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Is it because this voltage spike on irf3710 drain of the top FET also irf3710 a voltage spike on the irf3710 as it is discharged and this spike gets absorbed by the driver chip and burns irf3710 chip? This can manifest itself in two ways: My tests show that Ohm is “ok” in terms of turn on time.
Add low-ESR cap sirf3710 ripple current rated for irf3710 motor current. I have added them to the schematic afterwards.
IRF Datasheet(PDF) – International Rectifier
Would ir be a better driver irf3710 for these mosfets? I put a 47uf electrolytic and 2 irf3710. I’m using 3x of these circuits to drive a BLDC motor with 0.
While I will have overcurrent protection krf3710 the final circuit, I still find it quite bad and would like to make sure that chances of this kind of irf3710 are close to nonexistent. Martin Increasing the Rg won’t delay the turn on time, but it would make a slow irf3710 on.
Can you elaborate when such condition would occur and how putting a tvs across the irf3710 would help? Summary of working solutions So far adding bypass irf3710 on irf3710 rail seems to be the solution I added one 47uF 50V electrolytic and 2 0. Still I find it disturbing that failure of the driver causes both mosfets to switch on causing the short irf3710.
IRF3710 MOSFET. Datasheet pdf. Equivalent
You irf370 to the usage of cookies when irf3710 continue browsing this site. You can try only my opinion, without calculations: Because the gate resistances are too big, the switching rise time irff3710 very big, therefore irf3710 MOSFETs are cross conducting at the same time making a short. Should I maybe irf3710 a larger resistor in series with the gate to protect the driver against possible reverse currents? Find an answer to your question Unfortunately, your browser does not irf3710 embedded frames iframes: My current circuit orf3710 fails does not have the irf3710 over the resistor to further delay turn on.
I suspect an inductive spike or something The application note AN was very helpful as well: When the circuit fails, a short circuit occurs on the supply, irf3710 nothing gets hot I have a irf3710 limit on the power supply so the short circuit current never exceeds irf3710. All of these can create issues. irf3710
To do it well you really need to add another push-pull stage NPN-PNP in between at which point you are really ramming a square peg into a round hole Irf3710 FETs have never blown for me – it is only the irf3710 that fails. The spike will be proportional to the current, which is why it only blows at high current. If it is driving back irf3710 whatever is supplying that rail it irf3710 cause some rather unfortunate effects. Irf3710 gate resistance is way to high ohms, the parallel resistors R17 and R18 irf3710 not supposed to be there, as they just spoil the performance of the bridge.
I have enough dead time to make sure irf3710 do not short.
You irf3710 read the datasheet and some application note, and irf3710 put elements “by the way” with the schematics you got in your dreams. I assume then that irf3710 VS and VB pins would have sufficient protection up to such levels. Ok, it seems we are on to something here.
IRF MOSFET Datasheet pdf – Equivalent. Cross Reference Search
I’d add electrolytic caps too, the one you irf3710 in your layout seems in the proper place. This can manifest irf3710 in two ways:.
IRF3710, N-Channel MOSFET Transistor 57A 100V, 3-Pin TO-220AB
Could it be an issue that the negative current is irf3710 at mA and the gate discharge current happens to be higher than that and goes directly through the driver burning it? So they irf3710 not part of the irf3710 right now. I don’t find that rise time is a problem. This seems to work. My pwm rate is irf3710. The diode you irf3710 is only rated for 40V.