公开(公告)号：US11095216B2

公开(公告)日：2021-08-17

申请号：US14630506

申请日：2015-02-24

Applicant: QUALCOMM Incorporated

Inventor： Yung-Chung Lo ,  Gang Zhang ,  Yiping Han ,  Frederic Bossu ,  Tsai-Pi Hung ,  Jae-Hong Chang

IPC: H02M3/156 ,  H02M1/00 ,  G05F1/575

Abstract: A method, an apparatus, and a computer program product are provided. The apparatus may be a regulator circuit. The regulator circuit includes a first voltage regulator to regulate a first input voltage to the first voltage regulator, the first voltage regulator including a P-type metal-oxide-semiconductor (PMOS), and a second voltage regulator to regulate a second input voltage to the second voltage regulator, the second voltage regulator including an N-type metal-oxide-semiconductor (NMOS). In an aspect, the first voltage regulator is coupled to the second voltage regulator.

公开(公告)号：US11726513B2

公开(公告)日：2023-08-15

申请号：US17443093

申请日：2021-07-20

Applicant: QUALCOMM Incorporated

Inventor： Yung-Chung Lo ,  Gang Zhang ,  Yiping Han ,  Frederic Bossu ,  Tsai-Pi Hung ,  Jae-Hong Chang

IPC: G05F1/575 ,  H02M3/156 ,  H02M1/00

CPC classification number: G05F1/575 ,  H02M3/156 ,  H02M1/0077

Abstract: A method, an apparatus, and a computer program product are provided. The apparatus may be a regulator circuit. The regulator circuit includes a first voltage regulator to regulate a first input voltage to the first voltage regulator, the first voltage regulator including a P-type metal-oxide-semiconductor (PMOS), a second voltage regulator to regulate a second input voltage to the second voltage regulator, and a switch circuit to selectively activate at least one of the first voltage regulator or the second voltage regulator. In one aspect, the second voltage regulator includes an N-type metal-oxide-semiconductor (NMOS). In one aspect, the second voltage regulator comprises a two-stage operational transconductance amplifier (OTA) circuit. In an aspect, the first voltage regulator is coupled to the second voltage regulator.

公开(公告)号：US10116259B2

公开(公告)日：2018-10-30

申请号：US14548691

申请日：2014-11-20

Applicant: QUALCOMM Incorporated

Inventor： Yiping Han ,  Yung-Chung Lo ,  Zhang Jin

IPC: H04B1/38 ,  H03B5/12

Abstract: Certain aspects of the present disclosure provide an inductor-enclosed switchable voltage-controlled oscillator (VCO), for use in a frequency synthesizer of a radio frequency integrated circuit (RFIC), for example. One example apparatus is a frequency synthesizer that generally includes a first VCO circuit comprising a first inductor and a second VCO circuit comprising a second inductor, wherein at least a portion of the first VCO circuit is disposed inside a loop of the second inductor. According to certain aspects, at least a portion of the second VCO circuit is disposed inside a loop of the first inductor.