Dongwo Electronics TWS wireless Bluetooth headset ESD electrostatic protection solution

In recent years, TWS wireless Bluetooth headsets have been favored by users, so how do they work? TWS wireless Bluetooth headsets are connected wirelessly via Bluetooth. There is no connection line between the two headsets, and the audio signals need to be synchronized without delay or sound distortion. To this end, in order to meet this high requirement, in addition to selecting a highly reliable Bluetooth master chip, you also need to pay attention to the layout of the Bluetooth antenna to synchronize the signal transmission between the two headsets. However, during this process, there may be many reasons that affect signal transmission. Among them, ESD static electricity and overcurrent are the most headaches for TWS wireless Bluetooth headset hardware design engineers.

Since its establishment, DOWOSEMI has been committed to solving surge, voltage, static electricity and other problems in circuits for customers. As a professional high-quality protection device manufacturer and protection solution service provider, Dongwo Electronic Technology has designed a solution for the ESD electrostatic overcurrent protection problem of TWS wireless Bluetooth headsets, which is also one of the most adopted solutions by customers, as shown in the figure below :

Advantages of the solution: This solution uses single device protection, small package, saves space, ensures signal integrity, meets IEC61000-4-2, level 4, contact discharge 8kV, air discharge 15kV.

Solution description: TWS wireless Bluetooth headset has an overcurrent problem. Since the TWS wireless Bluetooth headset has a small operating current and a small size, it is recommended to use the Dongwo DW-TSM010 model self-restoring fuse PPTC, which can effectively protect against excessive current and overheating in the charging compartment. The problem. For details on the parameters of the resettable fuse DW-TSM010, you can obtain the product manual from Dongwo Electronics.

For TWS wireless Bluetooth headset electrostatic protection issues, it is recommended that customers choose Dongwo DW05-2RT5-E electrostatic ESD protection diode, one-way, operating voltage 5V, breakdown voltage 6V, peak pulse current 4A, clamping voltage 25V, SOT-563 package. It can effectively meet the electrostatic protection requirements of TWS wireless Bluetooth headsets.

For details of specific parameters, please refer to Dongwo Electronics' "ESD-DW05-2RT5-E Datasheet" and "PPTC-DW-TSM010 Datasheet" product data sheets. The above is the classic protection design scheme for TWS wireless Bluetooth headsets. If you have special needs, you are welcome to discuss it. For surge electrostatic protection solutions, look to Dongwo Electronics for circuit protection and avoid getting lost! The ESD diode DW05-2RT5-E and resettable fuse DW-TSM010 launched by Dongwo Electronics are now in full mass production, with stable quality, high reliability, fast delivery, manufacturer price, free samples, free EMC testing, and free selection. Welcome new and old customers to come for consultation!