AP53781

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Description

The AP53781 is a highly integrated USB Type-C ® PD3.2 Dual-Role Power (DRP) controller to support Extended Power Range (EPR)/ Adjustable Voltage Supply (AVS) up to 28V and Standard Power Range (SPR) up to 21V.

The AP53781 can act as a power consumer by requesting power from a PD3.1 compliant adaptor and can also act as a power provider to supply a Type-C connector-equipped device (TCD).

The AP53781 could consume as low as 50µA during the power-down mode. The AP53781 is operating in a system without an MCU. To be a power consumer, its desired Request Data Object (RDO) can be selected by the correspondence resistance values on the VSEL and ISEL pins for target voltage and current, respectively. To be a power provider, its Power Data Object (PDO) capability can be selected from a predetermined 8 power profiles by a suitable resistance on the PDOSEL pin.

Meanwhile, the AP53781 integrates Rp/Rd termination resistors and switches for DRP control. It has QC2.0/3.0 functions and dead-battery mode during the sink role. Also, the VFB feedback control for external DC/DC controller is provided during the source role. The AP53781 operates from 3.6V up to 28V with low-side current sense topology.

The AP53781 offers short protection between Configuration Channel (CC1/CC2) pins to adjacent high-voltage pin up to 34V. The built-in firmware of the AP53781 offers comprehensive safety protection schemes, including overvoltage protection (OVP), undervoltage protection (UVP), and overcurrent protection (OCP).  

Feature(s)

• USB PD3.1 v1.8 Certified with TID: 11689
• Support Autonomous DRP Control
• Support EPR/AVS up to 28V with 100mV/Step
• Support SPR up to 21V
• Power-Down Consumption as Low as 50µA
• Source PDO Capability Selected Through External Resistor Setting
• Sink RDO Voltage/Current Selected Through External Resistors Settings
• Support QC2.0/3.0 Either for Sink or Source Role
• Support Gate Drivers for nMOS VBUS Power Switch
• Support Analog VFB Feedback for External DC/DC
• Operating Voltage 3.6V to 28V with Low-Side Current Sense
• Support VBUS and VOUT Discharge Paths
• Support Dead-Battery Mode
• Support OVP/UVP/OCP with Auto Restart
• VBUS Short Protection on CC1/CC2 Pins up to 34V
• VBUS Short Protection on DP/DN Pins up to 24V
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
• For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Application(s)

• Power banks
• Power tools
• Wireless speakers
• E-bikes
• POS terminals
• Portable displays