1C1A desktop charger based on IP6520 and IP6505 standards

The IP6520
is a step-down converter with integrated synchronous switching, supporting multiple fast charging protocols, Type-C output, and USB PD2.0/PD3.0 (PPS) protocols. It provides a complete solution for car chargers, fast charging adapters, and smart power strips. The IP6520 has a built-in power MOSFET, an input voltage range of 7.1V to 32V, and an output voltage range of 3V to 12V, providing a maximum output power of 25W. It automatically adjusts the output voltage and current according to the detected fast charging protocol. Typical output voltages and currents are: 5V/3A, 9V/2.5A, and 12V/2A. The IP6520's PD output has CV/CC characteristics. When the output current is less than the set value, it outputs in CV mode with a constant output voltage; when the output current is greater than the set value, it outputs in CC mode with a reduced output voltage. The IP6520 has an automatic overcurrent point adjustment function, supporting a maximum output of 10V/2.5A after a successful high-voltage SCP and fast charging protocol handshake. When the device connected to the IP6520's Type-C interface supports high-voltage SCP, it prioritizes outputting high-voltage SCP, resulting in higher charging power compared to PD output. The IP6520's output voltage features line compensation; as the output current increases, the output voltage increases accordingly to compensate for voltage drops caused by connection line impedance. The IP6520 has a soft-start function to prevent inrush current from affecting the stability of the input power supply. The IP6520 supports Type-C interface output and integrates various fast charging protocols. It can automatically identify the fast charging protocol supported by the connected device via CC1/CC2 or DP/DM, and then automatically adjust the output voltage and current. Supported fast charging protocols include: DCP (Apple and BC1.2), Qualcomm QC2.0/QC3.0 (class A), Huawei fast charging protocols FCP and HVSCP, Samsung fast charging protocol AFC (MAX 12V), and USB PD2.0/PD3.0 (PPS) output protocols. The IP6520 offers multiple protection functions, including input overvoltage and undervoltage protection, and output overcurrent, overvoltage, undervoltage, and short-circuit protection.
It is packaged in an ESOP-8 package and
 
supports DCP/QC2.0/QC3.0/FCP/HVSCP/AFC/MTK PE/PD3.0/PPS with a maximum power output of 25W. The IP6505 is an integrated synchronous switch buck converter supporting 11 fast charging protocols, providing a complete solution for car chargers, fast charging adapters, and smart power strips.
 
 
It features
a built-in power MOSFET, an input voltage range of 4.5V to 32V, an output voltage range of 3V to 12V, and a maximum output power of 24W. It automatically adjusts the output voltage and current based on the detected fast charging protocol. Typical output voltages and currents are: 4V@3.6A, 5V@3.4A, 7V@3A, 9V@2.5A, and 12V@2A. The IP6505 boasts a buck conversion efficiency of up to 97%. Its output features CV/CC characteristics: when the output current is less than a set value, it operates in CV mode with a constant output voltage; when the output current exceeds the set value, it operates in CC mode with a reduced output voltage. The IP6505's output voltage includes line compensation; as the output current increases, the output voltage increases accordingly to compensate for voltage drops caused by connection impedance. The IP6505 features soft-start functionality to prevent inrush current from affecting the stability of the input power supply. It integrates various fast charging protocols and can automatically identify the fast charging protocols supported by the connected device via DP/DM, then automatically adjust the output voltage and current. Supported fast charging protocols include: DCP (Apple, Samsung, and BC1.2), Qualcomm QC2.0/QC3.0 (class A), MTK PE1.1/2.0, Huawei FCP/SCP, Samsung AFC, and Spreadtrum SFCP. The IP6505 offers multiple protection functions, including input overvoltage and undervoltage protection, and output overcurrent, overvoltage, undervoltage, and short-circuit protection.
The IP6505 uses an ESOP-8 package.
 
It supports DCP/QC2.0/QC3.0/MTK PE1.1/PE2.0/FCP/SCP/AFC/SFCP with a maximum power of 24W.
 
For this project
, PCB1 will be made of FR-4 material, and PCB2 (empty board) will be made of aluminum substrate. A frosted acrylic panel is recommended.
You will need 4 M2 screws (5mm long), 4 M2 double-ended knurled screw posts (11mm long), 8 M2 single-ended knurled screw posts (3mm thread, 3mm body), and one 3.5mm thick thermal pad.
Installation instructions are omitted here.