# AC/DC PCB Mount Power Supply (PSU), ITE & Industrial, 1 Output, 320 W, 28 V, 11.42 A

![Product image](https://novapart.co/image/farnell:4951551/)

**URL**: https://novapart.co/products/ASB320PS28/ac-dc-pcb-mount-power-supply-psu-ite-industrial-1
**SKU**: ASB320PS28
**Manufacturer**: XP POWER
**Category**: Power & Line Protection || Power Supplies || AC / DC Converters || AC / DC PCB Mount Power Supplies
**Price**: €196.0100
**Stock**: 10+
**Lead Time**: 92 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (15-Jan-2018) |
| Depth | 116.8mm |
| Width | 85mm |
| Height | 19.7mm |
| Product Range | ASB320 Series |
| No. Of Outputs | 1 Output |
| Output Power Max | 320W |
| Input Voltage Vac | 90V AC to 264V AC |
| Power Supply Output Type | Fixed |
| Output Current - Output 1 | 11.42A |
| Output Current - Output 2 | - |
| Output Current - Output 3 | - |
| Output Voltage - Output 1 | 28V |
| Output Voltage - Output 2 | - |
| Output Voltage - Output 3 | - |
| Power Supply Applications | ITE & Industrial |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4951551/)

ASB320 series 

## 320W **Baseplatecooled** 

**AC-DC power supplies** 

The ASB320 Series is a range of 320W complete, baseplate-cooled AC-DC power supplies offering single outputs from 12V to 54VDC in a compact, encapsulated brick format. Featuring built-in EMC filter, AC fuse and bulk storage capacitor, the ASB320 simplifies system design by providing a complete AC-DC power solution ready for installation into end applications. High efficiency and baseplate cooling enable efficient thermal management, supporting reliable operation in compact and sealed enclosures. 

Global ITE safety approvals, Class B emissions and a low profile rugged mechanical design make the ASB320 series an ideal solution to a wide range of applications including industrial automation, analytical instrumentation, test and measurement and communications equipment. 

## **Features** 

- f Baseplate cooled encapsulated brick package 

- f Single outputs from 12V to 54VDC 

- f Output voltage trim ±5% 

- f Input range: 90 to 264VAC 

- f High efficiency, up to 94% 

- f Peak power up to 360W for 5s 

- f Class B conducted & radiated emissions 

- f Over current, over voltage & over temperature protection 

**==> picture [146 x 117] intentionally omitted <==**

**----- Start of picture text -----**<br>
Applications<br>CR<br>Industrial  Analytical  Test and<br>electronics instrumentation measurement<br>®<br>Communications<br>**----- End of picture text -----**<br>


## **Dimensions** 

116.8 x 85.0 x 19.7 mm (4.60” x 3.35” x 0.78”) Fully encapsulated brick package 

## **Documentation** 

For further information click the link or scan the code xppower.com 

- f -40°C to +90°C baseplate operating temperature 

- f 3 year warranty 

## **Models & ratings** 

|Model number|Output voltage|Output current|Efficiency(1)|Output power|Maximum capacitive load(2)|
|---|---|---|---|---|---|
|ASB320PS12|12.0V|26.6A|92.0%|320W|25000µF|
|ASB320PS15|15.0V|21.3A|92.0%||20000µF|
|ASB320PS24|24.0V|13.33A|93.0%||12500µF|
|ASB320PS28|28.0V|11.42A|93.0%||10700µF|
|ASB320PS36|36.0V|8.88A|94.0%||8300µF|
|ASB320PS48|48.0V|6.66A|94.0%||6250µF|
|ASB320PS54|54.0V|5.92A|94.0%||5550µF|



Notes: 

1.  Typical efficiency with 230VAC input and full load. 

2. 115VAC & 230VAC, full load +25°C. 

1 L] 

**AC-DC power supplies** 

## ASB320 series 

## **Input** 

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Characteristic Minimum Typical Maximum Units Notes & conditions<br>**----- End of picture text -----**<br>


|Characteristc|Minimum|Typical|Maximum|Units|Notes & conditons|
|---|---|---|---|---|---|
|||||||
|Input voltage|90||264|VAC|See derating curve|
|Input frequency|47||63|Hz||
|Input current|||4|A|100VAC full load|
|Inrush current|||40|A|240 VAC cold start, +25°C|
|Earth leakage current|||750|µA|264 VAC, 60Hz|
|Power factor|0.95|0.98|||230VAC, 50Hz full load|
|No load input power|||0.5|W||
|Input protection|Internal fuse T6.3A/250VAC ftted in line|||||



## **Output** 

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Characteristic Minimum Typical Maximum Units Notes & conditions<br>**----- End of picture text -----**<br>


|Characteristc|Minimum|Typical|Maximum|Units|Notes & conditons|
|---|---|---|---|---|---|
|||||||
|Output voltage|12||54|VDC|See models and ratings table|
|Initial set accuracy||1||%|At full load|
|Output voltage trim|95||105|%|Of nominal output voltage. See application note|
|Minimum load|No minimum load required|||||
|Start up delay|||2.0|s||
|Start up rise time|||100|ms||
|Hold up time|20|25||ms|Full load and 115VAC|
|Line regulation|||±0.5|%||
|Load regulation|||±1.0|%||
|Transient response|||2|%|Maximum deviation, recovering to less than 1% within 300µs for 25%<br>step load|
|Ripple & noise|||1|% pk-pk|Measured with 20MHz bandwidth and 10µF electrolytic in parallel with<br>0.1µF ceramic capacitor|
|Overload protection|115||175|%||
|Overvoltage protection|110||140|%|Vnom, recycle input to reset, 48V & 54V models OVP <60V|
|Short circuit protection|Trip & restart (hiccup), auto resetting|||||
|Thermal protection|Measured at the baseplate, auto resetting|||||
|Temperature coeffcient||0.02||%/˚C|After 20 minute warm up|



## **General** 

|Characteristc|Minimum|Typical|Maximum|Units|Notes & conditons|
|---|---|---|---|---|---|
|Effciency||94||%|See models and ratings table|
|Isolation:  input to output<br>input to ground<br>output to ground|||3000|VAC||
||||1800|VAC||
||||1800|VAC||
|Switching frequency||75||kHz|Main converter|
||30||100||PFC, variable, load dependent|
|Power density||26.62||W/in3||
|Mean time between failure|200|||khrs|MIL-HDBK-217F at +25°C GB and 115VAC.|
|Weight||423 (0.933)||g (lb)||



Specifications subject to change without notice. 

2 

**AC-DC power supplies** 

## ASB320 series 

## **Environmental** 

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Characteristic Minimum Typical Maximum Units Notes & conditions<br>**----- End of picture text -----**<br>


|Characteristc|Minimum|Typical|Maximum|Units|Notes & conditons|
|---|---|---|---|---|---|
|||||||
|Operating temperature|-40||+90|°C|Baseplate temperature, see derating curve. Safety approved at +40°C<br>only|
|Cooling|Conduction cooled via baseplate|||||
|Operating humidity|5||90|%RH|Non-condensing|
|Storage temperature|-40||+100|°C||
|Operating altitude|||5000|m||
|Shock|IEC68-2-27, 30g, 11ms half sine, 3 times in each of 6 axes|||||
|Vibration|IEC68-2-6, 10-500Hz, 2g 10 mins/sweep, 60 mins for each of 3 axes|||||



## **EMC: emissions** 

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Phenomenon Standard Test level Notes & conditions<br>**----- End of picture text -----**<br>


|Phenomenon|Standard|Test level|Notes & conditons|
|---|---|---|---|
|||||
|Conducted|EN55032|Class B||
|Radiated||||
|Harmonic currents|EN61000-3-2|Class A||
|Voltage ficker|EN61000-3-3|||



## **EMC: immunity** 

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Phenomenon Standard Test level Criteria Notes & conditions<br>**----- End of picture text -----**<br>


|Phenomenon|Standard|Test level|Criteria|Notes & conditons|
|---|---|---|---|---|
||||||
|ESD|EN61000-4-2|8kV air / ±4kV contact|A||
|Radiated immunity|EN61000-4-3|10V/m|A||
|EFT/burst|EN61000-4-4|±2kV|A||
|Surge|EN61000-4-5|Installation class 3|A|±2kV line to line, ±4kV line to earth|
|Conducted|EN61000-4-6|10V|A||
|Magnetic feld|EN61000-4-8|30A/m|A||
|Dips and interruptions|EN61000-4-11|Dip: 100% 20ms|A||
|||Dip: 30% 500ms|A||
|||Int: 100% 5000ms|B||



## **Safety approvals** 

|Safety agency|Standard|Notes & conditons|
|---|---|---|
|UL|UL62368-1||
|TUV|EN62368-1||
|CB|IEC62368-1||
|CE|Meets all applicable directives||
|UKCA|Meets all applicable legislation||



3 

**AC-DC power supplies** 

## ASB320 series 

## **Mechanical details** 

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106.7 (4.20)<br>5.1 (0.20)<br>4<br>3<br>5<br>2 6<br>7<br>1<br>8<br>Earth<br>106.7 (4.20)<br>116.8 (4.60)<br>Tc<br>Tc: Baseplate temperature<br>Mounting inserts Ø3.2 (0.13)<br>through 4 places<br>10.16 (0.40)<br>10.16 (0.40)<br>85.0 (3.35) 50.8 (2.00)<br>17.1 (0.67)<br>5.9 (0.23)<br>19.7 (0.78)<br>**----- End of picture text -----**<br>


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Pin Function<br>1 FG<br>2 ACN<br>3 ACL<br>4 +Sense<br>5  +Vout<br>6 Trim<br>7 -Vout<br>8 -Sense<br>Pin diameter  (Ø)<br>Pins 1, 2, 3, 5 & 7:  2.0 ±0.05 (0.08 ±0.002)<br>Pins 4, 6 & 8:  1.0 ±0.05 (0.04 ±0.002)<br>**----- End of picture text -----**<br>


Notes: 

1. Dimensions are in mm (inches). 

2.  Weight: 423g (0.933lbs) 

3. Output pin pitch: 7.6 (0.30) 

4. Pin pitch tolerance: ±0.35 (±0.014) 

5. Case tolerance: ±0.5 (±0.02) 

6. Baseplate is connected to FG Pin 

4 

**AC-DC power supplies** 

## ASB320 series 

## **Derating curve** 

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Ambient Temperature Dera�ng<br>350<br>320<br>300<br>250<br>200<br>150 110VAC with 1.6°C/W or better heatsink.<br>200VAC with 1.6°C/W or better heatsink.<br>100<br>50<br>0<br>-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90<br>Ambient temperature (ºC)<br>Baseplate (Tc) Temperature Dera�ng<br>350<br>320<br>300<br>250<br>200<br>150<br>110VAC with 1.6°C/W or better heatsink.<br>200VAC with 1.6°C/W or better heatsink.<br>100<br>50<br>0<br>-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100<br>Temperature (Tc) ºC<br>Input Dera�ng<br>350<br>320<br>300<br>270<br>250<br>200<br>150<br>100<br>50<br>0<br>90 110 130 150 170 190 200 210 230 250 264 270<br>Input voltage (VAC)<br>Output power (W)<br>Output power (W)<br>Output power (W)<br>**----- End of picture text -----**<br>


When ASB320 is fitted with 1.6°C/W or better heatsink and mounted in horizontal position with heatsink upper most, the baseplate temperature will typically be +85°C in an ambient of +40°C 

5 

**AC-DC power supplies** 

## ASB320 series 

## **Output voltage adjustment** 

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**----- Start of picture text -----**<br>
Trim down Trim up<br>+Vo +Vo<br>Trim Rd Load Trim Ru Load<br>-Vo -Vo<br>**----- End of picture text -----**<br>


## To Trim Down 

Connecting an external resistor (Rd) between the Trim pin and the +Vo pin decreases the output voltage. The following table can be used to determine the required external resistor value to obtain a percentage output voltage change of Δ%. 

|Trim down|12V|15V|24V|28V|36V|48V|54V|
|---|---|---|---|---|---|---|---|
|%|Rd (kΩ)|||||||
|**1**|2297.4|2798.3|5027.1|5938.0|8061.4|12159.9|13042.7|
|**2**|1059.4|1381.7|2522.2|3010.7|4066.2|5873.1|6495.4|
|**3**|681.9|909.4|1670.3|2001.3|2698.7|3842.8|4293.2|
|**4**|499.2|673.3|1241.1|1490.1|2008.1|2839.4|3188.4|
|**5**|391.3|531.7|982.6|1181.3|1591.4|2241.1|2524.3|



## To Trim Up 

Connecting an external resistor (Ru) between the Trim pin and the -Vo pin increases the output voltage. The following table can be used to determine the required external resistor value to obtain a percentage output voltage change of Δ%. 

|Trim up|12V|15V|24V|28V|36V|48V|54V|
|---|---|---|---|---|---|---|---|
|%|Ru (kΩ)|||||||
|**1**|477.8|565.7|627.6|653.0|659.0|615.0|656.6|
|**2**|252.2|282.3|308.4|317.2|322.1|313.9|325.5|
|**3**|171.1|187.9|204.2|209.2|212.9|210.5|216.2|
|**4**|129.4|140.7|152.5|156.0|158.9|158.2|161.7|
|**5**|103.9|112.3|121.6|124.2|126.7|126.7|129.1|



05 May 2026 

6 



## Links

- [View this product on Novapart](https://novapart.co/products/ASB320PS28/ac-dc-pcb-mount-power-supply-psu-ite-industrial-1)
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- [Supplier page](https://es.farnell.com/xp-power/asb320ps28/power-supply-ac-dc-28v-11-42a/dp/4951551)
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