The FUSB15101 is a highly integrated USB Power Delivery (PD)

power source controller that can control the opto−coupler in the

secondary side of an AC−DC adapter or a DC−DC port power

regulator.

The FUSB15101 enables a complete solution for USB power

sources through optimized hardware peripherals and complete

open−source embedded firmware all in a compact solution.

It integrates a highly efficient Arm Cortex−M0+ processor with

custom designed peripherals to seamlessly support USB PD 3.1 source

applications. The FUSB15101 supports the PPS specification in USB

PD, with a minimum of 3.3 V and a maximum of 21 V output voltage

control. It includes Constant Voltage (CV) and Constant Current Limit

(CL) control blocks, various protection mechanisms and high voltage

tolerance on connector pins.

Key Features

• 32−bit Arm Cortex−M0+ Processor

• 32 KB OTP (One Time Programmable) Program Memory

• USB PD 3.1 with PPS Support

 Power Management Unit with VIN Support from 3.3 V to 24 V

 Integrated VCONN Supply for Interrogating E−Marked Cables

• Idle and Sleep Modes to Meet CoC and DoE Requirements

• Peripherals

 USB Type−C / PD Detection and Communication Layer

 VBUS NMOS Gate Driver for Load Switch Control

 VBUS Discharge Functionality

 Programmable Constant Voltage & Constant Current Control

 Two 10−bit DAC’s for Precise Voltage and Current Control

 Two NTC Temperature Measurements

 10−bit ADC for Voltage, Current and Temperature Reporting

 Two General Purpose 32−bit Timers

 Watchdog Timer (WDT)

 I2C Master/Slave Peripheral

 UART on D+/− Pins

• Output Fault Protection

 Over−Voltage

 Under−Voltage

 Over−Current

 Over−Temperature

• 20−pin QFN Package (4 mm x 4 mm, 0.5 P)

Typical Applications

• Wall Chargers for Mobile Phones and

Tablets and Computing Devices

• AC−DC USB PD Compliant Adapters

• Power Banks

• Cigarette Lighter Adapters