Dec 9, 2021

GEORGE TOWN, Grand Cayman, Dec 09, 2021 (GLOBE NEWSWIRE) -- O₂Micro ® International Limited (NASDAQ Global

Select Market: OIIM), a global leader in the design, development and marketing of high-performance integrated circuits and

solutions, today announced today announced the grant of a patent issued to O2Micro for a battery protection system.

O₂Micro was issued 20 claims under GB Patent No. 2565006 on Sep 8, 2021, for the invention of a battery protection system, which

includes a sensor, a primary protection circuit, coupled to the sensor, and a secondary protection circuit, coupled to the primary

protection circuit and the sensor. The sensor is configured to generate a sense signal indicative of a temperature in a battery pack

when the sensor is activated. The primary protection circuit is configured to generate a synchronizing signal in a first state or a

second state, sample the sense signal when the synchronizing signal is in the first state, and provide a primary protection to the

battery pack based on the sense signal. A secondary protection circuit is configured to be controlled by the synchronizing signal,

sample the sense signal when the synchronizing signal is in the second state, and provide a secondary protection to the battery

pack based on the sense signal.

Dr. Guoxing Li, VP of Advanced Technology, O2Micro, commented,"This invention provides a cost-effective solution to enhance the

battery pack temperature related protections and reach higher function safety requirements.”

About O2Micro:

Founded in April 1995, O2Micro develops and markets innovative power management components for the Computer, Consumer,

Industrial and Automotive markets. Products include Backlighting and Battery Management.

O₂Micro, the O₂Micro logo, and combinations thereof are registered trademarks of O₂Micro. All other trademarks or registered

trademarks are the property of their respective owners.

Contact Information:

O2Micro Daniel Meyberg

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