MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide 2013 Microchip Technology Inc. DS50002157A 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in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. 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Trademarks The Microchip name and logo, the Microchip logo, dsPIC, FlashFlex, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART, PIC32 logo, rfPIC, SST, SST Logo, SuperFlash and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, MTP, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries. Analog-for-the-Digital Age, Application Maestro, BodyCom, chipKIT, chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE, rfLAB, Select Mode, SQI, Serial Quad I/O, Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA and Z-Scale 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. GestIC and ULPP are registered trademarks 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. © 2013, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. ISBN: 978-1-62077-176-1 QUALITY MANAGEMENT SYSTEM CERTIFIED BY DNV == ISO/TS 16949 == DS50002157A-page 2 Microchip received ISO/TS-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified. 2013 Microchip Technology Inc. MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide Object of Declaration: MCP19035 600 kHz Synchronous Buck Controller Evaluation Board 2013 Microchip Technology Inc. DS50002157A-page 3 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide NOTES: 2013 Microchip Technology Inc. DS50002157A-page 4 MCP19035 600 KHZ SYNCHRONOUS BUCK CONTROLLER EVALUATION BOARD USER’S GUIDE Table of Contents Preface ........................................................................................................................... 7 Introduction............................................................................................................ 7 Document Layout .................................................................................................. 7 Conventions Used in this Guide ............................................................................ 8 Recommended Reading........................................................................................ 9 The Microchip Web Site ........................................................................................ 9 Customer Support ................................................................................................. 9 Document Revision History ................................................................................... 9 Chapter 1. Product Overview 1.1 Introduction ................................................................................................... 11 1.2 Short Overview: MCP19035 ......................................................................... 11 1.3 What is the MCP19035 600 kHz Synchronous Buck Controller Evaluation Board? .................................................................................. 12 1.4 What the MCP19035 600 kHz Synchronous Buck Controller Evaluation Board Kit Contains ................................................................ 12 Chapter 2. Installation and Operation 2.1 Introduction ................................................................................................... 13 2.1.1 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board Features .................................................................... 13 2.2 Getting Started ............................................................................................. 13 2.2.1 Necessary Instruments and Tools ............................................................. 13 2.2.2 Setup Procedure ....................................................................................... 13 2.2.3 Board Testing ............................................................................................ 14 Appendix A. Schematic and Layouts A.1 Introduction .................................................................................................. 17 A.2 Board – Schematic ....................................................................................... 18 A.3 Board – Top Silk .......................................................................................... 19 A.4 Board – Top Copper and Silk ....................................................................... 20 A.5 Board – Top Copper .................................................................................... 21 A.6 Board – Mid Layer 1 ..................................................................................... 22 A.7 Board – Mid Layer 2 ..................................................................................... 23 A.8 Board – Bottom Copper ............................................................................... 24 A.9 Board – Bottom Copper and Silk ................................................................. 25 2013 Microchip Technology Inc. DS50002157A-page 5 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide Appendix B. Bill of Materials Appendix C. Typical Performance Data, Curves and Waveforms C.1 Introduction .................................................................................................. 29 Worldwide Sales and Service .....................................................................................38 DS50002157A-page 6 2013 Microchip Technology Inc. MCP19035 600 KHZ SYNCHRONOUS BUCK CONTROLLER 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 web site (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 “DSXXXXXA”, where “XXXXX” 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 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board. Items discussed in this chapter include: • • • • • • Document Layout Conventions Used in this Guide Recommended Reading The Microchip Web Site Customer Support Document Revision History DOCUMENT LAYOUT This document describes how to use the MCP19035 600 kHz Synchronous Buck Controller 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” – Shows a brief description of the MCP19035 600 kHz Synchronous Buck Controller Evaluation Board • Chapter 2. “Installation and Operation” – Includes instructions on how to get started with the MCP19035 600 kHz Synchronous Buck Controller Evaluation Board • Appendix A. “Schematic and Layouts” – Shows the schematic and layout diagrams for the MCP19035 600 kHz Synchronous Buck Controller Evaluation Board • Appendix B. “Bill of Materials”– Lists the parts used to build the MCP19035 600 kHz Synchronous Buck Controller Evaluation Board • Appendix C. “Typical Performance Data, Curves and Waveforms” – Shows the typical performance graphs 2013 Microchip Technology Inc. DS50002157A-page 7 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide CONVENTIONS USED IN THIS GUIDE This manual uses the following documentation conventions: DOCUMENTATION CONVENTIONS Description Arial font: Italic characters Initial caps Quotes Underlined, italic text with right angle bracket Bold characters N‘Rnnnn Text in angle brackets < > Courier New font: Plain Courier New Represents Referenced books Emphasized text A window A dialog A menu selection A field name in a window or dialog A menu path MPLAB® IDE User’s Guide ...is the only compiler... the Output window the Settings dialog select Enable Programmer “Save project before build” A dialog button A tab A number in verilog format, where N is the total number of digits, R is the radix and n is a digit. A key on the keyboard Click OK Click the Power tab 4‘b0010, 2‘hF1 Italic Courier New Sample source code Filenames File paths Keywords Command-line options Bit values Constants A variable argument Square brackets [ ] Optional arguments Curly brackets and pipe character: { | } Ellipses... Choice of mutually exclusive arguments; an OR selection Replaces repeated text Represents code supplied by user DS50002157A-page 8 Examples File>Save Press <Enter>, <F1> #define START autoexec.bat c:\mcc18\h _asm, _endasm, static -Opa+, -Opa0, 1 0xFF, ‘A’ file.o, where file can be any valid filename mcc18 [options] file [options] errorlevel {0|1} var_name [, var_name...] void main (void) { ... } 2013 Microchip Technology Inc. Preface RECOMMENDED READING This user's guide describes how to use the MCP19035 600 kHz Synchronous Buck Controller Evaluation Board. Other useful documents are listed below. The following Microchip documents are available and recommended as supplemental reference resources. • MCP19035 Data Sheet – “High-Speed Synchronous Buck Controller” (DS22326) • AN1452 – “Using the MCP19035 Synchronous Buck Converter Design Tool” (DS01452) THE MICROCHIP WEB SITE Microchip provides online support via our web site at www.microchip.com. This web site is used as a means to make files and information easily available to customers. Accessible by using your favorite Internet browser, the web site 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 web site at: http://www.microchip.com/support DOCUMENT REVISION HISTORY Revision A (April 2013) • Initial Release of this Document. 2013 Microchip Technology Inc. DS50002157A-page 9 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide NOTES: DS50002157A-page 10 2013 Microchip Technology Inc. MCP19035 600 KHZ SYNCHRONOUS BUCK CONTROLLER EVALUATION BOARD USER’S GUIDE Chapter 1. Product Overview 1.1 INTRODUCTION This chapter provides an overview of the MCP19035 600 kHz Synchronous Buck Controller Evaluation Board and covers the following topics: • Short Overview: MCP19035 • What is the MCP19035 600 kHz Synchronous Buck Controller Evaluation Board? • What the MCP19035 600 kHz Synchronous Buck Controller Evaluation Board Kit Contains 1.2 SHORT OVERVIEW: MCP19035 The MCP19035 is a highly-featured, highly integrated, synchronous buck controller in a space-saving 10-pin DFN 3 x 3 mm package that operates from input voltage sources up to 30V. Integrated features include high and low-side MOSFET drivers, fixed-frequency voltage mode control, internal oscillator and reference voltage generator, overcurrent protection circuit for both sides, Power Good circuit and overtemperature protection. A minimal number of external components is necessary to develop a complete, high-performance Synchronous Buck Converter power supply. The MCP19035 Synchronous Buck Controller is intended to be used for applications requiring medium to high-output currents (up to 20A) and input voltages up to 30V. Typical applications include: • • • • Medium current Point-of-Load converters FPGA/DSP power supplies Digital Set-Top boxes Industrial 24V rails converters The internal linear voltage regulator (LDO) allows low current loads (for example, PIC® microcontrollers) to be powered directly from this controller without any additional components. 2013 Microchip Technology Inc. DS50002157A-page 11 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide + VIN CIN ON MCP19035 SHDN OFF BOOT CBOOT Q1 HDRV VIN L PHASE PWRGD C2 COMP LDRV FB +VCC Q2 COUT GND C3 +VOUT CVCC R4 R1 C1 R3 R2 FIGURE 1-1: 1.3 MCP19035 - Typical Application. WHAT IS THE MCP19035 600 KHZ SYNCHRONOUS BUCK CONTROLLER EVALUATION BOARD? The MCP19035 600 kHz Synchronous Buck Controller Evaluation Board is a compact, highly efficient, step-down voltage regulator that will convert the input voltage rail (typically 12V) to 1.8V regulated output voltage. The maximum output current for this step-down converter is 10A. The board demonstrates the capabilities of the MCP19035 600 KHz Synchronous Buck Converter, as well as Microchip’s high-performance power MOSFET transistors. Test points for various signals are provided for measuring different parameters of the converter. The evaluation board can be modified to support output voltages ranging from 0.9V to 3.3V by changing a single resistor. 1.4 WHAT THE MCP19035 600 KHZ SYNCHRONOUS BUCK CONTROLLER EVALUATION BOARD KIT CONTAINS The MCP19035 600 kHz Synchronous Buck Controller Evaluation Board kit includes: • MCP19035 600 kHz Synchronous Buck Controller Evaluation Board (ADM00445) • Important Information Sheet DS50002157A-page 12 2013 Microchip Technology Inc. MCP19035 600 KHZ SYNCHRONOUS BUCK CONTROLLER EVALUATION BOARD USER’S GUIDE Chapter 2. Installation and Operation 2.1 INTRODUCTION 2.1.1 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board Features The MCP19035 600 kHz Synchronous Buck Controller Evaluation Board was developed to provide a compact, low-cost and highly efficient step-down conversion for low to medium output currents. The key features of this board include: • Input Voltage Range: 8V to 14V • Output Voltage: 1.8V (can be adjusted by changing one resistor between 0.9V and 3.3V) • Maximum Output Current: 10A • 88% typical efficiency at 1.8V/10A output and 12V input • 600 kHz fixed switching frequency • On-board High Performance Power MOSFET Transistors • Overcurrent Protection for High and Low-Side MOSFETs • Power Good (PGOOD) output for monitoring the output voltage quality • Shutdown input for placing the converter in low-power Standby mode • Under Voltage Lockout (UVLO) with 4.2V and 3.6V typical thresholds 2.2 GETTING STARTED The MCP19035 600 kHz Synchronous Buck Controller Evaluation Board is fully assembled and tested to evaluate and demonstrate the MCP19035 capabilities. 2.2.1 • • • • • • Necessary Instruments and Tools Adjustable DC Power Supply with 0V – 15V/5 ADC range output capability Electronic load with at least 20A current capability and load stepping capability Digital oscilloscope with a minimum bandwidth of 50 MHz Digital voltmeter/ammeter Optionally, a Network Analyzer/Bode Plot Analyzer for loop analysis Wires for connections: they must sustain high current, 5A for the connection between adjustable DC power supply and board, 15A for the connection between the board and the electronic load 2.2.2 Setup Procedure To power up the MCP19035 600 kHz Synchronous Buck Controller Evaluation Board, the following steps must be completed: 1. Connect the Electronic Load to J2 connector of the evaluation board; the positive (+) and negative (-) connector pins are marked on the board silkscreen. 2. Connect the Adjustable DC Power Supply to J1 connector of the evaluation board; the positive (+) and negative (-) connector pins are marked on the board silkscreen. 3. The DC voltage supplied by the Adjustable DC Power Supply must be 12V. 2013 Microchip Technology Inc. DS50002157A-page 13 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide 2.2.3 Board Testing The typical test setup is depicted in Figure 2-1. Table 2-1 shows all the available test points on the board. The user can connect various instruments at the listed test points to evaluate the parameters of the converter. The typical performance data, curves and waveforms are presented in Appendix C. “Typical Performance Data, Curves and Waveforms”. FIGURE 2-1: Typical Test Setup. TABLE 2-1: TEST POINTS DESCRIPTION Test Point TP1, TP8, TP12, TP15 TP7, TP16, TP19 TP2 GND Description Power GND SGND Signal GND VIN Input Voltage TP3 SHDN Shutdown input pull-up resistor TP4 SHDN Shutdown input TP5 TP6 PGOOD Power Good output EXTPGOOD External pull-up for PGOOD signal TP9 HIGHDR High-Side MOSFET drive signal TP10 LOWDR Low-Side MOSFET drive signal TP11 SW TP13 PREBIAS TP14 TP17, TP18 DS50002157A-page 14 Label VOUT CH A, CH B Main switch node Pre-bias load point Output Voltage Signal Injection points for loop measurement 2013 Microchip Technology Inc. Installation and Operation 2.2.3.1 ADJUSTING THE OUTPUT VOLTAGE The output voltage can be modified by changing the value of R12 from the feedback divider. The output voltage is set according to Equation 2-1. EQUATION 2-1: OUTPUT VOLTAGE R12 + R11 VOUT = V REF --------------------------R12 Where: VREF = 0.6V R11 = 20 k Do not modify the value of the R11 resistor (20 kΩ), as this will affect the system’s loop compensation. Some parameters, including efficiency, overcurrent protection thresholds and input and output voltage ripple, can be affected by the modification of the output voltage. Table 2-2 shows the standard values of R12 resistor for some usual output voltages. TABLE 2-2: 2013 Microchip Technology Inc. OUTPUT VOLTAGE VERSUS R12 VALUE VOUT (V) R12 (k) 0.9 40.2 1 30 1.2 20 1.5 13.3 1.8 10 2 8.45 2.25 7.32 2.5 6.34 3.3 4.42 DS50002157A-page 15 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide NOTES: DS50002157A-page 16 2013 Microchip Technology Inc. MCP19035 600 KHZ SYNCHRONOUS BUCK CONTROLLER EVALUATION BOARD USER’S GUIDE Appendix A. Schematic and Layouts A.1 INTRODUCTION This appendix contains the following schematics and layouts for the MCP19035 600 kHz Synchronous Buck Controller Evaluation Board: • • • • • • • • Board – Schematic Board – Top Silk Board – Top Copper and Silk Board – Top Copper Board – Mid Layer 1 Board – Mid Layer 2 Board – Bottom Copper Board – Bottom Copper and Silk 2013 Microchip Technology Inc. DS50002157A-page 17 2013 Microchip Technology Inc. A.2 BOARD – SCHEMATIC TP1 GND 1 J1 1 2 ED120/2DS TP2 TP10 TP9 LOWDR HIGHDR 1 1 TP11 SW 1 PGND TP8 GND 1 TP12 GND 1 PGND PGND 1 VIN C1 C2 10uF 10uF R1 5.1k TP3 R2 100k PGND R3 0 G 1 D Q1 D1 MCP87050 S SHDN 2 C4 R5 3 3.9nF C10 7.5k 47pF 4 5 C11 1uF R4 100 BOOT LOWDR VIN PWRGD GND VCC TP5 PGOOD PGOOD R12 10k R14 10k 1 7 DS50002157A-page 18 1 SGND D MCP87022 Q2 6 S 1 VOUT C6 C7 100uF 100uF C9 1uF J2 2 1 ED120/2DS 11 TP15 1 PGND PGND SGND PGND R11 R10 20k 49.9 R13 C13 750 560pF TP19 GND 1 1 TP17 CH A 1 TP18 CH B SGND TP16 GND 1 SGND NET_TIE_0.5 mm 0 NT1 SGND C5 0.33uF G C12 4.7uF EXTPGOOD TP7 GND 3.3 1.5uH/17A GND PGND 1 R6 8 R9 5.1k TP6 TP14 L1 9 100k Q3 2N7002-7-F 5.1k COMP 10 SGND PGND Schematic and Layouts R8 1 PHASE FB MCP19035 R7 PGOOD TP4 HIGHDR 1 B0530WS U1 1 TP13 Schematic and Layouts A.3 BOARD – TOP SILK 2013 Microchip Technology Inc. DS50002157A-page 19 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide A.4 BOARD – TOP COPPER AND SILK DS50002157A-page 20 2013 Microchip Technology Inc. Schematic and Layouts A.5 BOARD – TOP COPPER 2013 Microchip Technology Inc. DS50002157A-page 21 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide A.6 BOARD – MID LAYER 1 DS50002157A-page 22 2013 Microchip Technology Inc. Schematic and Layouts A.7 BOARD – MID LAYER 2 2013 Microchip Technology Inc. DS50002157A-page 23 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide A.8 BOARD – BOTTOM COPPER DS50002157A-page 24 2013 Microchip Technology Inc. Schematic and Layouts A.9 BOARD – BOTTOM COPPER AND SILK 2013 Microchip Technology Inc. DS50002157A-page 25 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide NOTES: DS50002157A-page 26 2013 Microchip Technology Inc. MCP19035 600 KHZ SYNCHRONOUS BUCK CONTROLLER EVALUATION BOARD USER’S GUIDE Appendix B. Bill of Materials TABLE B-1: Qty BILL OF MATERIALS (BOM) Reference Description Manufacturer Part Number 4 BUMP Bumpon Hemisphere .44 X .20 White 3M 2 C1, C2 Cap. Cer. 10 µF 25V 10% X 7R 1210 TDK Corporation SJ-5003 (WHITE) C3225X7R1E106K 1 C4 Cap. Cer. 3900PF 50V 5% NP0 0603 TDK Corporation C1608C0G1H392J 1 C5 Cap. Cer. 0.33 µF 16V 10% X7R 0603 Murata Electronics® GRM188R71C334KA01D 2 C6, C7 Cap. Cer. 100 µF 6.3V 20% X5R 1210 TDK Corporation C3225X5R0J107M 2 C9, C11 Cap. Cer. 1 µF 35V 10% X7R 0805 TDK Corporation CGA4J3X7R1V105K 1 C10 Cap. Cer. 47pF 100V 5% COG 0603 AVX Corporation 06031A470JAT2A 1 C12 Cap. Cer. 4.7 µF 25V X5R 0805 TDK Corporation C2012X5R1E475K 1 C13 Cap. Cer. 560PF 50V 5% NP0 0603 KEMET® C0603C561J5GACTU Diode Schottky 0.5A 30V SOD323 Diodes® B0530WS-7-F 1 D1 Incorporated 2 J1, J2 Terminal Block 5.08MM Vert. 2 POS. On-Shore Technology, Inc. ED120/2DS 1 L1 Inductor Power 1.0 µH 17A SMD Wurth Elektronik Group 7443340100 PCB Printed Circuit Board - MCP19035 600 kHz — Synchronous Buck Controller Evaluation Board 104-00445 1 Q1 High Performance MOSFET Transistor Microchip Technology Inc. MCP87050-U/MF 1 Q2 High Performance MOSFET Transistor Microchip Technology Inc. MCP87022-U/MF 1 Q3 MOSFET N-Ch 60V 115MA SOT-23-3 Diodes Incorporated 2N7002-7-F 3 R1, R8, R9 Res. 5.1 kOhm 1/10W 1% 0603 SMD Panasonic® - ECG ERJ-3EKF5101V 2 R2, R7 Res. 100 kOhm 1/10W 1% 0603 SMD Panasonic - ECG ERJ-3EKF1003V 1 R3 Res. 0 Ohm 1/10W 0603 SMD Panasonic - ECG ERJ-3GEY0R00V 1 R4 Res. 100 Ohm 1/10W 1% 0603 SMD Panasonic - ECG ERJ-3EKF1000V 1 R5 Res. 7.50 kOhm 1/10W 1% 0603 SMD Panasonic - ECG ERJ-3EKF7501V 1 R6 Res. 3.3 Ohm 1/10W 1% 0603 Panasonic - ECG ERJ-3RQF3R3V 2 R12, R14 Res. 10 kOhm 1/10W 1% 0603 SMD Panasonic - ECG ERJ-3EKF1002V 1 R10 Res. 49.9 Ohm .25W 1% 0603 SMD Vishay/Dale CRCW060349R9FKEAHP 1 R11 Res. 20 kOhm 1/10W 5% 0603 SMD Panasonic - ECG ERJ-3GEYJ203V 1 R13 Res. 750 Ohm 1/10W 1% 0603 SMD Vishay/Dale CRCW0603750RFKEA 19 TP1 – TP19 Test Point PC Multi Purpose Blk Keystone Electronics Corp. 5011 1 U1 MCP19035 High Speed Synchronous Buck Microchip Controller Technology Inc. Note 1: MCP19035-BAABE/MF 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. 2013 Microchip Technology Inc. DS50002157A-page 27 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide NOTES: DS50002157A-page 28 2013 Microchip Technology Inc. MCP19035 600 KHZ SYNCHRONOUS BUCK CONTROLLER EVALUATION BOARD USER’S GUIDE Appendix C. Typical Performance Data, Curves and Waveforms C.1 INTRODUCTION This chapter shows some of the typical performance parameters and curves of the MCP19035 600 kHz Synchronous Buck Controller Evaluation Board. TABLE C-1: CONVERTER PARAMETERS Parameter Value Input Voltage Range (V) Comments 8 – 14 Output Voltage (V) 1.8 ±2.5% Tolerance Maximum Output Current (A) 10 Steady State output current Output Voltage Ripple (mV) <30 VIN = 12V, IOUT = 10A Input Voltage Ripple (mV) <300 VIN = 12V, IOUT = 10A <100 Step Load 0A to 5A Output Voltage Overshoot during Step Load (mV) Switching Frequency (kHz) 510 – 690 Typical 600 kHz 100 VIN = 8V Effficiency (%) 90 VIN = 14V 80 VIN = 12V 70 60 50 40 0 FIGURE C-1: 2013 Microchip Technology Inc. 2000 4000 6000 IOUT (mA) 8000 10000 Efficiency. DS50002157A-page 29 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide 1.785 1.784 VOUT (V) 1.783 VOUT 1.782 1.781 1.78 FIGURE C-2: FIGURE C-3: DS50002157A-page 30 0 2000 4000 6000 IOUT (mA) 8000 10000 Load Regulation (VIN = 12V). Output Voltage Ripple/Noise (VIN = 12V, IOUT = 10A, BW = 20 MHz). 2013 Microchip Technology Inc. Typical Performance Data, Curves and Waveforms FIGURE C-4: Input Voltage Ripple/Noise (VIN = 12V, IOUT = 10A, BW = 20 MHz). FIGURE C-5: BW = 300 MHz). SW (TP11), LDRV (TP10) and HDRV (TP9) Signals (VIN = 12V, IOUT = 10A, 2013 Microchip Technology Inc. DS50002157A-page 31 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide FIGURE C-6: LDRV (TP10) and HDRV (TP9) Signals (VIN = 12V, IOUT = 10A, BW = 300 MHz). FIGURE C-7: Dead Times 1 (VIN = 12V, IOUT = 10A, BW = 300 MHz). DS50002157A-page 32 2013 Microchip Technology Inc. Typical Performance Data, Curves and Waveforms FIGURE C-8: Dead Times 2 (VIN = 12V, IOUT = 10A, BW = 300 MHz). FIGURE C-9: The Body Diode Conduction Time (VIN = 12V, IOUT = 10A, BW = 300 MHz). 2013 Microchip Technology Inc. DS50002157A-page 33 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide FIGURE C-10: Step Load 1 (VIN = 12V). FIGURE C-11: Step Load 2 (VIN = 12V). DS50002157A-page 34 2013 Microchip Technology Inc. Typical Performance Data, Curves and Waveforms FIGURE C-12: Step Load 3 (VIN = 12V). FIGURE C-13: Power Good Signal (PGOOD). 2013 Microchip Technology Inc. DS50002157A-page 35 MCP19035 600 kHz Synchronous Buck Controller Evaluation Board User’s Guide FIGURE C-14: DS50002157A-page 36 Soft Start. 2013 Microchip Technology Inc. Typical Performance Data, Curves and Waveforms NOTES: 2013 Microchip Technology Inc. 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