NXP Semiconductors KIT34704BEPEVBE User Manual

Freescale Semiconductor

Document Number: KT34704BUG

User’s Guide

KIT34704BEPEVBE Evaluation Board

Rev 1.0, 9/2008

Table of Contents

1 Kit Contents / Packing List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2 Important Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

4 EVB Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

5 Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

6 EVB Setup Configuration Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

7 KIT34704BEPEVBE Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

8 KITUSBI2CEVME Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

9 KIT34704BEPEVBE - Using Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

10 KITUSBI2CEVME - Using Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

11 KIT34704BEPEVBE Graphical User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

12 KIT34704EPEVBE Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

13 KITUSBI2CEVME Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

14 KIT34704BEPEVBE Bill of Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

15 KITUSBI2CEVME Bill of Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

16 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

17 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

© Freescale Semiconductor, Inc., 2008. All rights reserved.

1 Kit Contents / Packing List

• KIT34704BEPEVBE

• KITUSBI2CEVME - USB to I2C bridge board for controlling PMIC

• USB A-B Cable

• 4-pin female to female I2C communication cable

• CD34704B

Kit Contents / Packing List

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KIT34704BEPEVBE Evaluation Board, Rev 1.0

2 Important Notice

Freescale provides the enclosed product(s) under the following conditions:

This evaluation kit is intended for use of ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY. It
is provided as a sample IC pre-soldered to a printed circuit board to make it easier to access inputs, outputs, and
supply terminals. This EVB may be used with any development system or other source of I/O signals by simply
connecting it to the host MCU or computer board via off-the-shelf cables. This EVB is not a Reference Design and is
not intended to represent a final design recommendation for any particular application. Final device in an application
will be heavily dependent on proper printed circuit board layout and heat sinking design as well as attention to supply
filtering, transient suppression, and I/O signal quality.

The goods provided may not be complete in terms of required design, marketing, and or manufacturing related
protective considerations, including product safety measures typically found in the end product incorporating the
goods. Due to the open construction of the product, it is the user's responsibility to take any and all appropriate
precautions with regard to electrostatic discharge. In order to minimize risks associated with the customers
applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or
procedural hazards. For any safety concerns, contact Freescale sales and technical support services.

Should this evaluation kit not meet the specifications indicated in the kit, it may be returned within 30 days from the
date of delivery and will be replaced by a new kit.

Freescale reserves the right to make changes without further notice to any products herein. Freescale makes no
warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does
Freescale assume any liability arising out of the application or use of any product or circuit, and specifically disclaims
any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and
do vary in different applications and actual performance may vary over time. All operating parameters, including
“Typical”, must be validated for each customer application by customer’s technical experts.

Freescale does not convey any license under its patent rights nor the rights of others. Freescale products are not
designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or
other applications intended to support or sustain life, or for any other application in which the failure of the Freescale
product could create a situation where personal injury or death may occur.

Should Buyer purchase or use Freescale products for any such unintended or unauthorized application, Buyer shall
indemnify and hold Freescale and its officers, employees, subsidiaries, affiliates, and distributors harmless against
all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim
of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Freescale was negligent regarding the design or manufacture of the part.Freescale™ and the Freescale logo are
trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective
owners. © Freescale Semiconductor, Inc. 2008

Important Notice

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KIT34704BEPEVBE Evaluation Board, Rev 1.0

3 Introduction

This Evaluation Board demonstrates the capability of the MC34704B as a multi-channel
power management IC (PMIC) meant to address power management needs for various
multimedia application microprocessors. It provides 5 independent voltages through
terminal block connector for an easier out-of-the-box evaluation. A single Terminal block
connector for input power supply allows the user to supply the board with either a
external DC power supply or a Li-Ion battery to fully evaluate the performance
accordingly.

The KIT34704BEPEVBE has the ability to program the switching frequency of VG and
regulators 2 through 5 as well as the default soft start timing for all regulators during
startup by changing few external components. All other features can be programmed
via I2C communication using a standard 100mils 4-pin header to communicate with
either the USB-I2C bridge included in this package or with any other I2C communication
device preferred by the user.

Introduction

4 EVB Features

• Input voltage operation range from 2.7 to 5.5V

• 5 independent output voltages accessible through terminal blocks.

• Capable to be programmed via I2C

• On/Off push button

• Programable Switching frequency for REG2-5 by changing external components

• Programable default soft start for all regulators by changing external components

• 100mils 4-pin standard header connector for I2C communication

• Small Board Size (6.2cm x 6.2cm)

4.1 AMPD Device Description/Features

• Input voltage operation range from 2.7 to 5.5V

• 5-DC/DC switching regulators with +/-2% output voltage accuracy

• Capable of operating at up to 2.0 MHz switching frequency I2C programmability

• Output under voltage and over voltage detection for each regulator

• Over current limit detection and short circuit protection for each regulator

• Thermal limit detection for each regulator.

• Integrated Compensation for REG3 and REG8

•5μA maximum shutdown current (All regulators are off, 5.5V VIN)

• True Cut-off on all of the boost and buck-boost regulators.

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KIT34704BEPEVBE Evaluation Board, Rev 1.0

4.2 USB to I2C board Features

• Provides an LED for USB Power Status and JB8 Communication Status

• “B” type USB interface connector

• 4 pin connector for the I2C Interface (SDA, SCL, 5V and GND)

•I2C Level Shifter IC to allow communication with 5V or 3.3V devices.

• For more information please refer to KITUSBI2CEVME

EVB Features

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KIT34704BEPEVBE Evaluation Board, Rev 1.0

5 Required Equipment

Minimum required equipment:

• Power supply:
– from 2.7 to 5.5V or
– 1 cell Li/Ion/Polymer (2.7 to 4.2V) or
– 5.0V USB supply or AC wall adapter

• USB enabled Computer with Windows XP or higher.

• CD contains a Graphical User Interface (GUI) allowing control of all PMIC Features

through I2C communication.

Required Equipment

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KIT34704BEPEVBE Evaluation Board, Rev 1.0

6 EVB Setup Configuration Diagram

EVB Setup Configuration Diagram

PC GUI

(USB PORT)

USB Cable
Type A-B
(Shielded)

KITUSBI2CEVME

MC908JB8JDWE

34704B

LOAD 4

LOAD 3

LOAD 5

LOAD 8

Power Supply

(3.5V @ 5A)

LOAD 2

KIT34704BEPEBVE

I2C Communication

Figure 1. EVB Setup Configuration Diagram

KIT34704BEPEVBE Evaluation Board, Rev 1.0

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7 KIT34704BEPEVBE Schematic

KIT34704BEPEVBE Schematic

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Figure 2. KIT34704BEPEVBE Schematic

KIT34704BEPEVBE Evaluation Board, Rev 1.0

8 KITUSBI2CEVME Schematic

KITUSBI2CEVME Schematic

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Figure 3. KITUSBI2CEVME Schematic 1

KIT34704BEPEVBE Evaluation Board, Rev 1.0

KITUSBI2CEVME Schematic

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Figure 4. KITUSBI2CEVME Schematic 2

KIT34704BEPEVBE Evaluation Board, Rev 1.0

KIT34704BEPEVBE - Using Hardware

9 KIT34704BEPEVBE - Using Hardware

The KIT34704BEPEVBE operates with a single power supply from 2.7 to 5.5V and is
controlled via I2C with the help of an USB-I2C bridge. Applying Input power supply will
start up the VG regulator, set switching frequency and soft start and finally turn on
REG2, REG3 and REG4 in stand alone mode, all other features can only be controlled
via I2C.

9.1 Jumper Connections

Use a jumper on J3 to connect pins 3-4 vertically to set LION to VIN.

2

1

4

3

Figure 5. LION set to VIN

Pin 2,3 and 4 of JP2 corresponds to SDA,SCL, and GND signals respectively of the I2C
communication, connect to the USB-I2C bridge for programming.

26

25

1
2

3
4

JP2

Figure 6. KIT34704BEPEVB I2C Communication connector

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KIT34704BEPEVBE Evaluation Board, Rev 1.0

9.2 Input/Output power supply terminal blocks

A three-pin terminal block serves as input terminal for the main power between 2.7 to

5.5V to operate the KIT34704BEPEVBE, as well as providing access to the reference

voltage VDDI generated by the MC34704B to supply configuration voltages.

Regulator 2 through 8 use a two-pin terminal block to provide each GND reference and
VOx respectively. To learn how to configure the output voltage on each regulator, please
refer to the MC34704 datasheet that can be found at www.http://freescale.com

The following diagram shows each of the terminals and its respective output voltage
identificator.

REG 5

REG 4

REG 2

KIT34704BEPEVBE - Using Hardware

VDDI / VIN

REG 3

REG 8

Figure 7. KIT34704BEPEVBE Input/Output terminal blocks

VG

9.3 Starting up the KIT34704BEPEVBE

To Start working with the KIT34704BEPEVBE, provide an input voltage between 2.7 to

5.5V connecting the (+) probe to the VIN terminal and the (-) probe to the GDN terminal

on the Input power terminal block. Turn on the power supply and the LEDRST should
turn on.

At this moment the three stand alone regulators (REG2, REG3 and REG4) should be
providing pre-configured output voltage. To operate the rest of the MC34704B functions,
it is necessary to use I2C communication.

Section 11 will discuss how to interact with the KIT34704BEPEVBE using the Graphical
User Interface developed by freescale to fully operate the MC34704B.

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KIT34704BEPEVBE Evaluation Board, Rev 1.0