Firmenblog über Supplying Southchip SC5008QFNR: A High-Efficiency 15W Wireless Charging Transmitter Chip for an Exceptional Charging Experience

As a leading distributor of electronic components, Shenzhen Mingjiada Electronics Co., Ltd. now has a large stock of the SC5008QFNR, a high-performance wireless power transmitter chip launched by Southchip. With its high integration, high efficiency, and high reliability, this chip offers a highly competitive solution for wireless charging designs up to 15W.

About Southchip

Southchip is a leading domestic analog and embedded chip design company specializing in power management. It possesses deep technical expertise in wireless charging, charge pump fast charging, and BMS (Battery Management System) technologies. As the flagship product in its wireless charging portfolio, the SC5008QFNR strictly adheres to WPC (Wireless Power Consortium) specifications, making it an ideal choice for building high-performance transmitter modules.

Product Overview: Highly Integrated Analog Front End

The SC5008QFNR is a highly integrated analog front end (AFE) designed for wireless power transmitters. It is not merely a single MOSFET driver but integrates all the key analog components required to implement a WPC-compliant wireless power transmitter.

The device integrates a full-bridge power stage with low on-resistance (RDS(on)), a high-efficiency gate driver, a precise current sense amplifier, a stable LDO (low-dropout regulator), and circuitry for communication demodulation. This high level of integration significantly reduces the number of external components, helping engineers simplify PCB layout and accelerate time-to-market.

Key Specifications and Parameters

The SC5008QFNR is housed in a compact 3mm x 4mm QFN-19L package, making it ideal for space-constrained portable device designs. Its key electrical characteristics are as follows:

Wide input voltage range: 3.2V to 17V, compatible with 5V USB inputs and 9V/12V fast-charging adapters.

High output power: Supports power delivery up to 15W (compatible with the WPC EPP standard) while maintaining backward compatibility with 5W (BPP standard).

Low-impedance power stage: Integrates four 12mΩ (milli-ohm) power MOSFETs to effectively reduce conduction losses and improve thermal performance.

Built-in LDOs: Integrated 5V (100mA) and 3.3V (80mA) LDOs can directly power external controllers (MCUs), reducing BOM costs.

Precise current sensing: Features a built-in high-precision current sensing amplifier, which is critical for implementing Foreign Object Detection (FOD) functionality. It accurately calculates transmit power to prevent overheating caused by metallic foreign objects.

Key Technical Features

In addition to its basic hardware specifications, the SC5008QFNR excels in safety and demodulation performance:

Robust Protection Mechanisms:

1. The chip incorporates comprehensive protection circuits, including under-voltage lockout (UVLO), cycle-by-cycle overcurrent protection (OCP), short-circuit protection (SCP), and over-temperature protection (OTP). These features significantly enhance the resilience of wireless charging systems under various abnormal conditions.

2. Compatibility with Voltage and Current Demodulation:

Supports both voltage-based and current-based communication demodulation methods. This provides exceptional design flexibility, enabling seamless integration with various mainstream wireless charging solutions (MCUs) and multiple mobile phone receivers, ensuring stable communication handshaking and preventing intermittent charging.

3. Support for the Latest WPC Specifications:

Fully compatible with the WPC V1.3.2 standard, the SC5008QFNR provides a specification-compliant hardware foundation for both 5W BPP and 15W EPP, ensuring products pass Qi certification.

Typical Application Scenarios

Thanks to its 15W output capability and high integration, the SC5008QFNR is ideal for the following products:

Wireless charging pads: Single-coil or multi-coil desktop chargers for home and commercial use.

In-vehicle wireless charging: Charging modules for in-car smartphone storage areas.

Smart home and medical devices: Waterproof, sealed wireless power supply devices, such as electric toothbrushes and wireless monitors.

Consumer electronics accessories: Wireless power banks and 2-in-1 smartphone holder products.

About Mingjiada Electronics

Shenzhen Mingjiada Electronics Co., Ltd. is an electronic component distributor established in 1996. The company’s primary business includes the distribution of integrated circuits such as the SC5008QFNR, and it possesses the following characteristics:

Certifications: Certified under the ISO 9001:2014 quality management system.

Supply Chain Network: With branches in Shenzhen, Hong Kong, Japan, and other locations, the company collaborates with over 500 global brands.

Main Product Range: Includes power management ICs, MCUs, sensors, communication modules, and more, with products applied in consumer electronics, automotive, and industrial sectors.

Contact Information

Contact Person: Mr. Chen

Phone: 86-755-83294757; +86 13410018555 (Mr. Chen)

Email: sales@hkmjd.com

Address: Rooms 1239-1241, New Asia Guoli Building, Zhenzhong Road, Futian District, Shenzhen, Guangdong Province

For specific quotes and inventory information, please contact Mingjiada Electronics directly via the phone number or email address provided above.