I want to disable the over current shutdown of this little 500w china amp.
As per the datasheet I can remove R11 and R12 and connect pin 8 (OCSET) to VCC to disable the low side but it doesn't say how to disable it for the high side. The datasheet states that the CSD (pin 16) has max of VS to VB. Which should it be connected to? I'm thinking remove R16 and R17 and connect it to VB (pin 15)
As per the datasheet I can remove R11 and R12 and connect pin 8 (OCSET) to VCC to disable the low side but it doesn't say how to disable it for the high side. The datasheet states that the CSD (pin 16) has max of VS to VB. Which should it be connected to? I'm thinking remove R16 and R17 and connect it to VB (pin 15)
Refer to "Over-Current Protection (OCP)" on Pg 24 of the following document:
https://www.mouser.com/datasheet/2/196/iraudamp7d-1293517.pdf
https://www.mouser.com/datasheet/2/196/iraudamp7d-1293517.pdf
To disable the low side protection, remove R10
To disable the high side, remove R17.
Generally speaking, disabling protection is a bad idea.
For safe mode, adjust the protection threshold for the transistor values from the datasheet:
current 0.85 of maximum at 100C
Take the drain-to-source resistance as 1.45* Rdson 25C
To disable the high side, remove R17.
Generally speaking, disabling protection is a bad idea.
For safe mode, adjust the protection threshold for the transistor values from the datasheet:
current 0.85 of maximum at 100C
Take the drain-to-source resistance as 1.45* Rdson 25C
