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Questions tagged [dc-dc-converter]

DC-DC conversion. Implies conversion of a DC voltage level up or down. DC-DC converter can be isolated or non-isolated. Electronically it can be done by many kinds of circuits, depending upon the application (charge pumps, voltage multipliers, linear voltage regulators, boost/buck switched converters, etc)

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28 views

Why Webench power tool suggested using this Hot-Swap Controller (TPS2420) for my design?

I was trying to build dc to dc converter that has one input which is anywhere between 9V-20V and has 4 outputs: 5v @ 2.5A, 3.3V @ 2.5A, 3.3 @ 1.5A, and 1.5V @ 1.5A. So, I sequenced the outputs and ...
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20 views

getting arduino PWM from 0-5V to 0-10V or 0-12V?

I have an IR2110 driver and a LOD voltage regulator 15V from a solar panel. now this will supply 15V to VCC as shown below. Since I have a LOD voltage regulator of 15V, I can't apply the same voltage ...
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26 views

Does a DC isolator smooth the voltage as well as a regulator?

I'm designing a power supply for multiple guitar pedals. To minimise noise I'd like the output voltage to be smooth when it's up and running. (I don't mind about small transient fluctuations when ...
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34 views

Failed to find LOD voltage regulator for IR2110 for driving two IRF540 mosfets :( [on hold]

I searched the entire internet for a LOD voltage regulator up to 1A for Vin 6V-37V coming from the solar panel and fixed output 15V for VCC and 5V for VDD. I have two IRF540 mosfets to be derived by ...
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2answers
25 views

Is it possible to control DC-DC boost convertor by N-ch MOSFET @ Vin-?

With the widely available DC-DC boost ready built modules based on MT3608 chip can I control it by adding the N-ch MOSFET to the Vin- line like this: The module itself are pretty reference in design ...
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3answers
71 views

How to reduce DC Voltage and Current [on hold]

I have a 12VDC/5A from battery. I want to use that battery to supply 3.3VDC / 600 mA of microcontroller. How should I do it?
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28 views

Using IR2110 driver in synchronous buck converter?

in using MPPT charger for battery, can use a variable input- fixed output voltage regulator that will be connected to the solar panel input?, this way I can have 15V for VCC and 5V for VD. I really ...
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1answer
55 views

Bootstrap cap value and how it relates to fsw and duty cycle?

I am designing a synchronous buck converter with mppt. I have a question about the bootstrap capacitor value. Knowing that the duty cycle and fsw are dependent on this value. What is the best approach ...
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27 views

Solar panel voltage with buck converter and mosfets?

If the input voltage of the solar panel as Vin in the picture below. if Vin is in the range of 10 V to 37V.The average voltage value in the node in yellow during switch 1 is on and switch 2 is off is ...
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1answer
27 views

High side MOSFET Driver component selection

I'd like to drive high side and low side MOSFET for buck converter, so I have used IR2184s,(the image bellow) to do the job, The frequency of oscillation is 1Mhz, so DRVR is a square wave signal of ...
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37 views

Please Help :(, half bridge mosfet driver and power mosfets in dc-dc converters?

IR2113 half bridge driver for both N-channel IRFZ44N mosfets for a buck converter. Now I just want to know how to power this driver from an Arduino and also what is sink/source current mean? ...
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1answer
40 views

EV Car's battery voltage and charging with solar panel

How much is the voltage of electric car's batteries? I was thinking about a DIY electric van (Mercedes Sprinter) with 3x200 watts solar panels on the roof. I'm not sure but let's say the EV batteries ...
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23 views

Single IC for charging and boosting LiPo battery [closed]

I'm designing a power management system for a bio-signal acquisition system (low-noise amplifier, ADC, uC, Bluetooth). I will power the system using a LiPo battery such as this. (3.7V, 500mA, 1050mAh, ...
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27 views

Switching between high voltage power sources [duplicate]

I need to get an LED to switch on once the voltage across a capacitor goes above 40V. It must then remain on from 40V to the maximum voltage reached by the capacitor which is currently 1200V. The ...
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17 views

Oscillating boost converter output voltage that has a differential amplifier for load, in DRV8662 piezo actuator driver IC

I am building a circuit to drive a piezo stack in a pulsatile fashion and I am using the DRV8662 piezo driver from TI to do so. The circuit diagram is shown here (please disregard the several ...
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26 views

Ripple in output voltage

I am working on an Active Clamp Forward converter. Schematic is given here: Specs: Output voltage-5V Input voltage 26..42V frequency=500KHz Output power=10W It is working fine in open loop, but in ...
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3answers
632 views

DC-DC converter from low voltage at high current, to high voltage at low current

I want to build a DC to DC converter with: 25 V input side 400 V output side 4000 watts of continuous rating That means (obviously) 160 amps on the input side and 10 amps on the output. I can’t find ...
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1answer
69 views

DC-DC Converter [closed]

There is confusion because the name of the dc-dc converter is, that it is isolated, but in the description, it says it does not provide isolate effect. Can you tell me what type dc-dc converter is ...
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2answers
39 views

Multiple dc-dc Converters mid-tap on batteries connected in series

I want to design a 48v system for an RV with multiple Lithium batteries connected in series (either four 12v or two 24v lithium batteries). I like the idea of a 48v system to reduce the size of the ...
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1answer
45 views

suggest a current booster circuit DC-DC 1uA to 3mA

I have a source of power which can provide up to 1.2uA at 1.5 V DC, however, I would like to power a circuit which uses 3 mA at 0.6 V DC. What would be the easiest way to do this? Is this even ...
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41 views

will dc converter discharge battary?

I am using a mini-360 dc-dc converter with arduino pro mini, so will mini-360 discharge battery without any load? Is it correct to use power switch as on image?
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4answers
151 views

300VDC to 24VDC voltage converter - Cheapest implementation

In an application, 100+, 100W 24V halogen lamps need to be individually controlled and run simultaneously. They stay on for a few seconds at a time and need to have very constant irradiation. ...
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3answers
89 views

Which is more efficient: A much larger than needed step-down voltage converter, or one rated closer to the actual load?

I'm designing a custom audio system for my electric motorized pedicab. The motor of my cab runs on a 48 V 33 Ah battery, and I have planned to use a 48 V to 12 V step-down converter to simultaneously ...
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63 views

Experimental feedback scheme in DC-DC boost converter

Does anyone know if it's possible to connect the feedback pin of a DC-DC boost converter chip like Texas Instruments' LM2733 in a different manner than the one described in the datasheet, namely on ...
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2answers
57 views

electronic dc voltage regulator controlled by arduino

i am new to the electronic things so please help me figure out a solution. I am looking for a way to control voltage by Arduino of my 60volt 10 amp dc power supply i.e to get any voltage from 0 to 60 ...
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2answers
109 views

DC to DC converter, different V-

We currently have a DC to DC converter (12V to 5V), but it seems that the V- of the input and output have a difference of around 1V. However, we need to have a single reference everywhere. Can I ...
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1answer
45 views

28V Stepdown with TracoPower TRN 1-2411 DC/DC converter for ESP8266?

Im new to electrical engineering. For a project I want to supply an ESP8266 with power by using a 28V Milwaukee Battery. My Question is: Can i supply the esp at the VIN PIN using the 2411?
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35 views

Should I add a DC link capacitor between HV battery and buck DCDC converter?

My application does not require an Inverter. If i don't need the capacitor,is it still better to add a resistor to drain any other system capacitance voltage?
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1answer
104 views

explain the working of this circuit [closed]

I'm basically trying to understand how this Dc to Dc step-up converter work. please help me.[![dc-dc step-up voltage converter 1v-9v][2]][2] I need to design a DC DC step up converter using bjts. ...
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1answer
138 views

[UPDATED, not solved]Simulating a Buck converter

Im trying to simulate a buck converter done in class to see if this fits what the theory says it would be, It must receive 110 V and send to the load around 60V and 20 A, the circuit is: And with ...
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1answer
89 views

LTM8073 integrated DC-DC buck converter issues

I have a board with two LTM8073 "silent switcher µModule regulators" by Analog Devices/Linear Technology being used to provide two separate power supplies. This is a 10-layer dual-sided board that was ...
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19 views

Using a switching DC-DC converter in high dynamic range current/voltage sensing

I'm thinking of making a power meter circuit which will have a high-side current-sensing amp (LTC6102), a resistive voltage divider for sensing the voltage, a dual op-amp (OPA2365) as a buffer for the ...
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24 views

Current Controlled Potentiometer

The core problem I am having is that I need to be able to control a DC to DC voltage regulator based on input from a 4 to 20 mA signal. The end goal is to have the output voltage of this regulator be ...
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0answers
33 views

How to combine a charger for LIPO battery with a boost step-up voltage converter?

I want to power a device with up to 4A at 5V from a single-cell LIPO battery of 3.7V 5000mAh and be able to charge it. The idea is to have everything packed up inside a case, so I don't want to rely ...
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1answer
29 views

Where is the boost converter in Cypress PSOC 5LP CY8CKIT-059 Prototyping kit?

I have been using the boost converter (dc-dc converter) of "PSOC CY8CKIT-050 development kit" for a time, but I wanted to use the one in PSOC CY8CKIT-059. Nevertheless, I didn't find the boost ...
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1answer
29 views

SG3525 Closed Loop Inverter Waveform Problem

I'm using a sg3525 ic on a full bridge dc-dc converter in closed loop. The system is working fine, I don't have a problem with it. Output is just like what I want. The problem is inverter part's ...
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44 views

Solar charger for lithium batteries

I am trying to build a 2s 7.4V solar charged lithium battery pack to power an arduino UNO and SIM900 GSM shield. I have a 12V, 10W solar panel, BMS protection board and a DC-DC CC CV buck converter ...
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18 views

Converting boost controller to sync boost controller using H-bridge or 2 gate drivers

I am trying to reduce power losses in a boost led driver. For example TPS92690, uses a MOSFET and a diode for boost mode. Is it a bad idea to use H-bridge instead, or two gate drivers (one in straight ...
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45 views

Buck Converter Load Regulation

I have attached a schematic of a buck converter circuit I have designed. It's designed using a LMR16030 IC. Input voltage: 12-14V Output voltage: 5V Switching frequency: 1MHz Output Current: 2A I'...
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20 views

building real simulation in multisim(NI company) of dc-dc SEPIC convertor

hi I am trying to build real simulationin multisim of dc-dc SEPIC convertor how ever in my output voltage i get a lot of RIPPLE . the problem is that I get a lot of spikes in my capacitor current . ...
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54 views

Reactive vs Real Power in DC-DC Converters

I don't understand which form of power, reactive or real, should be dominant in a maximally efficient DC-DC boost converter. As the circuit charges the inductor, the current and voltage will be out ...
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1answer
44 views

LC ringing on synchronous buck converter

I am working on a board that uses LTC3891 as a buck converter to step down 24V to 12V. There is quite a significant oscillation at the switching node, upstream to the inductor which I am curious about....
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1answer
28 views

LT8330 Boost Converter burst mode

I have a LT8330 Boost converter issue. As the output load decrease, this boost converter will use a burst mode, switching between sleep and activity, and thus decreasing the switching frequency. The ...
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1answer
41 views

What does the ripple frequency of a buck converter indicate and how does it affect the DC device connected to its output?

What is the desired ripple frequency for buck converters connected to computers, networking device as power supplies? Can we judge the quality of power supply from ripple frequency? (buck converter ...
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16 views

Boost converter load regulation

I am currently building a boost converter with PID control to control the output based on the discharge. The output will be fed into a DC/AC converter which, ideally, will power different loads. As of ...
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1answer
73 views

Galvanic DC-DC isolation without inverting/rectifying

Is this possible? I have a 12V regulated supply that I need a 36V and 5v (100W total) supply from to power a peripheral and power the control circuit for said peripheral. This peripheral uses a piezo ...
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2answers
44 views

Adding push button to CC DC to DC converter to adjust CC

I have a CC/CV DC to DC converter I bought on aliexpress. I does not come with a screen so I attached to it an LED voltmeter ammeter. Anyway everything works fine. One thing though, I don't know at ...
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1answer
65 views

DC DC Converter Failure Modes

If a DC-DC converter (say 48V input to a 5V device) fails, is it possible for it to send the raw input voltage (48V) into the 5V device? And, if warranted, could anyone elaborate further as to common ...
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62 views

What is the current draw of a capacitor in a VOLTAGE BOOSTER

I'm trying to learn by myself the principles of a voltage boost converter. **BATTERY IS 1.2v@4300mAh I noticed that many sources* suggest not putting a resistor in series with the capacitor (as in ...
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54 views

Adding Current limit for DIY DC-DC converter (CC/CV battery charging)

I was following the circuitry by great Scott for the DIY buck converter here: https://www.youtube.com/watch?v=m8rK9gU30v4 . Created a converter that gives 0-23V on 24V supply. After this i wanted to ...