EVB-EN5395QI Datasheet EVB-EN5395QI | P1-P3

Enpirion

Power Evaluation Board User Guide

EN5395QI PowerSoC

Enpirion EN5395QI 9A DCDC Converter

w/Integrated Inductor Evaluation Board

Introduction

Thank you for choosing Altera Enpirion power products.

• The EN5395QI features integrated inductor, power MOSFETS, Controller,

Compensation Network, and protection circuitry against system faults.

This level of integration delivers a substantial reduction in footprint and

part count over competing solutions. However, the evaluation board is not

optimized for minimum footprint; rather for engineering ease of evaluation

through programming options, clip leads, test points etc.

• The EN5395QI features 7 precision preset output voltages selectable via 3

pin VID (Voltage ID) input. The module requires only ceramic input and

output capacitors, and a small capacitor for programming soft-start

interval.

• The input capacitor is a 10V rated 2X47uF X5R MLCC. The output filter

section is populated with 5 x 22uF, 6.3V rated X5R MLC capacitors to

achieve the required ~100uF of output capacitance. The combination of 5

x 22uF caps yields very low ESR and hence low output ripple. 2X47uF

capacitor may be substituted if minimizing footprint is more important. The

Soft-start capacitor is a small 10V rated 15nF X5R MLCC.

• Jumpers are provided for ease of logical 1/0 programming of the following

signals:

o Enable

o VS0-VS2 output voltage select

Enable may also be controlled using an external switching source by

removing the jumper and applying the enable signal to the middle pin and

ground.

• The board comes with input decoupling and reverse polarity protection to

guard the device against common setup mishaps.

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Enpirion

Power Evaluation Board User Guide

EN5395QI PowerSoC

Quick Start Guide

Figure 1 shows a top view of the evaluation board.

WARNING: complete steps 1 through 4 before applying power

to the EN5395QI evaluation board.

STEP 1: Set the “ENA” jumper to the Disable Position.

STEP 2: Set the VID pins for the desired output voltage - Refer to Table-1.

CAUTION: VID pins MUST NOT be changed

while the EN5395QI is enabled. Doing so

could result in damage to the part.

STEP 3: Connect Power Supply to the input power

connectors, VIN (+) and GND (-) as indicated in Figure 1 and set the power

supply to the desired voltage

CAUTION: be mindful of the polarity. Even though the evaluation board

comes with reverse polarity protection diodes, it is rarely a good idea to

reverse the input polarity.

STEP 4: Connect the load to the output connectors VOUT (+) and GND (-), as

indicated in Figure 1.

STEP 5: Power up the board and move the ENA jumper to the enabled position.

The EN5395QI is now powered up and generating the desired output.

STEP 5A: Power Up/Down Behavior – Remove ENA jumper and connect a

pulse generator (output disabled) signal to the middle pin of ENA and Ground.

Set the pulse amplitude to go from 0 to 2.5 V. Set the pulse period to 10 msec.

and duty cycle to 50%. Hook up oscilloscope probes to ENA, SS and VOUT with

clean ground returns. Enable pulse generator output. Observe the SS capacitor

and VOUT voltage ramps as ENA goes high and again as ENA goes low.

Page 2 of 7

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Enpirion

Power Evaluation Board User Guide

EN5395QI PowerSoC

Figure 1. Evaluation Board Layout.

Output Voltage Select

The EN5395QI utilizes 3 pins to set

the output voltage to one of 7

precision preset output voltages.

The VID pins, labeled VS[0:2] can

be readily set to a logical 0/1 by

means of the jumpers provided. A

open pin would default to a logical

1 state utilizing the internal pull up.

However, tying the pin to a logical

1 by means of a jumper is always

recommended.

Table 1. Output Voltage Select Truth Table

WARNING: Voltage select pins must not be switched while part is enabled.

Doing so could result in damage to the part. Always disable part when changing

output voltage setting.

2 x 47uF 1210

OUT

5 x 22uF 1206

(+)

GND (-)

Decoupling Cap

(to decouple supply

Reverse polarity

protection diodes

GND (-)

OUT

(+)

Output

Enable

Output Voltage

Select

(C1)

Page 3 of 7

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EVB-EN5395QI

Mfr. #:

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Manufacturer:

Intel / Altera

Description:

Power Management IC Development Tools Eval Board EN5395QI 9A Sync. Buck convtr

Lifecycle:

New from this manufacturer.

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EVB-EN5395QI