Questions tagged [boost]

A non-isolated DC/DC converter topology.

Filter by
Sorted by
Tagged with
0
votes
1answer
97 views

Fried TPS61030PWP

I have constructed the circuit below which I put together based on the datasheet. I am testing this circuit using a bench power supply. I have tried 1.8V and 2.7V supplies. With no load or a resistive ...
6
votes
2answers
380 views

Maximum power out of thermoelectric generator?

The conventional method to extract maximum amount of energy from ThermoElectric Generator (TEG) is to load it with a resistance equal to the TEG's internal resistance as the maximum power transfer ...
4
votes
2answers
234 views

How does this circuit work

I am looking at this circuit which converts 5V to 13V, and am wondering how it is designed. I have seen inductors being used in buck convertors, where a squre wave was used to convert and make it a ...
0
votes
1answer
274 views

Voltage vs Battery Life trade off

I have a PCB board which is supposed to be powered of 12V supply.However, now I would like to run this of a battery. Most LiPo batteries are 3.7V , and 12V batteries are big and hard to get. What is ...
0
votes
2answers
64 views

Can boost converter operate under these conditions?

I am wondering whether the boost converter is possible to operate with these conditions below or not: All components or sources are ideal Initial voltage across output capacitor is zero voltage. ...
2
votes
2answers
351 views

Is feedforward used in boost converter operating in DCM mode?

Is feedforward used in boost converter operating in DCM mode? I saw some examples where feedforward is used to control boost converter in CCM but not DCM mode. So I am wondering if it can be used in ...
9
votes
1answer
652 views

Boosting 5V/2A to +70/-70V for op-amp rails?

I am trying to drive an ultrasonic "tweeter" for a wearable research project. Compared to a normal speaker, the tweeter has a very high impedance, upwards of 4kohm. As a result, it requires a very ...
1
vote
2answers
188 views

Why this inverter is used in the PWM circuit?

The circuit below is a programmable duty cycle modulator for boost converter in a paper. As from the picture, there are two signals CLK/64 and CLK/64SHIFTED. Could you explain why the signal CLK/64 is ...
4
votes
4answers
3k views

Why can't you use a coil to transform 5 volts DC to 12 volts DC?

Why can't you just use a coil transformer, like when you want to get 240 volts out of a car battery instead of a boost converter? I found a thread that sparked my interest - How to transform 5V into ...
0
votes
2answers
1k views

How to change the width of a given square wave with duty cycle 50% without using microcontroller or ramp solutions?

Is there a simple way to change the width of a given square wave with duty cycle 50% without using microcontroller or ramp solutions? Actually, this square wave is switching frequency for my boost ...
0
votes
2answers
774 views

Question on LM2577

I have a hard time fully understanding the datasheet of LM2577. I bought this product that has a LM2577 in it and the specifications indicated by the seller that it can have a maximum output current ...
-1
votes
1answer
136 views

How to get 200mA/6v supply for MG-811 sensor from 2A/5vdc psu in small form factor? [closed]

I have a wall mounted raspberry pi, which has a 5vdc cable running into it, and that supply is rated for 2A. I'd like to add a CO2 sensor to the mix, and I've got a MG-811 to hand That component ...
0
votes
1answer
335 views

Boost converter with input-referenced output

I'm building my first switching DC/DC converter as part of a larger circuit. I need to convert a input voltage range to an overlapping output voltage (e.g. 3-5V in, 4V out). This would typically be ...
0
votes
1answer
1k views

Flyback converter for a step-up application (4VDC to 48VDC)

From what I have seen, flybacks are used for step down applications, are step-up applications possible? More specifically, is converting from 4VDC to 48VDC possible using a 1:8 transformer? I'm ...
1
vote
3answers
774 views

Transformerless BUCK SMPS for 1kV->12V

I have a challenge to push 500 Watts (15V) at 100 meters of telco telephone cable (0.088mm2, 28 AWG, 200Ohm/km, 500MOhm insulation). The only way to achieve this is by boosting the voltage up to ...
3
votes
3answers
596 views

Is it possible for buck boost converter to output -48V with +12V input?

I have a school task for creating a Buck Boost converter that takes 12V and outputs -48V. I have done some digging and couldn't ...
1
vote
1answer
335 views

What's going to be more efficient, buck from series or boost from parallel?

I've found many similar questions, and hate to ask something so similar, but my goal is to get usb power (4A continuous) from 4 18650 Li-Ion cells. I'm debating putting them in parallel and using a ...
3
votes
2answers
826 views

Supercapacitor Emergency Power Supply UPS

I'm considering hiring an electrical engineer to design an emergency power supply for use in embedded devices. This power supply only needs to hold ~15 seconds of charge (enough time to safely shut ...
2
votes
2answers
485 views

How dead time happens in boost converter?

I understand that in a buck converter dead time happens as both switches are ON simultaneously and this short the power supply. However, I don't see how dead time can exist in boost converter. Could ...
1
vote
2answers
762 views

DC motor temporary speed change with simple Boost Converter

I would like to know is if it is possible to give a slight voltage change to a dc motor with simple electronic items. Meaning that the voltage would normally be a set amount (10v) but would either ...
0
votes
1answer
4k views

Backlight LED Boost Converter testing

I am using LCD EJ080NA TFT with LED back-light. LM3410 is used as backlight driver. Schematic as below: But when I am testing it on hardware, I tried without load and with load. Without load, IC ...
1
vote
1answer
280 views

What is this circuit called? (Dual of a boost converter)

A boost converter is a circuit that uses power from a voltage source, to act as another voltage source with a greater voltage. To conserve power, it draws more current from the input than it provides ...
2
votes
3answers
5k views

How to use the power good signal properly?

I'm powering a circuit from a buck converter. I've seen that many buck/boost converters (for example, TPS62177) have a PG or power good output signal which ...
0
votes
1answer
514 views

Need help choosing options for 12V supply from a Lithium-Ion battery

There are lots of Class D audio amplifier modules for 12V use that are both readily available and inexpensive, intended for automotive use (hence the 12V rating). I would like to use one of these, ...
0
votes
2answers
290 views

Multi cell lipo charging or boost converter

I'm working on a prototype for a project that needs to drive a stepper motor at 12V and 2A. It needs to be powered by lipo batteries, have all of the charging circuitry in the device, charge through ...
1
vote
1answer
271 views

Properly rated components for 12V -> 500V booster circuit

I am working on a pulsed induction linear motor (aka multi-stage coil gun) as a hobby project. I'm more of an electronics kind of guy so this is an opportunity for me to become more familiar with ...
0
votes
3answers
1k views

Booster Converter Question

So i've been learning about boost converters, and it makes sense. From what I understand in the schematic below when the switch closes the inductor receives a large amount of current (since we have no ...
0
votes
2answers
115 views

Voltage increase per cycle across capacitor for a boost converter

So I'm looking to make a high voltage capacitor charger using a boost converter and I'm wondering how much voltage the capacitor will increase per cycle of the boost converter. In reality, I would ...
0
votes
3answers
968 views

Does a boost converter lower the source current of a solar panel?

I am trying to build a solar powered phone charger using small size solar panels. I have two solar panel connected in series, each of them are 4 V and 50 mAmps. When I connect the solar panels to the ...
0
votes
1answer
54 views

Calculating the time for current reducing to zero from a charged inductor in a series LC circuit

I'm wondering how you calculate the time taken for the current in a charged inductor to reduce to zero with the only current path being through a capacitor. I'm looking at this from the perspective of ...
0
votes
2answers
489 views

3V7 to 5V level conversion

In my product i am using a wifi module requires 3.3v and a bunch of other components requires 5v. For this i am using 3.7v 3000mAh battery. So here i have a doubt whether to use which case or any ...
1
vote
3answers
4k views

How to make a boost converter circuit

I've seen multiple different explanations on boost converter circuits, these two specifically explaining in very intimate detail how they work, and on how to calculate certain values: How to design a ...
1
vote
2answers
934 views

Switching power to a device from a microcontroller

Situation: I need to turn off power to a 5V lcd screen hooked to a 3.3V microcontroller when it is off, otherwise the lcd screen pulls power all of the time. The goal here is for the LCD screen to ...
-1
votes
2answers
2k views

does a booster affect the battery capacity of a circuit? [closed]

will using a 3 to 5V booster IC affect the power capacity of the battery i use in my circuit? as in, will it consume more power?
1
vote
1answer
1k views

Buck boost converter - High current 15A@12VDC +

I don't have much experiences from designing and understanding more complex circuits. I only have basic knowledge how different components work and how to create and calculate simple transistor ...
0
votes
1answer
747 views

3.8V batteries to 5V

So I got me a raspberry pi 2, and a R2FX, both supplied with 5V, R2FX has a power consumpution of less than 1W. I own several accumulators from old phones & smartphones which got 3.8V . Maybe a ...
-4
votes
2answers
547 views

boost converter giving less output voltage when comapred to input voltage [closed]

boost converter design needed 6 V to 12 V. Can Any one give the data
2
votes
1answer
474 views

Extending battery life: Calculating advantage of adding more batteries

I have a small 3 volt device with an MCU and 8 LEDs that I'm currently powering by two AAA batteries connected in series. With fresh batteries, I start out with about 3.2-3.3 volts and get very good ...
0
votes
2answers
414 views

Boost converter and a pulsed load

I'm working on a design which needs a 9V supply. This is currently provided by a 9V battery, but I'm looking to change to a lithium battery (3.3 to 4.7V). This supply has a pulsed load of up to 2A, ...
4
votes
1answer
610 views

Capacitor Powered Vehicle Project

I'm working on a project to design and build a 1/10th scaled ultra-capacitor powered electric car. I'm a Mechanical Engineer & I really want to focus on the the building and testing of the vehicle ...
2
votes
2answers
5k views

DC - DC Boost Converter Calculations

I have been attempting to simulate a DC-DC Boost converter in 'CircuitLab', rather than going down the route of using an IC I have decided to go down the 'traditional route' and use a MOSFET, simply ...
2
votes
2answers
1k views

Ripple and Ringing from Cheap Chinese Boost Converter

I'm using a cheap chinese XL6009 adjustable converter module to boost 5 V to 12 V. To test this converter, I used a 5 V supply, a 120 Ω ohm load to draw 100 mA current (100 mA at 12 V is the ...
0
votes
1answer
123 views

Boost circuit for LCD matrix display

I'm using the hitachi 66720 controller for the diplay and there is a boost schematics which helps to provide enough current for the display. Here how it looks like: I don't understand how transistor ...
-2
votes
2answers
155 views

Boost converter Issue

My aim is to boost a 3v DC input voltage to an output DC voltage of around 12 to 15v. Based on the schematic I have designed this should work theoretically with the components I have chosen. Right now ...
-2
votes
1answer
507 views

High voltage boost converter safety [closed]

If two standard 1.5V batteries are connected in series (3V), and then the voltage is stepped up using a boost converter to 700kV, is there any danger of burning or electrocution, given the incredibly ...
2
votes
1answer
2k views

High step up DC-DC converter switch mode power supply

I tried to design DC-DC high step up isolated single switch converter and simulate it in Proteus 8 professional, that design have a gain reached to 20 if that possible? and I confused by one thing, I ...
0
votes
2answers
218 views

Right half plane zero calculation

I'd like to use the Micrel MIC2606 boost converter for a 36 volt circuit I'm working on. The datasheet gives a formula for calculating the RHP zero based on output voltage, current, and inductor value....
0
votes
2answers
564 views

Understandig of boost converter

I am currently using boost converter so I made all the calculation to make it work. My question is not about calculation it is about how physically is a boost converter working. Here it is : the ...
1
vote
2answers
435 views

Buck-Boost converter - Boost mode not working

I am using TPS63001 Buck-Boost regulator for creating 3.3V in my circuit. The converter works in Buck mode as excepted. So when I give 5V on the input, it is OK. When I reduce the input voltage from ...
1
vote
1answer
1k views

How to calculate the current in a PWM LED driver circuit?

I've been fascinated by the simplicity of the driver circuit based in the YX8018 in the prominent solar garden lights, they were able to simplify the circuit a lot in a simple boost topology by just ...

1
9 10
11
12 13
16