Ir2110 Mosfet Drivers For Mac
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Ir2110 Schematic
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DID YOU DESIGN IT YOURSELF or are you following someone else's design and need help: OK, go right ahead; you ARE 'troubleshooting'! IS IT A COMMERCIAL PRODUCT (TV, radio, oscilloscope etc.): You want the 'Repair' tag.
Is it a modular system such as: Arduino, Raspberry Pi, Teensy, Beaglebone, ESP8266 etc. And you need help hooking up power, I/O modules, sensors, motors, LED strips etc.: FIRST try one of the board-specific subs; there's a list on our wiki page. Identifying an electronic component in an electronic assembly. For a device you found in a dumpster, or that you want to know how much you should sell for on eBay, please ask in. You can also add a flair tag for your username with your area of expertise by clicking on the 'edit' button at the top. I've had this really annoying problem lately with my IR2110 MOSFET gate drivers. I've killed about 5 of them and I have no idea why.
Ir2110 Datasheet
I can't really afford to lose more. I built the circuit this morning and it worked flawlessly, after about 8 hours I try again. After some troubleshooting I simply couldn't figure out what the problem is. The problem in details is as followed, with the corresponding circuit as:. These are the details: 1) The high-side FET appears to have no problems.
2) There are no shorts between pins. 3) Waveforms are excellent, no weird occurance at either pin.
4) ONLY when the low-side FET gate and source are connected problems occur. (Only drain and source and nothing happens) Said problems: A) Passive current draw doubled B) Sparks when low-side FET is attached C) IR2110 gets significantly hot D) Awful smell and smoke (source unknown) I'm getting pretty desperate as time is running out for me.
Also that's almost 25€ of gate drivers I threw away. I figured that this place has quite experienced people, so if anyone has dealt with this or has an idea what is going on, please let me know! Edit: Regulated 5V also seems to go haywire. There is an LED connected from 5V to ground and it starts to flicker when low-side FET is attached. Edit: Datasheet of load (motor).
The schematic attached to the OP does not show any connection between the IR2110 pin13, and GND. I hope it's there but just got deleted when you prepared the image file for reddit!
I suggest you remove both MOSFETs and use a scope to look at the HO and LO output pins of the IR2110. Verify that your hardware + software is not telling both MOSFETs to turn on at the same time!
I also suggest that you replace the 1N4148s with beefier diodes. Your MOSFETs gate charge is 146 nC. If the gate driver swings the gate node in 40 nsec, the current pulse is 3.6 amperes tall! The poor little 1N4148's peak surge current rating is 2 amps. You're violating a datasheet specification.
Ir2110 Datasheet Pdf
You could try replacing the 10 ohm series resistors with 100 ohm resistors. If that fixes the problem then the IR2110 is the wrong chip to drive these MOSFETs - it's too scrawny (or the MOSFETs are too beefy)! Edit- with low side MOSFET removed from the board, use DVM ohmmeter to measure resistance between PCB hole for gate pin and PCB hole for source pin. Maybe there's a short!
It would explain everything! Also when MOSFET is removed from the board, connect ohmmeter from G to S. The ground connection from the IR2110 got removed somehow, indeed. It's all hooked up correctly in the application. The HO and LO are correct as said in point 3 of the provided details. Meaning all the waveforms and signals are still correct. That's true, I am overcurrenting the diodes, the discharge time seemed so low that I perhaps could attempt to overcurrent it a little bit.
However, I am not noticing any problems with those diodes. Which diodes do you suggest? I will try to increase the gate resistance, I am not particularly switching high frequencies (motor driver) so it shouldn't be a huge problem. More importantly, what do you think killed my poor FET drivers? Transients from the discharge? What if I remove the diode completely?
How to use MOSFET driver? MOSFET driver ciruits are used to drive MOSFETS in high side or low side. Why we need MOSFET driver?
Because MOSFETS are voltage control device and to drive MOSFET the gate capacitance should be charged to operating voltage which is usually between 9-10 volt. One can do it very easily but there is one issue.Hight voltage on drain of MOSFET cause problem by interaction with gate-drain capacitance. This problem is known as miller effect. MOSFET drivers are used to avoid these issues. Page Contents. IR2110 MOSFET DRIVER In many applications, floating circuit is required to drive high side MOSFET. In H bridge used in pure sine wave inverter design 2 MOSFET are used as high side MOSFET and 2 MOSFET are usesd as low side MOSFET. International rectifiers IR2110 MOSFET driver can be used as high side and low side MOSFET driver.
It have a floating circuit to handle to boostrap operation. IR2210 can with stand voltage upto 500v (offset voltage). Its output pins can provide peak current upto 2 ampere. It can also be used to as IGBT driver. IR2210 floating circuit can drive high side MOSFET upto 500 volt. Pin configuration and functionality of each pin is given below.
Ir2110 pin configuration. Pin 1 is output of low side MOSFET drive. pin2 is a return path for low side. It is at same potential as ground VSS pin 13. Because when input to low side at pin 12 Lin is high, LO output will be equal to value of Vcc voltage at pin 3 with respect to Vss and COM pin. When hen input to low side at pin 12 Lin is low, LO output will be equal to value of VSS and its means zero. VDD pin 9 is a logice supply pin.
Its value should be should be between 5 volt. But if you used voltage less than 4 volt it many not give you required result. HIN pin 10 is input signal for high side mosfet driver output.
It may be from microcontroller or any other device. But input signal logic level should be between 4-5 volt. LIN pin 12 is input signal for low side mosfet driver output. It may be from microcontroller or any other device. But input signal logic level should also be between 4-5 volt. SD pin 11 is used a shutdown pin. You can use it for protection circuit.
For example in over voltage or over current protection circuit, if any of these values become greater than specified values, you can give 5 volt signal to shutdown IR2210 driver to stop driving MOSFETS. In return your circuit will stop working. VB pin 6 is used as a high side floating supply or floating circuit to provide floating voltage to high side MOSFET. Bootstrap capacitor used between VB and VS to fully operate high side MOSFET. It plays a very important rule in H bridge of pure sine wave inverter. You should used bootstrap capacitor value 22uf-40uf.
I have successfully designed H bridge after making many changes in H bridge with 33uf/50v bootstrap capacitor value. For more detail I recommend you to go through data sheet of IR2210 and one tip for those readers who are from Pakistan, Don’t purchase IR2110 from Pakistan.Because low quality IR2110 IC’s are available in Pakistan which burn again and again and will make you hopeless.I have already gone through this situation while working on my final year project “Hybrid pure sine wave inverter”.Then I used IR2112 and its works perfectly. Because IR2212 and I2110 both are almost same and their pin out are same.I recommend you to use IR2112 also in your project. I want to design a micro controller based single phase H-bridge inverter.
The whole circuit is made of PIC 16F877A, two IR2110 MOSFET driver, four IRF840 power MOSFETs plus the snubber circuits. I want to get pure 220V (Vrms) and 50HZ sinusoidal signal from an H-bridge after it is filtered.
I write two 50HZ square wave (one for Low side and one for High side), which are 180 degree out of phase (Logic inputs to the H-bridge) to the first half of the H-bride and two PWM signal (5KHZ which are square wave), (one for Low side and one for High side), not simultaneously ON for both sides to the next half of the H-bridge using MikroC code. But I can’t get pure sinusoidal signal. What shall I do?