Overview of DC-DC Medical Power Modules

What is a DC-DC Medical Power Supply?

A DC-DC medical power supply is a module that converts one DC voltage to another, specifically designed for medical devices. These modules are known for high reliability, strong isolation, and excellent safety, making them ideal for portable medical instruments and internal multi-voltage systems by providing stable and regulated DC power.

Key Features and Advantages

• Flexible Voltage Options: Supports common output voltages like 3.3V, 5V, 12V, ±12V, and ±15V to meet diverse circuit needs.
• Wide Input Range: Typically compatible with input voltages from 5V to 36V, suitable for use with batteries, adapters, or main power supplies.
• High Isolation Design: Offers isolation voltages up to 5000V to protect patients and operators.
• Medical Certification: Compliant with standards such as IEC 60601-1 and UL to meet medical electrical safety requirements.
• Ultra-low Leakage Current: As low as 2μA, making them ideal for CF-class patient-contact devices.
• Compact Form Factor: Available in various form factors like SIP, DIP, or modular for easy integration into compact devices.
• Excellent EMI Immunity: Meets EN55011 Class B, ensuring reliable operation even in sensitive environments.

Common Medical Application Scenarios

• Monitors & Blood Pressure Devices: Powers isolated signal processing boards and sensors.
• Syringe Pumps & Infusion Pumps: Supplies power to motor drivers and control boards.
• Portable Diagnostic Equipment: Provides multi-output voltages in energy-efficient formats.
• Ultrasound and EEG Devices: Delivers clean and stable power for precision analog circuits.
• Ventilators and Anesthesia Devices: Enables isolated power for logic and load control systems.
• Wearable Medical Devices: Suitable for compact, lightweight form factors.

Selection Tips

1. Prioritize Certified Products: Choose modules certified to IEC 60601-1 and other relevant medical safety standards.
2. Leave Current Margin: Ensure the rated output current includes at least 20% headroom for reliability.
3. Ensure Proper Isolation: For patient-contact equipment, make sure the module provides proper creepage, clearance, and insulation voltage.
4. Consider EMI and Compatibility: Opt for modules with EMI filtering to avoid interference with sensitive signal systems.
5. Match the Physical Form: Select a module format (e.g., SMD, through-hole, encapsulated) that fits your equipment’s space.
6. Safety Protections: Favor models with built-in protection against short circuits, over-voltage, and over-temperature conditions.