Regulator and operation method thereof
AssigneeeMemory Technology Inc.
InventorChe-Wei Chang
Life of this patent
Estimating the term…
Abstract
A regulator includes a pre-regulator circuit, a pump circuit, an output stage circuit, and a tracking circuit. The pre-regulator circuit is configured to generate a pre-regulated voltage according to a power voltage. The pump circuit is configured to generate a pumped voltage according to the pre-regulated voltage and a tracking voltage. The output stage circuit is configured to generate an output voltage according to the pumped voltage and the power voltage. The tracking circuit is configured to track the output stage circuit to generate the tracking voltage and transmit the tracking voltage to the pump circuit.
Claims16
A regulator, comprising:
- a pre-regulator circuit configured to generate a pre-regulated voltage according to a power voltage;
- a pump circuit configured to generate a pumped voltage according to the pre-regulated voltage and a tracking voltage;
- an output stage circuit configured to generate an output voltage according to the pumped voltage and the power voltage;
- and
- a tracking circuit configured to track the output stage circuit to generate the tracking voltage and transmit the tracking voltage to the pump circuit,
- wherein the pump circuit comprises:
- a first switch and a second switch coupled in series at a first node between the pre-regulator circuit and the output stage circuit;
- a third switch and a fourth switch coupled in series at a second node between a ground terminal and the tracking circuit;
- a capacitor coupled between the first node and the second node;
- and
- an oscillator configured to output a clock signal and an inversion clock signal to control the first switch, the second switch, the third switch, and the fourth switch.
An operation method of a regulator, comprising:
- generating, by a pre-regulator circuit, a pre-regulated voltage according to a power voltage;
- tracking, by a tracking circuit, to generate a tracking voltage;
- transmitting, by the tracking circuit, the tracking voltage to a pump circuit;
- generating, by the pump circuit, a pumped voltage according to the pre-regulated voltage and the tracking voltage;
- and
- generating, by an output stage circuit, an output voltage according to the pumped voltage and the power voltage,
- wherein generating, by the pump circuit, the pumped voltage according to the pre-regulated voltage and the tracking voltage comprises:
- outputting, by an oscillator in the pump circuit, a clock signal and an inversion clock signal to control a first switch in the pump circuit, a second switch in the pump circuit, a third switch in the pump circuit, and a fourth switch in the pump circuit,
- wherein the first switch and the second switch are coupled in series at a first node between the pre-regulator circuit and the output stage circuit, the third switch and the fourth switch are coupled in series at a second node between a ground terminal and the tracking circuit, and a capacitor in the pump circuit is coupled between the first node and the second node.
Dependencies are inferred from the claim text.