Samsung patents circuit design to keep memory chips running smoothly
This patent describes a low dropout regulator, a component that keeps voltage steady for electronic parts. It uses a dual-feedback system where one loop checks the final output and a second loop monitors an internal signal to adjust the power flow more precisely.
In the filing’s own words
An example low dropout (LDO) regulator includes a voltage regulating circuit and an adaptive biasing circuit. The voltage regulating circuit is configured to regulate an output voltage of an output node connected with a load by using the output voltage as first feedback. The adaptive biasing circuit is configured to generate a biasing signal that supports regulation of the output voltage by using a sensing signal in an internal node of the voltage regulating circuit as second feedback, and to provide the biasing signal to the voltage regulating circuit.
What exactly they claim (claim 1)
1. A low dropout (LDO) regulator comprising: a voltage regulating circuit configured to regulate an output voltage of an output node, the output node being connected with a load, the output voltage being used as first feedback; and an adaptive biasing circuit configured to generate a biasing signal configured to regulate the output voltage based on a sensing signal in an internal node of the voltage regulating circuit, the sensing signal being used as second feedback, and provide the biasing signal to the voltage regulating circuit; wherein the voltage regulating circuit comprises: a flipped voltage follower comprising a plurality of transistors; and a comparator configured to output, to the flipped voltage follower, a result of comparing the first feedback with a reference voltage; and wherein the adaptive biasing circuit comprises: a sink current complementary circuit configured to generate, based on the sensing signal, the biasing signal complementing the sink current, the sink current flowing from the flipped voltage follower to the ground.
Facts
- Company
- Samsung (SAMSUNG ELECTRONICS CO., LTD.)
- Official title
- Low dropout regulator and memory device including the same
- Patent number
- US12761681B2
- Application number
- 18760350
- Filed
- Jul 1, 2024
- Granted
- Oct 13, 2026
- Inventors
- 4
- Claims
- 19
Classified under
G05F 1/575 Physics & computingG05F 1/565 Physics & computingG11C 5/143 Physics & computingG11C 5/147 Physics & computingG11C 11/4074 Physics & computingG11C 5/14 Physics & computingMore from Samsung in Chips & hardware
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.