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STUSB4500 Folha de dados(PDF) 2 Page - STMicroelectronics |
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STUSB4500 Folha de dados(HTML) 2 Page - STMicroelectronics |
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2 / 41 page  1 Functional description The STUSB4500 is a USB Type-C™ and power delivery controller IC for sink applications. It is able to negotiate a power delivery contract with a source without MCU support (auto-run mode). It relies on proprietary algorithms and configurable PDO (power data objects) thanks to an integrated non-volatile memory. It supports dead battery mode to allow a system to be powered from an external source directly. Combined with its capability to negotiate directly a power contract, the STUSB4500 is the ideal controller device for autonomous systems requiring high power charging profile to be fully operational. The STUSB4500 major role is to: 1. Detect the connection between two USB Type-C ports (attach detection) 2. Establish a valid source-to-sink connection 3. Determine the attached device mode: source or debug accessory 4. Resolve cable orientation and twist connections to establish USB data routing (MUX control) 5. Negotiate a USB power delivery (PD) contract with a PD capable source device 6. Configure the incoming VBUS power path and the charging paths accordingly 7. Monitor the VBUS power path and manage the VBUS voltage transitions 8. Handle the high voltage protections The STUSB4500 also provides: • Dead battery mode • PDO (power data object) customization through NVM • Internal and/or external VBUS discharge paths • Dual high power charging path support • Debug accessory mode detection • Customization of the device configuration through NVM to support specific applications 1.1 Block overview Figure 1. Functional block diagram GND SCL SDA CC2 CC1 VDD Physical Layer POR VBUS_VS_DISCH voltage monitoring VBUS_EN_SNK ADDR[1..0] Policy Engine DISCH CC1DB CC2DB RESET ALERT CC line access ATTACH POWER_OK2 GPIO VSYS A_B_SIDE Protocol Layer Device Policy Manager Port status VBUS status Internal supply I²C slave Control Port C controller POWER_OK3 STUSB4500 Functional description DS12499 - Rev 2 page 2/41 |
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