Questions tagged [boost]

A non-isolated DC/DC converter topology.

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36 views

Optimal method to drive a pair of 10W 28V 0.35A LEDs using PWM for dimming

Using DC/DC boost converter is inevitable because the power supply will be 12V, so the voltage has to be stepped up to at least 28-30 volts. The biggest aspect I am looking at is to have as few ...
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2k views

Hiw to build UPS using TP4056 and 18650 Batteries? [duplicate]

I have build this UPS battery supply to power a Raspberry Pi using 18650 batteries,using the TP4056 battery charge controller. The circuit as follows: This is working fine at the moment, but I'm ...
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53 views

Safe to use StepUp-Converter to power LED-Monitor?

I would like to use the following setup, since I already have the meanwell-powersupply. Can anybody tell me if this should be safe as long as I care for good cooling of the Step-Up-Converter, good and ...
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178 views

What is the reason of undesired peak current in PFC non-isolated boost converter?

I have attached inductor current waveform of PFC boost converter. After the particular current level, an undesired peak is coming. I have done some study and thinking it might be because of inductor ...
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1answer
265 views

Step-up converter with Vin, Vout, GND

I want to use pololu step-up converter https://www.pololu.com/product/2836 in order to power a 5V device with two Ni-Mh batteries (1.3V each). It has only Vin, Vout and GND connectors. I've checked ...
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1answer
55 views

buck boost converter design using LM3759

I have requirement of DC output voltage in the range of 8V-30V and DC Output current to be max. 40Amps. I am using transformer 28-0-28, 7A rating transformer for the AC source. Can I change the ...
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1k views

Startup problem in boost converter

The figure below is a diagram of a voltage-mode controlled boost converter. I am wondering how experts solve the start-up problem for this converter. Problem: Assume the output voltage is zero at ...
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2answers
66 views

Different logic levels on single input

I have a circuit that has about a 1V input that gets boosted to 3.3V. To enable the boost converter IC, a switch is pressed which causes the enable signal [EN] of the converter to go high (and stay ...
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2k views

0.9v boost with Tp4056 for 6v Solar Panal?

Can I use it like this... If so how can I limit my solar panel to only output 5v cause my booster can only handle up to 5v input.
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1answer
184 views

Boost Converter Inefficiency

I in my design I have boost converter (using PAM2423) which is powered by LiFePO4 (3.2V) cell. It works and gives accurate output but it is very inefficient. I checked voltage on the coil and I think ...
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1answer
265 views

MC34063A Poor load regulation in case of boost and buck converters

I'm using following circuit for a boost converter using MC34063A IC. The circuit is designed for 24 V, 250 mA output. The simulation works fine but the actual circuit on a PCB behaves weirdly. In ...
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67 views

Using a GE 65W Boost Converter adequate to charge a 13s6p Lion BMS

I have a 13s6p Lion array with BMS I want to charge from a 12v source. This is the Arduino Lion charger project I am attempting After letting the smoke out of an undocumented Chinese boost converter,...
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1answer
103 views

Phase/Gain margin measurements for current mode boost regulator

I'm looking for where to place a sense resistor in the feedback path of a current mode boost regulator with a layout similar to the one in the picture. Should I place in on the FBL or FBH trace?
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2k views

How can I simulate a Infineon IR2183 gate driver in LTspice?

I'm making a boost converter in LTspice, initially with ideal switches and comparators, but now trying to use realistic components. For the MOSEFT I just picked one from the available ones that has a ...
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3answers
445 views

Boost converter in series with buck LED driver

What I want: Drive a 17V, 600mA COB LED from a 5V 3A USB powerbank. Approach 1: Use a boost LED driver. I have looked through Digikey as well as manufacturers' parametric searches to find a suitable ...
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1answer
564 views

Is a MPPT controller basically a buck converter with a feedback geared towards power?

Conceptually, is a MPPT controller for charging (simple) batteries with energy from solar panels basically a buck converter whose feedback loop (which influences the PWM duty cycle) is geared toward ...
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137 views

How can I calculate the volt-second balance of a boost converter with 2 outputs?

Say I have a boost converter, but it has two outputs and three states. On interval it charges up the inductor, the next interval it charges one output, and the next interval it charges the other ...
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1answer
77 views

Continuous Filter design for measure signals from Boost Converter out

So, I found a simulation that uses PID to control the voltage of a DC bus, for voltage measure the author use a "func transfer" in simulink. I wish to know what kind of filter he design and how can I ...
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33 views

How can I drive a bridge with three states and two high-side switches?

I want to drive a configuration similar to the one presented in Figure 1 of A novel tri-state boost converter with fast dynamics, but use a MOSFET instead of the diode for efficiency. I want to put ...
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1answer
203 views

Inductor and Capacitor for Bidirectional DC-DC Converter with Battery

I have to design a bidirectional converter to regulate a DC bus at 250 V with a battery bank at 144 V. My question is how to do it optimally, because I do not know the maximum ripple allowed in the ...
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1answer
111 views

How to increase and maintain voltage gain of DC DC converter with switching load, and choose the right capacitor and indcutor

I have a boost converter that with load 22K, it produces 120V with input 12V. the inductor is 220uH and the capacitor is 150uF. i need it for ultrasonic pulser with frequency of 1-10 MHz, the load of ...
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1answer
343 views

Transistors on opamp power rails

What is the advantage of using transistors on the power rails of an opamp over more typical boost circuits? I have seen a circuit topology called the "Widlar Boost" made famous by Bob Widlar. The ...
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1answer
205 views

huge reverse current leakage in fast recovery diode for boost converter

i have a boost converter circuit that will boost 12V to around 180V, the circuit is works pretty good but there is huge reverse current in fast recovery diode right before the load, here my circuit ...
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2answers
62 views

Efficiently Boost voltage for small single burst of current

How can I efficiently boost 4.2v ~ 3.0v from a battery up to 5v for a short burst of current? My load is essentially an RC circuit with 17.8R and 300uF that I need to charge as fast as possible to ...
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128 views

How much voltage multiplication can boost converter produce?

I want to make a PWM based inverter for my college project to convert 12V DC to 220V AC. But as the PWM output is not exactly sine wave, it can not be stepped up using a transformer. So I need to ...
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1answer
2k views

nodeMCU power via battery + battery charger + booster

I need to power a nodeMCU (as far as I know it can work with 3v3 but I use some I2C modules that need 5V so .. let's power everything with 5V) I have a Li-ion battery (3.7V) I have a TP5046 based ...
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3answers
345 views

Effect of switching frequency in boost regulator with switching load

I have an objective to make a pulser for ultrasonic 1Mhz and 120V, for step up DC i used a boost converter with switching frequency 10KHz, 0.9 Duty Cycle and 12V supply, the boost converter work ...
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2answers
723 views

Large current spike in turn on boost converter

I have a circuit that boost voltage from 12V to 120V, the problem is the current in inductor is too big, around 5A, the circuit and the simulation in LTSpice is like this the red line is the current, ...
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144 views

DC boost supply no-load voltage

I am working on a Geiger counter circuit which utilizes a boost supply similar to the one shown below to polarize the Geiger tube. The tube datasheet specifies a maximum voltage of 475 V. However, I'...
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2answers
106 views

boost converter control technique

Is it possible to design a high power wide input supply range boost converter which has to be compatible with single phase as well as three phase power supply? and if it is possible then which analog ...
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1answer
91 views

Single input dual output simulation help

Ive been using PSIM and there is a problem with the circle mosfet wont turn on. Ive the correct duty cycle and input voltage is higher than the threshold. Can someone simulate it on another simulator ...
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82 views

Self powering torch - boost converter calculation

I was implementing the TPS61200 Voltage Boost Converter from Texas Instruments in my circuit to boost the voltage output from some Peltier tiles to then power a supercapacitor which would then power ...
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1answer
926 views

How can I change an LTspice .model parameter during transient simulation?

I'm trying to make an idealised boost converter using current feedback. I want to simulate changes in duty cycle, which is controlled by the Vt and Vh of the switch. I managed to use .step to see the ...
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2answers
126 views

Inductor for Boost Converter

I was experimenting with a low watt boost converter,12V to 100V,50mA using the venerable MC34063A and an external MOSFET switch..I calculated the inductor value to be about 100uH.So I made two ...
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2answers
223 views

How to control high output voltage boost converter

Input 24 V, output > 100 V. I have looked at switching controller ICs on Mouser.com but for my input voltage they are designed only to output 50 V. Like this TI TL5001
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1answer
47 views

Protection on Dell notebook power supply

[Beware: i'm a electronics-starter] Hello, i built a variable power supply using a DPS5005 and a Sainsmart boost converter to get 42V. I'm using an old dell notebook PSU (DF266 Output: 19.5V 4.62A) ...
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605 views

mc34063 boost converter - low performance and noise on avr interrupt

I have some problem with my nixie project. 1 - my mc34063 boost converter have poor performance. While i use active pull down D3 and Q2 for driving my mosfet then its enough for only one nixie tube (...
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2answers
385 views

Can you place two boost converters in series to boost 3v to 180v?

I am looking to build a power supply for a NIXIE tube. They need to output 180v at 4ma but will run off of a 3v lithium battery. The battery can take the current requirements for the input, but at the ...
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1answer
81 views

2xAA + 5V Boost Converter: Unexpectedly Low Current Output [closed]

I'm quite new to electronics, and decided to make a mobile powerbank for my Raspberry Pi Zero / Phone out of 2xAA Batteries and a 5V, 600mA boost converter with USB output. However, I'm getting an ...
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3answers
189 views

Current consumption of devices [duplicate]

I want to use boost converter to to supply higher voltage to LED .I have confusion about which smps power supply to use on input side. From specs. I am unable to understand why input current ...
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2answers
547 views

Boost converter for PV applications

I am designing a 18V to 24V boost converter with a solar panel as its input and a variable resistor at the load side for taking measurements. The boost converter will be doing the Maximum Power Point ...
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1answer
92 views

Input of boost converter or charge pump in the energy harvest [closed]

I read some paper about the energy harvest, and lots of paper said the induced voltage from, for example, the thermo-electric harvesting could be as low as tens of millivolts in a realistic case, so ...
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5answers
2k views

Boost converter, how does diode allow current from inductor to flow towards capacitor?

So I watched this video to understand how DC-DC boost converter works. Here's circuit diagram: And I don't get, when switch is off, and polarity in the inductor is such that positive is on the right,...
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1answer
115 views

Circuit analysis- boost controller IC frequency change

can anyone explain how this circuit works. A little background, this is a circuit which is used to change the switching frequency of a boost controller IC , so that it doesn't operate at a single ...
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2answers
303 views

Are there any caveats to running a boost converter at zero duty cycle?

Following up on a previous question, I've implemented the following scheme: simulate this circuit – Schematic created using CircuitLab The normal buck converter in the dashed box is used to ...
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2answers
500 views

boost converter with overvoltage protected output

In my device 6.5V is generated from 5V USB. This can be done by boost converter, but if something goes wrong (external resistor voltage divider break up), due to overvoltage output condition (for ...
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1answer
40 views

The reason why the output of ZCS-controlled boost converter is 1.2V,not 1V in this paper

Here is the three stage stepping up architecture,and in the paper,the author said that when \$ V_{out} \$ increase up to 1V,shunt connecting the capacitors \$ C_{DDi} \$and \$ C_{out} ...Finally,the ...
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1answer
183 views

The meaning of peak efficiency for boost converter

I found the definition of peak efficiency: Peak efficiency=\$ \frac{P_{out,max}}{P_{in,max}} \$,at first,i thought if i have higher peak efficiency,and i have the output voltage,which is much higher ...
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2answers
213 views

Why is the peak efficiency of most charge pump less than boost converter,but still can be published in IEEE [closed]

I read some paper about boost converter recently ,and find some author will compare the peak efficiency of their boost converter with charge pump,and the highest peak efficiency i saw is 33%,the ...
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2answers
744 views

High Step-up Ratio DC-DC Convert (12V-to-150V) - Boost, Flyback, Coupled-inductor Boost?

I am trying to design an on board DC DC converter that generates 150V from a 12V input. I'd like to design it to handle at least a 30-50mA load, but in reality the load will most likely be smaller. ...

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