RPX-1.5-EVM-1 - RECOM - Datasheet.Directory

www.recom-power.com REV.: 0/2020 P-1

RPX-1.5-EVM-1

Evaluation Module

• Evaluation platform for RPX-1.5 buck regulator

module

• Thermal design considerations included

• EMI class B ﬁlter

• Easy evaluation of output voltage selection,

control, and sensing functions

Features

Evaluation

Module

Description

The RPX-1.5-EVM-1 generates a constant output voltage selectable from 0.8V, 1.8V, 3.3V,

5V, 12V, 15V, or 24V from a DC input in the range of 4-36V. It has a maximum continuous output

current of 1.5A.

All the functions of the RPX-1.5 such as output voltage selection, control, power good, trim, and output

sense can be readily evaluated. Also the behavior in overload or over-temperature can be evaluated

easily before it is designed in.

The evaluation board also contains the ﬁlter components to meet EMC class B levels. Alternate

component positions are included to allow experimentation to optimize the EMC performance depending

on operating conditions and budget.

Caution:

ESD sensitive. Always follow ESD preventative procedures when

handling the product!

Quick Start Guide

1. Connect P3 to power supply (observe correct polarity!)

2. Connect P4 to the load (no load operation is allowed. For 0.8Vout, please refer to safe

operating area in the RPX-1.5 datasheet)

3. The evaluation module is preset to 5Vout.

The output voltage can be selected with values of 0.8V, 1.8V, 3.3V, 5V, 12V, 15V, and 24V by

shorting a 0W resistor to the respective places as seen in the board silkscreen. For 0.8Vout,

please refer to safe operating area in the RPX-1.5 datasheet.

4. The sense pin is connected to the RPX output pin, so the preset voltage is very accurate at

the output of the RPX. To compensate any losses of the ﬁlter, remove the resistor at R2, and

solder a 0W resistor at R3.

5. CTRL

The device is preset as normally on. It can be disabled by pulling the CTRL pad to GND.

Short R18 to disable the device.

Selection Guide

Part

Number

Input Voltage

Range

[VDC]

Output

Voltage (1)

[VDC]

Output

Current max.

[A]

RPX-1.5-EVM-1 4 - 36 0.8, 1.8, 3.3, 5, 12, 15, 24 1.5

Notes:

Note1: refer to SAFE OPERATING AREA of RPX-1.5 datasheet

www.recom-power.com REV.: 0/2020 P-2

Evaluation Module

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

RPX-1.5-EVM-1

Pin Name Description

1 NC No Connection

2 NC No Connection

Pin Name Description

1 NC No Connection

2 NC No Connection

Pin Name Description

1 GND Common GND

2 VIN Positive Input Voltage (observe correct polarity!)

Pin Name Description

1 GND Common GND

2 VOUT Positive Output Voltage

Pin Name Description

1 GND Negative Input Voltage (GND)

2 VIN Positive Input Voltage

3 PGOOD Power Good Signal

4 VIN Positive Input Voltage

5 CTRL CTRL Pad (leave open if not used)

6 GND Negative Input Voltage (GND)

7 TRIM TRIM Pad (leave open if not used)

8, 9 SENSE Output Voltage Sense Pin (leave open if not used)

10 VOUT Positive Output Voltage

11 GND Negative Output Voltage (GND)

Connector Description

P1 (Not Mounted) P3

P2 (Not Mounted) P4

Pads Direct Connection

Component Placement

RPX-1.5-EVM-1

GND

2 10

3 4 5

VIN

GND

FOR EVALUATION ONLY

www.recom-power.com/eval-ref-boards

VOUT

SENSE

VOUT SELECT

VINPGOOD CTRL GND TRIM SENSE

4V to 36V 1.5A max.

C12

C3 C4 C5 C6

C7 C8 C9 C10

24V

15V

12V

3.3V

1.8V

0.8V

R20

R11

R10

C11

6 7 8

R21

R22R18

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Evaluation Module

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

RPX-1.5-EVM-1

P3 2

L9 2220

L8 1206

L7 0805

GND

PGOOD

GND

CTRL

GND

TRIM

24V

15V

12V

3.3V

1.8V

0.8V

SENSE

VOUT

VIN

SENSE

RPX-1.5

Vout Select

R20

C11C10C9C8C7

R11R10R9R8R7R6

C12

C2C1

R18

C3 C4 C5 C6

L2 1008

L4 0805

L5 1206

L6 2220

L3 RLS-397

514, 15

6, 7, 8

9, 10, 11

Schematic

Description

U1: RPX-1.5 power module.

C1,C2,L1,L2,L3,L4,L5,L6,C3,C4,C5,C6: allow placement of various sized components to test input ﬁlter design. The populated ﬁlter is

designed to meet EN55022 class B.

C7,C8,C9,C10,L7,L8,L9,C11: allow placement of various sized components to test output ﬁlter design. The populated ﬁlter is designed to meet

EN55022 class B.

R1 and R18: conﬁgure CTRL. R1 is populated to enable the RPX-1.5. Short R18 in order to disable the RPX-1.5.

R2: populated 0W resistor for direct output voltage measurement. If sense is desired at a different location, for example after the ﬁlter or

directly at the load, unsolder R2, and connect sense to the new measurement point.

R3: sense point for output voltage after the ﬁlter. To set sense point here, remove R2, and solder a 0W resistor at R3.

VOUT selection: the output voltage can be selected with values of 0.8V, 1.8V, 3.3V, 5V, 12V, 15V, and 24V by shorting a 0W resistor to the

respective places as seen in the board silkscreen.

R21, R22: trim the output voltage. Refer to “OUTPUT VOLTAGE TRIMMING”

Notes:

Note2: Gray colored components are not mounted

www.recom-power.com REV.: 0/2020 P-4

Evaluation Module

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

RPX-1.5-EVM-1

OUTPUT VOLTAGE TRIMMING

Voutset = 1.8V

Trim up Trim up

Trim down Trim down

Voutset = 1.7 1.6 1.5 1.44 [VDC]

Rdown (E96) ≈ 665k 294k 174k 133k [W]

Voutset = 3.1 3 2.8 2.64 [VDC]

Rdown (E96) ≈ 866k 549k 301k 210k [W]

Voutset = 4.7 4.5 4.3 4 [VDC]

Rdown (E96) ≈ 976k 549k 374k 237k [W]

Voutset = 11 10.6 10 9.6 [VDC]

Rdown (E96) ≈ 768k 523k 348k 274k [W]

Voutset = 14 13 12.5 12 [VDC]

Rdown (E96) ≈ 1M 453k 348k 280k [W]

Voutset = 23 22 20 19.2 [VDC]

Rdown (E96) ≈ 1M65 787k 357k 287k [W]

Voutset = 1.82 1.88 1.90 1.98 [VDC]

Rup (E96) ≈ 3M01 750k 604k 332k [W]

Voutset = 3.4 3.5 3.6 3.63 [VDC]

Rup (E96) ≈ 604k 301k 200k 182k [W]

Voutset = 5.1 5.2 5.3 5.5 [VDC]

Rup (E96) ≈ 604k 301k 200k 121k [W]

Voutset = 12.4 12.6 13 13.2 [VDC]

Rup (E96) ≈ 150k 100k 59k 49k9 [W]

Voutset = 15.5 16 16.3 16.5 [VDC]

Rup (E96) ≈ 121k 59k 45k3 39k2 [W]

Voutset = 25 25.5 26 26.4 [VDC]

Rup (E96) ≈ 59k 39k2 29k4 24k3 [W]

Voutset = 5V

Voutset = 15V

Voutset = 3.3V

Voutset = 12V

Voutset = 24V

RHI RLO Vref

60k5W75kW0.807VDC

Voutnom = nominal output voltage [VDC]

Voutset = trimmed output voltage [VDC]

Vref = reference voltage [VDC]

Rup = trim up resistor [kW]

Rdown = trim down resistor [kW]

RHI, RLO = internal resistors [kW]

Calculation:

The RPX-1.5 offers the feature of trimming the output voltage by using external trim resistors. The values for trim resistors are shown in trim

tables below according to E96 values; therefore, the speciﬁed voltage may slightly vary. Refer to “Selection Guide” for applicable Vout range.

Trim up

Voutset=5.1VDC Voutset=4VDC

Rup

+Vout

Trim

Rdown

GND

Trim

Trim down

Rup

+Vout

Trim

Rdown

GND

Trim

(R22) (R21)

Practical Example RPX-1.5, trim up: Practical Example RPX-1.5, trim down:

Rup =60k5W - 1k =605kW

5.1 - 5

Rup according to E96 ≈ 604kWRdown according to E96 ≈ 237kW

Rdown =(4 - 0.807) x 75kW = 239kW

5 - 4

Rdown =(Voutset - Vref) x RLO

Voutnom - Vset

Rup =RHI - 1k

Voutset - Vnom

www.recom-power.com REV.: 0/2020 P-5

Evaluation Module

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

RPX-1.5-EVM-1

Layout

DIMENSION AND PHYSICAL CHARACTERISTICS

Parameter Type Value

Dimension (LxWxH) 85.0 x 55.0 x 6.5mm

Weight 21.2g typ.

Notes:

Note3: Visit www.recom-power.com/eval-ref-boards to download the Gerber ﬁles

Top Layer

Layer 3

Layer 2

Bottom Layer

continued on next page

BOM

Comp. Description Manufacturer Part Number Manufacturer Remarks

C1 10nF 50V X7R 0603 CL10B103KB8NNNC Samsung Electro-Mechanics

C2 1µF 50V X7R 0805 CL21B105KBFNNNE Samsung Electro-Mechanics

C3 10µF 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics not mounted

C4 10µF 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics not mounted

C5 10µF 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics

C6 10µF 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics

C7 10µF 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics

www.recom-power.com REV.: 0/2020 P-6

Evaluation Module

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

RPX-1.5-EVM-1

Comp. Description Manufacturer Part Number Manufacturer Remarks

C8 10µF 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics

C9 10µF 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics

C10 10µF 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics

C11 10µF 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics

C12 33pF 50V C0G 0603 CL10C330JB8NNNC Samsung Electro-Mechanics

L1 FERRITE BEAD BLM18PG330SN1D BLM18PG330SN1D Murata

L2 FERRITE BEAD 1008 not mounted

IND-3.9uH-1.32A-045x032x026

RLS-397 RECOM

L4 FERRITE BEAD 0805 not mounted

L5 FERRITE BEAD 1206 not mounted

L6 FERRITE BEAD 2220 not mounted

L7 FERRITE BEAD 600 OHM 0805 1LN 742792040 Wurth

L8 FERRITE BEAD 1206 not mounted

L9 FERRITE BEAD 2220 not mounted

P1 CONNECTOR XW4K-04A1-H1 Omron Electronics Inc not mounted

P2 CONNECTOR XW4K-04A1-H1 Omron Electronics Inc not mounted

P3 CONNECTOR 2060-452/998-404 Wago

P4 CONNECTOR 2060-452/998-404 Wago

R1 100kW 0.1W 1% 0603 RC0603FR-07100KL Yageo

R2 0R 0.1W 0603 RC0603JR-070RL Yageo

R3 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted

R4 100kW 0.1W 1% 0603 RC0603FR-07100KL Yageo

R5 75kW 0.1W 1% 0603 RC0603FR-0775KL Yageo

R6 60k4W 0.1W 1% 0603 RC0603FR-0760K4L Yageo

R7 24k3W 0.1W 1% 0603 RC0603FR-0724K3L Yageo

R8 14k3W 0.1W 1% 0603 RC0603FR-0714K3L Yageo

R9 5k36W 0.1W 1% 0603 RC0603FR-075K36L Yageo

R10 4k22W 0.1W 1% 0603 RC0603FR-074K22L Yageo

R11 2k61W 0.1W 1% 0603 RC0603FR-072K61L Yageo

R12 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted

R13 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted

R14 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted

R15 0R 0.1W 0603 RC0603JR-070RL Yageo

R16 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted

R17 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted

R18 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted

R19 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted

R20 1kW 0.1W 1% 0603 RC0603FR-071KL Yageo

R21 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted

R22 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted

U1 RPX-1.5 MODULE RPX-1.5 RECOM

www.recom-power.com REV.: 0/2020 P-7

Evaluation Module

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

RPX-1.5-EVM-1

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.

• RPX-1.5-EVM-1 Evaluation Module

• Terms and Conditions

Contents

PACKAGING INFORMATION

Parameter Type Value

Packaging Dimension (LxWxH) 114.0 x 60.0 x 28.0mm

Packaging Quantity 1pc