MPS EV28163-Q-00A Manual de usuario

EV28163-Q-00A

High Efficiency Single Inductor

Buck-Boost DC-DC Converter

Evaluation Board

EV28163-Q-00A Rev.1.0 www.MonolithicPower.com 1

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The Future of Analog IC Technology

DESCRIPTION

The EV28163-Q-00A Evaluation Board is

designed to demonstrate the capabilities of

MPS’ MP28163.

The MP28163 is a highly efficient, low

quiescent current Buck-Boost converter, which

operates from input voltage above, below and

equal to the output voltage. The device

provides power solution for products powered

by a one-cell Lithium-Ion or multi-cell alkaline

battery applications where the output voltage is

within battery voltage rang.

The MP28163 operates with input voltage from

2V to 5.5V to provide adjustable output voltage

(1.5V to 5V), and is available in QFN10-3x3mm

package.

ELECTRICAL SPECIFICATION

Parameter Symbol Value Units

Supply Voltage VIN 2 – 5.5 V

Output Voltage VOUT 3.3

Output Current IOUT 0 – OCP A

FEATURES

•High efficiency up to 95%.

•Load disconnect during shutdown

•Input voltage range: 2V to 5.5V

•adjustable output voltage from 1.5V to 5V

•1MHz switching frequency

•Pulse skipping mode at light load

•Typical 80uA quiescent current

•Internal loop compensation for fast

response

•Internal soft start

•OTP, hiccup SCP

•Available in small QFN10-3x3 package

APPLICATIONS

•Battery-powered products

•Portable instruments

•Tablet PCs

•POS systems

All MPS parts are lead-free and adhere to the RoHS directive. For MPS green

status, please visit MPS website under Products, Quality Assurance page.

“MPS” and “The Future of Analog IC Technology”, are Registered Trademarks

of Monolithic Power Systems, Inc.

EV28163-Q-00A EVALUATION BOARD

(L × W × H) 5.08cm × 5.08cm × 1.3cm

Board Number MPS IC Number

EV28163-Q-00A MP28163GQ

EV28163-Q-00A―HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST DC-DC CONVERTER EVB

EV28163-Q-00A Rev.1.0 www.MonolithicPower.com 2

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EVALUATION BOARD SCHEMATIC

MP28163

SW1

SW2

VIN

Vcc

VOUT

MODE/ SYNC

PG N D

AGND

3. 3 u H

10uF/6.3V

22uF

6.3V

22uF

6. 3 V

JP1

JP2

GNDGND

GND

143k

820k

GNDGND

VIN

GND

VOUT

GND

750k

68pF

EV28163-Q-00A BILL OF MATERIALS

Qty RefDes Value Description Manufacturer Manufacturer P/N Package

1 C1 NS 0805

1 C2 10uF

6.3V X7R ceramic

capacitor muRata GRM21BR60J106KE19D 0805

2 C3, C4 22uF

6.3V X5R ceramic

capacitor muRata GRM21BR60J226ME39L 0805

1 C5 68pF

50V, X7R ceramic

Capacitor muRata GRM188R71H680KL 0603

2 JP1, JP2 3 pins header DI

1 L1 3.3uH

9mOhm, 8A

inductor Wurth 744314330 SMD

1 R1 820k Film resistor, 1% YAGEO RC0603FR-07820KL 0603

1 R2 143k Film resistor, 1% YAGEO RC0603FR-07143KL 0603

1 R3 750k Film resistor, 5% YAGEO RC0603JR-07750KL 0603

1 U1 MP28163

2~5.5V, 2.6A buck-

boost converter MPS MP28163GQ QFN10-3*3

EV28163-Q-00A―HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST DC-DC CONVERTER EVB

EV28163-Q-00A Rev.1.0 www.MonolithicPower.com 3

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EVB TEST RESULTS

Performance waveforms are tested on the evaluation board.

VIN = 3.3V, VOUT = 3.3V, L = 3.3µH, COUT=2x22uF, TA= 25°C, unless otherwise noted.

EV28163-Q-00A―HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST DC-DC CONVERTER EVB

EV28163-Q-00A Rev.1.0 www.MonolithicPower.com 4

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EVB TEST RESULTS (continued)

Performance waveforms are tested on the evaluation board.

VIN = 3.3V, VOUT = 3.3V, L = 3.3µH, COUT=2x22uF, TA= 25°C, unless otherwise noted.

EV28163-Q-00A―HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST DC-DC CONVERTER EVB

EV28163-Q-00A Rev.1.0 www.MonolithicPower.com 5

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EVB TEST RESULTS (continued)

Performance waveforms are tested on the evaluation board.

VIN = 3.3V, VOUT = 3.3V, L = 3.3µH, COUT=2x22uF, TA= 25°C, unless otherwise noted.

EV28163-Q-00A―HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST DC-DC CONVERTER EVB

EV28163-Q-00A Rev.1.0 www.MonolithicPower.com 6

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EVB TEST RESULTS (continued)

Performance waveforms are tested on the evaluation board.

VIN = 3.3V, VOUT = 3.3V, L = 3.3µH, COUT=2x22uF, TA= 25°C, unless otherwise noted.

SCP Entry

=2.4V, I

OUT

=0.5A, MODE=HIGH

SCP Recovery

=2.4V, I

OUT

=0.5A, MODE=HIGH

OUT

2V/div.

VSW1

2V/div.

VSW2

2V/div.

1A/div.

VOUT

2V/div.

VSW1

2V/div.

VSW2

2V/div.

1A/div.

ILOAD

200mA/div.

VOUT/AC

100mV/div.

ILOAD

500mA/div.

VOUT/AC

100mV/div.

ILOAD

500mA/div.

VOUT/AC

100mV/div.

SCP Entry

=4.2V, I

OUT

=0.5A, MODE=HIGH

SCP Recovery

=4.2V, I

OUT

=0.5A, MODE=HIGH

OUT

2V/div.

VSW1

5V/div.

VSW2

2V/div.

1A/div.

VOUT

2V/div.

VSW1

5V/div.

VSW2

2V/div.

1A/div.

EV28163-Q-00A―HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST DC-DC CONVERTER EVB

EV28163-Q-00A Rev.1.0 www.MonolithicPower.com 7

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PRINTED CIRCUIT BOARD LAYOUT

Figure 1: Top Silkscreen Layer Figure 2: Top Layer

Figure 3: Bottom Silkscreen Layer

EV28163-Q-00A―HIGH EFFICIENCY SINGLE INDUCTOR BUCK-BOOST DC-DC CONVERTER EVB

NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.

Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS

products into any application. MPS will not assume any legal responsibility for any said applications.

EV28163-Q-00A Rev.1.0 www.MonolithicPower.com 8

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QUICK START GUIDE

1. Preset the load to some value, e.g. 0.5A, notice that the MP28163 may enter SCP hiccup if starting

up with a heavier load due to the secondary current limit which is for inrush protection..

2. Connect the positive and negative terminals of the load to the VOUT and GND pins, respectively.

3. Preset the power supply output voltage (2~5.5V), and then turn off the power supply.

4. Connect the positive and negative terminals of the power supply output to the VIN and GND pins,

respectively.

5. Turn on the power supply. The MP28163 demo board will automatically start up.

6. To use the Enable function, remove the jumper JP1, apply a digital input to the EN pin. Drive EN

higher than 1.2V to turn on the regulator or less than 0.4V to turn it off.

7. To use MODE pin for PSM operation, please turn off Vin then connect the jumper JP2 to GND.

8. If other output voltage is preferred, The output voltage VOUT can be programmed by changing R1

and R2 according to below equation:

OUT FB

R2 R1 VV

=×

−

, where FB

V. Is typically 0.496V, and R1, R2’s units are in kΩ, VOUT ‘s unit is in V. The value of R2 is

recommended to be from 100 kΩthrough 180 kΩ. The recommended output voltage can be from

1.5V through 5V.

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