I have a H-bridge build around HIP4080A,with a 12v input voltage and 4 IRF540 mosfets in H-bridge configuration,The problem with the circuit is that when I apply logic 5v on the In+ pin and 0v at In- pin then the h-bridge works but doesn't supply load current to the output,I.e only multi-meter shows the exact same voltage as the bus voltage(19v DC) but as soon as load is applied in the output the voltage drops to zero and no components seems to heat up.
now I reverse the input IN+ -> 0V
IN- ->5V
one side of mosfets starrts to over heat and a little voltage of -3.5v is shown in the multimeter.
what might be the problem.
P.s input on the IN+ and in- are constant 5v or 0v
DIS pins and Hen Pin are tied to 12v and zero volt for east testing of the circuit.
dead timing resistors are 150k each
boot strap diode are UF4007 and 0.47uf caps are used.

 

schematic?

IRF540 is not a logic level mosfet..

 

I am supplying 5v into the IC to trigger the Mosfets and IC is powered by 12v Supply.
But you are saying that I need to supply 15v into the (hip4080)IC logic(IN+ AND IN-) to make it work?
I.E IN+ ->12V
IN- ->0V Is that right.

 

Sounds like you need to learn more about mosfets before you try to use them..