I'm using TPS73201 to regulate the supply voltage of MSP430. Vdac is used to set up the voltage Vout. rs is used as shunt to measure the current drawn by MSP430.
Rs=1 Ohm, R1=200K Ohm, R2=1M Ohm, R3=82K Ohm.
Vdac is betwwen 0V...1,2V
Vout, without any load is pretty much stable, but when loaded (100mA) Vout is not stable any more.
As a load, I used a resistor now. Later it will be the MSP430.
So what is the reason of this unstability?
Thx