Functional description

STUSB4700

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DocID030193 Rev 2

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Functional description

The STUSB4700 is an autonomous USB power delivery controller optimized as a provider.

It offers an open drain GPIO interface to make direct interconnection with a power

regulation stage.

The STUSB4700 offers the benefits of a full hardware USB PD stack allowing robust and

safe USB PD negotiation in line with USB PD standard. The STUSB4700 is ideal for

provider applications in which digital or software intelligence is limited or missing.

The STUSB4700 main functions are:



Detect the connection between two USB ports (attach detection)



Establish a valid host to device connection





Resolve cable orientation



Negotiate a USB power delivery contract with a PD capable device



Configure the power source accordingly



safety

Additionally, the STUSB4700 offers 5 customizable power data objects (PDOs), 5 general

purpose I/Os, an integrated discharge path, and is natively robust to high voltage peaks.

Figure 1: Functional block diagram