MIC2128
Evaluation Board
User’s Guide
2016 - 2019 Microchip Technology Inc.
DS50002533B
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
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OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
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Trademarks
The Microchip name and logo, the Microchip logo, Adaptec,
AnyRate, AVR, AVR logo, AVR Freaks, BesTime, BitCloud, chipKIT,
chipKIT logo, CryptoMemory, CryptoRF, dsPIC, FlashFlex,
flexPWR, HELDO, IGLOO, JukeBlox, KeeLoq, Kleer, LANCheck,
LinkMD, maXStylus, maXTouch, MediaLB, megaAVR, Microsemi,
Microsemi logo, MOST, MOST logo, MPLAB, OptoLyzer,
PackeTime, PIC, picoPower, PICSTART, PIC32 logo, PolarFire,
Prochip Designer, QTouch, SAM-BA, SenGenuity, SpyNIC, SST,
SST Logo, SuperFlash, Symmetricom, SyncServer, Tachyon,
TempTrackr, TimeSource, tinyAVR, UNI/O, Vectron, and XMEGA
are registered trademarks of Microchip Technology Incorporated in
the U.S.A. and other countries.
APT, ClockWorks, The Embedded Control Solutions Company,
EtherSynch, FlashTec, Hyper Speed Control, HyperLight Load,
IntelliMOS, Libero, motorBench, mTouch, Powermite 3, Precision
Edge, ProASIC, ProASIC Plus, ProASIC Plus logo, Quiet-Wire,
SmartFusion, SyncWorld, Temux, TimeCesium, TimeHub,
TimePictra, TimeProvider, Vite, WinPath, and ZL are registered
trademarks of Microchip Technology Incorporated in the U.S.A.
Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any
Capacitor, AnyIn, AnyOut, BlueSky, BodyCom, CodeGuard,
CryptoAuthentication, CryptoAutomotive, CryptoCompanion,
CryptoController, dsPICDEM, dsPICDEM.net, Dynamic Average
Matching, DAM, ECAN, EtherGREEN, In-Circuit Serial
Programming, ICSP, INICnet, Inter-Chip Connectivity, JitterBlocker,
KleerNet, KleerNet logo, memBrain, Mindi, MiWi, MPASM, MPF,
MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach,
Omniscient Code Generation, PICDEM, PICDEM.net, PICkit,
PICtail, PowerSmart, PureSilicon, QMatrix, REAL ICE, Ripple
Blocker, SAM-ICE, Serial Quad I/O, SMART-I.S., SQI,
SuperSwitcher, SuperSwitcher II, Total Endurance, TSHARC,
USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and
ZENA are trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated in
the U.S.A.
The Adaptec logo, Frequency on Demand, Silicon Storage
Technology, and Symmcom are registered trademarks of Microchip
Technology Inc. in other countries.
GestIC is a registered trademark of Microchip Technology Germany
II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in
other countries.
All other trademarks mentioned herein are property of their
respective companies.
© 2016 - 2019, Microchip Technology Incorporated, All Rights
Reserved.
For information regarding Microchip’s Quality Management Systems,
please visit www.microchip.com/quality.
DS50002533B-page 2
ISBN:
2016 - 2019 Microchip Technology Inc.
MIC2128 EVALUATION BOARD
USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 5
Introduction............................................................................................................ 5
Document Layout .................................................................................................. 5
Conventions Used in this Guide ............................................................................ 6
Recommended Reading........................................................................................ 7
The Microchip Website .......................................................................................... 7
Customer Support ................................................................................................. 7
Document Revision History ................................................................................... 7
Chapter 1. Product Overview
1.1 Introduction ..................................................................................................... 9
1.2 MIC2128 Evaluation Board Overview ............................................................ 9
1.3 MIC2128 Evaluation Board Features ........................................................... 10
1.4 What the MIC2128 Evaluation Board Kit Contains ....................................... 10
Chapter 2. Installation and Operation
2.1 System and Configuration Requirements ..................................................... 11
2.2 Board Setup ................................................................................................. 11
2.3 Circuit Description ........................................................................................ 12
2.3.1 Feedback Resistors ................................................................................... 12
2.3.2 SW Node ................................................................................................... 12
2.3.3 Current Limit .............................................................................................. 12
2.3.4 Loop Gain Measurement ........................................................................... 14
2.3.5 Setting the Switching Frequency ............................................................... 14
2.3.6 Setting the Soft-Start Time ........................................................................ 15
2.3.7 Auxiliary Bootstrap LDO (EXTVDD) .......................................................... 16
Appendix A. Schematic and Layouts
A.1 Introduction .................................................................................................. 17
A.2 Board – Schematic ....................................................................................... 18
A.3 Board – Top Silk Layer ................................................................................ 19
A.4 Board – Top Copper layer ............................................................................ 20
A.5 Board – Mid Copper Layer 1 ........................................................................ 21
A.6 Board – Mid Copper Layer 2 ........................................................................ 22
A.7 Board – Bottom Copper layer ...................................................................... 23
A.8 Board – Bottom Silk Layer ........................................................................... 24
Appendix B. Bill of Materials (BOM) ........................................................................... 25
Worldwide Sales and Service .................................................................................... 27
2016 - 2019 Microchip Technology Inc.
DS50002533B-page 3
MIC2128 Evaluation Board User’s Guide
NOTES:
DS50002533B-page 4
2016 - 2019 Microchip Technology Inc.
MIC2128 EVALUATION BOARD
USER’S GUIDE
Preface
NOTICE TO CUSTOMERS
All documentation becomes dated, and this manual is no exception. Microchip tools and
documentation are constantly evolving to meet customer needs, so some actual dialogs
and/or tool descriptions may differ from those in this document. Please refer to our website
(www.microchip.com) to obtain the latest documentation available.
Documents are identified with a “DS” number. This number is located on the bottom of each
page, in front of the page number. The numbering convention for the DS number is
“DSXXXXXXXXA”, where “XXXXXXXX” is the document number and “A” is the revision level
of the document.
For the most up-to-date information on development tools, see the MPLAB® IDE online help.
Select the Help menu, and then Topics, to open a list of available online help files.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
MIC2128 Evaluation Board. Items discussed in this chapter include:
•
•
•
•
•
•
Document Layout
Conventions Used in this Guide
Recommended Reading
The Microchip Website
Customer Support
Document Revision History
DOCUMENT LAYOUT
This document describes how to use the MIC2128 Evaluation Board as a development
tool to emulate and debug firmware on a target board. The manual layout is as follows:
• Chapter 1. “Product Overview” – Important information about the MIC2128
Evaluation Board.
• Chapter 2. “Installation and Operation” – Includes instructions on installing and
starting the MIC2128 Evaluation Board.
• Appendix A. “Schematic and Layouts” – Shows the schematic and layout
diagrams for the MIC2128 Evaluation Board.
• Appendix B. “Bill of Materials (BOM)” – Lists the parts used to build the
MIC2128 Evaluation Board.
2016 - 2019 Microchip Technology Inc.
DS50002533B-page 5
MIC2128 Evaluation Board User’s Guide
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Represents
Examples
Arial font:
MPLAB® IDE User’s Guide
Italic characters
Referenced books
Emphasized text
...is the only compiler...
Initial caps
A window
the Output window
A dialog
the Settings dialog
A menu selection
select Enable Programmer
Quotes
A field name in a window or
dialog
“Save project before build”
Underlined, italic text with
right angle bracket
A menu path
File>Save
Bold characters
A dialog button
Click OK
A tab
Click the Power tab
N‘Rnnnn
4‘b0010, 2‘hF1
A number in verilog format,
where N is the total number of
digits, R is the radix and n is a
digit.
Text in angle brackets < >
A key on the keyboard
Press ,
Sample source code
#define START
Filenames
autoexec.bat
File paths
c:\mcc18\h
Keywords
_asm, _endasm, static
Command-line options
-Opa+, -Opa-
Bit values
0, 1
Constants
0xFF, ‘A’
Italic Courier New
A variable argument
file.o, where file can be
any valid filename
Square brackets [ ]
Optional arguments
mcc18 [options] file
[options]
Curly brackets and pipe
character: { | }
Choice of mutually exclusive
arguments; an OR selection
errorlevel {0|1}
Ellipses...
Replaces repeated text
var_name [,
var_name...]
Represents code supplied by
user
void main (void)
{ ...
}
Courier New font:
Plain Courier New
DS50002533B-page 6
2016 - 2019 Microchip Technology Inc.
Preface
RECOMMENDED READING
This user’s guide describes how to use the MIC2128 Evaluation Board. Another
useful document is listed below. The following Microchip document is available and
recommended as a supplemental reference resource:
• MIC2128YML Data Sheet – “75V, Synchronous Buck Controllers Featuring
Adaptive On-Time Control” (DS20005620A)
THE MICROCHIP WEBSITE
Microchip provides online support via our website at www.microchip.com. This website
is used as a means to make files and information easily available to customers.
Accessible by using your favorite Internet browser, the website contains the following
information:
• Product Support – Data sheets and errata, application notes and sample
programs, design resources, user’s guides and hardware support documents,
latest software releases and archived software
• General Technical Support – Frequently Asked Questions (FAQs), technical
support requests, online discussion groups, Microchip consultant program
member listing
• Business of Microchip – Product selector and ordering guides, latest Microchip
press releases, listing of seminars and events, listings of Microchip sales offices,
distributors and factory representatives
CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
•
•
•
•
Distributor or Representative
Local Sales Office
Field Application Engineer (FAE)
Technical Support
Customers should contact their distributor, representative or field application engineer
(FAE) for support. Local sales offices are also available to help customers. A listing of
sales offices and locations is included in the back of this document.
Technical support is available through the website at:
http://www.microchip.com/support.
DOCUMENT REVISION HISTORY
Revision A (September 2016)
• Initial release of this document.
Revision B (July 2019)
• Updated image Section A.2 “Board – Schematic”.
2016 - 2019 Microchip Technology Inc.
DS50002533B-page 7
MIC2128 Evaluation Board User’s Guide
NOTES:
DS50002533B-page 8
2016 - 2019 Microchip Technology Inc.
MIC2128 EVALUATION BOARD
USER’S GUIDE
Chapter 1. Product Overview
1.1
INTRODUCTION
This chapter provides an overview of the MIC2128 Evaluation Board and covers the
following topics:
• MIC2128 Evaluation Board Overview
• MIC2128 Evaluation Board Features
• What the MIC2128 Evaluation Board Kit Contains
1.2
MIC2128 EVALUATION BOARD OVERVIEW
The MIC2128 Evaluation Board is a constant-frequency, synchronous buck controller
featuring a unique adaptive on-time control architecture. The MIC2128 operates over
an input supply range of 4.5V to 75V. The output voltage is adjustable down to 0.6V
with a guaranteed accuracy of ±1%. The device operates with programmable switching
frequency from 270 kHz to 800 kHz.
FIGURE 1-1:
2016 - 2019 Microchip Technology Inc.
MIC2128 Evaluation Board Overview.
DS50002533B-page 9
MIC2128 Evaluation Board User’s Guide
1.3
MIC2128 EVALUATION BOARD FEATURES
The MIC2128 Evaluation Board:
• Features soft-start (SS) time selection pin which allows the user to adjust the
output soft-start time to reduce inrush current from mains during startup
• Features an auxiliary bootstrap low-dropout (LDO) which improves the system
efficiency by supplying the internal bias power from the output of the converter. A
logic level enable (EN) signal can be used to enable or disable the controller.
• Can start up monotonically into a pre-biased output
• Features an open drain power good signal (PG) which signals when the output is
in regulation
• Operates in discontinuous conduction mode during soft start at light loads
The basic parameters of the evaluation board are:
• Input: 7V to 75V (Optimized for 48V)
• Output: 5V at 5A
• 300 kHz Switching Frequency (adjustable 270 kHz to 800 kHz)
1.4
WHAT THE MIC2128 EVALUATION BOARD KIT CONTAINS
The MIC2128 Evaluation Board includes the following items:
• MIC2128 Evaluation Board (ADM00770)
• Important Information Sheet
DS50002533B-page 10
2016 - 2019 Microchip Technology Inc.
MIC2128 EVALUATION BOARD
USER’S GUIDE
Chapter 2. Installation and Operation
2.1
SYSTEM AND CONFIGURATION REQUIREMENTS
The MIC2128 Evaluation Board requires only a single power supply with at least 10A
current capability. The MIC2128 has internal VDD LDO so no external linear regulator
is required to power the internal biasing of the IC. In the applications with VIN < +5.5V,
PVDD should be tied to VIN to by-pass the internal linear regulator. The output load can
either be a passive or an active load.
Note:
2.2
The MIC2128 Evaluation Board does not have reverse polarity protection.
Applying a negative voltage to the VVIN and GND terminals may damage
the device. The maximum VVIN of the board is rated at 75V. Exceeding 75V
on the VVIN could damage the device.
BOARD SETUP
Follow these steps prior to using the MIC2128 Evaluation Board:
1. Connect a supply to the VIN and GND terminals, paying careful attention to the
polarity and the supply range (7V < VVIN < 75V). Monitor IIN with a current meter
and input voltage at VVIN and GND terminals with voltmeter. Do not apply power
until Step 4.
2. Connect a load to the VOUT and GND terminals. The load can be either a passive
(resistive) or an active (electronic) type. A current meter may be placed between
the VOUT terminal and load to monitor the output current. Ensure the output
voltage is monitored at the VOUT terminal.
3. Enable Input. An EN connector is provided on the evaluation board for users to
easily access the enable feature. Applying an external logic signal on the EN pin
to pull it low, or using a jumper to short the EN pin to GND, will shut off the output
of the MIC2128 Evaluation Board.
4. Turn on the VVIN supply and verify that the output voltage is regulated to 5V.
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DS50002533B-page 11
MIC2128 Evaluation Board User’s Guide
2.3
CIRCUIT DESCRIPTION
This section describes the working principles and limitations that should be taken into
account when using the MIC2128 Evaluation Board.
2.3.1
Feedback Resistors
The output voltage on the MIC2128 Evaluation Board, which is preset to 5V, is
determined by the feedback divider:
EQUATION 2-1:
EQUATION 1
R10
V OUT = V REF 1 + ----------
R11
The MIC2128 output is optimized for 5V output. All other voltages other than 5V can be
set by modifying R11 value according to:
EQUATION 2-2:
EQUATION 2
R10 V REF
R11 = -------------------------------V OUT – V REF
where:
VREF
=
0.6V
Note that the output voltage should not be set to exceed 5V due to the 6.3V voltage
rating on the output capacitors.
For output voltage higher than 5V, output capacitors and EXTVDD pin bypass capacitor
(C13) of voltage rating higher than the set output voltage should be used.
2.3.2
SW Node
Test point JU3 (VSW) is placed for monitoring the switching waveform, one of the most
critical waveforms for the converter.
2.3.3
Current Limit
The MIC2128 Evaluation Board uses the low-side MOSFET RDS(ON) to sense inductor
current. In each switching cycle of the MIC2128 converter, the inductor current is
sensed by monitoring the voltage across the low-side MOSFET during the OFF period
of the switching cycle during which low-side MOSFET is ON. An internal current source
of 96 μA generates a voltage across the external current limit setting resistor RCL as
show in Figure 2-1.
The ILIM pin voltage (VILIM) is the difference of the voltage across the low-side
MOSFET and the voltage across the resistor (VCL). The sensed voltage VILIM is
compared with the power ground (PGND) after a blanking time of 150 ns.
If the absolute value of the voltage drop across the low-side MOSFET is greater than
the absolute value of the voltage across the current setting resistor (VCL), the MIC2128
triggers the current limit event. Consecutive eight current limit events trigger the Hiccup
mode. The hiccup sequence, including the soft start, reduces the stress on the switching field-effect transistors (FETs) and protects the load and supply from severe short
conditions.
DS50002533B-page 12
2016 - 2019 Microchip Technology Inc.
Installation and Operation
The short circuit current limit can be programmed by using the following formula:
EQUATION 2-3:
EQUATION 3
I CLIM + PP 0.5 R DSON + V CL
R 7 = ---------------------------------------------------------------------------------------I CL
where:
ICLIM
=
ΔPP
=
RDS(ON)
=
VCL
=
ICL
=
Desired current limit
Inductor current peak-to-peak
On resistance of low-side power MOSFET
Current-limit threshold. The maximum value is +15 mV.
Current-limit source current. The typical value is 96 μA.
The short circuit current limit is depicted in Figure 2-1:
VIN
DH
L1
SW
Control
Logic
R7
DL
+
VCL
PGND
Current
Limit
Detection
ICL
ILIM
C18
FIGURE 2-1:
MIC2128 Current-Limiting Circuit.
It is mandatory to make sure that the inductor current used to charge the output
capacitance during soft start is under the current limit, otherwise the supply will go in
Hiccup mode and may not finish the soft start successfully.
The MOSFET RDS(ON) varies 30% to 40% with temperature. Therefore, it is
recommended to add a 30% margin to ICL in the above equation to avoid false current
limiting due to increased MOSFET junction temperature rise. It is also recommended
to connect the SW pin directly to the drain of the low-side MOSFET to accurately sense
the MOSFET’s RDS(ON).
2016 - 2019 Microchip Technology Inc.
DS50002533B-page 13
MIC2128 Evaluation Board User’s Guide
2.3.4
Loop Gain Measurement
Resistor R14 is placed in series with the regulator feedback path. The control loop gain
can be measured by connecting an impedance analyzer across the resistor and
selecting the resistor value between 20Ω to 50Ω.
2.3.5
Setting the Switching Frequency
The MIC2128 Evaluation Board is an adjustable-frequency, synchronous buck
controller featuring a unique adaptive on-time control architecture. The switching
frequency can be adjusted between 270 kHz and 800 kHz by changing the resistor
divider network consisting of R2 and R3.
The following formula provides the estimated switching frequency:
EQUATION 2-4:
EQUATION 4
R3
f SW = f 0 --------------------R2 + R3
where:
f0
=
Switching Frequency when R2 is 100and R3 is open, fO is typically
800 kHz. For a more precise setting, it is recommended to use the
Switching Frequency graph from the data sheet.
The evaluation board design is optimized for a switching frequency of 300 kHz. If the
switching frequency is programmed to either lower end or higher end, the design needs
optimization. The switching frequency adjustment is depicted in Figure 2-2:
MIC2128
VVIN
16
VIN
R2
11
FREQ
14
AGND
R3
FIGURE 2-2:
DS50002533B-page 14
Switching Frequency Adjustment.
2016 - 2019 Microchip Technology Inc.
Installation and Operation
2.3.6
Setting the Soft-Start Time
The output soft-start time can be set by connecting a capacitor from SS to AGND as
shown in Figure 2-3.
MIC2128
13
COMPENSATION
FB
ISS
1.3 uA
gm
12
SS
CSS
Comparator
VREF
0.6V
FIGURE 2-3:
Setting the Soft-Start Time.
The value of the capacitor can be calculated using the following equation:
EQUATION 2-5:
EQUATION 5
I SS t SS
C 19 = -------------------V REF
where:
C19
=
Capacitor from SS pin to AGND
ISS
=
Internal soft-start current (1.3 μA typical)
tSS
=
Output soft-start time
VREF
=
Reference voltage (0.6V)
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DS50002533B-page 15
MIC2128 Evaluation Board User’s Guide
2.3.7
Auxiliary Bootstrap LDO (EXTVDD)
The MIC2128 Evaluation Board features an auxiliary bootstrap LDO which improves
the system efficiency by supplying the MIC2128 internal circuit bias power from the
converter output voltage. This LDO is enabled when the voltage on the EXTVDD pin is
above 4.6V (typical) and at the same time, the main LDO which operates from VIN, is
disabled to reduce power consumption. If the regulator output voltage is ≥5V and ≤12V,
use output voltage to power the MIC2128, which will increase system efficiency. The
JU1 jumper can be shorted to use output voltage as EXTVDD.
DS50002533B-page 16
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MIC2128 EVALUATION BOARD
USER’S GUIDE
Appendix A. Schematic and Layouts
A.1
INTRODUCTION
This appendix contains the following schematics and layouts for the MIC2128
Evaluation Board :
•
•
•
•
•
•
•
Board – Schematic
Board – Top Silk Layer
Board – Top Copper layer
Board – Mid Copper Layer 1
Board – Mid Copper Layer 2
Board – Bottom Copper layer
Board – Bottom Silk Layer
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DS50002533B-page 17
BOARD – SCHEMATIC
VDD
AGND
VIN
FB
R1
0ё
VDD
C9
0.1uF
16
VIN
R8
10Kё
1
PG
C10
4.7uF
VIN
7V to 75V
15
13
14
VDD
AGND
C20
0.1uF
FB
PG
SS
2 ILIM
R7
1.5kё
SW
3
R13
0ё
C12
0.1uF
MIC2128
11
R2
100Kё
EN
VIN
DL
10
VVIN
EN
EXTVDD
DH
5
PGND
6
DL
PVDD
R5
7
10ё
DH
DL
VDD
8
C11
4.7uF
9
EXTVDD
C13
1uF
R12
49.9
Q2
VIN
C1
100uF
PGND
JU3
L1
10uH
Q3
Q4
R15
OPEN
C14
OPEN
R9
18Kё
D2
OPEN
C15
100nF
VOUT
5V@5A
R14
0ё
R10
7.5Kё
FB
JU2
BST
C2
2.2uF
SW
R3
60Kё
SW
Q1
DH
1
4
R6
0ё
FREQ
C3
2.2uF
12
C19
10nF
C18
OPEN
C4
2.2uF
JU1
R4
0ё
VOUT
C17
OPEN
R11
1Kё
C5
330uF
C16
4.7nF
C6
47uF
C7
OPEN
C8
OPEN
C21
0.1uF
PGND
2016 - 2019 Microchip Technology Inc.
MIC2128 Evaluation Board User’s Guide
DS50002533B-page 18
A.2
Schematic and Layouts
A.3
BOARD – TOP SILK LAYER
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DS50002533B-page 19
MIC2128 Evaluation Board User’s Guide
A.4
BOARD – TOP COPPER LAYER
DS50002533B-page 20
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Schematic and Layouts
A.5
BOARD – MID COPPER LAYER 1
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DS50002533B-page 21
MIC2128 Evaluation Board User’s Guide
A.6
BOARD – MID COPPER LAYER 2
DS50002533B-page 22
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Schematic and Layouts
A.7
BOARD – BOTTOM COPPER LAYER
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DS50002533B-page 23
MIC2128 Evaluation Board User’s Guide
A.8
BOARD – BOTTOM SILK LAYER
DS50002533B-page 24
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MIC2128 EVALUATION BOARD
USER’S GUIDE
Appendix B. Bill of Materials (BOM)
TABLE B-1:
Qty.
BILL OF MATERIALS (BOM)
Reference
Description
Manufacturer
Part Number
1
C1
100 μF,100V, 20%, 330 m,
United Chemi-Con
EMVY101ARA101MKE0S
3
C2, C3, C4
2.2 μF, X7R, 100V, 10%
Murata Electronics®
GRM32ER72A225K
1
C5
330 μF,10V,17 m,
Panasonic®
1
C6
47 μF, X7R, 10V, 10%
Murata Electronics
GRM32ER71A476K
0
C7, C8
1210 mm size MLCC capacitor
DO NOT POPULATE
3
C9, C20, C21
0.1 μF, X7R, 100V, 10%
Murata Electronics
GRM188R72A104K
2
C10, C11
4.7 μF, X7R, 10V, 10%
Samsung Electro-Mechanics
America, Inc.
CL10B475KQ8NQNC
1
C12
0.1 μF, X7R, 16V, 10%
Murata Electronics
GRM188R71C104K
1
C13
1uF, X7R, 10V, 10%
Murata Electronics
GRM188R71A105K
0
C14
0603 size capacitor
DO NOT POPULATE
1
C15
100 nF, 100V, 10%, X7R
Murata Electronics
GRM188R72A104K
1
C16
4.7 nF, X7R,1 6V
Murata Electronics
GRM188R71C472KA
0
C17
0603 size MLCC capacitor
DO NOT POPULATE
0
C18
0603 size MLCC capacitor
DO NOT POPULATE
1
C19
10 nF, X7R, 6.3V,1 0%
Murata Electronics
GRM188R70J103K
1
PCB
MIC2128 Evaluation Board
Microchip Technology Inc.
02-10568
5
R1,R4,R6,R13,R14
0 , 0603 size resistor
Yageo Corporation
RC0603FR-070RL
1
R2
100K, 0603 size resistor
Yageo Corporation
RC0603FR-07100KL
1
R3
60K, 0603 size resistor
Yageo Corporation
RC0603FR-0760K4L
1
R5
10Ω, 0603 size resistor
Yageo Corporation
RC0603FR-0710RL
1
R7
1.3K, 0603 size resistor
Yageo Corporation
RC0603FR-071K3L
1
R8
10K, 0603 size resistor
Yageo Corporation
RC0603FR-0710KL
1
R9
18K, 0603 size resistor
Yageo Corporation
RC0603FR-0718KL
1
R10
7.5K, 0603 size resistor
Yageo Corporation
RC0603FR-077K5L
1
R11
1K, 0603 size resistor
Yageo Corporation
RC0603FR-071KL
R12
49.9K, 0603 size resistor
Yageo Corporation
RC0603FR-0749R9L
R15
0805 size resistor
DO NOT POPULATE
0
Note 1:
- ECG
10SVP330M
The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM used in
manufacturing uses all RoHS-compliant components.
2016 - 2019 Microchip Technology Inc.
DS50002533B-page 25
MIC2128 Evaluation Board User’s Guide
TABLE B-2:
Qty.
BILL OF MATERIALS (BOM) - MECHANICAL PARTS
Reference
Description
Manufacturer
Part Number
0
D2
100V Schottky diode, power PAK S08
(5.15 mm X 6.15 mm)
DO NOT POPULATE
2
JU1, JU3
2-pin Header (100 mil pitch)
TE Connectivity, Ltd.
5-146278-2
1
JU2
3-pin Header (100 mil pitch)
TE Connectivity, Ltd.
5-146282-3
9
PG, AGND, VDD, EN,
EXTVDD, VIN, PGND,
VOUT, PGND
Terminal double turret
(through hole, noninsulated)
Keystone
Electronics Corp.
1593-2
1
L1
10 μH inductor,
size 13.5 mm X 12.5 mm X 6.2 mm
Bourns®, Inc.
SRP1265A-100M
2
Q1, Q4
N-Channel MOSFET, power PAK S08
(5.15 mm X 6.15 mm)
DO NOT POPULATE
2
Q2, Q3
100V,40A N-Channel MOSFET, power PAK
S08 (5.15 mm X 6.15 mm)
Vishay
Intertechnology, Inc.
SIR878ADP
4
VIN, PGND, VOUT,
PGND
Noninsulated banana jack
Keystone
Electronics Corp.
575-4
2
Shunt
Shunts with closed top,
(100 mil pitch)
Sullins Connector
Solutions
SPC02SYAN
Note 1:
The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM used in
manufacturing uses all RoHS-compliant components.
DS50002533B-page 26
2016 - 2019 Microchip Technology Inc.
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DS50002533B-page 27
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2016 - 2019 Microchip Technology Inc.
05/14/19
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