OCVPB21-13F6 Datasheet ESD, overvoltage and overcurrent protection with charging orientation direction detection for wearables and IoT Features USB interface protection between cable and charging circuit during battery charging with: Exceeds ESD IEC 61000-4-2 level 4 protection on cable side: 15 kV contact on bridge inputs, 12 kV contact on USB data-lines inputs Detection of the polarity of the charging cable with rerouting in case of cable inversion thanks to 13 V input rectification bridge Overvoltage protection (OVP) up to 13 V Over current protection (OCP) externally adjustable from 100 mA to 500 mA Controlled inrush current Over temperature protection Under-voltage lockout 5 V USB 2.0 data lines protection and multiplexer for data line polarity correction (R = 6 typical) ON FLAG output signal (open-drain) available to inform thermal shutdown or overvoltage or overcurrent or uncompleted start-up phase Proposed in 400m pitch WLCSP package 13 bumps Operating temperature from -30C to 65C Benefits Minimal PCB footprint in wearable, IoT, mobile phone, tablet and all USB devices applications thanks to very strong integration Product status link High voltage protection management to give flexibility to customers to use low voltage charging circuit for power consumption and cost optimization OCVPB21-13F6 USB cable inversion management Complies with the following standards IEC 61000-4-2 level 4: 15kV contact on bridge inputs, 12kV contact on USB data-lines inputs JESD22-A114D level 2 Applications All wearable and IoT Description The OCVPB21-13F6 is an integrated ESD, overvoltage and overcurrent protection with an integrated input rectification bridge to give flexibility for wearable and IoT customers to manage properly any kind of USB charging conditions with or without USB cable inversion. Thanks to state of the art high voltage technology, ST can integrate in WLCSP package all required USB stressful high voltage and high current protection conditions (ESD, OVP and OCP) with control signals for wearable and IoT design optimization. DS13107 - Rev 2 - December 2020 www.st.com For further information contact your local STMicroelectronics sales office.OCVPB21-13F6 Functional description 1 Functional description OCVPB21-13F6 is a very integrated solution to be connected between USB cable and battery charge management chipset with very efficient protection to protect the system and the power management chipsets during battery charging. As described herebelow , all protection functions are available to meet all stringent conditions of power supplies but also USB cable inversion: With 13 V input rectification bridge for polarity charging detection. Both signals (USB Vcc and USB datalines) are rerouted according to following rule (see Figure 2 and Table 3 ) Table 1. Rectification bridge for polarity IN A IN B USB INC USB IND V GND D+ D- CC V GND D- D+ CC Adjustable overcurrent protection to prevent peak current to meet a wide range of IoT and wearable applications Overvoltage protection to properly meet battery charging voltage conditions and protecting from -0.3 V to 13 V DC and to 20 V ringing at plug-in Figure 1. Application block diagram RECTIF Power Bridge OUT 5V Switch Over Current IN A management Protection C OUT +13V Chipset ESD IN B Over Voltage OR Protection / UVLO R FLAG V GND ESD FLAG BAT USB INC GND BRIDGE Over Temperature USB IND Protection MUX USB DP 5V USB DM ESD USB R LIM transceiver R GND DATA LIM Table 2. Block diagram reference Reference Typical values Comment C 10 F 6V3 Low ESR capacitor OUT R From 51 to 270 1% tolerance or better recommended LIM R 100 k FLAG DS13107 - Rev 2 page 2/17 USB Connector