Gate Driver ICs Forum Discussions
I hope this message finds you well. I am currently in the process of evaluating the IR2109(4)(S) driver for an upcoming project and have a specific inquiry regarding its operational capabilities.
I am interested in determining the maximum frequency at which the IR2109(4)(S) driver can reliably operate. Could you please provide guidance on how I can ascertain this information? Are there any specifications or guidelines available in the datasheet or technical documentation that outline the maximum frequency range for this driver?
Your assistance in providing clarity on this matter would be immensely helpful as it will aid in determining the suitability of the IR2109(4)(S) driver for my application.
Thank you for your attention to this inquiry. I look forward to your response.
Best regards,
Show LessI hope this message finds you well. I am reaching out regarding a couple of questions I have about the datasheet for the IR2109(4)(S).
Firstly, I am curious about the capacitor specifications mentioned in the datasheet. I noticed that polarized capacitors are recommended for certain applications. However, I am interested in exploring the possibility of using non-polarized capacitors instead. Could you kindly provide some insight into whether non-polarized capacitors can be safely substituted for the polarized ones mentioned in the datasheet?
Secondly, upon attempting to calculate the value of the bootstrap capacitor using the provided formula, I encountered an unexpected result. Specifically, when I substituted the given values into the formula, I found that the denominator resulted in a negative value: (Vcc - Vf - VLs - Vmin) = (12V - 1V - 2.35V - 9V) = -0.35V. This negative value raises some concerns and prompts me to seek guidance on how to proceed with determining the appropriate value for the bootstrap capacitor. Could you please provide clarification on whether a negative value in this context is valid, or if there might be an alternative method or consideration to account for in this calculation?
I understand the importance of adhering to recommended component specifications and calculations, but I am curious about any potential flexibility or alternative approaches in these matters. Any guidance or clarification you could offer on these issues would be greatly appreciated.
Thank you very much for your attention to these inquiries. I look forward to hearing from you soon.
Best regards,
Show LessI hope this message finds you well. I am reaching out with a query regarding the connection of pin VSS to pin COM in the IR21094 driver.
Could you kindly confirm whether it is standard practice to connect pin VSS to pin COM in the IR21094 driver? I am seeking clarity on this aspect to ensure the correct configuration and optimal performance of our circuitry.
Your expertise and insights on this matter would be greatly appreciated. Thank you in advance for your assistance.
Best regards,
Show LessHi together,
Is the UVLO from the IR2101S observing the VCC and VB? Out of the block diagram it is not clear.
Can a voltage dip at VCC or VB lead to a shoot trough at the mosfets?
Or are both cases covered by the UVLO?
Regards
Worldwidewire
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I would like to use IMW120R060M1H as a switch for a 400V-200V bidirectional buck-boost circuit, and use 1ED3120MC12H with unipolar supply configuration to drive IMW120R060M1H, the frequency of PWM is 200kHz, is this correct? If it is correct, is there anything that needs attention?
Show LessI have now a working half bridge circuit, and I am driving it with sinusoidal complementary pwm with proper dead time using arduino. Here is an image of a working circuit, the load is a low pass filter with 0.8 Mohm resistor to ground. The IR2104s are soldered to the green breakout boards for testing purposes. Mosfets are IRF520. Input voltage is the same for IR2104 and mosfets: 15v. So the actual circuit seems fine and working.
But when I only change the IR2104, the green breadboard, the HI signal is always low. I have now tested it with some 8 different IR2104 ICs. The circuit works fine again after inserting the 'working' IR2104.
The circuit is pretty much this one:
But with diodes and 1k resistors at the gates of the mosfets like in this circuit:
The bootstrap capacitor is 22uF (50v). Lower capacitance values worked ok for the frequency of the output ac signal above 100hz, but became distorted below that...
The LO output signal is always working fine but the HI side is giving zero volts. Also HIN and LIN are working.
I have tried to solder the ICs with extra care using 350 C temperature and just for 1 or 2 seconds per pin. Also tried heat gun with solder paste 350 C with no help... I always test the ICs after soldering for continuity and I discharge the capacitors between changes...
What am I doing wrong?!?
Thanks in advance!
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Could you please provide guidance on the methodology or equations required to calculate the values of these capacitors? Any insights or resources you could share would be immensely helpful in my analysis and design process.
Thank you very much for your attention to this matter. I look forward to your response and appreciate your assistance.
Best regards,
Show Less购买REF-DAB11KIZSICSYS评估板,它的微控制器里面的程序是直接有还是需要自己装软件下载?
Hello,
I have a question regarding a seemingly missing piece of information in the datasheet of the 1EDI3050AS EiceDRIVER™.
Does Infineon have a figure for the maximum current rating of the input logic pins? I noticed that there was one noted in the datasheet for the output logic pins (Table 3 of the datasheet), but there doesn't seem to be one for the input logic pins.
This is important for our application. Any help would be appreciated.
Thank you!
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refer the title or subject (in an online forum)
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