Using the high-low side driver IR2110 - explanation and plenty of example circuits. If you've had failures with IR2110 and had driver after driver, MOSFET after MOSFET get damaged, burn and fail, I'm pretty sure that it's due to you not using gate-to-source resistors, assuming of course that you designed the IR2110 driver stage. DC/AC Pure Sine Wave Inverter Jim Doucet. Typical Connection for IR2110 MOSFET Driver. New Sine Wave Oscillator Circuit Diagram. The gate drive requirements for a power MOSFET or IGBT uti. Block Diagram of the IR2110 HIGH SIDE CMOS. It comprises a drive circuit for.
The motor won't run until change the circuit with 12V on VDD, Lin, and Hin. After i do that (run the motor for a while) i able to control the motor with 5V vdd, 5V Lin, and PWM (5V) to the Hin. I have no idea what is going on, is it from the improper capacitor value? Hi, You have to use a fast switching diode at the bootstrap. So, switch to 1N5818 as the first diagram shows.
When i power up the circuit the motor run slowly (much slower than before) but when i touch the Drain of the high side MOSFET with my finger and my foot is on the floor the motor runs as it should run, but when i pull up my feet from the floor the motor run slow again. Then i realize i haven't connect the gnd from the microcontroller to power circuit GND. But when i connect the gnd (from uC) to GND (from power circuit), the motor totally shut down. I think the problem is in grounding or i confused how to use two different power supply to run the circuit. Can you help me to see is there anything wrong from my circuit? Hi, The signal coming from AVR is at 5v level. Connect pin 9 (VDD) to +5v instead of 12v.
A faulty IC can give unstable output and may blow up the MOSFET or other components in the circuit. In this tutorial, the method to test the IR2110 IC is discussed. As in accordance to the pin configuration of IR2110, the SD (shutdown) pin is used to shutdown the IC.
The capacitor charges to (VCC - Vb)V when the high side MOSFET is on and VS is pulled to ground. When VS is no longer pulled to ground, the capacitor has a potential difference of (VCC - VB)V across it. The capacitor -ve is connected to VS which is the MOSFET source and so, the MOSFET gate is driven with a voltage higher than MOSFET source by as much as (VCC - VB)V. Of course the capacitor must be large enough that the potential difference across it doesn't drop too low for the MOSFET drive.
But it does work, I saw the car light go on and of with a slight delay compared to the pin 13 LED on the Arduino, this is because it takes some time for the bulb to heat up and cool down. Connecting external power source Conclusion The IR2110 is a cheap IC and can be used for high side driving as well a making half an H-bridge. However, I found it rather confusing for the datasheet to have the IC up side down, this is not how I use my ICs. In the near future I will be working on the IR2125 gate driver. It looks to be more intuitive in using as a single gate driver. Videos Author Posted on.
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.
H bridge is more complicated to handle than other dc to dc converter methods.H bridge have many applications in inverters, switch mode power supplies. AC motor drivers, DC motor drivers, direction control of motors and many others. H bridge consists of four switches. These switches can be transistor, thyristors and MOSFETS. I have used MOSFETS in H bridge designing for pure sine wave inverter. I have used IRF840 MOSFET in H bridge due to it high current and voltage handling capability.you can check its data sheet for more information about it. HOW H-BRIDGE WORK Lets take an example to understand basics to H bridge.Figure Below shows a H bridge which consists of four mosfets Q1, Q2, Q3 and Q4.I have also connected two switches S1 and S2.
When I measured my old inverter's base pin for the high side it said 60v @ 60 Hz and the Low side was 9V @ 60 Hz. How is the 60v base generated?? I understand i need to return to college, its just were moving this winter to florida, so im waiting till i get there before i start school again. Ok, well, i have rebuilt the circuit (again) on a pref board, and it works! However, i am getting 6.01v Lo and a 5.38v Ho using.33 uF ceramic's for Bootstrap and 12v Vcc, 3.3Vdd & my PWM is 2.34v (2n222 @ 5v & 1.5vPwm In) @ 400hz currently i dont have many parts laying around, so my values are most likely wrong. I dont quite understand how the bootstrap cap's & floating supplies work just yet. On my old inverter, how does it produce a 60v Ho that drives the 2 high side mosfets?
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).
Diode for the bootstrap capacitor The bootstrap capacitor In this circuit I use capacitors in pairs, an electrolytic for capacity at 47uF and a ceramic at 0.47uF for low ESR, you can also use a single tantalum capacitor if you want. I have tried building the circuit without the electrolytic capacitor but it didn’t work. Here I place the bootstrap capacitors, its negative is connected to VS and the drain of the mosfet, the positive to VB to charge the gate when needed.
It will get hot no doubt. Try buffering each output of the 2110 with a npn-pnp emitter follower - this will help enormously to stop RF noise getting back into the 2110 also at 100kHz your gate drive must be close to the fets, there must be minimum inductance in the power loop of fets else the mid point will go below gnd when the upper fet turns off and possibly destroy the 2110 - they are fragile devices. - - - Updated - - - It also appears you have very little solid decoupling on your main converter. You really need to build that circuit with a MUCH better layout.
Hoping to hear from you to help me to resolve this matter asap and looking forward to see a bipolar square waveform on the left side of full bridge circuit. Regards dd77. Don't try to keep the high side MOSFET on for more than a few milliseconds. The high-side capacitor will drain, and the MOSFET will start heating. In your other thread, you were talking about low-side current sensing, but since you're using a high-side driver for four N-ch MOSFETs, you will have to PWM your high-side MOSFETs, and you will have problems trying to sense current on the low side, as the current being recirculated through the diode of the high-side MOSFET will not be accounted for.
Here are the schematic for the test circuit: it goes well when i push on-off the Hin with a switch, the low side MOSFET is always ON so i connected the Lin directly to the 12V supply. The DC motor could run when the switch ON for about 4 second if i keep push the Sw1 (until the boostrap capacitor run out). And if i periodically push and release the push button (to generate handmade PWM) the motor keep running. The problem come up when i want to control the PWM with my microcontroller (ATmega8535). The schematic are below: Still, the Lin is directly connected to vcc (5V) from microcontroller power suppy so it should always ON, and the Hin is connected to pwm signal generated by the microcontroller.
Check the diode D7 and capacitor C12 to see if they are okay. What is the voltage rating of the capacitor you used?
Unpleasant things will happen.
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.
The rail on the right will be +5V for the logic power supply of the IC and comes from the Arduino. Ground on both rails will be connected together. Four pins on the IC will be connected to ground. • COM: Ground pin for the IC • SD: Error pin, not used in this tutorial • VSS: Ground level for the logic input signal • LIN: Logic input signal for the low side mosfet Connecting the ground rails Diode for the bootstrap capacitor A diode will charge the bootstrap capacitor and prevent discharging when VB is high.
Hi Since I have built a full bridge circuit which is exactly same to the attached diagram. I have managed to get high and low output of square waveforms and I am pretty happy with this.
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It is important that the ground of the Arduino is shared with that of the rest of the circuit. Otherwise the +5V and the digital output pin #13 can’t complete a circuit path of their own and won’t be able to power and signal the IC. Hooking up the Arduino The Arduino is powered by an external power brick.
Hi, I'm new here & I've been working with electronics for quite a few years now but have never been to college for it yet (Very soon). I am trying to build a Microcontroller controlled variable freq. (0-20khz) 120v signal generator and have ran into problems with getting an output from the high side of the IR2110. Ultimately I will be using 2x IR2110's arranged as a Full Bridge.
The capacitor needs to be charged up to between 10V and 20V to be able to switch the gate of the mosfet propperly. When the mosfet is off, the gate is floating and VS (the negative of the capacitor) pulles it down to ground. The VSS at 12V can now charge the positive side of the capacitor at VB through the diode. Then when it is time to turn the mosfet on, the IC only has to connect VB to HO together and the gate is automaticaly charged at drain+12V, turning it on. Diode for the bootstrap capacitor The bootstrap capacitor In this circuit I use capacitors in pairs, an electrolytic for capacity at 47uF and a ceramic at 0.47uF for low ESR, you can also use a single tantalum capacitor if you want. I have tried building the circuit without the electrolytic capacitor but it didn’t work. Here I place the bootstrap capacitors, its negative is connected to VS and the drain of the mosfet, the positive to VB to charge the gate when needed.
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IR2110/IR2113 HIGH AND LOW SIDE DRIVER Features Product Summary Floating channel designed for bootstrap operation VOFFSET ( IR2110, Outputs in phase with inputs 10 ns Packages Description The IR2110/IR2113 are high voltage, high speed power MOSFET and IGBT drivers with independent high and low side referenced output channels, buffer stage designed for minimum driver cross-conduction. Propagation delays are matched to simplify International Rectifier Original. 284.04 Kb IR2110 application noteAbstract: IR2113 APPLICATION NOTE Data Sheet No. IR2110/IR2113 (S) HIGH AND LOW SIDE DRIVER Features, inputs VOFFSET ( IR2110) (IR2113) 500V max. IO+/- 2A / 2A VOUT 10 - 20V ton/off (typ.) 120 & 94 ns Delay Matching 10 ns Packages Description The IR2110/IR2113 are high voltage, high speed power MOSFET and IGBT drivers with independent high and low side, Lead SOIC IR2110/IR2113 dized monolithic construction. Logic inputs are comIR2110S/IR2113S patible International Rectifier Original. 175.67 Kb 10KF6Abstract: IR2110 application note Data Sheet No.
Remember to add them. Hope this helps. Hi, Not 100% sure, but I think, when using a high-low side driver, both high side and low side MOSFETs can not be on at the same time. So, that may be your problem as LIN is connected to VCC. I'm also not sure if Proteus simulates high-low side drivers properly. I'd suggest that you try the circuit practically on a bread board.
Anonymous Hi Tahmid, I am now adding a post from edaboard. Verint edge dvr. I added a pic that includes 4 gate signals from TL494.
In your other thread, you were talking about low-side current sensing, but since you're using a high-side driver for four N-ch MOSFETs, you will have to PWM your high-side MOSFETs, and you will have problems trying to sense current on the low side, as the current being recirculated through the diode of the high-side MOSFET will not be accounted for. You will need to sense current on the high side. The easiest way to do that will be to use a Hall-effect sensor. Click to expand.In regard to current sensing, it is not related to this project as I am doing two different projects. For current sensing circuit, I hold it for now and concentrate on full bridge circuit. However thank you for your inputs. I have discovered the waveforms on the resistor appear to be different!
Try with this circuit, I think this should work: Hope this helps. ---------- Post added at 12:19 ---------- Previous post was at 12:17 ---------- C1, C3 - 22u C2, C4 - 100n C5 - 100u R4, R5 - 22R The rest of the resistors are in kilo-ohms. Hello Tahmid, thx for your response. Actually, i gave up trying with VDD 5v, so i decided to use vdd = 12V and convert my PWM level to 12V with hex buffer (use pull up resistor to 12V) and with those configuration i able to modulate the load supply voltage with PWM from my micro controller. I'm done testing with half bridge configuration in my breadboard and now i just started to build up the full bridge configuration in my breadboard.
In a permanent circuit a resistor of about 10 Ohms should be between the HO pin and gate to remove inductive spikes caused by the inrush current. This could cause damage to the mosfet and the gate driver. The drain of the mosfet is connected to the positive of the +12V rail. This will provide the actual power to the lamp.
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.
I want to test the circuit of ir2110 before connected the MOSFET (H-bridge).I've followed the circuit in this post,but doesn't connect the MOSFET. I got the signal from LO, but the HO was 10-12 constant. May I ask you for my understand. If I didn't connect the MOSFET, the Vs(pin5) of ir2110 have to connected to ground,that right? I can connect Vs to ground directly or have to connect the resistance before ground.
Powering up the logic Adding the +12V car light I have used some cut-off resistor legs to stick into the breadboard so the alligator clips have something to hold on to. This is not the best way but it will have to do for now. Some day in the future I will make some custom wires for these kinds of situation. Adding the car light Connecting the external power source The same thing goes for the external power supply.
Then when it is time to turn the mosfet on, the IC only has to connect VB to HO together and the gate is automaticaly charged at drain+12V, turning it on. Diode for the bootstrap capacitor The bootstrap capacitor In this circuit I use capacitors in pairs, an electrolytic for capacity at 47uF and a ceramic at 0.47uF for low ESR, you can also use a single tantalum capacitor if you want. I have tried building the circuit without the electrolytic capacitor but it didn’t work.