# 60V Automotive 24V 5A Converter ## Description 60 V automotive-style 24 V / 5 A DC-DC converter with cleaned J2 input path: J2 raw input through F1 fuse, SMAJ58A TVS, Q4 reverse-polarity MOSFET, then VIN_60V_PROTECTED handoff into the converter and LT4363 hot-swap stage. ## Project Details - **Owner:** ruyan-os - **Created:** 4/6/2026 - **Last Updated:** 4/7/2026 - **Visibility:** Public - **System Architecture:** flowchart TD VIN[60V Automotive Input] --> FUSE[Input Fuse] FUSE --> REV[Reverse Polarity MOSFET Stage] REV --> TVS[TVS Surge Clamp] TVS --> EMI[Input Filter and Bulk Caps] EMI --> BUCK[60V to 24V Buck Converter] BUCK --> VOUT[24V 5A Output] TVS --> GND[GND] EMI --> GND BUCK --> GND ## Key Components ### D2 — [MBR10100DT](https://www.flux.ai/lcsc/mbr10100dt.md) - Manufacturer Name: JUXING(钜兴) - Role Details: 100 V 10 A catch diode for non-synchronous buck stage - LCSC Part Number: C3011041 - Role: Freewheel Diode - Package or Case Code: TO-252-3_L6.5-W6.1-P4.58-LS9.9-BR - JLCPCB Part Class: Extended Part - Part Type: Schottky Barrier Diodes (SBD) - Manufacturer Part Number: MBR10100DT - Package: TO-252 **Pins:** - A [pin 3] - A [pin 1] - K [pin 2] ### F1 — [0685P7000-01](https://www.flux.ai/adrian95/0685p7000-01.md) - Part Type: Fuse - Datasheet URL: https://belfuse.com/media/datasheets/products/circuit-protection/ds-CP-0685P-series.pdf - Manufacturer Part Number: 0685P7000-01 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Bel Fuse Inc. - Role: Fuse - Role Details: Series input fuse for J2 60 V nominal input protection - Package: 1206 **Pins:** - P1 [pin 1] - P2 [pin 2] ### IC1 — [LT4363IMS-2#PBF](https://www.flux.ai/adrian95/lt4363ims-2pbf.md) - Role Details: Controls reverse-polarity, surge, inrush, and overcurrent protection on the 60 V input - Role: Input Protection Controller - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/4363fb.pdf - Manufacturer Part Number: LT4363IMS-2#PBF - Manufacturer Name: Analog Devices Inc. - Package: MSOP-12 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit **Pins:** - ~FLT [pin 10] - ~SHDN [pin 6] - ENOUT [pin 11] - FB [pin 1] - GATE [pin 4] - GND [pin 9] - OUT [pin 2] - OV [pin 7] - SNS [pin 3] - TMR [pin 12] - UV [pin 8] - VCC [pin 5] ### J1 — [282837-2](https://www.flux.ai/vasy_skral/282837-2.md) - Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=282837&DocType=Customer+Drawing&DocLang=English - Role: Input Connector - Package: 5.08mm TH - Manufacturer Name: TE Connectivity AMP Connectors - Manufacturer Part Number: 282837-2 - Role Details: 60 V nominal automotive supply input - Part Type: Connector **Pins:** - 1 [pin 1] - 2 [pin 2] ### J2 — [282837-2](https://www.flux.ai/vasy_skral/282837-2.md) - Manufacturer Part Number: 282837-2 - Manufacturer Name: TE Connectivity AMP Connectors - Role Details: 60 V nominal automotive-style supply input with fuse, reverse polarity, and surge protection - Package: 5.08mm TH - Part Type: Connector - Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=282837&DocType=Customer+Drawing&DocLang=English - Role: Input Connector **Pins:** - 1 [pin 1] - 2 [pin 2] ### Q1 — [CSD19531Q5AT](https://www.flux.ai/adrian95/csd19531q5at.md) - Package: 8-VSONP 5x6 - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 100 V N-channel surge and reverse-polarity blocking element - Manufacturer Part Number: CSD19531Q5AT - Manufacturer Name: Texas Instruments - Datasheet URL: https://www.ti.com/lit/ds/symlink/csd19531q5a.pdf - Role: Pass MOSFET - Part Type: Transistor **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q2 — [CSD19531Q5AT](https://www.flux.ai/adrian95/csd19531q5at.md) - Package: 8-VSONP 5x6 - License: https://creativecommons.org/licenses/by/4.0/ - Role: Pass MOSFET - Role Details: 100 V N-channel surge and reverse-polarity blocking element - Manufacturer Name: Texas Instruments - Manufacturer Part Number: CSD19531Q5AT - Part Type: Transistor - Datasheet URL: https://www.ti.com/lit/ds/symlink/csd19531q5a.pdf **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q3 — [CSD19537Q3T](https://www.flux.ai/jecstronic/csd19537q3t.md) - Package: VSON-8 3.3x3.3 - Role Details: 100 V high-side switching MOSFET for LM5088 stage - Part Type: Transistor - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.ti.com/lit/ds/symlink/csd19537q3.pdf - Manufacturer Part Number: CSD19537Q3T - Role: Buck Switch - Manufacturer Name: Texas Instruments **Pins:** - D [pin 5_8] - G [pin 4] - S [pin 3] - S [pin 1] - S [pin 2] ### Q4 — [QM6015D](https://www.flux.ai/kicad-part-library/qm6015d.md) - Role Details: P-channel MOSFET ideal-diode reverse-polarity stage at J2 input - Manufacturer Part Number: QM6015D - Role: Reverse Protection - Package: TO-252 - Datasheet URL: http://www.jaolen.com/images/pdf/QM6015D.pdf - Package or Case Code: TO-252-2 **Pins:** - D [pin 2] - G [pin 1] - S [pin 3] ### U1 — [LM5088-2](https://www.flux.ai/kicad-part-library/lm5088-2.md) - Package or Case Code: HTSSOP-16-1EP_4.4x5mm_P0.65mm_EP3.4x5mm_Mask3x3mm_ThermalVias - Role: Buck Controller - Role Details: Converts protected 60 V input to regulated 24 V output at 5 A - Manufacturer Name: Texas Instruments Inc. - Manufacturer Part Number: LM5088-2 - Package: HTSSOP-16-1EP - Datasheet URL: http://www.ti.com/lit/ds/symlink/lm5088.pdf **Pins:** - BOOT [pin 15] - COMP [pin 7] - CS [pin 12] - CSG [pin 11] - EN [pin 2] - FB [pin 8] - GND [pin 6] - HG [pin 14] - OUT [pin 9] - PGND [pin 17] - RAMP [pin 4] - RES [pin 10] - RT/SYNC [pin 5] - SS [pin 3] - SW [pin 13] - VCC [pin 16] - VIN [pin 1] ### U2 — [SMAJ58A R3G](https://www.flux.ai/lcsc/smaj58a-r3g.md) - LCSC Part Number: C2594337 - Part Type: TVS - Role Details: SMAJ58A surge clamp on protected J2 input rail - Role: TVS Clamp - Package or Case Code: SMA_L4.4-W2.6-LS5.1-RD - Manufacturer Part Number: SMAJ58A R3G - Manufacturer Name: Taiwan Semiconductor(台湾半导体) - Package: SMA **Pins:** - A [pin 2] - C [pin 1] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/ruyan-os/60v-automotive-24v-5a-converter](https://www.flux.ai/ruyan-os/60v-automotive-24v-5a-converter).* --- *Generated from [https://www.flux.ai/ruyan-os/60v-automotive-24v-5a-converter](https://www.flux.ai/ruyan-os/60v-automotive-24v-5a-converter)*