mustansir Godhrawala's user avatar
5 votes
2 answers
1k views

Do you know about topologies that look like this?

I'm working on a new topology. I looked it up myself, and it says "3-level boost converter" has a low inductor. Is this right? How do I search it?
kogyu's user avatar
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Bode plot of a boost converter on LTspice

I'm currently learning about controller of boost converter. I tried simulating an LT3580 boost converter (5-12V) based on its datasheet below. What I did was basically copying the circuit from figure ...
Res999's user avatar
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Get power for driver circuitry in an inverter

Planning to build an inverter based on egs002, I got high voltage high frequency side (ferrite core transformer including N-MOS and high speed rectifier) from old UPS board which I will drive using ...
asim's user avatar
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Power Converter Average Modelling

This image is from Christophe Basso presentation. It has been mentioned in the slide that average model can predict the transient response but I have one question when we say average model then it ...
Power Path's user avatar
12 votes
3 answers
1k views

Lots of electrical noise at boost converter output

I'm trying to implement a boost converter using TI's TPS55340. After spinning up the design, I have found that the output ripple is almost 8x what I expected to see given my design parameters. First, ...
esologic's user avatar
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Reference Voltage Tracking for DC-DC boost converter

I have a boost converter which works perfectly with an s-domain controller (using a type-3 compensator and dual loop). Now, I need to do this using digital control (z-domain). I have converted the s-...
Boost_Guy's user avatar
4 votes
3 answers
145 views

LM27313 boost converter failure

I am trying to assemble a boost converter using the LM27313 (datasheet link), following the reference design and calculations given in the data sheet. The load is 6 white LEDs (Vf=2.95V) in series. ...
defragmentedBarncat's user avatar
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1 answer
116 views

Boost converter 12V to 20V [closed]

I am looking for a solution to step up voltage from 12 V to 20 V to supply a motor driver with a maximum current draw of 1 A. I have seen a couple of boost converters offered by TI which require a lot ...
404's user avatar
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0 answers
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Software averaging filter for ADC readings in a boost converter application

I'm working on a boost converter using a microcontroller (STM32G030), and I need to measure input and voltages of the converter. But, due to switching noise, the ADC readings become noisy and cause ...
Amrit Pal Singh's user avatar
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72 views

Super capacitors and getting same current burst out every time using boost converter?

I need to use a supercapacitor to power a circuit for short pulses evenly. So with the same current out every pulse. To do this, I thought to use a boost converter to get a constant current out every ...
Brother's user avatar
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Battery consideration and topology choice

I have a system with a battery. I do not know what will be the battery at the moment. And so I can select the voltage battery in function of my system. I need to regulate a voltage (15 V) thanks to a ...
Jess's user avatar
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-1 votes
2 answers
68 views

Can one boost converter power three 5 W loads in parallel?

I want to power three 12 V/5 W light bulbs in parallel. I have a 3.7 V Li-po battery which has a discharge rate of 20 A. I have an LTC1871 boost converter. Is it possible for me to power the circuit ...
Durrani Hakim's user avatar
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2 answers
109 views

Why does a boost converter need 11 mA without a load?

I use a FP6296XR-G1 (U10 / 10A boost converter) together with a MBR20100CS (D5 / dual Schottky diode in a TO252-2 package) in order to make 13 V out of 2.5-5 V. When I connect BOOin to 5 V from an ...
RRIDDICC's user avatar
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TINA-TI - trouble with boost converter based on LM5002

I wanted to recreate the LM5002 circuit in the TINA-TI program, which I encountered for the first time today. I was inspired by the circuit from the link below: LM5002 Unfortunately, the effects of ...
Proboszcz's user avatar
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77 views

Help understanding inductor formula in boost converter

I'm designing an LED light array and have chosen the MC34844 LED driver from NXP. I have elected to go with I2C control mode and a 14S8P array of blue LEDs with the following parameters: Input ...
Aggo's user avatar
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Powering a NEMA17 stepper motor (DRV8825 driver) with a mt3608 boost converter

I'm encountering a very strange problem at the moment. In the course of my school project I need to drive a NEMA17 stepper motor with a DRV8825 stepper driver, which is soldered with its breakout on ...
Georg Milecki's user avatar
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1 answer
101 views

I need to make a separate buck and boost converter with 200W power rating

I have to make two converters. One buck going from 240VDC to 12VDC 30 amperes and one boost from 12VDC to 24VDC, possibly with the ability to change from 6 to 30 amperes. A few more details: The buck ...
Kiril Hristov's user avatar
2 votes
1 answer
91 views

Input of 20~23v, need output of 24v [closed]

I have a supply that outputs either 20v or 23v, I need to step that up so it is always a fixed 24v no matter what. How can I make sure it is always a fixed 24v? Edit: This is for a coin hopper. It ...
Pyper's user avatar
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Microcontroller resets multiple times and eventually blows up in a boost converter application

I'm working on a high voltage (100V input, ~600V output) boost converter, and have decided to use an 8-bit Nuvoton MS51PC0AE microcontroller to control the output voltage (instead of using a PWM ...
Amrit Pal Singh's user avatar

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