DC/DCコンバータ絶縁

RECOMは1975年の創業以来、世界で最も経験豊富なDC/DCコンバータメーカの一つです。RECOMのDC/DCモジュール・ポートフォリオは当然ながら市場で最も充実しており、サイズ、ピンオプション、動作温度範囲、1/4ワットから3キロワットまでの入出力電圧組み合わせなど、幅広いラインナップを揃えています。

当社は、効率97%以上 の非絶縁型DC/DC 当社は、効率97%以上の非絶縁型DC/DCコンバータから20kVDC絶縁型DC/DCコンバータ、小型表面実装モジュールからハーフブリック型、動作温度は-40℃から+100℃までのコンバータを提供しています。全ての製品は国際安全認証を取得しており、詳細なデータシートはこのウェブサイトから入手できます。当社の最も人気のあるコンバータである "E "バージョンは、大量生産でコスト重視のアプリケーションに適した低価格の製品です。

当社は、市場で最も信頼性が高く、エネルギー効率に優れた高品質のDC/DCコンバータを提供しており、当社の幅広いポートフォリオの中にお客様のアプリケーションニーズに最適な製品があると確信しています。もし最適な製品がない場合でも、最も革新的なメーカーの一つとして当社は毎月平均して新しいDC/DCモジュールをリリースしていますので、お客様のニーズに合った製品を見つけることができるでしょう。

What function does a DC/DC Converter have?

DC/DC converters are electronic components in a design that provide a specific voltage and isolation between input and output.

They can be used for many different reasons and provide, in a simple way, all different voltages used by electronic components in one single board. The isolation within the DC/DC converter allows the design engineer to comply with the safety regulations and solve issues such as interferences and failure protection. DC/DC converters also offer a flexible and clean solution to Distributed Power Architecture systems.

The function of a DC/DC converter module is to meet at least one of the following requirements:
  • to match the secondary load to the primary power supply
  • to provide isolation between primary and secondary circuits
  • to provide protection against the effects of faults, short circuit or overheating
  • to simplify compliance with safety, performance or EMC legislation.

Matching loads

One of the most common applications for a DC/DC converter is to step down the voltage from a higher voltage source (for example a 24V industrial power supply) to a lower voltage needed at the load (like a 3.3V microprocessor).

DC/DC converters can also be used for the opposite reason, to step up the voltage from a low voltage (such as a 5V board level system bus) to a higher voltage needed in external systems (for example a 12V peripheral such as a motor).

Voltages generated from a battery decrease over time. If a system needs a stable voltage and it is powered by a battery, a DC/DC converter is needed to stabilize the voltage source. Regulated DC/DC converters can accept a wide input voltage range and convert it into a regulated and stable voltage. A good example of this would be a 12V battery that usually has a voltage range from 14V down to 9V. By adding a +12V DC/DC converter, the design assures that the load will always see a fixed 12V.

Isolation

The second reason to use a DC/DC converter is to isolate a primary circuit from a secondary circuit. This is important to prevent a sensitive component from interferences coming from other components. As an example, this figure shows a noisy circuit A (a high current motor driver) and circuit B (a motor speed controller) that are electrically separated by a DC/DC converter.

One of the main applications for isolated circuits is found in the medical industry. They need to comply with very strict safety standards and regulations, such as UL or CSA. The additional isolation provided by a DC/DC converter is specifically required for electronic systems that are directly attached to patients.

Other applications connected to the “outside world”, such as USB interfaces, would also require isolation to prevent an excess of voltage leaving a device due to an internal failure.

Simplification

DC/DC converters are also used in distributed power architecture systems for many reasons including: efficiency and reliability compared to central multiple outputs supply, as well as flexibility and cost. Larger, centralized power supplies can have significant voltage drops, and are expensive and inflexible.

For more information on DC/DC conversion theory - read up in our Book Of Knowledge.

Technical progress in DC/DC Converters

It's not all too long ago that a transformer, rectifier and linear regulator was the main technology in power conversion - nowadays the DC/DC converter gradually edges out the linear regulator and the primary-side switching controller is replacing the simple 50Hz mains transformer.

The immense technical progress of new circuits, components, and materials has made it possible to increase the performance and to improve the thermal behavior, while simultaneously substantially reducing the size, weight and cost of power supplies. Consequently, switching regulators are used today in large numbers and are the standard technology in DC/DC power conversion.

Modern DC/DC converters are designed to provide efficient power conversion to deliver a controlled, safe and well-regulated DC power supply for a variety of electronic instruments, devices and systems.

Modular vs. discrete

Modular DC/DC converters were always considered to be more expensive than discrete solutions. However, with the commissioning of its own SMT factory, we are able to offer selected converter series at very attractive prices. With economy of scale, we realize with our cost effective power supplies cost savings of up to 50% compared to similar products without compromising quality.

It is not only the design engineer that wins by using our products, but also the buyer as procurement begins and ends with just one single module. No more specifying and sourcing of multiple components.

Unexpected problems such as component tolerances, testing failures and EMC issues coming from discrete designs can lead to horrendous delays and re-design costs. The planned launch of a product can quickly be delayed by months.

Tested and certified DC/DC converters not only save on development time but also reduce the risk of time-to-market delays and simplify the final certification process.



With simply adding a few components to the DC/DC converter, its EMC compliance can reach EN55022, Class A or Class B.



Standard case sizes, footprints and pinouts guarantee an easy integration into your design.

Portfolio

Whether regulated or unregulated, isolated to 10kVDC, or carefully designed for extremely high ambient temperatures of +100°C - we offer a suitable modular DC/DC converter for every application.

Unregulated DC/DC converters are typically used in general purpose power isolation and voltage matching applications and feature a full industrial operating temperature range of -40°C up to +85°C without derating.

Regulated DC/DC converters are designed for industrial applications, can drive high capacitive loads and operate over a broad temperature range without derating. Furthermore they provide stable output voltages when the input voltage suddenly changes.
  Series Power (W) Vin (V) Main Vout (V) Mounting Type Package Style
1 DC/DC, 0.5 W, Single Output, SMD RxxC05TExxS Series
Focus
0.5 5.0 5 SMD SMD 16 Pin
2 DC/DC, 0.5 W, Single Output, SMD RxxCTxxS Series
Focus
0.5 5.0 5 SMD SMD 16 Pin
3 DC/DC, 1.0 W, Dual Output, SMD R1DX Series
Focus
1.0 5.0 ± 12, ± 15, ± 5, ± 9 SMD Open Frame
4 DC/DC, 1.0 W, SMD R1M Series
Focus
1.0 4.5 - 18.0, 9.0 - 36.0, 18.0 - 75.0 12, 15, 24, 3.3, 5, 9, ± 12, ± 15, ± 5 SMD SMD 8 Pin
5 DC/DC, 1.0 W, Single Output, SMD R1S Series
Focus
1.0 3.3, 5.0, 12.0, 15.0, 24.0 12, 15, 24, 3.3, 5, 9 SMD SMD 5 Pin, SMD 8 Pin, SMD 12 Pin
6 DC/DC, 1.0 W, Single Output, SMD R1SE Series
Focus
1.0 5.0 5 SMD SMD 5 Pin, SMD 8 Pin
7 DC/DC, 1.0 W, Single Output, SMD R1SE/H2 Series
Focus
1.0 3.3, 5.0, 12.0, 15.0 12, 15, 5 SMD SMD 5 Pin
8 DC/DC, 1.0 W, Single Output, SMD R1SX Series
Focus
1.0 3.3, 5.0, 12.0 3.3, 5 SMD Open Frame
9 DC/DC, 1.0 W, THT RB Series
Focus
1.0 3.3, 5.0, 12.0, 15.0, 24.0 12, 15, 24, 3.3, 5, 9, ± 12, ± 15, ± 24, ± 3.3, ± 5, ± 9 THT SIP7
10 DC/DC, 1.0 W, Single Output, THT RBE Series
Focus
1.0 5.0 5 THT SIP7
11 DC/DC, 1.0 W, Single Output, THT REE Series
Focus
1.0 5.0 5 THT SIP7
12 DC/DC, 1.0 W, Single Output, THT REM1 Series
Focus
1.0 3.3, 5.0, 12.0, 15.0, 24.0 12, 3.3, 5 THT SIP7
13 DC/DC, 1.0 W, Single Output, THT RFB Series
Focus
1.0 5.0 5 THT SIP7
14 DC/DC, 1.0 W, Single Output, THT RFM Series
Focus
1.0 5.0 5 THT SIP4
15 DC/DC, 1.0 W, Single Output, THT RFMM Series
Focus
1.0 5.0 5 THT SIP7
16 DC/DC, 1.0 W, Single Output, THT RK Series
Focus
1.0 5.0, 12.0, 15.0, 24.0 12, 15, 5, 9 THT SIP7
17 DC/DC, 1.0 W, Single Output, THT RKE Series
Focus
1.0 5.0, 12.0, 24.0 5 THT SIP7
18 DC/DC, 1.0 W, Single Output, THT RKK Series
Focus
1.0 5.0 5 THT SIP7
19 DC/DC, 1.0 W, Single Output, THT ROE Series
Focus
1.0 3.3, 5.0, 12.0, 15.0, 24.0 12, 15, 5 THT SIP4
20 DC/DC, 1.0 W, THT RP Series
Focus
1.0 5.0, 9.0, 12.0, 15.0, 24.0 12, 15, 24, 3.3, 5, 9, ± 12, ± 15, ± 24, ± 3.3, ± 5, ± 9 THT SIP7
21 DC/DC, 1.0 W, Single Output, THT RSOE Series
Focus
1.0 4.5 - 9.0, 18.0 - 36.0 5 THT SIP8
22 DC/DC, 1.0 W, Single Output, THT RSOE-Z Series
Focus
1.0 4.5 - 18.0, 9.0 - 36.0 5 THT SIP8
23 DC/DC, 1.0 W, Single Output, THT RSOK-Z Series
Focus
1.0 9.0 - 36.0 5 THT SIP8
24 DC/DC, 1.0 W, Single Output, THT RYK Series
Focus
1.0 5.0 3.3, 5 THT SIP7
25 DC/DC, 1.0 W, Single Output, SMD (pinless) RxxC1TFxxS Series
Focus New
1.0 5.0 5 SMD (pinless) 12 pad LGA

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