| 主权项 |
1. A system for power regulation, the system comprising:
a reference generation circuit configured and arranged to generate a reference voltage and at least one reference current; a plurality of regulator stages configured and arranged to generate a respective regulated output voltage at a respective output node, each regulator stage including:
a difference amplifier having a first input coupled to receive the reference voltage and a respective second input coupled to receive a feedback voltage that is proportional to the respective regulated output voltage; anda plurality of output transistors, each output transistor having an input driven by a signal output from the difference amplifier and configured and arranged to drive the regulated output voltage at the output node in response to a signal output from the difference amplifier; a voltage boost circuit, configured and arranged to generate a second source voltage from a first source voltage, the second source voltage coupled to a respective source voltage input of each of the difference amplifiers; a start-up circuit arranged and configured to, while operating in a start-up mode, generate second and third source voltages from a first voltage source, and power the reference generation circuit using the fourth source voltage; and a voltage boost circuit, configured and arranged to generate a fourth source voltage from the second source voltage, the fourth source voltage coupled to a respective source voltage input of each of the difference amplifiers. |
