USB power delivery controller supports standard and proprietary protocols

May 14, 2019 //By Julien Happich
USB power
Diodes Incorporated’s AP43770 USB Type-C power delivery (PD) controller is well-suited to a range of applications where USB PD is implemented, including AC adapters, power hubs, battery banks, and USB PD converters.

It features an embedded microcontroller running firmware compliant with the latest USB Type-C specification and USB Power Delivery Revision 3.0 V1.1. Support for Qualcomm

Quick Charge (QC) 4/4+ is built into the device. Additionally, the inclusion of QC3.0, QC2.0, and Battery Charging (BC) revision 1.2 and other legacy protocols with auto-detection means that backwards compatibility can be maintained with existing equipment.

The programmable power supply (PPS) feature, introduced with the latest version of the USB PD specification, is also supported by the AP43770. The PPS feature allows the output voltage to vary based on the load requirements; this is communicated using a relevant augmented power data object (APDO). This is implemented in the AP43770 through a constant current and constant voltage (CC/CV) output driver that is adjustable in 50mA steps up to 6A, and 20mV steps between 3V and 20V, respectively. The AP43770 includes the necessary support for eMarker technology, in order to detect and identify cables before power is delivered. The AP43770 comes in the TSSOP-16 package.

Diodes Incorporated - www.diodes.com


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