VF-D250-D1224A-CF

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**date** 07/02/2019 **page** 1 of 5 

## **SERIES:** VF-D250-DXXA-CF **DESCRIPTION:** AC-DC POWER SUPPLY **│** 

## **FEATURES** 

- up to 250 W continuous power 

- 600W peak power within 500 µS duty duration 

- metal top cover and fan 

- passive power correction 

- dual outputs 

- power good signal 

- remote on/off control 

- 3000 Vac isolation voltage 

- over load, over voltage, over temperature, and short circuit protections 

- UL, cUL, and TUV 62368-1 safety approvals 

- efficiency up to 70% 

## RoHS C Als 

|**MODEL**|**output**<br>**voltage**|**output**<br>**current**|**output1**<br>**power**|**ripple and**<br>**noise2,3**|**efficiency**|
|---|---|---|---|---|---|
|||**max**|**max**|**max**|**typ**|
||**(Vdc)**|**(A)**|**(W)**|**(mVp-p)**|**(%)**|
|VF-D250-D312A-CF|3.3<br>12|24<br>12|200|50<br>120|70%|
|VF-D250-D324A-CF|3.3<br>24|24<br>6|200|50<br>240|70%|
|VF-D250-D512A-CF|5<br>12|24<br>12|200|50<br>120|70%|
|VF-D250-D524A-CF|5<br>24|24<br>6|200|50<br>240|70%|
|VF-D250-D548A-CF|5<br>48|24<br>3|200|50<br>480|70%|
|VF-D250-D1224A-CF|12<br>24|12<br>6|250|120<br>240|70%|



- Notes: 1. Maximum total combined power 

2. 10% minimum load is required to maintain the ripple and regulation. 

3. Ripple and noise is measured from 10 KHz to 20 MHz at output terminals with a 0.1 μF ceramic capacitor and a 22 μF electrolytic capacitor in parallel. 

## **PART NUMBER KEY** 

## **- VF D250 - DXX A - CF- X X** 

Base Number Output Voltage 

Low leakage option: “blank” = standard specification L = low leakage (contact factory) 

Input/Output connector: “blank” = Terminal block input / Terminal block output 

1 = Molex input / Molex output 

2 = Molex input / Terminal block output 

- 3 = Terminal block input / Molex output 

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**CUI Inc │ SERIES:** VF-D250-DXXA-CF **│ DESCRIPTION:** AC-DC POWER SUPPLY 

**date** 07/02/2019 **│ page** 2 of 5 

## **INPUT** 

|**INPUT**||||||
|---|---|---|---|---|---|
|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
|voltage|auto selectable|90<br>180||132<br>264|Vac<br>Vac|
|frequency||47||63|Hz|
|current|at 110~120 Vac, cold start<br>at 200~240 Vac, cold start|||6<br>3|A<br>A|
|inrush current|at 115 Vac, full load, cold start<br>at 230 Vac, full load, cold start|||35<br>70|A<br>A|
|power factor|compliant to EN 61000-3-2 class A|||||
|remote on/of|designated as RMSW on the CN1, requires a low|signal to inhibit|output, hiccup|mode||



## **OUTPUT** 

|**OUTPUT**||||||
|---|---|---|---|---|---|
|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
|regulation|||±5||%|
|transient response|Output voltage returns to within 1% in less than 2.5 ms for a 50%<br>Peak transient does not exceed 5%.||load change.|||
|start-up time|at 230 Vac|||1|s|
|hold-up time|at 80% of rated maximim load|20|||ms|
|adjustability|||±5||%|
|switching frequency|fxed||25||kHz|
||Designated as PG on the CN1.|||||
|power good|This signal goes high 100~500 ms after the output reaches regulation.|||||
||It goes low at least 1 ms before loss of regulation (open collector).|||||
|fan drive|12 Vdc / 300 mA for external fan|||||



## **PROTECTIONS** 

|**PROTECTIONS**||||||
|---|---|---|---|---|---|
|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
|over voltage protection|AC input needs to be reset to restart the power supply|||130|%|
|over current protection|automatically recovers|110||140|%|
|short circuit protection|short circuit can be continuous, recovers automatically|||||
|over temperature protection|auto recovery||110||°C|



## **SAFETY & COMPLIANCE** 

|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
|---|---|---|---|---|---|
||applied for 3 seconds at 10 mA max.|||||
|isolation voltage|primary to secondary<br>primary to transformer core|3,000<br>1,500|||Vac<br>Vac|
||primary to earth chassis|1,500|||Vac|
|safety approvals|IEC/EN/UL 62368-1|||||
|EMI/EMC|EN 55032 Class B conducted / radiated, EN 61000-3-2, EN 61000-3-3, EN 55024 (IEC 61000-4-2,<br>IEC 61000-4-3, IEC 61000-4-4, IEC 61000-4-5, IEC 61000-4-6, IEC 61000-4-8, IEC 61000-4-11)|||||
||standard model at 264 Vac|||1|mA|
|leakage current|low-leakage model at 240 Vac|||500|μA|
||low-leakage model at 120 Vac|||300|μA|
|RoHS|yes|||||
|MTBF|according to MIL-HDBK-217 at 30 ºC|100,000|||hrs|



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**CUI Inc │ SERIES:** VF-D250-DXXA-CF **│ DESCRIPTION:** AC-DC POWER SUPPLY 

**date** 07/02/2019 **│ page** 3 of 5 

## **ENVIRONMENTAL** 

|**ENVIRONMENTAL**||||||
|---|---|---|---|---|---|
|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
|operating temperature|see derating curve|0||70|°C|
|storage temperature||-20||85|°C|
|operating humidity|non-condensing|5||90|%|
|storage humidity|non-condensing|5||95|%|
|vibration|Acceleration ± 7.35 M/(SxS), on X, Y and Z Axis|5||50|Hz|



## **DERATING CURVES** 

## output power vs. ambient temperature 

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100<br>80<br>60<br>50<br>40<br>20<br>0 10 20 30 40 50 60 70<br>Ambient Temperature (°C)<br>Load (%)<br>**----- End of picture text -----**<br>


## **MECHANICAL** 

|**MECHANICAL**||||||
|---|---|---|---|---|---|
|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
|dimensions|5(L) x 3.2(W) x 2(H)||||inches|
|weight||||550|g|



**cui** .com 

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**CUI Inc │ SERIES:** VF-D250-DXXA-CF **│ DESCRIPTION:** AC-DC POWER SUPPLY 

**date** 07/02/2019 **│ page** 4 of 5 

## **MECHANICAL DRAWING** 

units: mm 

|||
|---|---|
|**CN1**||
|1|ground|
|2|ac neutral|



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CN2<br>1 Vo2<br>2 RTN<br>INPUT<br>3 RTN<br>4 RTN<br>5 RTN<br>6 Vo1<br>7 Vo1<br>8 Vo1<br>**----- End of picture text -----**<br>


|||
|---|---|
|**CN3**||
|1|Power Good|
|2|remote switch|
|3|RTN|



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OUTPUT<br>**----- End of picture text -----**<br>


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Notes: 

1. CN1 mates with molex part no. 09-93-0500 or equivalent and molex 2478, 2578, 8818 crimp pins. 

2. CN2 mates with molex part no. 09-93-0800 and molex 2478, 2578, 8818 crimp pins. 

3. CN3 mates with JST part no. XHP-3 or equivalent (CHYAO SHIUNN JS-2001-03) and JST SXH-002T-P0.6 mating pins 

4. Fan drive connector mates with JST part no. XHP-2 or equivalent (CHYAO SHIUNN JS-2001-02). 

5. Mounting hole maximum M3 screw penetration depth is 2.1 mm. 

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**CUI Inc │ SERIES:** VF-D250-DXXA-CF **│ DESCRIPTION:** AC-DC POWER SUPPLY 

**date** 07/02/2019 **│ page** 5 of 5 

## **REVISION HISTORY** 

|**rev.**|**description**|**date**|
|---|---|---|
|1.0|initial release|05/05/2009|
|1.01|new template applied|12/17/2011|
|1.02|V-Infnitybrandingremoved|08/28/2012|
|1.03|updated spec|03/29/2013|
|1.04|updated spec|01/19/2018|
|1.05|updated datasheet|07/10/2018|
|1.06|updated to be certifed to 62368-1 safetystandard|07/02/2019|



The revision history provided is for informational purposes only and is believed to be accurate. 

**Headquarters** 20050 SW 112th Ave. Tualatin, OR 97062 **800.275.4899** 

Fax 503.612.2383 **cui** .com techsupport@cui.com 

CUI offers a two (2) year limited warranty.  Complete warranty information is listed on our website. 

CUI reserves the right to make changes to the product at any time without notice.  Information provided by CUI is believed to be accurate and reliable.  However, no responsibility is assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use. 

CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability.  A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.