Pogo pins for TWS charging Solutions
Compared with ordinary wired earphones, Bluetooth earphones are more convenient to use. With the continuous updating of technology, the sound quality of Bluetooth earphones is getting closer and closer to wired earphones; since Apple iPhone 7, the 3.5mm earphone jack has been canceled, which is even more important. The development of Bluetooth headsets.
The iPhone without the 3.5mm traditional headphone jack
The most obvious difference between Bluetooth earphones and traditional wired earphones is that there is no long earphone cable, and audio signals are received through Bluetooth, so Bluetooth earphones have independent circuits and power supplies, and can be charged for daily use as a mobile phone; today, we want to This article introduces the types of pogo pins used in the TWS (True Wireless Stereo) Bluetooth headset charging compartment.
On the TWS earphone charging box, we have seen various specifications of pogo pins (pogo pin connectors), including 2Pin, 3Pin, 5Pin, etc. The use of pogo pins is regular, and the whole is divided into 2Pin pogo pins and 3Pin pogo pins. and more Pins. So what are the uses of so many pogo pins?
1. 2Pin pogo pin solutions:
The design of the 2Pin pogo pin is the most common on the market, and this design can meet the rigid needs of TWS headset charging. The two pins are positive and negative, respectively, and are used to transfer the power of the battery compartment of the TWS charging box to the earphone. In this way, if the TWS is used as a Bluetooth headset for calls, one headset is working, and the other headset can be put into the charging compartment to replenish the power; such a cycle of use can meet the needs of ultra-long battery life.
Previously, 2Pin pogo pins could not take into account communication while supplying power. Therefore, to add personalized functions, the TWS earphone factory tried 3Pin pogo pins, 5Pin pogo pins, and other design schemes, which also brought increased product volume and difficulty in assembly. It is complicated and brings about an increase in cost.
2. 3Pin pogo pin solution
The design of the 3Pin spring thimble, in addition to the 5V charging and grounding, adds a pin for the battery voltage of the headset, which is used to measure the real power of the headset.
3Pin charging pin 3Pin charging pin
TWS Bluetooth headset with 3Pin charging pin TWS Bluetooth headset with 3Pin charging pin
3Pin charging pin for Bluetooth headset charging case 3Pin charging pin for Bluetooth headset charging case
3. 5Pin pogo pin solution
The design of the 5Pin spring thimble takes into account the above two purposes and has more functions.
This kind of design can only be seen in high-end TWS Bluetooth headsets, which are relatively rare. It can be used for data transmission in the internal storage of the headset, firmware upgrade of the headset, protocol data communication, and other functions.
