Urgent Please.. Motor driver with IR2101

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Emre Çakal

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Hello! What is problem in this device? It doesn't work and I need to make this device in a few days. Can you help me please?


 

Share proteus schematic file. are you able to simulate it using Proteus ?
 
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    modare

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Both circuits will not work in continius mode because of bootstrap capacitors have to be charged only in pulse mode. So, the upper transistors should heat a lot in your case.
 

He needs a charge pump, a separate (isolated) power supply or a 24V rail to feed the bootstrap capacitor of the high side driver.
 

Can someone please send me the drawing in Proteus? I try every way but does not work.
 

I guess he learned about relays way before H-bridges. He might choose the H-bridge on purpose.

- - - Updated - - -

He might also use P-channel MOSFETs for the high side. The dead time is missing in the actual configuration, too.
 

I was wondering if you shunted the FETs with a 1K resistor, so when the low side FETs turned on the Vs (1/2 Vcc) dropped to 0V, so a little charge went into the bootstrap but you will need to do it a lot before it has enough volts on it to turn the top FETs on. One pulse from a switch would not work!
Frank
 

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