[Daxin Solution] Adaptive and flexible charging, Dalianda launches a 100W bidirectional charging and discharging reference design solution based on Huinengtai products

Figure 1 - Display board of Dalianda Shiping’s PD 100W bidirectional charging and discharging solution based on Huinengtai products

Figure 2 - Scenario application diagram of Dalianda Shiping’s PD 100W bidirectional charging and discharging solution based on Huinengtai products

This solution is a combination of USB Type-C PD DRP controller and battery charging management system. HUSB311 is configured to provide support for bidirectional charge and discharge (DRP), and various supported voltage and current standards can be freely customized, and PD can even be used. Custom instructions of the protocol to authenticate the devices of both parties. After the identity recognition is successful, support for higher voltage and larger current is initiated to improve the user experience. In addition, HUSB311 can automatically detect regardless of externally connected charging equipment or power supply equipment, adaptively adjust the power role, and successfully complete the power handshake of the PD protocol.

HUSB311 is a high-performance USB PD PHY chip launched by Hynetek in 2021. Hynetek is a company focusing on smart energy control technology. It mainly provides high-performance digital-analog hybrid chip products for the fields of smart fast charging and digital energy. At present, Hynetek has completed the overall product layout around the USB Type-C ecological chain, developed and mass-produced a variety of products.

Figure 3-Block diagram of Dalianda Shiping’s PD 100W bidirectional charging and discharging solution based on Huinengtai products

At runtime, the USB PD DRP controller HUSB311 establishes a Type-C port manager, also known as TCPM, with the MCU. Due to the existence of TCPM, the solution can automatically switch its role as a host, device or DRP according to the type of electronic product connected to USB Type-C. In addition, both HUSB311 and PL5500 integrate I2C interface as slave devices. Monitoring and advanced configuration can be achieved through microprocessor communication through the I2C interface, such as monitoring the capacity of the PD power supply and PDO negotiation. Through the I2C interface of PL5500, charging parameters can be flexibly programmed, such as input current limit, input voltage limit, charging current, battery full, etc.

Through this solution, you can effectively charge 1-6 batteries, or discharge the large-capacity battery pack of a laptop or mobile phone. Through USB PD negotiation, it can achieve PD 100W fast charge and discharge function through a USB Type-C port, which is very Suitable for power tools, IoT devices, power banks and portable electronics.

▌Core technology advantages

Main features of HUSB311:

• USB PD Dual-Role Port;

• Support USB PD3.1 and USB TCPCI V1.1;

• Plug and unplug detection in Host mode, Device mode and DRP mode;

• Current capability broadcast and detection;

• Cable type identification;

• Support VCONN;

• Support dead battery mode;

• Ultra-low power standby mode;

• 30V VBUS pin withstand voltage and CC pin withstand voltage;

• Support 2 I2C communication addresses;

• Support BIST mode;

• e-fuse burning mode;

• Two packaging modes: 1.35mm×1.4mm WLCSP-9B and 2.5mm×2.5mm QFN-14L;

• ±2kV HBM ESD.

▌Project specifications

As Sink PD Sink functions:

• 5V-20V battery configuration: 1-6 cells;

• The maximum charging current is 5A;

• The maximum charging power is 100W.

As Source PD Source functions:

• 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/5A battery configuration: 4-6 cells;

• The maximum discharge current is 5A;

• The maximum discharge power is 100W.

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