Chapter 1. Introduction
The growing popularity of standard USB PD3.1 chargers for mobile phones and notebook PCs spurs the demand for leveraging standard PD3.1
chargers to replace purposely and individually built chargers for battery-power electronic devices to reduce E-Waste.
The AP33772S Evaluation Board (EVB) is intended to be used as an evaluation vehicle for charging applications between a Type C Connector-
equipped Device (TCD, Energy Sink) and a Type C Connector-equipped PD3.1 compliance Charger or Adaptor (PDC, Energy Source).
Figure 1 illustrates a TCD, embedded with a PD3.1 Sink controller IC (AP33772S). This is physically connected to a PDC, embedded with a
USB PD3.1 decoder (AP43771) through a Type-C to Type-C cable. Based on the built-in USB PD3.1 compliant firmware, the AP33772S and
AP43771 pair can go through the USB PD3.1 standard attachment procedure to establish a suitable PD3.1 charging state.
The AP33772S Evaluation Board (EVB) User Guide explains a flexible I2C setting arrangement (I2C Interface Pin, I2C Register Map, and
Operations) to request the desired input voltage and input power for a typical TCD. Various system protection functions and system status
checks can also be performed by accessing the relevant I2C register contents by the TCD’s host MCU device.
Figure 1 – A typical TCD uses the AP33772S PD Sink Controller with I2C Interface to request power from a USB Type-C PD3.1/PPS
Compliance Source Adaptor
Chapter 2. AP33772S Sink Controller
2.1 Package Outline
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