Title:
HIGH-LOOP-STABILITY LDO CIRCUIT BASED ON LOAD-DEPENDENT ZERO MOBILE COMPENSATION, AND METHOD
Document Type and Number:
WIPO Patent Application WO/2024/031742
Kind Code:
A1
Abstract:
The present invention provides a high-loop-stability LDO circuit based on load-dependent zero mobile compensation, and a method. The LDO circuit comprises an LDO circuit body based on load-dependent zero mobile compensation, the LDO circuit body comprising a PMOS transistor MP6. The LDO circuit further comprises a dynamic resistance multiplication circuit in adaptive connection with the PMOS transistor MP6, wherein the dynamic resistance multiplication circuit generates, according to a load change state, a dynamic adjustment resistor connected in parallel with the PMOS transistor MP6, the dynamic adjustment resistor is connected in parallel with a resistor followed by the PMOS transistor MP6 to form a load equivalent resistance, and the formed load equivalent resistance is less than an equivalent resistance maximum value of the PMOS transistor MP6 in a loop-stable state, such that the high-frequency pole frequency of the LDO circuit body is greater than the unit gain frequency of the LDO circuit body. On the basis of the load-dependent zero mobile compensation, and when the load is greatly changed, the present invention can always maintain the loop stability and improve the load response capability.
Inventors:
CHEN BINGJIE (CN)
Application Number:
PCT/CN2022/114424
Publication Date:
February 15, 2024
Filing Date:
August 24, 2022
Export Citation:
Assignee:
BEIJING TONGXIN TECH CO LTD (CN)
International Classes:
G05F1/56
Foreign References:
| CN106155162A | 2016-11-23 | |||
| CN113342110A | 2021-09-03 | |||
| US20170371364A1 | 2017-12-28 | |||
| CN102541134A | 2012-07-04 | |||
| CN109116906A | 2019-01-01 | |||
| US20150116038A1 | 2015-04-30 | |||
| CN111367345A | 2020-07-03 |
Attorney, Agent or Firm:
BEIJING CROWN & RIGHTS LAW FIRM (CN)
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