Find HS Code and trade information for dc power module

DC Power Module

A DC power module (DCM) is a power supply that converts a DC voltage from one level to another. They are often contained within a package suitable for mounting on a printed circuit board (PCB). They provide a regulated DC voltage, offering stability and protection features not found in simple voltage dividers or linear regulators.

Material Composition

DCMs utilize a variety of components, including:

• Switching Components: MOSFETs, IGBTs, or diodes are commonly used for efficient voltage conversion.
• Control ICs: Integrated circuits manage the switching process, providing regulation and protection.
• Inductors: Store energy during switching and smooth output voltage ripple. Ferrite cores are typical.
• Capacitors: Filter input and output voltages, reducing ripple and noise. Electrolytic, ceramic, and film capacitors are employed.
• Transformers (in isolated modules): Provide galvanic isolation between input and output.
• Resistors: Used for voltage division, current limiting, and feedback networks.
• PCB: Provides mechanical support and electrical connections for all components. FR-4 is a common material.
• Enclosure/Packaging: Often plastic or metal, providing protection and heat dissipation.
• Connectors: Facilitate input and output connections.

Purpose and Function

The primary purpose of a DCM is to provide a stable and regulated DC voltage source for electronic circuits. Key functions include:

• Voltage Conversion: Step-down (buck), step-up (boost), inverting (buck-boost), or isolated conversion.
• Voltage Regulation: Maintaining a constant output voltage despite variations in input voltage or load current.
• Overcurrent Protection: Limiting output current to prevent damage to the module or connected load.
• Overvoltage Protection: Shutting down the module if the output voltage exceeds a safe level.
• Short-Circuit Protection: Protecting against damage from short circuits on the output.
• Thermal Protection: Shutting down the module if the temperature exceeds a safe limit.
• Isolation (in isolated modules): Preventing ground loops and providing safety by separating the input and output circuits.

Usage Scenarios

DCMs are used in a wide range of applications:

• Industrial Control Systems: Powering sensors, actuators, and controllers.
• Telecommunications Equipment: Providing power for network devices.
• Medical Devices: Powering diagnostic and therapeutic equipment (often requiring high isolation and safety standards).
• Instrumentation: Powering data acquisition systems and measurement devices.
• Automotive Applications: Powering automotive electronics.
• Embedded Systems: Powering microcontrollers and other embedded components.
• LED Lighting: Providing constant current or constant voltage for LED drivers.
• Portable Devices: Providing regulated power in battery-operated devices.

Common Types

DCMs are categorized by their topology and features:

• Buck Converters (Step-Down): Reduce the input voltage to a lower output voltage. Efficient and widely used.
• Boost Converters (Step-Up): Increase the input voltage to a higher output voltage.
• Buck-Boost Converters: Can produce an output voltage that is either higher or lower than the input voltage. Inverting and non-inverting variations exist.
• Isolated DC-DC Converters: Provide galvanic isolation between input and output. Common topologies include:
  • Flyback Converters: Simple and cost-effective, suitable for low-power applications.
  • Forward Converters: More efficient than flyback converters, suitable for medium-power applications.
  • Half-Bridge Converters: Higher power capability than forward converters.
  • Full-Bridge Converters: Highest power capability, but more complex.
• Linear Regulators (LDOs): Simple and low-noise, but less efficient than switching regulators.
• PoE (Power over Ethernet) Modules: Designed to supply power over Ethernet cables.
• High Voltage DC-DC Converters: Generate high voltage DC output, often used in applications like laser drivers.
• Programmable DC Power Supplies: Allow for adjustable output voltage and current.

DC power modules fall under the category of electrical transformers, static converters, and inductors, or electrical machines and apparatus with individual functions not specified elsewhere. The following HS codes are relevant based on the provided information:

• 8504406001: Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: Power supplies for automatic data processing machines or units thereof of heading 8471; power supplies for goods of subheading 8443.31 or 8443.32; power supplies for monitors of subheading 8528.42 or 8528.52 or projectors of subheading 8528.62: Suitable for physical incorporation into automatic data processing machines or units thereof of heading 8471 With a power output not exceeding 50 W. This code specifically covers power supplies designed for data processing equipment and has a power output limit of 50W.

  • 85: Electrical machines and equipment.
  • 04: Electrical transformers, static converters and inductors.
  • 40: Static converters.
  • 60: Power supplies for automatic data processing machines.
  • 01: Further specification for power supplies within the 8504.40 heading.

• 8504409510: Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: Other Rectifiers and rectifying apparatus: Power supplies: With a power output not exceeding 50 W. This code covers other rectifiers and rectifying apparatus used as power supplies, also with a power output limit of 50W.

  • 85: Electrical machines and equipment.
  • 04: Electrical transformers, static converters and inductors.
  • 40: Static converters.
  • 95: Other rectifiers and rectifying apparatus.
  • 10: Further specification for power supplies within the 8504.40 heading.

• 8543708000: Electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter; parts thereof: Other machines and apparatus: Other: Microwave amplifiers. While this code specifically mentions microwave amplifiers, it falls under the broader category of electrical machines with individual functions.

  • 85: Electrical machines and equipment.
  • 43: Electrical machines and apparatus, having individual functions.
  • 70: Other machines and apparatus.
  • 80: Other.

• 8543709860: Electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter; parts thereof: Other machines and apparatus: Other: Other: Other. This is a very broad code covering other electrical machines and apparatus not specifically classified elsewhere.

  • 85: Electrical machines and equipment.
  • 43: Electrical machines and apparatus, having individual functions.
  • 70: Other machines and apparatus.
  • 98: Other.
  • 60: Further specification for other machines and apparatus within the 8543.70 heading.

Regarding HS codes 8504406001 and 8504409510, please note that these codes are applicable only if the power output does not exceed 50W.