AP53781 and AP53782 USB PD Dual-Role Power (DRP) Controllers

The Diodes Inc. AP53781 and AP53782 are USB Type-C® power delivery (PD) EPR DRP controllers. These devices are embedded into equipment that use a USB Type-C socket as the power supply source. These products are compliant with USB PD specification Rev. 3.1 V1.8 and support EPR/AVS up to 28 V.

Both devices have built-in standard application firmware that automatically acts as a source role or sink role. They both have gate drivers for NMOS V_BUS power switches. The AP53781 has a preloaded PDO (power data object) and RDO (request data object) menu for the source and sink roles, respectively, making it simpler to use. The AP53782 includes an I²C interface that provides greater flexibility for more sophisticated designs.

The sink role in the AP53781 RDO menu consists of eight different output voltages and eight different output currents. The PDO in the source menu has eight PDO power profiles. Both menus are set by external resistors. The AP53782, using an I²C interface and GPIO pins, communicates with a host MCU to determine a more flexible power profile for the sink or source roles, as well as other intelligent power-management functions.

The AP53781 is available in the small footprint W-QFN3030-16 (3 mm x 3 mm) package, and the AP53782 is available in the small footprint W-QFN4040-24 (4 mm x 4 mm) package. Both operate across the -40°C to +125°C junction temperature range.