Invention Grant
- Patent Title: In-rush current control for charge-pump LDO
- Patent Title (中): 电荷泵LDO的浪涌电流控制
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Application No.: US13843202Application Date: 2013-03-15
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Publication No.: US09225234B2Publication Date: 2015-12-29
- Inventor: I-Ning Ku , Hui Zheng , Xicheng Jiang
- Applicant: BROADCOM CORPORATION
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: McDermott Will & Emery LLP
- Main IPC: G05F1/575
- IPC: G05F1/575 ; H02M1/36 ; G05F1/56 ; H02M3/07

Abstract:
A circuit for a charge-pump low-dropout (LDO) regulator may include a comparator circuit configured to control a pass transistor based on an error signal. A pre-charge path may be provided between a supply voltage and an output node of the regulator. The pre-charge path may be configured to allow charging of an output capacitor to a pre-charge voltage during a pre-charge operation mode. The output capacitor may be coupled between the output node of the regulator and ground potential. The pass transistor may be configured to allow charging of the output capacitor during an LDO mode of operation. A charge-pump circuit may be configured to provide a current for charging the output capacitor during the LDO mode of operation.
Public/Granted literature
- US20140266099A1 IN-RUSH CURRENT CONTROL FOR CHARGE-PUMP LDO Public/Granted day:2014-09-18
Information query
IPC分类: