DC-DC SMPS Design

@jb095

Hello, This project fits well with my power electronics and embedded hardware design background. I have experience designing power-management and control circuits involving multi-rail supplies, regulator control, protection circuits, and mixed-voltage embedded systems. For your SMPS requirement, I can assist with: • 24V / 10A power supply architecture design • Control logic for switching between 18V and 24V based on signal A/B • Common switched 12V rail for pump control • Separate constant 24V rail for display supply • Protection considerations including current handling, thermal margins, and regulator stability My approach would first evaluate whether this is best implemented through controlled feedback switching in a primary SMPS stage or by using regulated multi-output architecture, then optimize for reliability and efficiency. I have practical experience with voltage regulators, power routing, sensing, and PCB implementation for embedded power systems, including motor and mixed-voltage applications. I’d be glad to review current/load details and propose a suitable topology. Best regards.

@Ryan15222

Hi, I’m interested in designing your 24V/10A SMPS with control logic. Your requirement—multiple controlled output voltages (18V/24V), signal-based switching, and parallel outputs—is very feasible with a clean and robust power + control architecture. Understanding of your requirement Input A (4.7V) → Output switches to 18V Input B (4.7V) → Output switches to 24V 12V output (pump) active with both A & B Constant 24V output for display (independent) Proposed approach Design a primary 24V SMPS (≥10A) as the main rail Generate 18V via synchronous buck converter controlled by logic input A Use MOSFET/relay-based switching or analog feedback control to select 18V / 24V output cleanly Dedicated 12V buck converter enabled when A or B is active (OR logic) Proper isolation, filtering, and protection: Overcurrent / short-circuit protection Thermal protection EMI filtering (important for SMPS stability) Deliverables Full schematic + PCB layout Gerber files (manufacturing-ready) BOM with exact components Control logic documentation Debug support during prototype Relevant experience SMPS and DC-DC converter design (buck/boost) Embedded control and power electronics Industrial power systems with multi-output regulation I focus on stable, safe, and production-ready designs, especially for power electronics where reliability is critical. I’d be happy to confirm load behavior (pump current, transient response) before finalizing architecture. Best regards,

@shuvadeep003

Hi there, I reviewed your requirement and the diagram, and this is a well-defined SMPS + control circuit project. I can help you design a reliable and safe system that meets all your switching conditions. Understanding of your requirement: * Main SMPS: 24V up to 10A * Input A (4.7V): output switches to 18V * Input B (4.7V): output switches to 24V * 12V output for pump: active with both A and B * Separate constant 24V output for display My approach: * Design a primary 24V SMPS (isolated, stable up to 10A) * Use a controlled DC-DC stage (buck/feedback switching) to toggle between 18V and 24V based on input signals * Implement logic control (opto-isolation or transistor/MOSFET switching) for safe signal handling * Dedicated 12V regulator line for pump with proper current handling * Separate regulated 24V rail for display to avoid fluctuation during switching * Full protection: overcurrent, short-circuit, thermal, and input protection Experience: I’ve worked on power supply design, embedded control circuits, and PCB layouts involving SMPS, DC-DC converters, and mixed-signal control. I focus on real-world reliability, noise reduction, and safe isolation. Deliverables: * Complete schematic * PCB layout (manufacturing-ready) * BOM with optimized components * Design notes for testing and calibration Availability: Immediate Happy to discuss load conditions and enclosure constraints before finalizing the design. Best regards, Shuvadeep

@Ramkrishna1819

Hello, I reviewed your requirement for a 24V 10A SMPS with control logic, and I clearly understand the system behavior: * 18V output when A (4.7V) is active * 24V output when B (4.7V) is active * 12V pump ON when A OR B is active * Constant 24V supply for display I can design a complete, reliable solution including: * Isolated 220V AC to 24V SMPS * Efficient DC-DC converters for 18V and 12V rails * MOSFET-based switching using 4.7V control signals * Proper OR logic for pump control * Full protection (flyback diode, OCP, thermal considerations) Deliverables: * Schematic + PCB layout * BOM (cost-optimized) * Simulation support * Design explanation I can also share a quick block-level schematic within a few hours to demonstrate the approach. Let’s discuss your constraints (budget, size, components), and I’ll start immediately. Regards, Ramakrishna

@Purushotham2001

Hi, I’ve reviewed your requirement for a DC-DC converter with controlled outputs, and I can handle this end-to-end with a reliable and practical design approach. I have 8+ years of experience in embedded systems and electronics design, currently working as a Lead Research Engineer. My work involves designing complete systems including power stages, control logic, and production-ready PCBs. For your project, I can design: A stable DC-DC conversion stage capable of delivering the required power Controlled output switching between 18V and 24V based on input signals A dedicated 12V rail for the pump with proper logic control (A OR B condition) A constant 24V output for display operation Clean and reliable control circuitry for signal handling and switching I focus on building designs that are efficient, thermally stable, and manufacturable. Proper component selection, protection mechanisms, and layout practices will be followed to ensure long-term reliability. You will receive a complete production-ready package including schematic, PCB layout, Gerbers, BOM, pick-and-place files, and assembly documentation. I will also support one revision cycle after testing. Let me know the input voltage range and any size or efficiency constraints so I can finalize the design approach.

@siddharths313

I was worked on various topologies like LLC, flyback, buck and boost . I designed charger based on LLC , boost pfc and for auxiliary was flyback . Im working as a power electronic engineer with a 5 year of experience in Hardware design.

@jayb917

Hi, I can help you with the SMPS and control circuit design for your requirement. I understand you need a system where the output changes between 18V and 24V based on input signals, along with a separate 12V switching output and a constant 24V supply. I am a final-year Electronics and Telecommunication student with hands-on experience in PCB design and embedded systems. I have worked on power supply sections, microcontroller-based circuits, and PCB layout using KiCad and Altium. I also have experience in testing and debugging circuits during my internship, which helps me understand real-world behavior. I can design the circuit with proper switching logic and ensure stable outputs. I will also focus on safe current handling (up to 10A), proper component selection, and clean PCB layout. Let me know if you can share more details about input supply and size constraints.

@HVSPCB

Hi, I have 16+ years of experience in PCB design, including 4-layer high-power and 500+ component boards. I can help you with: - Clean placement optimization - Power integrity and thermal design - Reliable manufacturable layout I have worked on similar complex industrial designs. Let’s discuss your requirements.