How to improve the load capacity of power chip

芝麻薄脆饼饼

How to improve the load capacity of power chip [Copy link]

I built a bandgap circuit at school according to the structure of a foreign chip, but the simulation found that the load capacity is not good; and I have to add capacitors to sacrifice bandwidth to compensate for the phase margin. Without adding capacitors, the circuit oscillates with equal amplitude. Is there any way to improve the load capacity; is there any way to improve the phase margin without adding capacitors?

chunyang

Post your circuit. If you want to get prompt and effective help, first describe your problem correctly and completely, and provide pictures if necessary.

qwqwqw2088

Simulation found that the load capacity is not enough?

LM503

Is the power insufficient? You can check whether the power supply used in the circuit can provide normal working conditions for all devices. I played with the constant current source circuit before. The power supply voltage was too low, the transistor could not work normally in the saturation area, and the circuit could not work normally.

伟林电源

Being simple and rude is pure hooliganism.