“In recent years, although the USB Type-C interface has become a major standard for smartphones due to its excellent transmission rate, most other electronics such as computers are still in the follow-up stage and have not been fully popularized. With the continuous improvement of the performance of the new USB Type-C interface, some of the latest laptops have been equipped with the Type-C interface, which has led to the problem of the incompatibility of the power charging interface. In order to solve this problem, the Type-C PD power docking station solution launched by Dalian Daquan Ding based on the RICHTEK RT6190 chip can meet the charging needs of Type-C PD power.

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On August 11, 2022, Dalian General Holdings, a leading semiconductor component distributor dedicated to the Asia-Pacific market, announced that its subsidiary Quanding has launched a Type-C PD power docking solution based on the RICHTEK RT6190 chip.

Figure 1 – The Display board diagram of the Type-C PD power supply docking station solution based on RICHTEK products

In recent years, although the USB Type-C interface has become a major standard for smartphones due to its excellent transmission rate, most other electronics such as computers are still in the follow-up stage and have not been fully popularized. With the continuous improvement of the performance of the new USB Type-C interface, some of the latest laptops have been equipped with the Type-C interface, which has led to the problem of the incompatibility of the power charging interface. In order to solve this problem, the Type-C PD power docking station solution launched by Dalian Daquan Ding based on the RICHTEK RT6190 chip can meet the charging needs of Type-C PD power.

Figure 2-Scenario application diagram of the RICHTEK-based Type-C PD power docking solution

RT6190 is a 4-switch bidirectional Buck-Boost controller specially developed by RICHTEK for USB-PD applications. It can work in the input voltage range of 4.5V~36V, and the output voltage can be adjusted in 3V~36V. Its control structure is peak current mode, and the output power is up to 100W in programmable constant current and constant voltage mode. And the device has a built-in charge pump circuit, which can control the external low-cost N-type MOSFET switch to realize power path management. RT6190 has I²C interface, its output voltage, current limit value, operating frequency and cable voltage drop compensation parameters can be set. It also has a complete protective design, including input under-voltage lockout protection, over-voltage and under-voltage protection, cycle-by-cycle current limit, short-circuit protection and thermal protection.

Figure 3 – Block diagram of the RICHTEK-based Type-C PD power docking station solution

RICHTEK is an international analog IC design company, focusing on providing customers with diverse and competitive products and complete power management solutions. The Type-C PD power docking station solution jointly launched by Dalian Daquanding and RICHTEK can provide stable voltage output for various interfaces.

Core technical advantages:

• Bidirectional 36V output input;
• Controllable buck-boost;
• Programmable constant voltage and constant current output;
• Complete over-voltage, low-voltage, over-current, over-temperature protection mechanisms;
• Built-in VBUS bleeder mechanism that complies with PD specification;
• PWM working mode can be programmed to be PSM or FCCM;
• With line loss compensation.

Program Specifications:

• Voltage input: 4.5V～36V;
• Voltage output: 3V～36V;
• Working frequency: 250K～1MHz;
• I²There are 2 sets of C positions that can be set.