Datasheet

ManualsBrandsRecom ManualsPOWEREvaluation Module for RPX-2.5 Buck Voltage Regulator

www.recom-power.com

REV.: 0/2019 P-1

• Evaluation platform for RPX-2.5 buck regulator

module

• Thermal design considerations included

• EMI Class B ﬁlter

• Easy evaluation of output voltage selection,

control and sensing functions

RPX-2.5-EVM-1

Evaluation Module

Features

Evaluation

Module

Description

The RPX-2.5-EVM-1 generates a constant output voltage selectable from 1.8V, 3.3V or 5V from a DC

input in the range of 4.5 – 28V (6V – 28V for the 5V output). It has a maximum continuous output

current of 2.5 A.

All the functions of the RPX-2.5 such as output voltage selection, control, 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.

Selection Guide

Part Input Output Output

Number Voltage Range Voltage Current

[VDC] [VDC] [A]

RPX-2.5-EVM-1 4.5 - 28 1.8, 3.3 2.5

6 - 28 5 2.5

Caution:

ESD sensitive. Always follow ESD preventative procedures when

handling the product!

Quick Start Guide

1. Connect P1 to power supply (observe correct polarity!)

2. Connect P2 to the load (no load operation is allowed)

3. The evaluation module is preset to 5Vout.

The output voltage can be selected with values of 1.8V and 3.3V, by desoldering the 0 Ohm

resistor near 5V and adding a 0 Ohm resistor to the respective places as seen in the board

silkscreen.

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 for any losses of the ﬁlter, remove the

resistor at R1, and solder a zero ohm resistor at R11.

5. CTRL/UVLO

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

UVLO is preset to around 4.1V. Fit R9/R10 to set the UVLO voltage.

Summary of content (5 pages)

PAGE 1
Features Evaluation Module • • • • Evaluation platform for RPX-2.5 buck regulator module Thermal design considerations included EMI Class B filter Easy evaluation of output voltage selection, control and sensing functions Evaluation Module RPX-2.5-EVM-1 Description The RPX-2.5-EVM-1 generates a constant output voltage selectable from 1.8V, 3.3V or 5V from a DC input in the range of 4.5 – 28V (6V – 28V for the 5V output). It has a maximum continuous output current of 2.5 A.
PAGE 2
RPX-2.5-EVM-1 Evaluation Module Specifications (measured @ Ta= 25°C, full load and after warm-up unless otherwise stated) Component Placement RPX-2.5-EVM-1 FOR EVALUATION ONLY www.recom-power.com/eval-ref-boards L1 2 VIN 4.5V to 28V GND P2 1 L4 L2 R2 C5 L3 2 L5 VOUT 2.5A max. L6 R1 5V 3.3V 1.
PAGE 3
RPX-2.5-EVM-1 Evaluation Module Specifications (measured @ Ta= 25°C, full load and after warm-up unless otherwise stated) Schematic L6 2220 L5 1206 L4 0805 L3 2220 7 6 4,5 L2 1206 DNC SW L1 0805 VIN P1 2 C1 1 CTRL C2 VOUT RPX-2.5 2 C3 9 C4 R9 GND C6 U1 VIN VOUT FB CTRL GND C7 C8 2 C9 R11 R1 3 GND GND R10 GND 1 GND 1 8 P2 SENSE C5 R2 R3 R4 R5 R6 Vout Select 5V 3.3V 1.8V GND Description U1: RPX-2.
PAGE 4
RPX-2.5-EVM-1 Evaluation Module Specifications (measured @ Ta= 25°C, full load and after warm-up unless otherwise stated) DIMENSION AND PHYSICAL CHARACTERISTICS Parameter Type Value Dimension (LxWxH) 85.0 x 55.0 x 5.9mm Weight 18.8g typ. Layout Top Layer Layer 2 Layer 3 Bottom Layer Notes: Note1: Visit www.recom-power.com/eval-ref-boards to download the Gerber files BOM Comp.
PAGE 5
RPX-2.5-EVM-1 Evaluation Module Specifications (measured @ Ta= 25°C, full load and after warm-up unless otherwise stated) Comp.