# Proposed Sapphire X-Wing ## Description Robust 24V-to-5V, 2A Synchronous Buck Converter with EMI, Surge, and Noise Protection Using TPS54336A ## Project Details - **Owner:** ryanf - **Created:** 10/16/2025 - **Last Updated:** 10/16/2025 - **Visibility:** Public - **Power Budget Table:** | Input Voltage (VIN) | Output Voltage (VOUT) | Max Load Current | Nominal Load Current | Input Power | Output Power | Efficiency | |--------------------|----------------------|------------------|--------------------|-------------|--------------|-----------| | 24V | 5V | 2A | 0.4A | 11.11W | 10W | 90% | - **Output Current:** 2A - **Ready For Layout:** true - **Design Note:** All component values, placements, and noise-mitigation strategies finalized per TPS54336 datasheet recommendations; schematic ready for PCB layout. - **Output Power:** 10W - **Input Voltage:** 24V - **Final Schematic Status:** Final schematic reflecting all specified steps is complete and all connections verified as per project context. - **Input Power:** 11.11W - **EMI/ESD Protection:** Input EMI filter: ferrite bead FB1, 0.1 µF (C7), 10 µF (C8) capacitors; surge protection: TVS diode D1 SMBJ33A-13-F; overcurrent protection: resettable fuse PF1 - **Schematic Status:** Final schematic complete and verified. - **System Architecture:** ```mermaid graph LR Input24V["24V Input"] --> InputFilter["Input Filter"] InputFilter --> BuckConverter["TPS54336A Buck Converter"] BuckConverter --> OutputFilter["Output Filter"] OutputFilter --> Output5V["5V Regulated Output"] ``` - **Output Voltage:** 5V - **Input Current:** 0.463A - **Output Efficiency:** 90% - **Input Efficiency:** 90% ## Key Components ### CBOOT — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Package: SMD_0603_1608Metric - Role Details: Bootstrap capacitor for part U1, between BOOT and PH pins - Package or Case Code: C_0603_1608Metric - Part Type: Non-Polarized Capacitor - Capacitance: 0.1uF - Role: Bootstrapping},{ **Pins:** - P1 [pin 1] - P2 [pin 2] ### D1 — [SMBJ33A-13-F](https://www.flux.ai/lcsc/smbj33a-13-f~jw2e.md) - Role Details: Surge/transient protection for 24V input cable - Manufacturer Name: DIODES(美台) - Desired Temperature Rise: 50C - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-SMBJ33A-13-F_C135067.pdf - Part Type: TVS - JLCPCB Part Class: Extended Part - Safety Margin: 30% - Role: Clamping - Product Info Url: https://lcsc.com/product-detail/TVS_DIODES_SMBJ33A-13-F_SMBJ33A-13-F_C135067.html - Package or Case Code: SMB_L4.6-W3.6-LS5.3-RD - Manufacturer Part Number: SMBJ33A-13-F - LCSC Part Number: C135067 **Pins:** - A [pin 2] - K [pin 1] ### FB1 — [Generic Inductor](https://www.flux.ai/jharwinbarrozo/generic-inductor~wlv.md) - Role: Choke (EMI Filter) - Attenuation @ 150kHz: 25 dB - Part Type: Inductor - Attenuation @ 30MHz: 47 dB - Package: SMD_0603_1608Metric - Role Details: Ferrite bead for input EMI filter rated ≥2.4 A **Pins:** - P1 [pin 1] - P2 [pin 2] ### PF1 — [MF-MSMF110/24X-2](https://www.flux.ai/adrian95/mf-msmf11024x-2~gk0.md) - Role: Protection - Manufacturer Part Number: MF-MSMF110/24X-2 - Part Type: Fuse - Datasheet URL: https://www.bourns.com/docs/product-datasheets/mf-msmf.pdf - Manufacturer Name: Bourns Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Overcurrent protection for VIN input **Pins:** - P1 [pin 1] - P2 [pin 2] ### U1 — [TPS54336ADRCR](https://www.flux.ai/lcsc/tps54336adrcr~e2nh.md) - VIN: 23–25V - Role Details: Main 24V-to-5V, 2A synchronous buck converter IC - Package or Case Code: VSON-10_L3.0-W3.0-P0.50-TL-EP - Part Type: DC-DC Converters - JLCPCB Part Class: Extended Part - fSW: 570kHz - VOUT: 5V - IOUT Nominal: 400mA - Manufacturer Name: TI(德州仪器) - Gain Margin: 10 dB - Phase Margin: 60° - Manufacturer Part Number: TPS54336ADRCR - Role: Power Conversion - Vripple: ≤5% - IOUT Range: 100mA–2A - LCSC Part Number: C2070667 **Pins:** - BOOT [pin 9] - COMP [pin 7] - EN [pin 8] - EP [pin 11] - GND [pin 3] - GND [pin 4] - GND [pin 5] - PH [pin 2] - SS [pin 10] - VIN [pin 1] - VSENSE [pin 6] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/ryanf/proposed-sapphire-x-wing~i5n](https://www.flux.ai/ryanf/proposed-sapphire-x-wing~i5n).* --- *Generated from [https://www.flux.ai/ryanf/proposed-sapphire-x-wing~i5n](https://www.flux.ai/ryanf/proposed-sapphire-x-wing~i5n)*