Patent ID: 11916476
Assignee: NANYA TECHNOLOGY CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A voltage generator, comprising:
at least one first charge pump circuit, receiving a clock signal to generate a first pump voltage;
at least one second charge pump circuit, receiving the clock signal to generate the first pump voltage;
an oscillator, providing the clock signal;
a passing circuit, receiving the clock signal, a power-on detection signal and an external command; and
a voltage detector, receiving an operation voltage, and generating the power-on detection signal by detecting the operation voltage,
wherein the passing circuit determines whether to transmit the clock signal to the at least one second charge pump circuit or not to activate or deactivate the at least one second charge pump circuit, wherein the passing circuit comprises:
a SR-latch, having a set end for receiving an inverted signal of the external command, a reset end for receiving the power-on detection signal, and an output end for generating a control signal; and
a switch, having a first end for receiving the clock signal, a second end coupled to the at least one second charge pump circuit, and a control end for receiving the control signal.