Hi im new here therefor Hello to everyone!,

Im trying to build a metal detector using an IR2110 mosfet driver. I use 12 volts to drive the coil and to fed the mosfet driver. I use the driver as two low sides with 2 mosfets sepperated coil drivers. The fets i use are IRFS31N20DTRL that gives mee max 200v 30A and Rds-on is 0.082 Ohm but when im pulsing the driver the driver will take 2 amps is this oke?! at 10v it is taking around the 0.5 amps and i cant figgure out why its taking that mutch amperage.

Im wondering why this occures beqourse it likes to schrink my batteries by the minute

Christian (The Netherlands)

 

Hello,

Can you post a schematic of your setup?
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Bertus

 

Here is my schematic i dont have a diagram program so i directly draw it in Sprint Layout. The four holes at the left are the coils 2x 400uH (I used the last schematic from http://tahmidmc.blogspot.nl/2013/01/using-high-low-side-driver-ir2110-with.html ) the Dual Lo Driver

 

This is the Schematic i used.

 

What are the input pulse parameters?

 

5v digital with a 10k resistor pulselength 200uS and closed time is 1000uS i tried to disconnect both coils and tried again and the mosfets get up to 100 degrees in a minute can it be the resistors at the gate? Ill try to replace those with 2 100nF's

Christian

 

Problem Solved...

 

Problem Solved...

Please post what problem you found, and what you did to fix it, to help others that in the future have a problem like this.