Questions tagged [boost]
A non-isolated DC/DC converter topology.
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Boost inverter IM control by changing dc link voltage instead of the modulation index of the inverter
I have a dc-dc buck-boost converter feeding an inverter in order to control an induction motor. I am using SPWM for the inverter and I am implementing field oriented control for the motor. Instead of ...
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Why do some DC to DC converters use high inductor values (ie: 220uH or more), while some of them use much lower value inductors (ie: 3.3uH or less)
I've noticed that many DC to DC converters that have have almost the same current output will have inductors that vary vastly in their rating.
For instance, I've got two separate buck-boost modules ...
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Boost converter Output Voltage problem
I'm using this Boost converter in a design to boost a lithium battery (3.6V-4.1V) to 5.4V for powering a small camera peripheral that requires a typical draw of 80mA. I expect that the worse case ...
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LT1249 boost PFC controller CAout pin
Looking at the reference design for the LT1249 PFC controller below:
What is the purpose of the CAout pin? Are there any equations on how to setup the resistor and capacitor network?
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Boost converter output voltage drops
I'm using an MIC2251 (MIC2251-1YD5-TR) in a design to boost a lithium battery (3.6V-4.1V) to 5.4V for powering a small camera peripheral that requires a typical draw of 80mA. I expect that the worse ...
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High-power, high-efficiency boost converter design
I have a task of creating a boost DC-DC converter that can convert 3-4 V input into 12-16 V output with 100 W power and high efficiency.
There is nothing similar that I could find on the internet. ...
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Three-stage boost converter improvements [duplicate]
Here is a three-stage boost converter that I simulated in LTSpice.
I am getting the high voltage output that I desire (1.3 kV). Before I proceed to the design phase, I would like to discuss a few ...
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Three-stage boost converter + Improvements
EDIT
As mentioned in the comments, a realistic load for me would be from 1 kΩ to 100 kΩ. I also was using damping resistors at each stage but it was pointed out to me that they are not needed, so here ...
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Why there is no current flowing through the boost converter to the DC motor?
I am trying to make a boost converter to boost a low voltage from a solar cell to power a low power DC motor.
I want to power a DC motor using a single solar cell, that can only provide about 0.5-0.6 ...
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Boost Converter Loop Gain Issues
I have recently started using PSIM. I'm generating power stages of non-isolated topologies and stabilizing them to get used to PSIM. I've done a buck converter, and now I'm looking at a boost ...
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Pulsating DC voltage [closed]
I am working on designing a circuit that generates a pulsating DC voltage into a 50 Ω load.
EDIT
Here is the circuit in question, i modified the circuit, I put R6, in order to get the same circuit ...
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MAX1771 Circuit not boosting until manually forced
I've designed a circuit for boosting a Li-ion battery (3.3 V - 4.2 V) to 12 V. I am using the MAX1771 IC and one of the schematics shown in its datasheet. I've designed it to support a maximum current ...
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BLDC providing boost to rectifier circuit
I have been tasked to work on this project, and I have struggled to find clear resources that nicely explain the full concept and would appreciate some help. Here is all the information.
There is a ...
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Changing adjustment pot in DC-DC converter
I have a DC-DC boost converter module with 390 V output. Its output voltage is adjustable using its 50 kohm multi-turn preset pot.
The problem for me is this multi-turn preset pot takes too many ...
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Power amplifier to drive a fan
I'm pretty new to the field: I'm a hobbist. I'm trying to drive a fan (H412R) which runs on 12 V, 0.2 A with an Arduino board, as it is easier for me to generate a PWM signal to control the fan speed.
...
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Boost converter - Different value for change in duty cycle causing oscillations and sub-optimal performance
I'm trying to simulate an MPPT system in Simulink. The algorithm is working fine in hardware, but when I'm simulating on Simulink I have an issue.
When I change the value of delta duty_cycle (i.e. the ...
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Using a larger inductor for boost/step up does not allow sourcing more current
I made a DC-DC step up (boost) converter and when I use a 68 μH inductor, my circuit can supply some current (the 90 mA I need), and works as I expect it to. I used a 150 Ω resistor as a load to draw ...
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Boost converter for solar-charged supercaps to power an ESP32
I want to build an autonomous outdoor temperature sensor that samples the temperature once per hour and stores the results over WiFi. I would use an ESP32 that will consume about 12 μA in stand-by (...
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Any ideas about how I can fix the gain factor for my double boost converter?
I have a little problem. For a project I have to step up a 3V button battery to 12V to supply a DC motor (specifications of the problem). The hint that the professor gave to us is to make a double dc ...
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STM32F030F4Px MCU NRST pin: missing capacitor
I created a board with a STM32F030F4Px and am trying to connect to my micro over SWD using STM32CubeProgrammer. Each time I try to connect, I keep getting a message saying "Error ST-LINK error (...
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Low voltage boost-converted versus high voltage on capacitor
Let's say I have a 7.4 V Li-ion battery that I boost-converted to 36 V, and I have a 36 V Li-ion battery. I want to know if a charged capacitor from a boost converter would release energy like a ...
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Does the oscillation frequency of my step-up (boost converter DC-DC) depend on the characteristics of my motor?
I have to step up a 4V supply (the generator is a button battery) to a 12V voltage to supply my motor.
How do I size the components of my step-up converter? To compute for example the inductance and ...
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Boost Converter Gate Drive IC
We are looking for a gate drive IC for a custom synchronous boost converter. The boost converter should cover a wide range of input and output voltages, for use with a solar cell to charge a battery. ...
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Unusual IC package in Li-po charging circuit
I came across this IC package on a Chinese Li-po battery charging circuit PCB. It appears to be a type of boost converter/charge controller. It looks like a 3-sided QFN 3x3 with 16 pins. No logo or ...
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PCB design review boost switching regulator
I'm designing a board using the LTC7840 boost converter to boost from +12V to +200V in two stages (+12V -> +50V and then +50V -> +200V).
This is my simplified schematic and PCB design:
U1: ...
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TPS55340 boost converter output voltage dropping under high load
I am trying to make a high-power audio amplifier circuit consisting of the TPS55340 as a boost converter IC to boost a battery's voltage from 14.4 (12-16.6 V) to ~19 V, to allow higher output power ...
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Boost converter vs. voltage regulator
I am trying to make a thermo-electric generator for a school project, and I need a voltage regulator to keep the USBA output at a constant 5 V. However, I have some step-up boost converter modules at ...
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How can I increase the output parameter of a boost converter based on tthe MC34063?
I would like to get 16.5V and 160mA output using an MC34063 IC. The circuit is designed on Multisim shown as a picture below. It provides the desired output.
In practice, this circuit has set as ...
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uA 3 to 12V boost solution?
I have an external sensor with a pulse signal. That is the sensor controls a relay/switch. The switch will stay open for the majority of the time (minutes/hours) and once in a while close for a short ...
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Confusion about max current for this TI TPS613221A boost converter
I would like to power a circuit with 2 AA batteries for an input voltage range of about 1V-3V and an output of 3.3V to the circuit. I don't yet know what the current consumption would be but at this ...
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In two-phase boost application, the master stage draws more current than the slave stage
I designed a dual phase converter based on the LM5122(LM5122) boost controller. In two-phase application, the master draws more current than the slave. Current sense resistance is 2.2 mΩ for both ...
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How to fix hot PWM and crack 6A High-Speed MOSFET Driver?
My boost converter boosted voltage for a few seconds but it made a crackling sound, probably burnt. It doesn't switch the MOSFET now and TL494 is getting hot from the upper side which is where error ...
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Button circuit for enabling boost converter and functioning as an input
This is a continuation of a question I asked last week. I'd like to use a button to both enable a boost converter and act as as input to an MCU once the device is powered up.
@jasen was kind enough to ...
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What does the output current depend on in the booster circuit?
What methods are there to increase the output current of the booster circuit?
I got the figure below from a TI LMR62014 step-up voltage regulator datasheet.
Assume Vin = 4 V and Vout = 8 V
In this ...
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What is the advantage of using two capacitors in the DC links rather just one?
What is the advantage of using one big capacitor vs two smaller ones as DC link?
For example, one 0.5 farad capacitor vs two 0.25 farad capacitors.
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For a boost converter does the increase of capacitance values at the output, increase the temperature on the switching MOSFETs?
I'm designing TI LM5122 based boost converter. Does the increase of capacitances at the output increase the temperature on the switching MOSFETs?
LM5122 datasheet
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Modelling of a DC-DC Buck boost converter
I'm looking for some help with the following questions as not 100% where to start. I'm looking to derive the model for the averaged circuit of the buck-boost converter.
My understanding is that I ...
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Unexpected capacitor charging in booster circuit
In a previous question, I asked about an issue in this booster circuit.
I resolved that issue.
However, I have another problem. There is a 16V 4700uF capacitor (not shown in the schematic) at the ...
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Loop shaping error
I have a plant transfer function (Gp) as shown,
The GCF is at 20 kHz, and my intended switching frequency is 20 kHz, so as a first step in shaping the loop gain I try to shift it to a new desired GCF ...
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Double pole, double zero: incorrect plot?
I can't seem to find where I'm going wrong here. Suppose I want a double pole, double zero system that looks like this:
$$ \dfrac{\left(1+\dfrac{s}{\omega_z}\right)\left(1+\dfrac{s}{\omega_z}\right)}{\...
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Booster Circuit Output Capacitor Heating
I designed a booster circuit as shown in the figure. This circuit is charging a 16V 4700uF capacitor. Then the H-bridge is connected to the circuit.
I coded for the circuit and ran it. The H-bridge ...
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Controller for boost converter
I'm trying to design a controller for a boost converter by the "shaping loop gain" method as in the Fundamentals of Power Electronics textbook by Ericson and Maksimovic.
I see that there is ...
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HV boost converter draws too much current
I'm trying to make a 400V boost converter for a Geiger counter, but the circuit is drawing far too much current than what I would expect.
I'm using the following circuit:
My Analog Digital Discovery (...
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Charging a 3.7 V Li-ion cell and boosting to 5 V output
I am trying to find a board that will support charging a 3.7 V Li-ion pouch cell and also boost the output to 5 V in order to power a ESP32 board.
I would like to keep it in the loop with the rest of ...
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Is this a right way to drive MOSFET driver
I've designed the boost converter below:
Aside from the irrelevant voltmeter parts which are not connected, I'm asking if the way I'm driving the MOSFET is correct.
Working is simple, when TL494 let'...
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Power MOSFETs used as a switch in DC/DC converter circuits in saturation region
So I have explored various high voltage DC/DC converter circuits. Consider a boost converter where you have a low side switch where entire load voltage appears across the switch which is MOSFET VDS ...
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MC34063 step-up unstable operation
I am building a 3.3V -> 15V/100mA boost converter using MC34063. I have used formulas in the datasheet to calculate values of components. Then I spotted some oscillations in Vout and instability of ...
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Backfeeding boost converter
I'm designing a circuit that can be powered by either USB or a single NiMH cell. The NiMH will be boosted to 3.3V, and then an LDO will reduce both that and the USB 5V to 3.1V. I've attached a quick ...
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Can I connect low current inductors in parallel to get high current boost converter
The image below is a 680uH and 4A inductor:
Can I use 5 of them in parallel to make a boost converter which has input current of 15A and inductance of 136uH. The converter is made of discrete ...
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When does ringing on the switch node of a boost converter become problematic?
I'm working on a 5 V to 15 V boost converter with a low-current output (~5-10 mA). The supply runs in discontinuous mode because this is a small space-constrained circuit with a small inductor.
I did ...
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