# Non Isolated POL DC/DC Converter, Thirty Second Brick, 135 W, 5 V, 30 V, 4.5 A

![Product image](https://novapart.co/image/farnell:3858965/)

**URL**: https://novapart.co/products/RPMA5.0-4.5/OF/non-isolated-pol-dc-converter-thirty-second-brick
**SKU**: RPMA5.0-4.5/OF
**Manufacturer**: RECOM POWER
**Category**: Power & Line Protection || Power Supplies || DC / DC Converters || DC / DC Non Isolated Board Mount Converters - Adjustable Output
**Price**: €26.5800
**Stock**: 10+

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2020) |
| Depth | 23.4mm |
| Width | 19.1mm |
| Height | 9.6mm |
| Product Range | RPMA-4.5 Series |
| Output Power Max | 135W |
| Output Current Max | 4.5A |
| Output Voltage Max | 30V |
| Output Voltage Min | 5V |
| Input Voltage Dc Max | 53V |
| Input Voltage Dc Min | 9V |
| Dc / Dc Converter Type | Thirty Second Brick |
| Power Supply Applications | - |
| Dc / Dc Converter Output Type | Adjustable |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3858965/)

Features • 4.5A industrial grade non-isolated DC/DC • Compact, industry standard 1/32nd brick format **DC/DC Converter** • Efficiency up to 98% Switching • 9-53V input voltage Regulator • 5-30V adjustable output voltage **RPMA-4.5/OF** ee ~~—~~ Description **4.5 Amp** The RPMA5.0-4.5/OF is a high efficiency non-isolated buck converter with up to 4.5A output **3 1/32 Brick** tarrasty current in a 1/32nd brick footprint. The input voltage range is from 9-53VDC, and the output voltage is trimmable from 5-30VDC via a fixed trim resistor. Typical applications for these highly compact, reliable converters include distributed power architecture voltage conversion from 12, 24, 28, **Open Frame** 36, and 48V bus systems for industrial, medical, test and measurement, and telecom equipment. With an efficiency up to 98%, the converter operates at temperatures from -40°C to +85°C and comes **Single Output** with RECOM’s standard 3 year warranty. 

**==> picture [526 x 287] intentionally omitted <==**

**----- Start of picture text -----**<br>
The RPMA5.0-4.5/OF is a high efficiency non-isolated buck converter with up to 4.5A output  3<br>1/32 Brick tarrasty<br>current in a 1/32nd brick footprint. The input voltage range is from 9-53VDC, and the output voltage is<br>trimmable from 5-30VDC via a fixed trim resistor. Typical applications for these highly compact,<br>reliable converters include distributed power architecture voltage conversion from 12, 24, 28,  Open Frame<br>36, and 48V bus systems for industrial, medical, test and measurement, and telecom equipment.<br>With an efficiency up to 98%, the converter operates at temperatures from -40°C to +85°C and comes<br>Single Output<br>with RECOM’s standard 3 year warranty.<br>a i= he J<br>ST pe f<br>q i ,<br>HD<br>ii t api i 7<br>Selection Guide<br>Part Input Output Voltage Max. Output Efficiency<br>Number Voltage Range  Adjustment Range  [(1)] Current typ.  [(2)]<br>[VDC] [VDC]              [A] [%] oY RoHS ifs”7” 2+ \% 4 REACH z 7y<br>RPMA5.0-4.5/OF 9-53 5-30 4.5 96.5 vi compliant10 from 10 ;Js KaeACH compliant  }: E224736 C US<br>Notes:<br>Note1:  External trim resistor is mandatory, do not leave floating<br>Note2: Efficiency tested at VIN= 36VDC, full load and VOUT= 24VDC<br>UL/CSA 62368-1 certified<br>T T<br>ON ON<br>N P N P<br>C V C<br>R<br>V<br>A A R<br>E<br>O<br>E<br>I I O<br>M M<br>L L<br>R R<br>P D P D<br>O T O T<br>U U<br>C C<br>M M<br>E E<br>C C<br>E R E R<br>O T O T<br>R S R<br>S<br>S<br>C C S<br>**----- End of picture text -----**<br>


## Model Numbering 

## RPMA5.0-4.5/OF 

Open Frame package Max. Output Current 

REV.:  2/2025 

I-1 

**www.recom-power.com** 

## **RPMA-4.5/OF** 

## **DC/DC Converter** 

## **Series** 

Specifications (measured @ Ta= 25°C, full load and after warm-up unless otherwise stated) 

|BASIC CHARACTERISTICS|BASIC CHARACTERISTICS|BASIC CHARACTERISTICS|BASIC CHARACTERISTICS|BASIC CHARACTERISTICS|BASIC CHARACTERISTICS|BASIC CHARACTERISTICS|
|---|---|---|---|---|---|---|
|Parameter|Condition|||Min.|Typ.|Max.|
|Absolute Maximum Input Voltage||||-0.25VDC||55VDC|
|Input Voltage Range||||9VDC|VDC|53VDC|
|Under Voltage Lockout (UVLO)|DC-DC ON<br>DC-DC OFF<br>hysteresis||||8VDC<br>7VDC<br>1VDC||
|Input Current|VIN= 28VDC, VOUT= 24VDC, full load|||||10A|
|Inrush Current||||||1A²s|
|Quiescent Current|VIN= 48VDC, VOUT= 24VDC, no load||||50mA||
|Output Voltage Trimming|refer to“OUTPUT VOLTAGE TRIMMING”|||5VDC||30VDC|
|Output Current||||||4.5A|
|Minimum Load||||0%|||
|Start-up Time|power up / CTRL ON/OFF||||11ms||
|Rise Time|||||7ms||
|ON/OFF CTRL|DC-DC ON<br>DC-DC OFF|||Short or 0VDC<VCTRL<0.5VDC<br>Open or 3.1VDC<VCTRL<13.2VDC|||
|Input Current of CTRL Pin|DC-DC OFF||||2mA||
|Internal Operating Frequency|||||300kHz||
|Output Ripple and Noise|20MHz BW, 1μF ceramic capacitor and 22μF ceramic capacitor||||150mVp-p||
|Refected Back Ripple Current|||||2.5mAp-p||
|Remote Sense(3)|||%VOUTnom.|0%||5%|
|Maximum Capacitive Load||||||1200µF|
|continued on nextpage<br>VOUT= 5VDC<br>Effciency vs. Output Current<br>0<br>10<br>20<br>30<br>40<br>50<br>60<br>70<br>80<br>90<br>100<br>100<br>80<br>60<br>40<br>90<br>70<br>50<br>30<br>20<br>10<br>0<br>Efficiency [%]<br>Output Load [%]<br>9Vin<br>12Vin<br>~~15Vin~~<br>24Vin<br>36Vin<br>~~53Vin~~<br>VOUT= 9VDC<br>0<br>10<br>20<br>30<br>40<br>50<br>60<br>70<br>80<br>90<br>100<br>100<br>80<br>60<br>40<br>90<br>70<br>50<br>30<br>20<br>10<br>0<br>Efficiency [%]<br>Output Load [%]<br>12Vin<br>24Vin<br>~~36Vin~~<br>42Vin<br>48Vin<br>~~53Vin~~<br>Notes:<br>Note3:  If sense function is not being used, connect Sense pin to +Vout pin||Notes:|||||



REV.:  2/2025 

I-2 

**www.recom-power.com** 

## **RPMA-4.5/OF** 

## **DC/DC Converter** 

## **Series** 

Specifications (measured @ Ta= 25°C, full load and after warm-up unless otherwise stated) 

Efficiency vs. Output Current VOUT= 12VDCOUT= 12VDC= 12VDC 

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**----- Start of picture text -----**<br>
VOUT= 12VDCOUT= 12VDC= 12VDC VOUT= 15VDC<br>100 100<br>90 90<br>80 80<br>70 70<br>60 60<br>50 50<br>15Vin 18Vin<br>40 40<br>24Vin 24Vin<br>30 36Vin 30 36Vin<br>42Vin 42Vin<br>20 20<br>48Vin 48Vin<br>10 53Vin 10 53Vin<br>0 0<br>0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100<br>Output Load [%] Output Load [%]<br>Efficiency vs. Output Current<br>VOUT= 24VDC VOUT= 30VDC<br>100 100<br>90 90<br>80 80<br>70 70<br>60 60<br>50 50<br>30Vin<br>40 40 36Vin<br>36Vin<br>42Vin<br>30 42Vin 30<br>48Vin<br>48Vin<br>20 20 53Vin<br>53Vin<br>10 10<br>0 0<br>0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100<br>Output Load [%] Output Load [%]<br>Output Voltage vs.  Input Voltage<br>35<br>30<br>25<br>20<br>15<br>Lower Limit<br>10 Upper Limit<br>5<br>0<br>0 10 20 30 40 50 60<br>9 53<br>Input Voltage [VDC]<br>Efficiency [%] Efficiency [%]<br>Efficiency [%] Efficiency [%]<br>Output Voltage [VDC]<br>**----- End of picture text -----**<br>


REV.:  2/2025 

I-3 

**www.recom-power.com** 

## **RPMA-4.5/OF** 

## **DC/DC Converter** 

## **Series** 

Specifications (measured @ Ta= 25°C, full load and after warm-up unless otherwise stated) 

## ON/OFF CTRL 

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+Vin IIN +Vin +Vout +Vout<br>VCTRL ICTRL CTRL Negative Logic DC-DC ON Short or 0VDC < VCTRL < 0.5VDC<br>DC-DC OFF Open or 3.1VDC < VCTRL < 13.2VDC<br>-Vin -Vin -Vout -Vout<br>**----- End of picture text -----**<br>


## OUTPUT VOLTAGE TRIMMING 

The output voltage of the RPMA5.0-4.5/OF can be trimmed between 5VDC and 30VDC by using an external trim resistor. The values for the trim resistor are according to standard E96 values; therefore, the specified voltage may slightly vary.  Resistor values may be calculated with the following equation: 

**==> picture [440 x 285] intentionally omitted <==**

**----- Start of picture text -----**<br>
TRIM<br>Rtrim<br>-VOUT<br>VOUTnom  = nom. output voltage  [VDC]<br>Calculation:<br>VOUTset  = trimmed output voltage [VDC]<br>𝑹𝑹𝒕 𝒕 =  𝑉𝑉𝑂 𝑉𝑉𝑂𝑟 𝑟𝑟𝑂𝑂𝑟 𝑥𝑥  𝑘𝑘−2.59 − 0.511 = kΩ Vref  = reference voltage  [VDC]<br>Rtrim = external trim resistor  [kΩ]<br>k   = trim factor  [ 36.5]<br>Practical Example V O UTse t = 15VDC: Practical Example V O UTse t = 24VDC:<br>0.6VDC x 36.5 0.6VDC x 36.5<br>Rtrim = 15 - 2.59   - 0.511= 1.254kΩ Rtrim = 24 - 2.59   - 0.511= 512Ω<br>Rtrim according to E96 ≈ 1k25Ω Rtrim according to E96 ≈ 511Ω<br>VOUTset = 15 18 24 28 30 [VDC]<br>Rtrim E96 ≈ 1k25 909 511 348 287 [Ω]<br>**----- End of picture text -----**<br>


## REGULATIONS 

|REGULATIONS|REGULATIONS|REGULATIONS|
|---|---|---|
|Parameter|Condition|Value|
|Output Accuracy|excludingtrimmingtolerances|±2.0% typ.|
|Line Regulation|low line to high line, full load|±0.2% typ.|
|Load Regulation|0% to 100% load|1.0% typ.|
|Transient Response|50% load step<br>recoverytime|350mV typ.<br>30µs typ.|



REV.:  2/2025 

I-4 

**www.recom-power.com** 

## **RPMA-4.5/OF** 

## **DC/DC Converter** 

## **Series** 

Specifications (measured @ Ta= 25°C, full load and after warm-up unless otherwise stated) 

|PROTECTIONS|PROTECTIONS|PROTECTIONS|
|---|---|---|
|Parameter|Condition|Value|
|Over Current Protection(OCP)||9A, hiccup mode|
|Over Temperature Protection(OTP)|on TC point|135°C, automatic restart|



|ENVIRONMENTAL|ENVIRONMENTAL|ENVIRONMENTAL|ENVIRONMENTAL|
|---|---|---|---|
|Parameter|Condition||Value|
|OperatingTemperature Range|refer to belowgraphs||-40°C to +85°C|
|Maximum Case Temperature|||+120°C|
|OperatingAltitude|||5000m|
|OperatingHumidity|non-condensing||95% RH max.|
|Pollution Degree|||PD2|
|MTBF|accordingto Telcordia SR332 Issue 3|80% load, TAMB=40°C, airfow= 1.5m/s|82797 x 103hours|
|-40<br>0<br>40 50<br>80 90<br>85<br>-20 -10<br>-30<br>20 30<br>10<br>60 70<br>100<br>100<br>80<br>60<br>40<br>90<br>70<br>50<br>30<br>20<br>10<br>0<br>Output Load [%]<br>Ambient Temperature [°C]<br>~~natural convection (0.1m/s)~~<br>0.5m/s<br>~~1.0m/s~~<br>~~1.5m/s~~<br>-40<br>0<br>40<br>30<br>80<br>70<br>85<br>-20 -10<br>-30<br>20<br>10<br>60<br>50<br>100<br>90<br>100<br>80<br>60<br>40<br>90<br>70<br>50<br>30<br>20<br>10<br>0<br>Output Load [%]<br>Ambient Temperature [°C]<br>~~natural convection (0.1m/s)~~<br>0.5m/s<br>~~1.0m/s~~<br>~~1.5m/s~~<br>2.0m/s<br>Derating Graph<br>(@ Chamber)<br>VIN= 48VDC, VOUT= 18VDC<br>VIN= 48VDC, VOUT= 24VDC||||



## SAFETY AND CERTIFICATIONS 

Certificate Type (Safety) Report / File Number Standard Audio/Video, information and communication technology equipment - UL62368-1:2014 Part1: Safety requirements CAN/CSA-C22.2 No. 62368-1:2014 RoHS2 RoHS 2011/65/EU + AM2015/863 

## DIMENSION AND PHYSICAL CHARACTERISTICS 

|Parameter|Type||Value|
|---|---|---|---|
|Material|PCB||FR4,(UL94V-0)|
|Dimension(LxWxH)||19.1 x 23.4 x 9.6mm||
|Weight|||8gtyp.|



continued on next page 

REV.:  2/2025 

I-5 

**www.recom-power.com** 

## **RPMA-4.5/OF** 

## **DC/DC Converter** 

## **Series** 

Specifications (measured @ Ta= 25°C, full load and after warm-up unless otherwise stated) 

## Dimension Drawing (mm) 

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**----- Start of picture text -----**<br>
19.1<br>1.3X 45° 9.8<br>Pin1 ID<br>1 8 Pinning Information<br>Pin # Function<br>7<br>1 +Vin<br>2 6 2 CTRL<br>Ø6.0 min.<br>3 -Vin<br>5 pick and place<br>4 -Vout<br>tc<br>3 4 5 NC<br>6 Trim<br>7 +Sense [(3)]<br>1.60 9.5<br>8 +Vout<br>Tolerance:<br>xx.x = ±0.5mm<br>xx.xx =  ±0.25mm<br>6X Ø1.0 2X Ø1.5 customer PCB<br>with 1.8 shoulder with 2.3 shoulder<br>Recommended Footprint Details<br>20.1 2X Ø1.9<br>13.64<br>6X Ø1.4<br>1<br>3 4<br>Top View<br>Bottom View<br>5<br>2 6<br>7<br>1 8<br>2.66 3.16<br>14.0<br>23.4 20.2<br>7.3<br>9.6 MAX<br>3.7<br>24.4<br>15.24 15.24<br>3.81 11.43<br>7.62 7.62 4.56<br>4.06 4.06<br>**----- End of picture text -----**<br>


|PACKAGING INFORMATION|PACKAGING INFORMATION|PACKAGING INFORMATION|
|---|---|---|
|Parameter|Type|Value|
|PackagingDimension(LxWxH)|cardboard box|221.0 x 128.0 x 33.0mm|
|PackagingQuantity||20pcs|
|Storage Temperature Range||-55°C to +125°C|
|Storage Humidity|non-condensing|95% RH max.|



The product information and specifications may be subject to changes even without prior written notice.The product has been designed for various applications; its suitability lies in the responsibility of each customer. The products are not authorized for use in safety-critical applications without RECOM’s explicit written consent. A safety-critical application is an application where a failure may reasonably be expected to endanger or cause loss of life, inflict bodily harm or damage property. The applicant shall indemnify and hold harmless RECOM, its affiliated companies and its representatives against any damage claims in connection with the unauthorized use of RECOM products in such safety-critical applications. 

REV.:  2/2025 

I-6 

**www.recom-power.com** 



## Links

- [View this product on Novapart](https://novapart.co/products/RPMA5.0-4.5/OF/non-isolated-pol-dc-converter-thirty-second-brick)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/recom-power/rpma5-0-4-5-of/dc-dc-converter-5-30v-4-5a/dp/3858965)
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