Carga Electrónica SMD USB | Disipador Raspberry Pi 5 | Sponsor Altium Develop

http://altium.com/yt/electgpl https://www.nextpcb.com/?code=Electgpl Design of a 100% SMD constant current electronic load, powered by USB, without an external power supply or TO-220 MOSFET. The challenge: an automotive-grade MOSFET with a top exposed pad, dissipating over 20W in the linear region using a Raspberry Pi 5 heatsink with heat pipes and a radiator. In this video, we analyze the complete circuit: ✅ Control loop with LM358 and MOSFET — why R8, R9, and C7 are critical ✅ Why the LM358 needs 9V and cannot operate with 5V from USB ✅ Shunt distributed across four 2512 resistors — why not just one ✅ Thermal verification + SOA curve from the datasheet ✅ Heatsink comparison with an infrared thermometer ✅ Real-world demo testing an LM2596 power supply from AliExpress If you enjoyed the video, please give it a like and subscribe so you don't miss any new videos! This helps the channel grow and allows us to invest in new products to show you. Video index: 00:00 – Project presentation: SMD USB electronic charging. 03:15 – Analysis and adaptation of the Raspberry Pi 5 heatsink. 06:30 – Fan and component mounting on the PCB. 12:15 – Initial power-on and power consumption tests. 17:45 – Thermal tests with an infrared camera (Stress Test). 24:50 – Efficiency comparison with different heatsinks. 29:33 – Circuit analysis and design in Altium Designer. 39:11 – Explanation of the schematic and key components (LM358). 45:30 – Power calculation and design limitations. 49:50 – Final conclusions and next steps for the project. FILES: SUBSCRIPTION: http://www.youtube.com/subscription_c... MEMBERSHIPS:    / @electgpl   Peer Review of Electronic Design Services: https://electgpl.github.io/ DONATIONS: (THANK YOU!!!) For the world: https://www.paypal.me/electgpl For Argentina: MercadoPago Alias: electgpl MAIN SPONSORS: Altium Designer: https://www.altium.com/yt/electgpl RF Technologies: https://www.rftechnologies.com.ar/ RIGOL:   / rigol_latam   FRIENDS: BARC LU4BB: https://lu4bb.com/curso-de-radioafici... SOCIAL MEDIA: Instagram:   / electgpl   #design #electronics #circuit