Multi-Output Medical Device PCB Design
Budget: $10 – $30 USD
Medical Device Power Supply PCB Design
Project Description
I am looking for an experienced PCB designer to develop a reliable multi-output power supply PCB for use in a medical device.
The design should prioritize reliability, low noise, power integrity, protection, thermal performance, and EMI/EMC-conscious layout practices. The PCB should be suitable for future compliance-oriented product development and use only RoHS-compliant components
Input Power
Input Supply: 12V DC, 5A
PCB-mounted DC Female Power Jack
External Controls
The following controls will be mounted externally on the enclosure and connected to the PCB via wires:
Main Power ON/OFF Switch
USB Charging ON/OFF Switch
The PCB should provide suitable connectors/terminals for these switch connections.
Required Outputs
Output 1 – 5V Power Rail
Fixed 5V DC Output
Minimum Current Capacity: 3A
Output available through a PCB-mounted connector
Output 2 – 3.3V Power Rail
Fixed 3.3V DC Output
Minimum Current Capacity: 1A
Output available through a PCB-mounted connector
Output 3 – USB Charging Port
USB Type-A Female Connector mounted on PCB
5V DC Output
Minimum Current Capacity: 3A
Suitable for mobile phone charging
Output 4 – Adjustable Power Rail
Adjustable Output Voltage: 7.5V to 9.5V
Voltage adjustment using a potentiometer
Minimum Current Capacity: 3A
Output available through a PCB-mounted connector
Design Requirements
Compact and professional PCB layout
High-efficiency power conversion
Low-noise outputs
Stable operation under continuous load
Proper thermal management
Appropriate trace widths for power paths
Clearly labelled connectors and test points
Easy manufacturing and assembly
Protection Requirements
The design should include appropriate protection and reliability features suitable for a medical device power subsystem, including protection against:
Reverse polarity
Overcurrent conditions
Electrical surges
Electrostatic discharge (ESD)
Electrical noise and interference
EMI/EMC Requirements
The PCB should be designed using industry-standard EMI/EMC best practices, including:
Reduction of conducted emissions
Reduction of radiated emissions
Proper grounding strategy
Optimized power routing
Noise mitigation techniques
Layout practices that support future EMC testing and compliance activities
Compliance Requirements
RoHS-compliant components only
Lead-free manufacturing compatible
Design suitable for future CE/EMC compliance requirements
Deliverables
Complete Schematic Design
PCB Layout
Gerber Files
Bill of Materials (BOM)
Pick & Place File
Manufacturing Files
Source Design Files (KiCad, Altium, or EasyEDA)
PDF Schematic
3D PCB View
Preferred Power Architecture
12V → 5V via high-efficiency buck converter
5V → 3.3V via low-noise regulator
12V → Adjustable 7.5V–9.5V via dedicated regulator stage
Project Description
I am looking for an experienced PCB designer to develop a reliable multi-output power supply PCB for use in a medical device.
The design should prioritize reliability, low noise, power integrity, protection, thermal performance, and EMI/EMC-conscious layout practices. The PCB should be suitable for future compliance-oriented product development and use only RoHS-compliant components
Input Power
Input Supply: 12V DC, 5A
PCB-mounted DC Female Power Jack
External Controls
The following controls will be mounted externally on the enclosure and connected to the PCB via wires:
Main Power ON/OFF Switch
USB Charging ON/OFF Switch
The PCB should provide suitable connectors/terminals for these switch connections.
Required Outputs
Output 1 – 5V Power Rail
Fixed 5V DC Output
Minimum Current Capacity: 3A
Output available through a PCB-mounted connector
Output 2 – 3.3V Power Rail
Fixed 3.3V DC Output
Minimum Current Capacity: 1A
Output available through a PCB-mounted connector
Output 3 – USB Charging Port
USB Type-A Female Connector mounted on PCB
5V DC Output
Minimum Current Capacity: 3A
Suitable for mobile phone charging
Output 4 – Adjustable Power Rail
Adjustable Output Voltage: 7.5V to 9.5V
Voltage adjustment using a potentiometer
Minimum Current Capacity: 3A
Output available through a PCB-mounted connector
Design Requirements
Compact and professional PCB layout
High-efficiency power conversion
Low-noise outputs
Stable operation under continuous load
Proper thermal management
Appropriate trace widths for power paths
Clearly labelled connectors and test points
Easy manufacturing and assembly
Protection Requirements
The design should include appropriate protection and reliability features suitable for a medical device power subsystem, including protection against:
Reverse polarity
Overcurrent conditions
Electrical surges
Electrostatic discharge (ESD)
Electrical noise and interference
EMI/EMC Requirements
The PCB should be designed using industry-standard EMI/EMC best practices, including:
Reduction of conducted emissions
Reduction of radiated emissions
Proper grounding strategy
Optimized power routing
Noise mitigation techniques
Layout practices that support future EMC testing and compliance activities
Compliance Requirements
RoHS-compliant components only
Lead-free manufacturing compatible
Design suitable for future CE/EMC compliance requirements
Deliverables
Complete Schematic Design
PCB Layout
Gerber Files
Bill of Materials (BOM)
Pick & Place File
Manufacturing Files
Source Design Files (KiCad, Altium, or EasyEDA)
PDF Schematic
3D PCB View
Preferred Power Architecture
12V → 5V via high-efficiency buck converter
5V → 3.3V via low-noise regulator
12V → Adjustable 7.5V–9.5V via dedicated regulator stage