Another IR2110 Problem 2 amps? And im new here!

Thread Starter

XPCam

Joined Jan 12, 2015
5
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)
 

bertus

Joined Apr 5, 2008
20,314
Hello,

Can you post a schematic of your setup?
You can use the Upload a File button below the reply window to attach the image.

Bertus
 

Thread Starter

XPCam

Joined Jan 12, 2015
5
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
 
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