Applied result detail

System and method for controlling a low-dropout regulator

LONDÁK, P.; MATĚJ, J.; ROZSYPAL, P.

Original Title

System and method for controlling a low-dropout regulator

English Title

System and method for controlling a low-dropout regulator

Type

Patent

Original Abstract

A system and method for controlling a low-dropout regulator (LDO) is disclosed. The system and method includes a charge pump that is controlled to provide a charge pump voltage to power the LDO. The charge pump voltage can be adjusted relative to the LDO's input voltage to ensure efficient operation of the LDO for input voltages over a range. The charge pump is also controlled to limit the maximum charge pump voltage provided to ensure safe operation of the LDO. The system and method also includes a under voltage lockout circuit that enables the LDO when it is determined that the charge pump voltage is sufficient to meet multiple criteria enable For example, the charge pump voltage may be analyzed to determine if it is above a minimum voltage and also sufficiently higher than the LDO's output voltage.

English abstract

A system and method for controlling a low-dropout regulator (LDO) is disclosed. The system and method includes a charge pump that is controlled to provide a charge pump voltage to power the LDO. The charge pump voltage can be adjusted relative to the LDO's input voltage to ensure efficient operation of the LDO for input voltages over a range. The charge pump is also controlled to limit the maximum charge pump voltage provided to ensure safe operation of the LDO. The system and method also includes a under voltage lockout circuit that enables the LDO when it is determined that the charge pump voltage is sufficient to meet multiple criteria enable For example, the charge pump voltage may be analyzed to determine if it is above a minimum voltage and also sufficiently higher than the LDO's output voltage.

Keywords

LDO; Charge Pump; Low Dropout Voltage Regulator; control system; Under Voltage Lockout; UVLO

Key words in English

LDO; Charge Pump; Low Dropout Voltage Regulator; control system; Under Voltage Lockout; UVLO

Patent number

10802523

Date of application

17.07.2019

Date of registration

13.10.2020

Date of expiry

13.10.2040

Owner

SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC (Phoenix, AZ)

Licence fee

In order to use the result by another entity, it is always necessary to acquire a license

URL

https://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=2&f=G&l=50&co1=AND&d=PTXT&s1=Londak&OS=Londak&RS=Londak