FUSB251GEVB FUSB251 - Type-C CC and SBU Protection IC Evaluation Board User s Manual www.onsemi.com APPLICATIONS BOARD DIAGRAM EVAL BOARD USERS MANUAL Firmware download Micro USB for GUI (Do not use) Series Header switch for test Resistor array for moisture TypeC Plug TypeC Receptacle detection test Host side Device(inc. TA) side Status LED Figure 1. Applications Board Diagram Semiconductor Components Industries, LLC, 2019 1 Publication Order Number: May, 2019 Rev. 0 EVBUM2637/DFUSB251GEVB Power Configuration The FUSB251 evaluation board was designed to get generated by U4. So, in case separate external power is power from PC connection or powered externally based on needed on the VDD, connect to the middle pin of JP24 which the testing requirements. VBUS from microUSB(J3) is FUSB251 VDD pin connected. JP24 is located upper of generates V3P3 through the regulator(U3) and also VDD is FUSB251. Figure 2. Micro USB Connector and LED FUSB251 Peripheral Block The FUSB251 can fully operate from the VBUS input of The FUSB251 reference schematics is in below. CC1/2 the microB USB receptacle J3. To operate the evaluation connect to TypeC receptacle which will connect to devices board in this mode, just connect micro USB connector to J3, (ie. DRP, Charger or Sink device), CC1/2 H face to host then V3P3 LED will be turned on. Also, VDD and system (TypeC plug connector in this EVB). SBU is the VBUS MC LED will be turned on. JP22 header in below same. FM (Factory Mode) pin can be left open or tie to GND. schematics was prepared for turning off LED if its not If its left open (float) by removing header pin of JP25, the needed. VBUSC is turned on when Vbus in TypeC port has FM to SBU1 switch path is closed automatically after Power voltage. on reset or Device reset. SBU2 switch path will be open in the case. If FM pin connects to GND, SBU1/2 switch are closed to SBU1/2 H in default after device reset. The CAP pin is for IEC ESD protection, please add 0.1 F or 1 F capacitor. 50 volt rating capacitor is recommended because CAP pin is internally connected to CC and SBU through diode and there can be large voltage spike over 40 volt on top of 20 volt DC in case of surge event. INTB is open drain output which needs an external pull up (ex. 4.7 k ) to V3P3, same on SCL/SDA. Many header pins next to FUSB251 have to be populated Figure 3. www.onsemi.com 2