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Ir2110 Mosfet Driver Circuit Diagram

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Saturday, 7 January 2017

Jan 20, 2013 Using the high-low side driver IR2110 - explanation and plenty of example circuits. Can i use single ir2110 and single sg3525 to drive h-bridge ' 4 mosfet' and i want full circuit diagram of drive circuit of h-bridge. I have struggled with buck configuration of IR2110 Mosfet driver. In the internal circuit diagram of IR2110, the low side and high side blocks are separated with a dotted line for simplicity. The upper half circuit works for driving high side MOSFET and lower half is for driving the low side MOSFET. As in accordance to the pin configuration of IR2110, the SD (shutdown) pin is used to shutdown the IC. TL494 Tesla Coil Drive Circuit Diagram. In the second version, this work, which is a big tesla bobbin, is a buss but it gets bigger spark. The power transistors used IR2110 MOSFET driver instead of transistor to enhance the output of TL494 IGBT (instead of IRFP054N can be used).

Using the high low side driver IR2110 explanation and plenty of example circuits


In many situations, we need to use MOSFETs configured as high-side switches. Many a times we need to use MOSFETs configured as high-side and low-side switches. Such as in bridge circuits. In half-bridge circuits, we have 1 high-side MOSFET and 1 low-side MOSFET. In full-bridge circuits we have 2 high-side MOSFETs and 2 low-side MOSFETs. In such situations, there is a need to use high-side drive circuitry alongside low-side drive circuitry. The most common way of driving MOSFETs in such cases is to use high-low side MOSFET drivers. Undoubtedly, the most popular such driver chip is the IR2110. And in this article/tutorial, I will talk about the IR2110.
You can download the IR2110 datasheet from the IR website. Here's the download link:
www.irf.com/product-info/datasheets/data/ir2110.pdf
First let's take a look at the block diagram and the pin assignments and pin definitions (also called lead assignments and lead definitions):

Fig. 1 - IR2110 block diagram (click on image to enlarge)

Fig. 2 - IR2110 Pin/Lead Assignments (click on image to enlarge)

Fig. 3 - IR2110 Pin/Lead Definitions (click on image to enlarge)
Notice that the IR2110 comes in two packages – 14 pin through-hole PDIP package and the 16-pin surface mount SOIC package.
Now let's talk about the different pins.

VCC is the low-side supply and should be between 10V and 20V. VDD is the logic supply to the IR2110. It can be between +3V to +20V (with reference to VSS). The actual voltage you choose to use depends on the voltage level of your input signals. Here's the chart:

Fig. 4 - IR2110 Logic '1' Input Threshold vs VDD (click on image to enlarge)
It is common practice to use VDD = +5V. When VDD = +5V, the logic 1 input threshold is slightly higher than 3V. Thus when VDD = +5V, the IR2110 can be used to drive loads when input '1' is higher than 3 point something volts. This means that it can be used for almost all circuits, since most circuits tend to have around 5V outputs. When you're using microcontrollers the output voltage will be higher than 4V (when the microcontroller has VDD = +5V, which is quite common). When you're using SG3525 or TL494 or other PWM controller, you are probably going to have them powered off greater than 10V, meaning the outputs will be higher than 8V when high. So, the IR2110 can be easily used.
You may lower the VDD down to about 4V if you're using a microcontroller or any chip that gives output of 3.3V (eg dsPIC33). While designing circuits with the IR2110, I had noticed that sometimes the circuit didn't work properly when IR2110 VDD was selected as less than +4V. So, I do not recommend using VDD less than +4V.
In most of my circuits, I do not have signal levels which have voltages less than 4V as high and so I use VDD = +5V.
If for some reason, you have signals levels with logic '1' having lower than 3V, you will need a level converter / translator that will boost the voltage to acceptable limits. In such situations, I recommend boosting up to 4V or 5V and using IR2110 VDD = +5V.
Now let's talk about VSS and COM. VSS is the logic supply ground. COM is 'low side return' – basically, low side drive ground connection. It seems that they are independent and you might think you could perhaps isolate the drive outputs and drive signals. However, you'd be wrong. While they are not internally connected, IR2110 is a non-isolated driver, meaning that VSS and COM should both be connected to ground.
HIN and LIN are the logic inputs. A high signal to HIN means that you want to drive the high-side MOSFET, meaning a high output is provided on HO. A low signal to HIN means that you want to turn off the high-side MOSFET, meaning a low output is provided on HO. The output to HO – high or low – is not with respect to ground, but with respect to VS. We will soon see how a bootstrap circuitry (diode + capacitor) – utilizing VCC, VB and VS – is used to provide the floating supply to drive the MOSFET. VS is the high side floating supply return. When high, the level on HO is equal to the level on VB, with respect to VS. When low, the level on HO is equal to VS, with respect to VS, effectively zero.
A high signal to LIN means that you want to drive the low-side MOSFET, meaning a high output is provided on LO. A low signal to LIN means that you want to turn off the low-side MOSFET, meaning a low output is provided on LO. The output on LO is with respect to ground. When high, the level on LO is equal to the level of VCC, with respect to VSS, effectively ground. When low, the level on LO is equal to the level on VSS, with respect to VSS, effectively zero.
SD is used as shutdown control. When this pin is low, IR2110 is enabled – shutdown function is disabled. When this pin is high, the outputs are turned off, disabling the IR2110 drive.
Now let's take a look at the common IR2110 configuration for driving MOSFETs in both high and low side configurations – a half bridge stage.

Fig. 5 - Basic IR2110 circuit for driving half-bridge (click on image to enlarge)
D1, C1 and C2 along with the IR2110 form the bootstrap circuitry. When LIN = 1 and Q2 is on, C1 and C2 get charged to the level on VB, which is one diode drop below +VCC. When LIN = 0 and HIN = 1, this charge on the C1 and C2 is used to add the extra voltage – VB in this case – above the source level of Q1 to drive the Q1 in high-side configuration. A large enough capacitance must be chosen for C1 so that it can supply the charge required to keep Q1 on for all the time. C1 must also not be too large that charging is too slow and the voltage level does not rise sufficiently to keep the MOSFET on. The higher the on time, the higher the required capacitance. Thus, the lower the frequency, the higher the required capacitance for C1. The higher the duty cycle, the higher the required capacitance for C1. Yes, there are formulae available for calculating the capacitance. However, there are many parameters involved, some of which we may not know – for example, the capacitor leakage current. So, I just estimate the required capacitance. For low frequencies such as 50Hz, I use between 47µF and 68µF capacitance. For high frequencies like 30kHz to 50kHz, I use between 4.7µF and 22µF. Since we're using an electrolytic capacitor, a ceramic capacitor should be used in parallel with this capacitor. The ceramic capacitor is not required if the bootstrap capacitor is tantalum.
D2 and D3 discharge the gate capacitances of the MOSFET quickly, bypassing the gate resistors, reducing the turn off time. R1 and R2 are the gate current-limiting resistors.
+MOSV can be up to a maximum of 500V.
+VCC should be from a clean supply. You should use filter capacitors and decoupling capacitors from +VCC to ground for filtering.
Now let's look at a few example application circuits of the IR2110.
Fig. 6 - IR2110 circuit for high-voltage half-bridge drive (click on image to enlarge)

Fig. 7 - IR2110 circuit for high-voltage full-bridge drive with independent switch control (click on image to enlarge)
In Fig. 7 we see the IR2110 being used to drive a full bridge. The functionality is simple and you should understand it by now. A common thing that is often done is that, HIN1 is tied/shorted to LIN2 and HIN2 is tied/shorted to LIN1, enabling the control of all 4 MOSFETs from 2 signal inputs, instead of 4 as shown below in Fig. 8.
Fig. 8 - IR2110 circuit for high-voltage full-bridge drive with tied switch control - control with 2 input signals (click on image to enlarge)
Fig. 9 - Using the IR2110 as a single high-voltage high-side driver (click on image to enlarge)

In Fig. 9 we see the IR2110 being used as a single high-side driver. The circuit is simple enough and follows the same functionality described above. One thing to remember is that, since there is no low-side switch, there must a load connected from OUT to ground. Otherwise the bootstrap capacitors can not charge.
Fig. 10 - Using the IR2110 as a single low-side driver (click on image to enlarge)
Fig. 11 - Using the IR2110 as a dual low-side driver (click on image to enlarge)

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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 properly. NEVER OMIT THE GATE-TO-SOURCE RESISTORS. If you're curious, you can read about my experience with them here (I have also explained the reason that the resistors prevent damage):
http://www.blogspot.com/2016/10/magic-of-knowledge.html
For further reading, you should go through this:

http://www.irf.com/technical-info/appnotes/an-978.pdf
I have seen in many forums that people struggle with designing circuits with IR2110. I too had a lot of difficulty before I could confidently and consistently build successful driver circuits with IR2110. I have tried to explain the application and use of IR2110 thoroughly through explanation and plenty of examples and hope that it helps you in your endeavors with IR2110.

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When using MOSFET as a switch, it can be connected in two switching modes – high side switch and low side switch. Contrary to low side, the high side configuration of MOSFET requires some external circuitry to turn it ON. There are various methods for driving the high side MOSFET. The following three methods are most commonly used to drive a MOSFET as high side switch –
2. Gate Driver IC method
The High and Low side switching of a MOSFET has been already discussed in the following tutorial –
High and Low Side Switching of MOSFET
The use of IR2110 Gate Driver IC has also been discussed in the same tutorial. Now, in this tutorial, Bootstrap Circuit method to drive a high side MOSFET will be discussed.
Components Required –
Fig. 1: List of components required for High Side MOSFET Bootstrap Drive
Block Diagram –
Fig. 2: Block Diagram of High Side MOSFET Bootstrap Driver
A MOSFET Q1 is taken which is connected as a high side switch with reference to the load RL. For driving the MOSFET, a bootstrap circuit is connected at the load of the MOSFET. The bootstrap circuit is a capacitor connected at the gate of the MOSFET. This capacitor is represented as C1 in the circuit diagram. The bootstrap capacitor requires a PWM signal to turn on the MOSFET. The PWM signal is generated from an Arduino board. For proving PWM signal, bootstrap capacitor is connected to the output of an optocoupler (Shown as opt1 in the circuit diagram) which receives PWM by connecting its input pin to the pin 2 of the Arduino. Another PWM signal is required at the gate of the gate of the MOSFET. The signal is received through the output of another optocoupler (Shown as opt2 in the circuit diagram) which receives PWM by connecting its input pin to the pin 3 of the Arduino.
While assembling the circuit, following precautions must be taken care of –
1. The input power supply to the gate must be greater than or equal to the threshold voltage (Vgs(the)) of the MOSFET otherwise, it will not turn ON the MOSFET. For this refer to the datasheet of the MOSFET used.
2. Do not exceed the input voltage (drain voltage and gate voltage) of the MOSFET greater than its breakdown voltage as it can damage the MOSFET.
3. Always use a gate to source resistance to avoid any external noise at the gate and to discharge the parasitic capacitance of the MOSFET. Otherwise, MOSFET can get damaged as this parasitic capacitor will keep on charging and will exceed the limit of the gate to source breakdown voltage.
4. Always use a low value of resistor (10E to 500E) at the gate of the MOSFET. This will solve the problem of ringing (parasitic oscillations) and voltage spike in the MOSFET.
Diagram

Ir2110 Mosfet Driver Circuit Diagram Schematic

5. The diode D1 should have a low forward voltage drop and should sustain a reverse voltage of 24V. The frequency of the circuit is 0.5Hz so a normal diode having 10ms switching speed can work fine.
6. The capacitor used in the circuit must be of higher voltage rating than the input voltage. Otherwise, the capacitor will start leaking the current due to the excess voltage at its plates and can burst out
7. Make sure all the capacitors should be discharged before working on a DC power supply. For this short the capacitors with a screwdriver wearing insulated gloves.
8. Though in the circuit a bleeder resistor could be present but it takes time to get rid the remnant charge from the capacitor, so it is not connected.
9. Use a resistor at the input of optocoupler MCT2E for limiting the input current. Otherwise high current can damage it. Refer the datasheet of the MCT2E optocoupler for checking its technical specifications.
Fig. 3: Image showing circuit connections of High Side MOSFET Bootstrap Driver
The MOSFET (Shown as MOSFET Q1 in the circuit diagram) is connected in high side configuration as the load (Shown as resistance RL) is connected between the source and the ground. This MOSFET cannot be driven by applying a voltage at its gate and drain. It needs an external circuit to turn ON. The MOSFET used in the circuit is IRF840 which requires a gate to source voltage (Vgs) or threshold voltage (Vth) in range from 10 to 12V to fully turn ON. The Bootstrap circuit built using the capacitor C1 and Diode D1 is used to drive this MOSFET. The bootstrap circuit is explicitly shown in the circuit diagram below –
Fig. 4: Circuit Diagram of High Side MOSFET Bootstrap Driver
For isolating the input and output, two optocouplers are used. The isolation is optical as in an optocoupler, the input is a LED (Emitter) and the output is a photo transistor(Detector). The pins 2 and 3 of the optocoupler are the input pins of the LED. The forward voltage of the LED is in between 1.23V to 1.5V. The forward current of the LED must be less than 60 mA. For providing the input logic to the optocoupler a microcontroller is used which generates the PWM signal for this purpose. The microcontroller board used in the circuit is Arduino. The PWM signal is of 5V and the 100E resistance at the input of optocoupler provide a current of 50mA. This resistance saves the optocoupler from high current. The microcontroller generates two PWM signals with a phase difference of 180 degree. So at a time only one of the optocoupler is ON and another one is OFF. The ON time and off time of the optocouplers decides the ON and OFF time of the MOSFET. This time is also used for calculating the value of capacitor used in bootstrap circuit.
Ir2110
The value of the capacitor to be used in bootstrap circuit can be calculated as follow –
The time constant equation for charging the capacitor is
In the above equation capacitor ‘C' will charge and discharge fully through resistor ‘R' in a time equal to time constant ‘T'.
In this circuit time constant is assumed to be 1000 ms and resistance for discharge of the capacitor is assumed to be 220E in value. The value of capacitor now derives as follow –
C = T/5R
C = 1000uF (approx.)
When the circuit is powered on and PWM signal is applied at the input of both the optocouplers, then initially the first optocoupler Opt1 is OFF for 1s and second one is ON for 1s as per the time period of the PWM signal. The ON and OFF time period of the PWM signal is set in program code of the Arduino board. In this state the capacitor C1 starts charging with diode D1 and load RL. This develops a voltage of 12V across the capacitor C1 and at this time the transistor Q1 is in OFF state as it is not getting sufficient voltage which should be greater than threshold voltage (Vth). So at output, zero volt is obtained.
Fig. 5: Image showing charging of Bootstrap Capacitor
In the next cycle the optocoupler opt1 gets ON for 1s and optocoupler Opt2 remains OFF for 1s. The capacitor C1 now tries to maintain the 12V across it and this raises the source voltage to 12V. This makes the diode D1 reverse biased as its cathode voltage is now 24V for maintaining the 12V across the capacitor. The capacitor C1 now starts discharging through optocoupler Opt2 and the gate of the MOSFET Q1 develops 24V. This makes the Vgs of MOSFET Q1 equal to 12V which is sufficient enough to drive it. So, at output, HIGH logic or 12V is obtained. The capaacitor C1 is called bootstrap capacitor as it boosts up the 12V input signal to 24V for driving the high side MOSFET.
Fig. 6: Image showing discharging of Bootstrap Capacitor
So, the optocoupler Opt1 is used for turning On the MOSFET and optocoupler Opt2 turns OFF the MOSFET. At the output, HIGH and LOW logic is obtained for 1 second alternatively. As the process repeats, a square with 50% duty cycle and 0.5 Hz frequency is obtained at the output.
Programming Guide –
The Arduino board is used for generating the PWM in the circuit. There are two PWM signals generated at pins 2 and 3 of the board with a phase difference of 180 degrees. In the Arduino sketch, first the pins 2 and 3 of the board are configured to digital output using pinMode() function within the setup() function. In the loop() function which is meant to iterate infinitely, the pins 2 and 3 are set to digital logic or LOW and HIGH respectively followed by a delay of 0.5 second. The digital logic at the pins 2 and 3 is reversed after the delay and again a delay of 0.5 second is provided. This generates two PWM signals having a frequency of 0.5 Hz and 50 % duty cycle having a phase difference of 180 degree with respect to each other.
Fig. 7: Screenshot of Arduino Code used for High Side MOSFET Bootstrap Driver

Check out the complete code from the code section.

Testing the circuit –
On observing the output waveform on a cathode ray oscilloscope (CRO), the following voltage waveform is observed –
Fig. 8: Graph showing Output Waveform of High Side MOSFET Switch

The output waveform has a frequency of 0.5 Hz and 50% duty cycle. So, the bootstrap circuit is perfectly working to drive the high side MOSFET. The bootstrap circuit designed here has also certain limitations. The circuit is load dependent. As the bootstrap capacitor charges through the load so, a load which consist of diode or any component which blocks the negative voltage at the output cannot be used. For low frequency, a high value of capacitor is needed in the circuit.

Jan 04, 2014 When you install many mods or large textures, animation of loading screen will be stopped sometimes. However, the game will continue to load in the background. You can check it is infinite loading or not by using 'Skyrim Performance Monitor', 'Windows Task Manager' etc. When the memory usage or Disk I/O has changed, game is running. Skyrim nexus safety load. Jan 04, 2014 This mod blocks 'Infinite Loading Screen' bug and game freezing during play. Replacement for Safety Load? - posted in Skyrim Mod Troubleshooting: I was having problems with infinite load screens, so I installed Safety Load (with EnableOnlyLoading set to true), but I had issues where I was getting CTDs when I pressed the escape key. Apparently this is a common issue with Safety Load, and people recommend you use alternatives to Safety Load. SKSE is supposed to come with.

There are also some advantages of this circuit. First, it is a simple circuit built using few components. When such a simple circuit eliminates the requirement of gate driver IC, it reduces the cost of the circuit as well. So, this circuit is not only simple to design, it is also cost effective.
The bootstrap circuit designed in this tutorial can be used in DC to AC converters, induction heating applications and in making a half bride MOSFET circuit.

Mosfet Driver Circuit Diagram

Driver

Ir2110 Mosfet Driver Circuit Diagram Schematic

5. The diode D1 should have a low forward voltage drop and should sustain a reverse voltage of 24V. The frequency of the circuit is 0.5Hz so a normal diode having 10ms switching speed can work fine.
6. The capacitor used in the circuit must be of higher voltage rating than the input voltage. Otherwise, the capacitor will start leaking the current due to the excess voltage at its plates and can burst out
7. Make sure all the capacitors should be discharged before working on a DC power supply. For this short the capacitors with a screwdriver wearing insulated gloves.
8. Though in the circuit a bleeder resistor could be present but it takes time to get rid the remnant charge from the capacitor, so it is not connected.
9. Use a resistor at the input of optocoupler MCT2E for limiting the input current. Otherwise high current can damage it. Refer the datasheet of the MCT2E optocoupler for checking its technical specifications.
Fig. 3: Image showing circuit connections of High Side MOSFET Bootstrap Driver
The MOSFET (Shown as MOSFET Q1 in the circuit diagram) is connected in high side configuration as the load (Shown as resistance RL) is connected between the source and the ground. This MOSFET cannot be driven by applying a voltage at its gate and drain. It needs an external circuit to turn ON. The MOSFET used in the circuit is IRF840 which requires a gate to source voltage (Vgs) or threshold voltage (Vth) in range from 10 to 12V to fully turn ON. The Bootstrap circuit built using the capacitor C1 and Diode D1 is used to drive this MOSFET. The bootstrap circuit is explicitly shown in the circuit diagram below –
Fig. 4: Circuit Diagram of High Side MOSFET Bootstrap Driver
For isolating the input and output, two optocouplers are used. The isolation is optical as in an optocoupler, the input is a LED (Emitter) and the output is a photo transistor(Detector). The pins 2 and 3 of the optocoupler are the input pins of the LED. The forward voltage of the LED is in between 1.23V to 1.5V. The forward current of the LED must be less than 60 mA. For providing the input logic to the optocoupler a microcontroller is used which generates the PWM signal for this purpose. The microcontroller board used in the circuit is Arduino. The PWM signal is of 5V and the 100E resistance at the input of optocoupler provide a current of 50mA. This resistance saves the optocoupler from high current. The microcontroller generates two PWM signals with a phase difference of 180 degree. So at a time only one of the optocoupler is ON and another one is OFF. The ON time and off time of the optocouplers decides the ON and OFF time of the MOSFET. This time is also used for calculating the value of capacitor used in bootstrap circuit.
The value of the capacitor to be used in bootstrap circuit can be calculated as follow –
The time constant equation for charging the capacitor is
In the above equation capacitor ‘C' will charge and discharge fully through resistor ‘R' in a time equal to time constant ‘T'.
In this circuit time constant is assumed to be 1000 ms and resistance for discharge of the capacitor is assumed to be 220E in value. The value of capacitor now derives as follow –
C = T/5R
C = 1000uF (approx.)
When the circuit is powered on and PWM signal is applied at the input of both the optocouplers, then initially the first optocoupler Opt1 is OFF for 1s and second one is ON for 1s as per the time period of the PWM signal. The ON and OFF time period of the PWM signal is set in program code of the Arduino board. In this state the capacitor C1 starts charging with diode D1 and load RL. This develops a voltage of 12V across the capacitor C1 and at this time the transistor Q1 is in OFF state as it is not getting sufficient voltage which should be greater than threshold voltage (Vth). So at output, zero volt is obtained.
Fig. 5: Image showing charging of Bootstrap Capacitor
In the next cycle the optocoupler opt1 gets ON for 1s and optocoupler Opt2 remains OFF for 1s. The capacitor C1 now tries to maintain the 12V across it and this raises the source voltage to 12V. This makes the diode D1 reverse biased as its cathode voltage is now 24V for maintaining the 12V across the capacitor. The capacitor C1 now starts discharging through optocoupler Opt2 and the gate of the MOSFET Q1 develops 24V. This makes the Vgs of MOSFET Q1 equal to 12V which is sufficient enough to drive it. So, at output, HIGH logic or 12V is obtained. The capaacitor C1 is called bootstrap capacitor as it boosts up the 12V input signal to 24V for driving the high side MOSFET.
Fig. 6: Image showing discharging of Bootstrap Capacitor
So, the optocoupler Opt1 is used for turning On the MOSFET and optocoupler Opt2 turns OFF the MOSFET. At the output, HIGH and LOW logic is obtained for 1 second alternatively. As the process repeats, a square with 50% duty cycle and 0.5 Hz frequency is obtained at the output.
Programming Guide –
The Arduino board is used for generating the PWM in the circuit. There are two PWM signals generated at pins 2 and 3 of the board with a phase difference of 180 degrees. In the Arduino sketch, first the pins 2 and 3 of the board are configured to digital output using pinMode() function within the setup() function. In the loop() function which is meant to iterate infinitely, the pins 2 and 3 are set to digital logic or LOW and HIGH respectively followed by a delay of 0.5 second. The digital logic at the pins 2 and 3 is reversed after the delay and again a delay of 0.5 second is provided. This generates two PWM signals having a frequency of 0.5 Hz and 50 % duty cycle having a phase difference of 180 degree with respect to each other.
Fig. 7: Screenshot of Arduino Code used for High Side MOSFET Bootstrap Driver

Check out the complete code from the code section.

Testing the circuit –
On observing the output waveform on a cathode ray oscilloscope (CRO), the following voltage waveform is observed –
Fig. 8: Graph showing Output Waveform of High Side MOSFET Switch

The output waveform has a frequency of 0.5 Hz and 50% duty cycle. So, the bootstrap circuit is perfectly working to drive the high side MOSFET. The bootstrap circuit designed here has also certain limitations. The circuit is load dependent. As the bootstrap capacitor charges through the load so, a load which consist of diode or any component which blocks the negative voltage at the output cannot be used. For low frequency, a high value of capacitor is needed in the circuit.

Jan 04, 2014 When you install many mods or large textures, animation of loading screen will be stopped sometimes. However, the game will continue to load in the background. You can check it is infinite loading or not by using 'Skyrim Performance Monitor', 'Windows Task Manager' etc. When the memory usage or Disk I/O has changed, game is running. Skyrim nexus safety load. Jan 04, 2014 This mod blocks 'Infinite Loading Screen' bug and game freezing during play. Replacement for Safety Load? - posted in Skyrim Mod Troubleshooting: I was having problems with infinite load screens, so I installed Safety Load (with EnableOnlyLoading set to true), but I had issues where I was getting CTDs when I pressed the escape key. Apparently this is a common issue with Safety Load, and people recommend you use alternatives to Safety Load. SKSE is supposed to come with.

There are also some advantages of this circuit. First, it is a simple circuit built using few components. When such a simple circuit eliminates the requirement of gate driver IC, it reduces the cost of the circuit as well. So, this circuit is not only simple to design, it is also cost effective.
The bootstrap circuit designed in this tutorial can be used in DC to AC converters, induction heating applications and in making a half bride MOSFET circuit.

Mosfet Driver Circuit Diagram

Project Source Code

Ir2110 Dead Time


Mosfet Driver Circuit

Project Video





broken image