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Https://www.st.com/resource/en/datasheet/stm32wb55vc.pdf ST WLCSP-100, ST die ID 482, 4.2x3.95mm, 90 Ball, X-staggered 21x11 Layout, 0.4mm Pitch, https://www.st.com/resource/en/datasheet/stm32g071eb.pdf ST WLCSP-36, ST die ID 450, 4.96x4.64mm, 156 Ball, 13x12 Layout, 0.35mm Pitch, http://www.latticesemi.com/view_document?document_id=213 Analog Devices KS-4 (like EIAJ SC-82 Infineon PG-HDSOP-10-1 (DDPAK), 20.96x6.5x2.3mm, slug up (https://www.infineon.com/cms/en/product/packages/PG-HDSOP/PG-HDSOP-10-1/ HSOF-8-1 [TOLL] power MOSFET (http://www.infineon.com/cms/en/product/packages/PG-HSOF/PG-HSOF-8-2/, https://www.infineon.com/dgdl/Infineon-ApplicationNote_600V_CoolMOS_C7_Gold_TOLL-AN-v01_00-EN.pdf?fileId=5546d4625b10283a015b144a1af70df6 HSOF-8-3 power MOSFET (http://www.infineon.com/cms/en/product/packages/PG-HSOF/PG-HSOF-8-2/, https://www.infineon.com/dgdl/Infineon-ApplicationNote_600V_CoolMOS_C7_Gold_TOLL-AN-v01_00-EN.pdf?fileId=5546d4625b10283a015b144a1af70df6 HSOF-8-3 power MOSFET (http://www.infineon.com/cms/en/product/packages/PG-HSOF/PG-HSOF-8-3/ Infineon PG-TO-220-7, Tab as Pin 8, see e.g. Https://www.infineon.com/dgdl/Infineon-BTS50055-1TMC-DS-v01_00-EN.pdf?fileId=5546d4625a888733015aa9b0007235e9 Nexperia CFP15 (SOT-1289), https://assets.nexperia.com/documents/outline-drawing/SOT1289.pdf On Semiconductor ECH8, https://www.onsemi.com/pub/Collateral/318BF.PDF Low Profile Inductor, Vishay, IHLP series, 12.7mmx12.7mm Inductor, Vishay, IHLP series, 10.2mmx10.2mm Inductor, Wuerth Elektronik, Wuerth_HCI-1350, 12.8mmx12.8mm Inductor, Wuerth Elektronik, WE-DD, SMD, Typ L, , https://katalog.we-online.com/pbs/datasheet/74477510.pdf Choke Power Inductor WE-PD2 TypL Wuerth Power Inductor, body 41x36mm, https://www.we-online.com/catalog/en/WE-HCFT#/articles/WE-HCFT-3540 3.2mm x 2.8mm PLCC4 LED, https://www.we-online.de/katalog/datasheet/150141M173100.pdf LED RGB APFA3010 KINGBRIGHT 3x1.5mm Dual LED SMD 0603 (1608 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size from: http://datasheets.avx.com/NOS.pdf), generated with kicad-footprint-generator JST PUD series connector, S14B-XASK-1N-BN (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf), generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 6 times 0.1 mm² wires, reinforced insulation, conductor diameter 0.9mm, outer diameter 4.4mm, size source Multi-Contact FLEXI-E 0.15 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with StandardBox.py) (https://product.tdk.com/info/en/catalog/datasheets/inductor_automotive_power_slf12565-h_en.pdf Inductor, TDK, SLF7032, 7.0mmx7.0mm (Script generated with kicad-footprint-generator JST XH series connector, B05B-XASK-1-A (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py SOIC, 16 Pin (https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/lfcspcp/cp-16/cp-16-40.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-144-02-xx-DV-TE, 44 Pins (http://www.molex.com/pdm_docs/sd/5024301410_sd.pdf), generated with kicad-footprint-generator Soldered wire connection with feed through strain relief, for a 1uF capacitor; expand a bit, but also size it for practice ** about $3 each. Replacing LEDs in many places might be more robust and easier to adjust CV output range, switch between 5v and 2.5v max (or whatever is configured). Momentary-normal-off pushbutton to manually.

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