HSP series portfolio overview High-speed port ESD protection Is this presentation suited for you? Where do you stand with high-speed port protection? Beginner? Intermediate? Advanced? I am not familiar with this subject. I am in the discovery phase and would like an overview and a basic understanding of the technology. I have a basic understanding of this subject. I would like to go deeper in details and tackle more aspects of this subject. I am very familiar with this subject. I would like to deepen my knowledge and become an expert. Click here to continue to next slide Click here to open new presentation Click here to open new presentation Overview Basic In depth 2 ESD protection is needed for Advanced technology with very thin lithography and gate oxide highly vulnerable to ESD Integrated electronics systems with PCBs having a high component density facilitate ESD coupling and propagation Core ICs such as microcontrollers, micro-processors, transceivers, etc. IC manufacturers reluctant to make robust embedded ESD protection diodes that would require a significant active area of their advanced and expensive technology. When the application uses RF (Wi-Fi or Bluetooth), a common-mode filter is required, in addition to ESD protection, to avoid RF performance decrease due to the EMI generated by the high-speed link. 3 Dedicated to high-speed ports Ultra-low capacitance • The parasitic capacitance of ESD protection devices must be low enough to allow highspeed signals to be transmitted without degradation. • A high parasitic capacitance of the ESD protection devices would increase too much the signal rise/fall time and prevent the communication. Example of the impact of parasitic capacitance on an HDMI signal simulated with discrete capacitance Time domain Fall time too HIGH Rise time too HIGH Frequency domain Bandwidth is too narrow 4 Dedicated to high-speed ports Flow-through layout • To make the design and PCB layout easier and simpler • To preserve the symmetry between the 2 lines of the differential lane High-speed port protection must be flow-through HSP protection D+ D+ D- DVia to GND Via to GND 5 Clamping voltage ESD response to IEC 61000-4-2 (+8 kV contact discharge) Example of HSP051-4M10 • The quality of protection lies in the clamping voltage of the ESD diodes • It is measured after 30 ns (the first peak voltage is in the nanosecond range; too fast to be significant) • HSP protection devices can clamp 8000 V ESD strikes down to 13 V ! IC to protect Clamping voltage 13 V after 30 ns 8000 V ESD IEC 61000-4-2 ESD diode of HSP series 6 Main selection criteria • VBR Breakdown voltage higher than operating signal Above this voltage, the ESD protection devices will enter Clamping mode • fc Cut-off frequency higher than high-speed signal bandwidth defined by the rise time value • CI/O to GND Low parasitic capacitance (a consequence of high bandwidth) minimizing the impact on transmission line impedance Example of HSP051-4M10 • Rd Dynamic resistance & VCL Clamping voltage to keep the protected IC safe 7 High-speed port protection package offer 1 mm² 2 mm² 5 mm² 2-line packages 0.8 mm² 1.45 mm² 2.56 mm² 4-line packages 0.72 mm² 1.9 mm² 2.5 mm² 8-line package 4.95 mm² 8 8 lines 4 lines 2 lines High-speed port protection portfolio HSP061-2N4 µQFN-4L 400-µm pitch Size: 1 x 0.8 x 0.5 mm HSP062-2M6 µQFN-6L 500-µm pitch Size: 1 x 1.45 x 0.55 mm HSP062-2P6 SOT-666 Size: 1.6 x 1.6 x 0.52 mm HSP061-4F4 Flip Chip / WLCSP 6 bumps – 300-µm pitch Size: 0.6 x 1.2 x 0.38 mm HSP051-4N10 DFN-10L 400-µm pitch Size: 1 x 1.9 x 0.3 mm HSP051-4M10 DFN-10L 500-µm pitch Size: 1 x 2.5 x 0.48 mm HSP061-8M16 DFN-16L 400-µm pitch Size: 1.5 x 3.3 x 0.55 mm 9 Let’s go further 10 Intermediate product presentation soon available: ‘Understanding ST’s HSP series specification’ Basic presentation Application Notes: In-depth information Selection HSP06x-2 high-speed line protection on HDMI 1.4 link (AN4138) HSP061-8M16 high-speed line protection on HDMI 1.4 link (AN3357) TVS short-pulse dynamic resistance measurement ... (AN4022) IEC 61000-4-2 standard testing (AN3353) Selection guide [pdf] www.st.com/hsp-protection 11 Thank you