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How to choose switching power supply 24V output (peak load) & recommended models are released!

紙に書かれた数字の24が板の上に乗っている

Which model should be selected from among the many 24V output switching power supplies?
In this article, for those who are considering switching power supplies for new device design, VAVE study, scrap power supply, etc., we will introduce in detail from how to choose without failure to recommended models by wattage.

New products of 24V output switching power supplies are released every year by many manufacturers, and it has become possible to select highly reliable power supplies with distinctive specifications.

However, it is a fact that many people are wondering which switching power supply to choose because there are too many models. Therefore, in this article, we will explain the points to pay attention to when purchasing a switching power supply with 24V output and the characteristics of the power supply by recommended manufacturer. Choose the manufacturer’s power supply that suits your needs.

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24V output switching power supply is roughly divided into two types

Before checking how to choose a switching power supply with 24V output and recommended models for each wattage, let’s first understand the basic types of power supplies.

There are two main types depending on the input voltage. The input voltage of the AC / DC power supply is AC (alternating current), and the input voltage of the DC / DC converter is DC (direct current).

The AC / DC power supply is the power supply that converts the commercial AC power supply (AC) sent to each factory or home to a stable DC voltage (DC). On the other hand, a DC / DC converter is a power supply that converts a direct current power supply (DC) such as a battery into another stable direct current voltage (DC).

From here, we will explain each feature

What are the features of AC / DC power supply

The most sought after “AC / DC power supply” among switching power supplies is a 24V output power supply. Therefore, the number of models is abundant, and it is easy for users to find a power supply with the specifications they desire.

The input voltage is generally single-phase 100 / 200V and three-phase 200V.
The current value ranges from 0.2A (5W) to 100A (2400W) for single-phase 100 / 200V input and 40A (960W) to 75A (1800W) for three-phase 200V input.

There are various types such as single-phase 100 / 200V input type, board type, DIN rail type, onboard type, and power module. Three-phase 200V input is only partly DIN rail type and unit type.

What are the features of DC / DC converters

 A power supply whose input voltage and output voltage of the DC / DC converter are direct current voltage (DC).
The 24V output DC / DC converter in Thailand mounted on the board has a power module. The small onboard power supply and POL (Point of Load) have only 15V output.

Input voltages are generally DC48V, DC110V, and DC280V. DC48V is often used for communication systems, DC110V for power systems, and DC280V for FA robots. The capacity is about 50W to 500W.

 

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Four points to check when selecting a switching power supply

After confirming the basic types of switching power supplies, we will show you how to choose a power supply that you will not regret. In order to identify the model that suits your needs, let’s master the selection method properly so that you can judge whether the power supply is good or bad. What I want to pay attention to when choosing such a power supply

  1. Ambient temperature and load factor
  2. Supports peak current
  3. Electrolytic capacitor life
  4. Other features

The above four points. From here, I will explain each point in more detail, so please refer to it when selecting.

Check the load factor (current) from the ambient temperature.

When choosing a power source, the current value is a very important point. It is wise to choose a power supply that matches the ambient temperature of the power supply in the device / equipment when choosing the optimum power supply, rather than “choose a 10A power supply because the required current is 10A”. The value varies greatly depending on the ambient temperature of the power supply.

Be sure to check the “Load factor for ambient temperature” table in the specifications.
In the table below, when the ambient temperature of the power supply is 50 ° C and it is used with standard mounting A, it can only be used at 70%. In other words, if the rated current is 10A, it will be 7A.

 

 

 

Furthermore, it is generally best to use it at a load factor of 70% to 80% of the rated current of the power supply. If it is 70% of 7A, it is better to use it at 4.9A. In other words, a 10A power supply will be used at 4.9A.

For motor load, select a power supply that supports peak current

The 24V output has a large motor load, requires torque at startup, and causes peak current to flow. If you select a power supply based on that peak current, you will end up with a large capacity (W) power supply.

A “peak current compatible” power supply can flow a peak current of 1.2 to 2 times the rated current for about 1 second at startup. This type of power supply has the great advantage of being able to use a small power supply and reducing costs.

If you are particular about reliability, read the calculated value of electrolytic capacitor life.

In addition to the load factor, if you select a switching power supply, you should carefully read the “calculated value of electrolytic capacitor life”. The larger the value, the longer the life and the more reliable switching power supply can be selected.

It is expressed in hours (H) or years depending on the manufacturer.
The life of the electrolytic capacitor is also determined by the ambient temperature and load factor. Generally, the ambient temperature is 40 ° C and the load factor is 80%, so the selection is made based on that condition.
Of course, check the life of the electric controller under the actual usage conditions for the ambient temperature and load factor.

In the past, the life of electrolytic capacitors was generally 4 or 5 years, but recent power supplies have become more efficient, and it is not uncommon for electric capacitors to have a life of 10 years or more. Some models have a life of 20 years or more, but the electrolytic capacitor has a sealing rubber and has an actual life of 15 years. Therefore, the maximum life of the electric controller should be about 15 years.

Also look at features

When choosing a new power supply, let’s look not only at the basic functions but also at other functionality. For example

  • Power factor improvement circuit
  • Harmonic current suppression
  • Noise terminal voltage class B

There are various functions that are provided depending on the model. It may not be necessary, but make sure that it is equipped with a “power factor improvement circuit”, is “compliant with harmonic current regulation”, and is compliant with “noise terminal voltage class B”.

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Introducing recommended switching power supplies with 24V output for each wattage!

After confirming how to select the power supply, we will introduce the models that we actually want to recommend. This time, we picked up from domestic standard power supply manufacturers.

AC / DC power supply

50W

COSEL LDA50F-24-H

List price: 5,270 yen (with case cover: 5,610 yen)

If you are looking for an optimal power supply with a 24V output of about 2A, we recommend the Cosel LDA50F-24-H, which supports board-type peak current. It is a long-selling product released in 1994.

Product overview

  • Rated input: AC85 to 264V 1Φ
  • Output: 24V 2.1A (Peak: 3A)
  • Rated output power: 50W
  • Body size (mm): Width 55 x Height 26 x Depth 195
  • Type: Board type
  • Free warranty period 2 years

100W

COSEL LFP100F-24-Y

List price: 6,000 yen (with case cover: 6,420 yen)

Cosel’s LFP series has a full range of options such as miniaturization (42% reduction in floor area), double peak output, chassis cover, and dedicated harness.

If you are looking for a switching power supply with 24V output and excellent functionality, this is a hot selling product that we definitely recommend.

Product overview

  • Rated input: AC85 to 264V 1Φ
  • Output: 24V 4.3A (Peak: 8.6A)
  • Rated output power: 100W
  • Body size (mm): Width 62 x Height 33 x Depth 155
  • Type: Board type
  • Power factor improvement circuit installed
  • Harmonic current regulation compliant
  • Free warranty period 5 years (conditional)
  • Electric controller life 6 years (at ambient temperature 40 ° C, load factor 80%)

120W

COSEL KHEA/KHNA120F-24

 

List price: 12,000 yen

There are two types of input / output terminal blocks: block terminals (KHNA) and European terminals (KHEA). With remote control, with terminal for checking output voltage (relay output), compatible with SEMI F-47 standard, surprising electric controller life 16 years

Product overview

  • Rated input: AC85 to 264V 1Φ
  • Output: 24V 5A (Peak: 7.5A)
  • Rated output power: 120W
  • Body size (mm): Width 37 x Height 124 x Depth 117
  • Type: DIN rail type
  • Power factor improvement circuit installed
  • Harmonic current regulation compliant
  • Free warranty period 5 years (conditional)
  • Electric controller life 16 years (at ambient temperature 40 ° C, load factor 80%)

 

150W

Nipron UZP150-24-J0E

Price: 7,040 yen

Economy type 24V output continuous 150W, peak 400W AC-DC switching power supply. With low noise and low leakage current, there is no need to install an external noise filter.

Achieves amazingly high efficiency of 92% (* AC230V input, 150W load). Another feature is that it can output a peak power of 400W, which is 2.6 times the continuous rating or more.

Product overview

  • Rated input: AC85 to 264V 1Φ
  • Output: 24V 6.3A (Peak: 16.7A)
  • Rated output power: 151.2W
  • Body size (mm): Width 75 x Height 35 x Depth 160
  • Type: Board type
  • Power factor improvement circuit installed
  • Harmonic current regulation compliant
  • Free warranty period 3 years
  • Electric controller life 30 years (at ambient temperature 40 ° C, load factor 80%)

 

TDK-Lambda ZWS150BP-24

Price: 8,600 yen (with case cover: 9,040 yen)

Not only supports double peak load, but also significantly smaller and lighter than conventional products by 30% or more Volume ratio: 33% reduction, weight ratio: 31% reduction. If you are looking for a small power supply with peak load, we recommend the “ZWS-BP” series.

It guarantees an operating ambient temperature of -10 ° C to + 70 ° C (when installed as standard) and can be installed in a wide range of devices.

Product overview

  • Rated input: AC85 to 265V 1Φ
  • Output: 24V 6.3A (Peak: 12.6A)
  • Rated output power: 151.2W
  • Body size (mm): Width 75 x Height 37 x Depth 160
  • Type: Board type
  • Power factor improvement circuit installed
  • Harmonic current regulation compliant
  • Free warranty period 5 years (conditional)
  • Electric controller life 10 years (at ambient temperature 40 ° C, load factor 80%)

200W

Nipron UZP220-24-JBE

Price: 8,420 yen

Nipron’s UZP series has achieved a large capacity output and a long life by achieving high efficiency of 93.5% (at the time of AC200V input).

Although the list price is as low as 8,420 yen, it is a recommended one with high peak support, low noise and low leakage current, and remote ON / OFF function as standard equipment.

Product overview

Rated input: AC85 to 264V 1Φ
Output: 24V 9.2A (Peak: 16.7A)
Rated output power: 220.8W
Body size (mm): Width 75 x Height 35 x Depth 160
Type: Board type
Power factor improvement circuit installed
Harmonic current regulation compliant
Free warranty period 3 years
Electric controller life 14 years (at ambient temperature 40 ° C, load factor 80%)

240W

TDK-Lambda ZWS240BP-24

Price: 11,500 yen (with chassis cover: 11,990 yen)

Not only is it compatible with double peak loads, but it is also significantly smaller and lighter than conventional products by 30% or more. Volume ratio: 33% reduction and weight ratio: 31% reduction. If you are looking for a small power supply with peak load, we recommend the “ZWS-BP” series.

It guarantees an operating ambient temperature of -10 ° C to + 70 ° C (when installed as standard) and can be installed in a wide range of devices.

Product overview

  • Rated input: AC85 to 265V 1Φ
  • Output: 24V 10A (Peak: 20A)
  • Rated output power: 240W
  • Body size (mm): Width 84 x Height 42 x Depth 180
  • Type: Board type
  • Power factor improvement circuit installed
  • Harmonic current regulation compliant
  • Free warranty period 5 years (conditional)
  • Electric controller life 10 years (at ambient temperature 40 ° C, load factor 80%)

 

COSEL LFP240F-24-Y

List price: 10,000 yen (with case cover: 10,490 yen)

Cosel’s LFP series has a full range of options such as miniaturization (28% reduction in floor area compared to conventional models), double peak output, chassis cover, and dedicated harness.

If you are looking for a switching power supply with 24V output and excellent functionality, we definitely recommend it.

Product overview

  •  Rated input: AC85 to 264V 1Φ
  • Output: 24V 10A (Peak: 20A)
  • Rated output power: 240W
  • Body size (mm): Width 84 x Height 46 x Depth 180
  • Type: Board type
  • Equipped with power factor improvement circuit
  • Harmonic current regulation compliant
  • Free warranty period 5 years (conditional)
  • Electric controller life 6 years (at ambient temperature 40 ° C, load factor 80%)
COSEL KHEA/KHNA240F-24

 

List price: 18,000 yen

There are two types of input / output terminal blocks: block terminals (KHNA) and European terminals (KHEA). With remote control, with terminal for checking output voltage, compatible with SEMI F-47 standard

Product overview

  • Rated input: AC85 to 264V 1Φ
  • Output: 24V 10A (Peak: 15A)
  • Rated output power: 240W
  • Body size (mm): Width 50 x Height 124 x Depth 117
  • Type: DIN rail type
  • Equipped with power factor improvement circuit
  • Harmonic current regulation compliant
  • Free warranty period 5 years (conditional)
  • Electric controller life 9 years (at ambient temperature 40 ° C, load factor 80%)

300W

COSEL LFP300F-24-TY

Price: 14,500 yen (with chassis cover: 15,140 yen)

Cosel’s “LFP” series with a capacity of 300W, fanless, and double the peak output (at 600W at AC200V). It can be used up to the rated output power of 360W (1.2 times) by blowing air from the outside with a fan (forced ventilation).

A full range of options such as chassis cover, holding time extension unit, and special harness are also attractive.

Product overview

  • Rated input: AC85 to 265V 1Φ
  • Output: 24V 12.5A (Peak: 25A)
  • Rated output power: 300W
  • Body size (mm): Width 95 x Height 52.5 x Depth 222
  • Type: Board type
  • Equipped with power factor improvement circuit
  • Harmonic current regulation compliant
  • Free warranty period 5 years (conditional)
  • Electric controller life 3 years (at ambient temperature 40 ° C, load factor 80%)
TDK-Lambda HWS300P-24

Price: 30,200 yen (with chassis cover: 15,140 yen)

TDK-Lambda’s “HWS-P” series has a capacity of 300W and tripled peak output (at 900W at AC200V). An industrial power supply with a life of 10 years and sufficient functionality and reliability.

Product overview

Rated input: AC85 to 265V 1Φ
Output: 24V 12.5A (Peak: 25A)
Rated output power: 300W
Body size (mm): Width 61 x Height 82 x Depth 165
Type: Unit type
Equipped with power factor improvement circuit
Harmonic current regulation compliant
Free warranty period 5 years
Electric controller life 10 years (at ambient temperature 40 ° C, load factor 80%)

480W

COSEL KHEA/KHNA480F-24

List price: 28,000 yen

There are two types of input / output terminal blocks: block terminals (KHNA) and European terminals (KHEA). With remote control, with terminal for checking output voltage, compatible with SEMI F-47 standard

Product overview

  • Rated input: AC85 to 264V 1Φ
  • Output: 48V 20A (Peak: 30A)
  • Rated output power: 480W
  • Body size (mm): Width 70 x Height 124 x Depth 117
  • Type: DIN rail type
  • Equipped with power factor improvement circuit
  • Harmonic current regulation compliant
  • Free warranty period 5 years (conditional)
  • Electric controller life 4 years (at ambient temperature 40 ° C, load factor 80%)

 

 

DC / DC converter

50W

DC48V input
COSEL CBS504824

List price: 8,500 yen

DC / DC converter ideal for DC24V and DC48V power supply systems that require high reliability
Half-brick size, a standard package for the global telecommunications equipment industry
Achieves high power density and high power output by using a metal substrate
Wide variable output voltage range allows arbitrary output voltage setting

Product overview

 

DC110V Input
COSEL DHS50A24

List price: 8,500 yen

DC / DC converter ideal for distributed power supply system configurations
Brick size, a standard package for the global telecommunications equipment industry
Overcurrent protection / overvoltage protection / overheat protection
Remote control possible
Aluminum electrolytic / tantalum electrolytic capacitor unused

Product overview

 

DC280V入力
TDKラムダ PH50A280-24

List price: 8,500 yen

● Wide input voltage range, 200-425VDC
● Miniaturization, industry standard quarter brick size
● Wide range of operation Base plate temperature: -40 to + 100 ° C
● EN62477-1 OVCⅢ certification acquired

Product overview

 

75W

DC280V input
TDK-Lambda PH75A280-24

 

List price: 9,000 yen

● Wide input voltage range, 200-425VDC
● Miniaturization, industry standard quarter brick size
● Wide range of operation Base plate temperature: -40 to + 100 ° C

Product overview

 

100W

DC48V input
COSEL CBS1004824

List price: 9,600 yen

DC / DC converter ideal for DC24V and DC48V power supply systems that require high reliability
Half-brick size (W x H x D: 57.9 x 12.7 x 61.0 mm), which is a standard package in the global telecommunications equipment industry
Achieves high power density and high power output by using a metal substrate
Wide variable output voltage range allows arbitrary output voltage setting
With overcurrent protection / overvoltage protection / overheat protection circuit
Remote control is possible (overvoltage protection and overheat protection can be reset by remote control when input voltage is applied)

Product overview

DC110V input
COSEL DHS100A24

List price: 9,500 yen

DC / DC converter ideal for distributed power supply system configurations
Brick size, a standard package for the global telecommunications equipment industry
Overcurrent protection / overvoltage protection / overheat protection
Remote control possible

Product overview

DC280V input
TDK-Lambda PH100A280-24

List price: 9,500 yen

Optimal for DC24V and DC48V power supply systems that require high reliability
DC / DC converter
Half-brick size (W x H x D: 57.9 x 12.7 x 61.0 mm), which is a standard package in the global telecommunications equipment industry
Achieves high power density and high power output by using a metal substrate
Wide variable output voltage range allows arbitrary output voltage setting
With overcurrent protection / overvoltage protection / overheat protection circuit
Remote control is possible (remote control with input voltage applied)
Overvoltage protection and overheat protection can be reset by troll)

Product overview

 

 

150W

DC280V input
TDK-Lambda PH150A280-24

List price: 10,000 yen

● Wide input voltage range ● Miniaturization, industry standard quarter brick size ● Wide range of operation Base plate temperature: -40 to + 100 ℃

Product overview

 

200W

DC48V input
COSEL CBS2004824

List price: 10,500 yen

DC / DC converter ideal for distributed power supply system configurations
Brick size, a standard package for the global telecommunications equipment industry
Overcurrent protection / overvoltage protection / overheat protection
Remote control possible

Product overview

 

DC110V input
COSEL DHS200A24

List price: 13,000 yen

DC / DC converter ideal for distributed power supply system configurations
Brick size, a standard package for the global telecommunications equipment industry
Overcurrent protection / overvoltage protection / overheat protection
Remote control possible

Product overview

 

250W

DC280V input
COSEL DHS250B24

List price: 13,000 yen

DC / DC converter ideal for distributed power supply system configurations
Brick size, a standard package for the global telecommunications equipment industry
Overcurrent protection / overvoltage protection / overheat protection
Remote control possible

Product overview

 

300W

DC48V input
COSEL CHS3004824

List price: 9,100 yen (with base plate: 9,600 yen, with base plate and case: 9,720 yen)

DC / DC converter ideal for 24V / 48V DC power supply systems that require high reliability
Brick size, a standard package for the global telecommunications equipment industry
Supply stable voltage as system bus voltage
Overcurrent protection / overvoltage protection / overheat protection
Remote sensing
Remote control is possible (-U: The protection circuit can be reset by remote control)

Product overview

 

DC280V input
TDK-Lambda PH300A28-24

List price: 15,000 yen

● Wide input voltage range, 200 to 425VDC ● Miniaturization, industry standard half brick size ● Wide range of operation Base plate temperature: -40 to + 100 ℃ ● EN62477-1 OVCⅢ certification

Product overview

 

350W

DC48V input
COSEL CBS3504824

List price: 13,500 yen

DC / DC converter ideal for DC24V and DC48V power supply systems that require high reliability
Achieves high power density and high power output by using a metal substrate
Wide variable output voltage range allows arbitrary output voltage setting
With overcurrent protection / overvoltage protection / overheat protection circuit
Remote control is possible (overvoltage protection and overheat protection can be reset by remote control when input voltage is applied)

Product overview

 

400W

DC48V input
COSEL CHS4004824

List price: 11,000 yen (with base plate: 11,500 yen, with base plate and case: 11,620 yen)

DC / DC converter ideal for DC24V and DC48V power supply systems that require high reliability
Supply stable voltage as system bus voltage
Overcurrent protection / overvoltage protection / overheat protection
Remote sensing and remote control possible (-U: The protection circuit can be reset by remote control)

Product overview

 

DC280V input
COSEL DBS400B24

List price: 21,000 yen

DC / DC converter ideal for distributed generation system configurations
Achieves high power density and high power output by using a metal substrate
Wide variable output voltage range allows arbitrary output voltage setting
With overcurrent protection / overvoltage protection / overheat protection circuit
Inverter operation monitor with overheat detection signal output
Remote control possible (input side / output side)
Parallel operation possible
N + 1 redundant operation possible

Product overview

 

450W

DC48V input
COSEL CBS4504824

List price: 15,000 yen

DC / DC converter ideal for DC24V and DC48V power supply systems that require high reliability
Achieves high power density and high power output by using a metal substrate
Wide variable output voltage range allows arbitrary output voltage setting
With overcurrent protection / overvoltage protection / overheat protection circuit
Remote control is possible (overvoltage protection and overheat protection can be reset by remote control when input voltage is applied)

Product overview

 

DC280V input
TDK-Lambda PAF450F280-24

List price: 19,900 yen

● Base plate operating temperature: -40 to + 100 ° C
● High efficiency: 91% max
● Multi-function: Remote sense (+ S, -S), ON / OFF control (CNT), Variable output voltage (TRM), Inverter operation monitor (IOG), Parallel control (PC), Auxiliary power supply (AUX), Overvoltage protection ( OVP), overcurrent protection (OCP)

Product overview

You will not regret it if you choose from the recommended 24V output power supplies!

We have delivered in detail from how to choose a switching power supply well to recommended models. Since there are too many types and it is difficult to decide which manufacturer to buy, it is important to properly identify the features and differences and select the power supply that suits the device or device.

Once installed in the device, it will not be replaced, so please select one that is completely satisfying!

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