DC-DC Converters

DC-DC converters convert a source of direct current (DC) from one voltage to another and contain an electrical barrier between the input and output to improve safety. They are also commonly referred to as DC-to-DC power supplies, DC-to-DC transformers or DC power converters. They are suitable for a range of applications, including telecommunication equipment, industrial equipment, and consumer electronics.

What are DC-to-DC Converters Used For?

DC-to-DC converters are essential devices that adjust the voltage level of DC power from one level to another, enabling a wide range of applications across various industries. Industrial DC-DC converters, specifically, are used to manage power requirements in demanding environments like manufacturing plants and automation systems, where robust and reliable power conversion is critical.

Generally, there are two types of DC-to-DC converters: isolated and non-isolated. The key difference lies in their electrical isolation; isolated DC-DC converters separate the input and output through a physical barrier, which enhances safety and noise reduction, while non-isolated converters share a common ground between input and output, typically used where such separation is not required.

Isolated DC-DC converters, also known as isolated DC power supplies, are crucial in applications involving sensitive electronics where electrical isolation is necessary to protect the circuits. By preventing ground loops and reducing noise, isolated DC-DC converters ensure the stable operation of medical equipment, complex data communications devices, and precision instruments.

Unlike their isolated counterparts, non-isolated DC-DC converters do not provide electrical isolation between input and output. They are typically more compact and cost-effective, suitable for applications where input and output share a common ground. These converters are often used in consumer electronics and simpler industrial applications where isolation is not a concern.

Types of DC Power Converters

There are various types of DC-to-DC power supplies designed to meet different technical requirements and applications.

Types of Isolated DC-DC Converters

• Single-Output Isolated Converters
• Multi-Output Isolated Converters
• High-Voltage Isolated Converters
• Low Power Isolated Converters
• Adjustable Output DC-DC Isolated Converters
• Medical-Grade Isolated Converters
• Railway-Grade Isolated Converters

Types of Non-Isolated DC-DC Converters

• Buck Converters (Step-Down)
• Boost Converters (Step-Up)
• Buck-Boost Converters
• SEPIC Converters
• Cuk Converters
• LDO (Low Dropout Regulator) Converters
• Switching Regulators

Voltage-Specific DC-to-DC Transformers

At RS, we offer an extensive range of DC-DC converters suitable for various output voltage requirements, including specialised models like 24V to 9V DC-DC converters and 5V DC-DC converters. Our selection ensures you find the perfect match for your specific power conversion needs.

Package or Module Types

Isolated DC-DC converters come in many shapes and packages to suit every eventuality. Some of the most popular are:

• DIP16
• DIP24
• PDIP
• SIP
• Encapsulated
• Full and half brick

Mounting Types

DC-DC converters are used in many different environments and applications, so they need to be easy to mount or install. Our products come in a range of mounting options, including:

• Chassis mount
• DIN-Rail mount
• Flange mount
• PCB mount
• Rackmount
• Surface mount
• Through-hole

The Advantages of DC-to-DC Converters

DC-DC converters offer critical benefits in power management across various applications, enhancing both efficiency and reliability in electrical systems.

The Advantages of Isolated DC-DC Converters

• Meet international safety standards and regulations.
• Electrical isolation provides additional safety to personnel in case of internal failure.
• Wide range of voltage conversion with high efficiency.
• Certain models are railway- and medical-approved.

The Advantages of Non-Isolated DC-DC Converters

• Lower cost compared to isolated converters.
• Compact design allows for easy integration into space-constrained applications.
• Faster response time due to the absence of an isolation barrier.
• High efficiency in applications where input and output are common-grounded.

Applications of DC-to-DC Converters

DC-DC converters are versatile components used across a variety of industries and can be integral to systems like SMPS or PLC modules. Here are some of the most common uses of industrial DC-DC converters:

• Renewable Energy Integration: DC-DC converters in renewable systems ensure smooth, low-ripple current and adapt to various power sources. Additionally, non-isolated interleaved converters with high voltage gains are preferred for linking to renewables and microgrids.
• Medical Device Safety: Isolated DC-DC converters are crucial in medical settings to prevent exposure to dangerous input voltages. Non-isolated DC-DC converters suffice for less critical needs, like x-ray system power supplies.
• Vehicle Power Management: In electric and hybrid vehicles, the primary DC-DC converter transforms high-voltage battery power into lower voltages for lights, wipers, and windows.
• Smart Lighting Efficiency: Smart lighting demands efficient, simple-to-design DC-DC converters with precise current control and voltage protection.

Leading Supplier of DC-to-DC Power Converters

RS is a trusted supplier and distributor of DC-to-DC converters, featuring renowned brands like TRACOPOWER, XP Power, our own RS PRO line, and more. From adjustable DC-DC converters to 24V to 9V DC-DC converters, we offer competitive prices and reliable products from top DC-DC converter manufacturers.

For more details on our ordering process, delivery services and delivery fees, please refer to our Delivery Page.