The IR2153 chip is a self-clocked driver, which was developed specifically for operation in ballasts energy saving lamps. It has very low current consumption and can be powered via a limiting resistor.

The microcircuit is actively used not only in network UPS circuits, but also in homemade voltage converters. The diagram of such a voltage converter is shown below. The design is simple and can be easily replicated by radio amateurs.

The circuit uses powerful N-channel field-effect switches of the IRFZ44 series, although more powerful field-effect transistors IRF3205 can be used to increase the power of the voltage supply.

The core transformer was used from a switching power supply for 12 volt halogen lamps. All standard windings were removed and new ones were wound in their place. Thus, the primary winding contains 2x5 turns, a wire with a diameter of 1-1.5 mm. For more convenient winding, I used 6 strands of thinner wire (the diameter of each strand is 0.3 mm), i.e. the total diameter is 1.8mm.

The secondary winding (boost) is wound on top of the primary. In advance primary winding insulated with 10 layers of transparent tape. The winding contains 85-90 turns, the wire has a diameter of 0.2 mm, there is no need to install interlayer insulation.

In my case, the PN was made to power fluorescent lamps, so the secondary winding of the transformer contains 145 turns.

Transistors must be installed on the heat sink through insulating gaskets. A 40-watt fluorescent lamp was used as a load and the heat dissipation on the transistors was normal. The maximum PN power reaches up to 80 watts, while the circuit will consume up to 11-12 Amperes.

List of radioelements

Designation	Type	Denomination	Quantity	Note	Shop	My notepad
	Power Driver and MOSFET	IR2153	1			To notepad
VT1, VT2	MOSFET transistor	IRFZ44	1			To notepad
VD1	Rectifier diode	UF4007	1			To notepad
C1	Capacitor	3.3 nF	1			To notepad
C2	Electrolytic capacitor	10 µF	1			To notepad
R1, R2	Resistor	22 Ohm	1			To notepad
R3	Resistor	15 kOhm	1

Hello everybody!

Background:

On the site there is a diagram of audio frequency power amplifiers (ULF) 125, 250, 500, 1000 Watt, I chose the 500 Watt option, because in addition to radio electronics, I am also a little interested in music and therefore I wanted something of better quality from ULF. The circuit on TDA 7293 did not suit me, so I decided on the option field effect transistors 500 watts. From the beginning I almost assembled one ULF channel, but work stopped for various reasons (time, money and unavailability of some components). As a result, I bought the missing components and completed one channel. Also via certain time and assembled the second channel, set it all up and tested it on a power supply from another amplifier, everything worked at the highest level and I really liked the quality, I didn’t even expect it to be like this. Special, huge thanks to the radio amateurs Boris, AndReas, Nissan who throughout the entire time I assembled it, helped in setting it up and in other nuances. Next, it became a matter of the power supply. Of course, I would like to make a power supply on a regular transformer, but again everything stops on the availability of materials for the transformer and their cost. Therefore, I decided to stick with the UPS.

Well, now about the UPS itself:

I used IRFP 460 transistors, since I did not find those indicated on the diagram. I had to install the transistors the other way around, turning them 180 degrees, drill more holes for the legs and solder them together with wires (you can see it in the photo). When I made the printed circuit board, I only realized later that I couldn’t find the transistors I needed as in the diagram, so I installed the ones I had (IRFP 460). Transistors and output rectifier diodes must be installed on a heat sink through heat-insulating gaskets, and the radiators must also be cooled with a cooler, otherwise the transistors and rectifier diodes may overheat, but the heating of the transistors, of course, also depends on the type of transistors used. The lower internal resistance field grass, the less they will warm up.

Also, I have not yet installed a 275 Volt Varistor at the input, since it is not in the city and neither is mine, and it is expensive to order one part via the Internet. I will have separate electrolytes at the output, because they are not available for the required voltage and the standard size is not suitable. I decided to put 4 electrolytes of 10,000 microfarads * 50 volts, 2 in series in the arm, in total in each arm it will be 5000 microfarads * 100 volts, which will be completely enough for the power supply, but it is better to put 10,000 microfarads * 100 volts in the shoulder.

The diagram shows a resistor R5 47 kOhm 2 W for powering the microcircuit, it should be replaced with 30 kOhm 5 W (preferably 10 W) so that under a heavy load, the IR2153 microcircuit has enough current, otherwise it may go into protection against a lack of current or will pulsate tension which will affect the quality. In the author’s circuit it is 47 kOhm, which is a lot for such a power supply. By the way, resistor R5 will heat up very much, don’t worry, the type of circuits with IR2151, IR2153, IR2155 power supply is accompanied by strong heating of R5.

In my case, I used an ETD 49 ferrite core and it fit very hard on the board. At a frequency of 56 KHz, according to calculations, it can deliver up to 1400 watts at this frequency, which in my case has a margin. You can use a toroidal or other shaped core, the main thing is that it is suitable in terms of overall power, permeability and, of course, there is enough space to place it on the board.

Winding data for ETD 49: 1 = 20 turns with 0.63 V wire 5 wires (winding 220 volts). 2 = main power bipolar 2*11 turns of 0.63 V wire 4 wires (winding 2*75-80) volts. 3 = 2.5 turns of wire 0.63 in 1 wire (winding 12 volts, for soft start). 4 = 2 turns of wire 0.63 in 1 wire (additional winding for powering preliminary circuits (timbre block, etc.). The transformer frame needs a vertical design, I have a horizontal one, so I had to fence it. It can be wound in a frameless design. On other types you will have to calculate the core yourself, you can use the program that I will leave at the end of the article.In my case, I used a bipolar voltage of 2 * 75-80 volts for a 500 watt amplifier, why less, because the amplifier load will not be 8 Ohms but 4 Ohms.

Setup and first launch:

When starting the UPS for the first time, be sure to install a 60-100 watt light bulb in the gap between the network cable and the UPS. When you turn it on, if the light does not light, then it’s good. At the first start-up, short-circuit protection may turn on and the HL1 LED will light up, since the electrolytes have a large capacity and at the moment of switching on take a huge current, if this happens, then you need to twist the multi-turn resistor clockwise until it stops, and then wait until the LED goes out off state and try to turn it on again to make sure the UPS is working, and then adjust the protection. If everything is soldered correctly and the correct part ratings are used, the UPS will start. Next, when you have made sure that the UPS turns on and there is all voltage at the output, you need to set the protection threshold. When setting up protection, be sure to load the UPS between the two arms of the main output winding (which is used to power the ULF) with a 100-watt light bulb. When the HL1 LED lights up when turning on the UPS under load (100-watt light bulb), you need to turn the variable multi-turn resistor R9 2.2 kOhm a little counterclockwise until the power-on protection is triggered. When the LED lights up when turned on, you need to turn it off and wait until it goes out and gradually turn it clockwise in the off state and turn it on again until the protection stops working,
You just need to turn it little by little, for example 1 turn and not 5-10 turns at once, i.e. turned it off, tweaked it and turned it on, the protection worked - again the same procedure several times until you achieve the desired result. When you set the desired threshold, then, in principle, the power supply is ready for use and you can remove the light bulb by mains voltage and try to load the power supply active load Well, for example, 500 watts. There, of course, you can play with the protection as you like, but I don’t recommend doing tests with a short circuit, as this can lead to a malfunction, even though there is protection, a certain capacitance will not have time to discharge, the relay will not respond instantly or will get stuck and may be a nuisance. Although I accidentally and not accidentally made a number of short circuits, the protection works. But nothing is eternal.

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For a long time I was interested in the topic of how you can use the power supply from a computer to power a power amplifier. But remaking a power supply is still fun, especially a pulsed one with such a dense installation. Even though I’m used to all sorts of fireworks, I really didn’t want to scare my family, and it’s dangerous for myself.

In general, the study of the issue led to quite simple solution, which does not require any special details and practically no adjustment. Assembled, turned on, works. Yes, I wanted to practice etching printed circuit boards using photoresist, since in Lately modern laser printers They became greedy for toner, and the usual laser-iron technology did not work out. I was very pleased with the result of working with photoresist; for the experiment, I etched the inscription on the board with a line 0.2 mm thick. And she turned out great! So, enough preludes, I will describe the circuit and process of assembling and setting up the power supply.

The power supply is actually very simple, almost all of it is assembled from parts left over after disassembling a not very good pulse generator from a computer - one of those parts that are not “reported” on. One of these parts is a pulse transformer, which can be used without rewinding in a 12V power supply, or converted, which is also very simple, to any voltage, for which I used Moskatov’s program.

Switching power supply unit diagram:

The following components were used:

driver ir2153 - microcircuit, used in pulse converters for power supply fluorescent lamps, its more modern analogue is ir2153D and ir2155. In the case of using the ir2153D, the VD2 diode can be omitted, since it is already built into the chip. All 2153 series microcircuits already have a built-in 15.6V zener diode in the power circuit, so you shouldn’t bother too much with installing a separate voltage stabilizer to power the driver itself;

VD1 - any rectifier with reverse voltage not lower than 400V;

VD2-VD4 - “fast-acting”, with a short recovery time (no more than 100ns) for example - SF28; In fact, VD3 and VD4 can be excluded, I did not install them;

as VD4, VD5 - a dual diode from computer unit power supply “S16C40″ is a Schottky diode; you can install any other, less powerful one. This winding is needed to power the ir2153 driver after the pulse converter starts. You can exclude both diodes and winding if you do not plan to remove power of more than 150 W;

Diodes VD7-VD10 - powerful Schottky diodes, for a voltage of at least 100V and a current of at least 10 A, for example - MBR10100, or others;

transistors VT1, VT2 - any powerful field-effect ones, the output depends on their power, but you shouldn’t get too carried away here, just as you shouldn’t remove more than 300 W from the unit;

L3 - wound on a ferrite rod and contains 4-5 turns of 0.7 mm wire; This chain (L3, C15, R8) can be eliminated altogether; it is needed to slightly facilitate the operation of the transistors;

Choke L4 is wound on a ring from the old group stabilization choke of the same power supply from the computer, and contains 20 turns each, wound with a double wire.

Capacitors at the input can also be installed with a smaller capacity; their capacity can be approximately selected based on the removed power of the power supply, approximately 1-2 µF per 1 W of power. You should not get carried away with capacitors and place a capacitance of more than 10,000 uF at the output of the power supply, as this can lead to “fireworks” when turned on, since they require a significant current for charging when turned on.

Now a few words about the transformer. The parameters of the pulse transformer are determined in the Moskatov program and correspond to an W-shaped core with the following data: S0 = 1.68 sq.cm; Sc = 1.44 cm2; Lsr.l. = 86cm; Conversion frequency - 100 kHz;

The resulting calculation data:

Winding 1- 27 turns 0.90mm; voltage - 155V; Wound in 2 layers with wire consisting of 2 cores of 0.45 mm each; The first layer - the inner one contains 14 turns, the second layer - the outer one contains 13 turns;

winding 2- 2 halves of 3 turns of 0.5 mm wire; this is a “self-supply winding” with a voltage of about 16V, wound with a wire so that the winding directions are in different directions, the middle point is brought out and connected on the board;

winding 3- 2 halves of 7 turns, also wound with stranded wire, first - one half in one direction, then through the insulation layer - the second half, in the opposite direction. The ends of the windings are brought out into a “braid” and connected to a common point on the board. The winding is designed for a voltage of about 40V.

In the same way, you can calculate a transformer for any desired voltage. I have assembled 2 such power supplies, one for the TDA7293 amplifier, the second for 12V to power all sorts of crafts, used as a laboratory one.

Power supply for amplifier for voltage 2x40V:

Pulse block 12V supply:

Power supply assembly in housing:

Photo of tests of a switching power supply - the one for an amplifier using a load equivalent of several MLT-2 10 Ohm resistors, included in different sequence. The goal was to obtain data on power, voltage drop and voltage difference in the +/- 40V arms. As a result, I got the following parameters:

Power - about 200W (I didn’t try to shoot anymore);

voltage, depending on load - 37.9-40.1V over the entire range from 0 to 200W

Temperature at maximum power 200W after a test run for half an hour:

transformer - about 70 degrees Celsius, diode radiator without active blowing - about 90 degrees Celsius. With active airflow, it quickly approaches room temperature and practically does not heat up. As a result, the radiator was replaced, and in the following photos the power supply is already with a different radiator.

When developing the power supply, materials from the vegalab and radiokot websites were used; this power supply is described in great detail on the Vega forum; there are also options for the unit with short-circuit protection, which is not bad. For example, during an accidental short circuit, a track on the board in the secondary circuit instantly burned out

Attention!

The first power supply should be turned on through an incandescent lamp with a power of no more than 40W. When you turn it on for the first time, it should flash briefly and go out. It should practically not glow! In this case, you can check the output voltages and try to lightly load the unit (no more than 20W!). If everything is in order, you can remove the light bulb and begin testing.

Good day everyone! I’m looking at diagrams on the Internet of switching power supplies and... And I don’t understand! Perhaps the authors don’t read the “Datasheet” for components, or are they specifically discouraged from assembling a UPS??? . Let's look at the description of IR2153: "an improved version of IR2153 -2155, the list of improvements comes down to protection from interference... We read: the recommended load capacitance is 1000 pF, power 0.650 W (short-term)! So this is the data on IR2151!!! And so we have: IR2153 can control keys with a capacitive load of 1n=1000 pf! Look at the "datasheet" of the keys. IR740 - 1450 pf. One and a half times higher than the recommended one. Now the voltage. The recommended maximum voltage of the keys is 600 v (v)! And the keys have 400 v. Well, yes, this more than 310 V! However, everyone who has come across industrial UPS circuits is well aware that switches are placed at a voltage of at least 600 V. Only in Chinese circuits sometimes burnt-out ones at 500 V appear. I hope I explained it clearly?! As for the switch current and resistance key in the open state. This has little effect on UPS power. Will explain. For a switching power supply, the current is limited by passing through the load and, as a rule, does not exceed 2-3 A per pulse. On impulse! We look at the “datasheet” of the keys and see: at a crystal temperature of 100 degrees. current with a large margin for the IR740. However, in this case this is a minus for the key! The higher the switch current, the longer the switching time (see the graph there) and, of course, the lower the pulse slope, which means the efficiency is less than the maximum (75%). Accordingly, this key will work, but poorly!!! As a result of the above: this combination leads to burnout of both the keys and the driver! Anyone who wants to repeat this scheme is doomed to a handful of burnt parts! I am wrong? Read the comments on similar diagrams. The question follows: you are so smart, so what do you recommend? I recommend it to everyone who wants to have simple assembly UPS, take the diagram from the description and recommendation of the IR Company - IR2153 driver with switches for a current of 4-5 A and max. voltage 600-900 V with a control electrode capacitance of no more than 1000 pF. Example STP5NK600C and similar MOSFET triodes. Now about the resistance in the open state for the key: indeed, the greater it is, the stronger the heating of the key. Some will say less efficiency. In this case, the efficiency is not 100% and the effect of resistance is very small. So what affects efficiency? The efficiency is affected by the UPS circuit itself; for an efficiency of up to 94%, we assemble a resonant UPS. Efficiency up to 75% - with the right keys on the IR2153!. Is this efficiency not enough for you? Hm. What about a pulse transformer? How will it limit efficiency? Has anyone already counted? Losses at frequencies above 50 kHz increase significantly, although losses up to 50 kHz are not zero. Let's look at industrial circuits: winding pulse transformers is a very capricious task; two equally wound transformers have different inductances! What is this? And this is what it is! Each IT has its own optimal operating frequency. How do you like this? That's it - read on and look at the UPS diagrams for TVs, powerful amplifiers, and other factory electrical appliances. Good luck to you!

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In this article, we, together with Roman (author YouTube channel“Open Frime TV”) we will assemble a universal power supply on the IR2153 chip. This is a kind of “Frankenstein” that contains best qualities from different schemes.

The Internet is full of power supply circuits based on the IR2153 chip. Each of them has some positive features, but universal scheme the author has not yet met. Therefore, it was decided to create such a diagram and show it to you. I think we can go straight to it. So, let's figure it out.

The first thing that catches your eye is the use of two high voltage capacitors instead of one at 400V. This way we kill two birds with one stone. These capacitors can be obtained from old computer power supplies without spending money on them. The author specially made several holes in the board for different sizes of capacitors.

If the unit is not available, then the prices for a pair of such capacitors are lower than for one high-voltage one. The capacitance of the capacitors is the same and should be at the rate of 1 µF per 1 W of output power. This means that for 300W of output power you will need a pair of capacitors of 330uF each.

Also, if we use this topology, there is no need for a second decoupling capacitor, which saves us space. And that is not all. The voltage of the decoupling capacitor should no longer be 600 V, but only 250 V. Now you can see the sizes of capacitors for 250V and 600V.

The next feature of the circuit is power supply for IR2153. Everyone who built blocks on it encountered unrealistic heating of the supply resistors.

Even if you put them on during recess, a lot of heat is released. An ingenious solution was immediately applied, using a capacitor instead of a resistor, and this gives us the fact that there is no heating of the element due to the power supply.

The author of this homemade product saw this solution from Yuri, the author of the YouTube channel "Red Shade". The board is also equipped with protection, but the original version of the circuit did not have it.

But after tests on the breadboard, it turned out that there was too little space to install the transformer and therefore the circuit had to be increased by 1 cm, this gave extra space for which the author installed protection. If it is not needed, then you can simply install jumpers instead of the shunt and not install the components marked in red.

The protection current is regulated using this trimming resistor:

Shunt resistor values ​​vary depending on the maximum output power. The more power, the less resistance needed. For example, for power below 150 W, 0.3 Ohm resistors are needed. If the power is 300 W, then 0.2 Ohm resistors are needed, and at 500 W and above we install resistors with a resistance of 0.1 Ohm.

This unit should not be assembled with a power higher than 600 W, and you also need to say a few words about the operation of the protection. She's hiccupping here. The starting frequency is 50 Hz, this happens because the power is taken from an alternator, therefore, the latch is reset at the mains frequency.

If you need a snap-on option, then in this case the power supply for the IR2153 microcircuit must be taken constant, or rather from high-voltage capacitors. The output voltage of this circuit will be taken from a full-wave rectifier.

The main diode will be a Schottky diode in a TO-247 package; you select the current for your transformer.

If you don’t want to take a large case, then in the Layout program it’s easy to change it to TO-220. There is a 1000 µF capacitor at the output, it is sufficient for any currents, since at high frequencies the capacitance can be set to less than for a 50 Hz rectifier.

It is also necessary to note such auxiliary elements as snubbers in the transformer harness;

smoothing capacitors;

as well as a Y-capacitor between the high and low side grounds, which dampens noise on the output winding of the power supply.

There is an excellent video about these capacitors on YouTube (the author attached the link in the description under his video (SOURCE link at the end of the article)).

You cannot skip the frequency-setting part of the circuit.

This is a 1 nF capacitor, the author does not recommend changing its value, but he installed a tuning resistor for the driving part, there were reasons for this. The first of them is the exact selection of the desired resistor, and the second is a slight adjustment of the output voltage using frequency. Now a small example, let’s say you are making a transformer and see that at a frequency of 50 kHz output voltage is 26V, but you need 24V. By changing the frequency, you can find a value at which the output will have the required 24V. When installing this resistor, we use a multimeter. We clamp the contacts into crocodiles and rotate the resistor handle to achieve the desired resistance.

Now you can see 2 prototype boards on which tests were carried out. They are very similar, but the protection board is slightly larger.

The author made the breadboards in order to order the production of this board in China with peace of mind. In the description under the author's original video, you will find an archive with this board, circuit and seal. There will be both the first and second options in two scarves, so you can download and repeat this project.

After ordering, the author was impatiently waiting for the payment, and now they have already arrived. We open the parcel, the boards are packed quite well - you can’t complain. We visually inspect them, everything seems to be fine, and immediately proceed to soldering the board.

And now she is ready. It all looks like this. Now let’s quickly go through the main elements not previously mentioned. First of all, these are fuses. There are 2 of them, on the high and low sides. The author used these round ones because their sizes are very modest.

Next we see the filter capacitors.

They can be obtained from an old computer power supply. The author wound the choke on a T-9052 ring, 10 turns with 0.8 mm wire, 2 cores, but you can use a choke from the same computer power supply.
Diode bridge - any, with a current of at least 10 A.

There are also 2 resistors on the board for discharging the capacitance, one on the high side, the other on the low side.