Dalian Da Quanding Group launches smart TWS headset charging box solution based on Qualcomm and Richtek products

On October 19, 2023, Dalianda Holdings, a leading international semiconductor component distributor dedicated to the Asia-Pacific market , announced that its subsidiary Quanding launched a chip based on Qualcomm QCC3056 chip and Richtek RT6160A chip. Smart TWS headset charging box solution.

Figure 1 - Display board of Dalian Da Quanding’s smart TWS headset charging box solution based on Qualcomm and Richtek products

In recent years, with the rapid development of the TWS Bluetooth headset market, new products are emerging one after another. Against this background, users' requirements for the charging compartment for TWS headsets are becoming increasingly stringent. In addition to daily storage and charging functions, users also hope that it has more distinctive functions. In this regard, Dalian Daquan Ding launched a smart TWS headset charging box solution based on Qualcomm QCC3056 chip and Richtek RT6160A chip. In addition to meeting basic needs, this solution also provides rich expansion functions and can bring users a smarter experience.

Figure 2 - Scenario application diagram of Dalianda Quanding’s smart TWS headset charging box solution based on Qualcomm and Richtek products

The QCC3056 is an ultra-low-power, single-chip solution from Qualcomm optimized for true wireless headphones and hearables. In terms of design, QCC3056 is equipped with a powerful quad-core processor architecture and can support complex application designs. Functionally, while supporting Adaptive ANC, aptX HD, aptX Adaptive and CVC functions, the chip also supports Bluetooth 5.2 and Qualcomm TrueWireless™ mirroring technology, which can achieve a more stable connection for the solution.

The RT6160A is a high-efficiency, single-inductor, advanced constant on-time (ACOT) synchronous buck-boost converter from Richtek, which allows programmable output voltage and is suitable for wide input power range applications. The chip's ACOT control architecture provides excellent line/load transient response and seamless transitions between buck and boost modes. And the RT6160A uses small ceramic output capacitors to provide stable operation, eliminating the need for complex external compensation designs in the circuit.

Figure 3-Block diagram of Dalianda Quanding’s smart TWS headset charging box solution based on Qualcomm and Richtek products

This solution uses the Qualcomm QCC3056 chip as the main control platform and the Richtek RT6160A chip to achieve a charging platform with both low power consumption and high performance. This platform can be combined with Qualcomm's dedicated charging communication protocol to expand a variety of applications. Combining this solution with headphones equipped with Qualcomm Snapdragon Sound S5/S3 platform can further improve the use effect of TWS headphones.

Qualcomm's proprietary charging communication protocol allows for more efficient communication between the charging box and the two earphones at up to 1.5Mb/s . It works by briefly pausing charging and using the VCHG line to communicate at a lower voltage, avoiding the requirement for current sensing circuitry and allowing for higher data rates. It not only facilitates developers to perform basic debugging configuration of the final product. And it can provide consumers with more intelligent experiences.

Core technical advantages :

• Supports in-ear pairing in the headset compartment, mobile phone pairing, synchronized pairing information in the compartment, and automatic pairing when the cover is opened;

• Supports inter-ear communication without Bluetooth connection;

• Support OTA upgrade, two-way upgrade can be applied freely;

• Supports in-warehouse equipment test mode to facilitate production line operations;

• Supports headset transportation mode to significantly reduce standby power consumption and avoid battery exhaustion during delivery;

• Support extended commands and customized differentiated functions;

• Support Linein and USB input.

  
  Plan specifications:

• Support BT5.3 protocol;

• Use WLCSP small package;

• Ultra-low standby power consumption;

• Rich peripheral interfaces.