EGS002 Datasheet, Circuit Diagram Explained

Hello,
Would it be a good idea to put blocking zener diodes in parallel with the gate-drain resistors?
Regards.

podrías pasarme algún diagrama para ésta targeta egs002

Can I directly take the VFB input from ac line terminal without rectifying? many schematics show it using rectifier then inserting it to VFB. if my h bridge gets less than 400v? like 320/350, can that cause issue?

Hi everyone, I am working on a single phase inverter project using the EGS002 / EG8010 driver board.

I followed the typical application circuit from the datasheet/manual which shows a high voltage DC bus, around 400 V and a voltage feedback circuit for the AC output.

Because of that, I originally made my VFB voltage feedback circuit using that higher voltage level.

But, in my actual prototype test, I am now using only 12 V DC on the H bridge.

My question is: could this make the EG8010 think that the VFB pin is too low, almost as if it were grounded and so trigger the undervoltage protection after a few second then?

At first, I used the feedback resistor value shown in the reference circuit, around 200 kΩ.

Since I became aware that my test voltage was much lower than the voltage used in the datasheet example, I tried replacing that resistor with 10 kΩ to increase the feedback voltage going to VFB.

But, the circuit still did not work correctly, so now I am not sure if:
1. my feedback divider is still not giving correct voltage to the VFB pin
2. I am sampling the voltage from wrong point of the circuit
3. the EGS002 expect feedback from the final AC output after transformer/filter, not directly from the low voltage H bridge side
4. just changing the 200 kΩ resistor to 10 kΩ is not enough because the whole VFB feedback network needs to be recalculated.

From what I understand, EG8010 expect VFB signal to be around correct internal reference level during operation.

If the feedback voltage is too low, then it may spot undervoltage and shut down the SPWM outputs.

Could someone help me understand correct way to design VFB feedback circuit when testing H bridge with only 12 V DC then?

What voltage should I measure at the VFB pin during normal operation and how should I figure out the resistor divider for a low voltage test setup?

Any doable solution or correction would be very helpful, thanks in advance…

Hello
Can 220 volts be connected directly to pins 5 and 9?

Can the EGS8010 also support transformerless design. I could not find it on the datasheet

Eu não entendi de onde vêm os 400 volts e de onde saem da placa os 220 AC! O restante ficou magnificamente ótimo.

I want to generate a pure sinusoidal waveform using Arduino to create a spwm signal. I have also built the circuit in Proteus. But the output may be shows a square wave and it is not stable.
I saw your full H-bridge inverter circuit . I mainly built that circuit, but I did not use BJT. I also use a LC(C=4.7uF and L=2mH) filter and a 12V/220V transformer.

In my project, I need to demonstrate both 50 Hz and 60 Hz. If I use modules, the main purpose of the project will not be fullfilled. I really don’t understand what to do now. If the software implementation is already in such bad condition, I don’t know what the hardware situation will be like. my arduink code is- #include
#include

// Sine Table – 50 samples for half wave
int sineTable[] = {0, 25, 50, 75, 99, 122, 144, 165, 184, 201, 216, 228, 238, 245, 250, 253, 254, 252, 248, 241, 232, 221, 208, 193, 176, 158, 139, 119, 98, 77, 56, 35, 14};

volatile int index = 0;
volatile boolean halfWave = true;

void setup() {
pinMode(9, OUTPUT);
pinMode(10, OUTPUT);

// Timer 1 configuration for high speed PWM
TCCR1A = 0b10100001; // Phase Correct PWM
TCCR1B = 0b00000001; // No prescaling

// Timer 2 for Sine frequency (50Hz)
TCCR2A = 0b00000010; // CTC Mode
TCCR2B = 0b00000100; // 64 prescaler
OCR2A = 62; // Approx 50Hz timing
TIMSK2 |= (1 <= 32) {
index = 0;
halfWave = !halfWave;
}
}

void loop() {
// Main code stays empty
}

Good evening sir. thanks for your teachings.
my question is, can egs002 work with 16×2 LCD?

what do i do to make it work properly on heavy loads,because i have a strong transformer but it keeps of blinking 2 times and shut off

saya sudah menghabiskan 4 modul egs.modul egs cuma cocok buat low frekuensi.untuk hing frekuensi out 220volt tapi untuk HZ keluar 90hz udah berbagai cara tetap di atas 60hz

hi where do you get the 400dc volt from . a Boost converter or ?

for a full bridge 12v design what should be the transformer voltage

Hi, I’m from Russia. My name is Valera. I have a problems with SGE002. I have to got AC220v from use DC12v use this device, but I have got only out 110-115 v AC, I have used different transformers like 7/220 and 12/220 , and have same results. I would like to know where is fault. This device don’t have a jumper 110v to 220v. I ‘ve tried to change resistors ih VFB, no results.
Sincerely yours

how to parallel the MOSFETs in 3x and do I need to put resistor 10k ohms and 10 ohms each MOSFETs that are parallel or it is parallel only the MOSFETs? like is it does the MOSFETs need snubber circuit

Hello Swag,

It is a new try for me to use EGS002 to make an inverter from 190VDC to 120VAC. I have met with difficulties: The driving signals for the four MOSFETs were correct as shown in the Application Notes, but AC output was swinging between 30-40V shown on an external monitoring voltmeter while the module-driven LCD display showed about 220V. During the above period an AC indicating LED bulb connected to the output was lighting but only for a couple of seconds, then the EGS002 flashed its red LED for “overvolage” alerting and stop outputing AC, followed by alerting “undervoltage”. This process would repeat for 4-5 cycles then stagged on undervoltage status. It could went into the same process by recycling the power. During this trial the MOSFETs V1,V3(driven by 2HO,2LO) broke twice to short-circuited, and the EGS003 itself also broke twice with its 2HO and 2LO respectively failed to output correct driving signals.

Could you or anyone else give me some help?

Fred
Canada

Hello, I tell you that I wanted to use this module to repair a 4kw inverter, and I have only been able to put a charge of up to 1kw, and I need at least 2 kw. The issue is that when I put a 1700 kw charge the 220v voltage at the output fluctuates between 150 and 220v, it does not remain stable, I check the VFB pin and it maintains 2.8v without variation, and the LED on the card does not reflect any type of error

Hello Mr. Swagatam, I would like to ask if I can use this module to create a frequency converter. I live between two countries with different frequencies: one 50Hz at 220V and the other at 60Hz at 120V (Brazil and Paraguay). So, I would rectify 220V and use the transformerless configuration with 120V output. My question is about the input voltage, which would be close to 300V, and also about the feedback circuit to control the output voltage. One project is for 80W, the other for 500W or 1000W. I appreciate any help! Thank you very much!

hi Swagatam, I am trying to build a 2nd a inverter using EGS002 and mosfets IRF3205. I intend using 12 mosfets and I understand the IR2110s is not capable of driving the mosfets. I need a totem pole circuit to drive the . Please help me with a totem pole circuit.

Dear Eng. Swagatam
I am profficanal maintenance for many electronic modern devices. There is other method without a transformer used in many devices for example UPS type APC. The designer used four Electra Coil instead of transformer and used IGBT full-bridge and two coil for each side, the control circuit is complex and 50Hz accurate pure sineware with capacitors connected for each side of bridge and output. can you please explain about this method and practical circuit because I want to build it to supply for some sentific devices.
my sincerely

Hi Swagatam, i have a mosfet bridge board i extracted from a dead Victron 24v 5000w inverter and i want to use it with EGS002. The mosfet bridge board has gate driver IC’s HIP4082IPZ. Kindly help me with a diagram on how to go about it. Thanks in advance.
Darlington