HUSB352A：Efficient fast-charging choice for a minimalist periphery

The HUSB352A is designed for a USB type C PD product. It can support 3 FPDOs with programmable voltage and current for different applications and 2 APDOs for PPS options. All of PDOs are fully compliant with PD3.1 Rev.1.8 specs. Besides, the HUSB352A supports multiple legacy protocols including QC2.0, QC3.0, AFC, FCP, SCP and Divider 3 mode which provide excellent compatibility for the legacy devices. It integrates an N-MOSFET to enable the power path from VBUS to VIN. Once there is any fault triggered, the HUSB352A can turn off the power path and protect the connected device. Only 0.5 mA operation current is needed for the HUSB352A. It is available in eSSOP-10L package.

Figure 1: HUSB352A Package Diagram and Demo Board

FEATURES 

• USB Type-C 2.1 and USB PD3.1 Compliant

   – Support 5 V, 9 V, 12 V FPDOs 

   – Support 2 programmable APDOs 

• Support BC1.2 DCP and HVDCP Protocols

   – BC 1.2 DCP mode 

   – Apple 5 V 2.4 A mode 

   – QC2.0/3.0 

   – AFC, FCP and LVSCP/HVSCP 

• Integrated VBUS Power Path Switch

• Support Constant Voltage Loop(CV) and Constant Current loop(CC) Operation

• Multiple Cable Compensation Options

• Integrated OVP, UVP, UVLO, OCP, FOCP and TSD Protections

• eSSOP-10L package

• ±2 kV HBM ESD Rating for USB IO Pins

Integrated low impedance VBUS MOSFET, simple peripheral circuitry

The HUSB352A has a built-in low-impedance VBUS MOSFET, which makes the entire circuit design more compact and reduces the number of external components. This design not only realizes the ultimate simplicity of peripheral circuits, but also effectively reduces the overall cost of the system. More importantly, the low impedance feature helps to reduce power loss and improve conversion efficiency, bringing users longer battery life and lower operating temperatures.

Figure 2: HUSB352A Typical Application Circuit Diagram

External current sampling resistor, supports high precision constant current and current limiting

Safety, an important aspect of charging technology that should not be ignored. the HUSB352A realizes high-precision control of charging current through the design of external current sampling resistor. It means that you can adjust the current threshold according to the specific application requirements and realize finer current management and protection functions. This design not only supports high-precision constant-current charging to ensure that the device receives a stable current supply during the charging process; it also has a current-limit protection function that can respond quickly when abnormal current is detected, effectively avoiding safety hazards such as overcurrent and short-circuit. This design not only protects the safety of the device, but also gives users more peace of mind during use.