SimonPoon
Newbie level 6
Hi all, I have face a problem for measure the current load by comparator, below is the block diagram for our product, it's a battery product.
We have a Q1 to control the battery on off by MCU, when MCU is cutoff the Q1, the Load is not cut because the path is change, current flow through the op amp TLV8802 input to ground, when I cut the supply of TLV8802, the voltage flow to regulator from the battery through the load and TLV8802 input. Since we are operate very high current motor, change to P-FET to cut the power is not available (higher Rds)
Is there any idea to fulfill this?
p.s. Cut the power and current detection when motor stop operate or the user switch off the battery(hence no need to detect when cut the Q1 cause the Battery is slept)
Thanks for the help!
We have a Q1 to control the battery on off by MCU, when MCU is cutoff the Q1, the Load is not cut because the path is change, current flow through the op amp TLV8802 input to ground, when I cut the supply of TLV8802, the voltage flow to regulator from the battery through the load and TLV8802 input. Since we are operate very high current motor, change to P-FET to cut the power is not available (higher Rds)
Is there any idea to fulfill this?
p.s. Cut the power and current detection when motor stop operate or the user switch off the battery(hence no need to detect when cut the Q1 cause the Battery is slept)
Thanks for the help!
Last edited: