Datasheet TCPP01-M12 (STMicroelectronics) - 10

TCPP01-M12 Application example for USB type-C power delivery for sink (consumer), PPS compliant, without battery 5.6 Application example for USB type-C power delivery for sink (consumer), PPS compliant, without battery
In this application case, the system is solely powered via the USB-C connector.
Figure 16. Sink applications, without battery, PPS compliant 5.6.1 ESD capacitor (C3)
The system-level ESD capability of the TCPP01-M12 depends on this capacitor. The two constraints about it is a minimum of 35 V DC rated voltage and an ESL (equivalent serial inductance) as low as possible. A 50 V X7R 100 nF capacitor is strongly recommended to improve the derating performance (X7R capacitance decreases as it voltage increases). ST recommends to choose a capacitor size equal or lower than 0603.
Table 9. Capacitance specification Capacitor size Part number
0603 CC0402KRX7R9BB104 0402 GRM188R71H104KA93D
5.6.2 CC line capacitance (C1, C2)
USB PD has a specification for the total amount of capacitance for proper operation on CC lines. This specification is given here after.
Table 10. USB type-C power delivery specification Description Min. Max.
CC receiver capacitance 200 pF 600 pF Therefore, the capacitance added by the TCPP01-M12 and by the MCU or low voltage controller must fall within these limits. The next table shows the analysis involved in choosing the correct external capacitor for the system.
DS12900
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Rev 1 page 10/25
Document Outline Cover image Product status / summary Features Applications Description 1 Pinout and functions 2 TCPP01-M12 simplified internal block diagram 3 Characteristics 4 Typical electrical characteristics curves 5 Application 5.1 General information 5.2 Electrical hazards related to USB Type-C 5.2.1 CC lines short to VBUS 5.2.2 Defective charger 5.2.3 Electrostatic discharge (ESD) 5.3 USB Type-C protection 5.4 USB charging system scalability 5.5 How to handle dead battery (DB) condition with the TCPP01-M12 5.6 Application example for USB type-C power delivery for sink (consumer), PPS compliant, without battery 5.6.1 ESD capacitor (C3) 5.6.2 CC line capacitance (C1, C2) 5.6.3 Sense resistor (R1, R2) 5.6.4 N-channel MOSFET (T1) 5.6.5 Complementary products for USB dataline protection for pins DP, DM, SSRX, SSTX 5.7 Typical USB-C battery powered application 5.8 Typical USB-C source application 5.9 Sink-source application example based on STM32G0 (with two UCPD ports) 6 PCB design recommendations 7 Package information 7.1 QFN12 package information 8 Ordering information Revision history