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Summary of Contents for Microchip Technology MCP1633 SEPIC
- Page 1 MCP1633 SEPIC LED Driver Demonstration Board User’s Guide 2020 Microchip Technology Inc. DS50002945A...
- Page 2 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.
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Page 3: Table Of Contents
C.2 Gate Drive (TP5) ..................27 C.3 Switch Node (TP4) ..................27 C.4 Output Current when Dimming is Active ............28 C.5 Output Current and Voltage Ripple .............. 28 Worldwide Sales and Service ..................30 2020 Microchip Technology Inc. DS50002945A-page 3... - Page 4 MCP1633 SEPIC LED Driver Demonstration Board User’s Guide NOTES: 2020 Microchip Technology Inc. DS50002945A-page 4...
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Page 5: Preface
Customer Support • Document Revision History DOCUMENT LAYOUT This document describes how to use the MCP1633 SEPIC LED Driver Demonstration Board as a development tool to emulate and debug firmware on a target board. The manual layout is as follows: •... - Page 6 MCP1633 SEPIC LED Driver Demonstration Board User’s Guide CONVENTIONS USED IN THIS GUIDE This manual uses the following documentation conventions: DOCUMENTATION CONVENTIONS Description Represents Examples Arial font: ® Italic characters Referenced books MPLAB IDE User’s Guide Emphasized text ...is the only compiler...
- Page 7 Preface RECOMMENDED READING This user’s guide describes how to use the MCP1633 SEPIC LED Driver Demonstration Board. Another useful document is listed below. The following Microchip document is available and recommended as a supplemental reference resource: MCP1633 Data Sheet – “Low-Side PWM Controller with LED Dimming Capability”...
- Page 8 MCP1633 SEPIC LED Driver Demonstration Board User’s Guide NOTES: 2020 Microchip Technology Inc. DS50002945A-page 8...
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Page 9: Chapter 1. Product Overview
INTRODUCTION The MCP1633 SEPIC LED Driver Demonstration Board is a step-up/step-down, Switch mode, DC/DC converter used for LED driver applications. The MCP1633 SEPIC LED Driver Demonstration Board provides a 200 mA constant-current source. Other output current options can be obtained with minimum modifications to the board’s Bill of Materials. -
Page 10: Technical Specifications
MCP1633 SEPIC LED Driver Demonstration Board User’s Guide TECHNICAL SPECIFICATIONS • Input voltage: +7V to +18V (surge voltage 42V for a maximum 180 ms, 30-second repetition rate) • Undervoltage lockout circuit, software configurable (7V and 18V default thresholds) • Overvoltage lockout circuit, hardware configurable (16V default thresholds) •... -
Page 11: Functional Description
50 A 4 k VREF WHAT DOES THE MCP1633 DEMONSTRATION BOARD KIT INCLUDE? The MCP1633 Demonstration Board kit includes: • MCP1633 SEPIC LED Driver Demonstration Board (ADM01002) • Important Information Sheet 2020 Microchip Technology Inc. DS50002945A-page 11... - Page 12 MCP1633 SEPIC LED Driver Demonstration Board User’s Guide NOTES: 2020 Microchip Technology Inc. DS50002945A-page 12...
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Page 13: Chapter 2. Installation And Operation
USER’S GUIDE Chapter 2. Installation and Operation GETTING STARTED The MCP1633 SEPIC LED Driver Demonstration Board is fully assembled and tested. The board requires the use of an external input voltage source (+7V to +18V) and the LED load (provided). - Page 14 MCP1633 SEPIC LED Driver Demonstration Board User’s Guide FIGURE 2-1: Typical Test Setup. TABLE 2-1: TEST POINT DESCRIPTION Test Point Label Description Input Voltage TP2, TP9 Board GND Converter’s Positive Output Main Switch Node (drain of Q1 MOSFET) MOSFET Drive Signal (pin 11 of MCP1633) Converter’s Negative Output...
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Page 15: Evaluating The Application
Installation and Operation EVALUATING THE APPLICATION The best way to evaluate the MCP1633 SEPIC LED Driver Demonstration Board is by examining the circuit, measuring voltages and currents with a digital voltage meter, and probing the board with an oscilloscope. Additional tools are required to evaluate some of the board’s technical parameters (the temperature of power components, the ability to withstand surge voltage pulse on input, EMI). - Page 16 MCP1633 SEPIC LED Driver Demonstration Board User’s Guide Start Check Input Voltage Good No Load Condition Check Fault Wait 2s High Check DIMM Level (potentiometer) Check Set Dimming up to Set Dimming = 0% > 80° (60°-80°) Temperature < 60°...
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Page 17: Appendix A. Schematic And Layouts
MCP1633 SEPIC LED DRIVER DEMONSTRATION BOARD USER’S GUIDE Appendix A. Schematic and Layouts INTRODUCTION This appendix contains the following schematics and layouts for the MCP1633 SEPIC LED Driver Demonstration Board: • Board – Schematic • Board – Top Silk •... -
Page 18: Board - Schematic
BOARD – SCHEMATIC Shunt 2.54 mm 1x2 Shunt 2.54 mm 1x2 Shunt 2.54 mm 1x2 EN/SYNC EXT_DIMMING 1 μF 10 μF 10 μF EXT_DIMMING 4.7 μF 1 μF 1 μF DIMM 0805 1210 1210 TERMINAL 1x2 0805 0805 0805 LOCAL_DIMMING 22 μH 10 μF 100k... -
Page 19: Board - Top Silk
Schematic and Layouts BOARD – TOP SILK BOARD – TOP COPPER AND SILK 2020 Microchip Technology Inc. DS50002945A-page 19... -
Page 20: Board - Top Copper
MCP1633 SEPIC LED Driver Demonstration Board User’s Guide BOARD – TOP COPPER BOARD – BOTTOM COOPER 2020 Microchip Technology Inc. DS50002945A-page 20... -
Page 21: Board - Bottom Copper And Silk
Schematic and Layouts BOARD – BOTTOM COPPER AND SILK BOARD – BOTTOM SILK 2020 Microchip Technology Inc. DS50002945A-page 21... - Page 22 MCP1633 SEPIC LED Driver Demonstration Board User’s Guide NOTES: 2020 Microchip Technology Inc. DS50002945A-page 22...
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Page 23: Appendix B. Bill Of Materials (Bom)
MCP1633 SEPIC LED DRIVER DEMONSTRATION BOARD USER’S GUIDE Appendix B. Bill of Materials (BOM) TABLE B-1: MCP1633 SEPIC LED DRIVER DEMONSTRATION BOARD – BILL OF MATERIALS (BOM) Reference Description Manufacturer Part Number C1, C6 Ceramic Capacitor, 1 µF, 50V, Samsung... - Page 24 MCP1633 SEPIC LED Driver Demonstration Board User’s Guide TABLE B-1: MCP1633 SEPIC LED DRIVER DEMONSTRATION BOARD – BILL OF MATERIALS (BOM) (CONTINUED) Reference Description Manufacturer Part Number Connector, Header, 2.54 mm, Sullins Connector PEC06SAAN Male, 1x6, Tin, 5.84 MH, Solutions Through-Hole, Vertical Inductor, 4.7 µH, 3.16A, 20%,...
- Page 25 Bill of Materials (BOM) TABLE B-1: MCP1633 SEPIC LED DRIVER DEMONSTRATION BOARD – BILL OF MATERIALS (BOM) (CONTINUED) Reference Description Manufacturer Part Number Microchip Analog PWM Controller, Microchip MCP1633-E/MG 2.2 MHz, MCP1633-E/MG, Technology Inc. 16-Lead QFN Microchip MCU, 8-Bit, 32 MHz,...
- Page 26 MCP1633 SEPIC LED Driver Demonstration Board User’s Guide NOTES: 2020 Microchip Technology Inc. DS50002945A-page 26...
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Page 27: Appendix C. Typical Performance Data, Curves And Waveforms
DEMONSTRATION BOARD USER’S GUIDE Appendix C. Typical Performance Data, Curves and Waveforms INTRODUCTION This chapter shows some of the typical performance parameters and curves of the MCP1633 SEPIC LED Driver Demonstration Board. GATE DRIVE (TP5) 1V/div 250 MHz 1 µs/div... -
Page 28: Output Current When Dimming Is Active
MCP1633 SEPIC LED Driver Demonstration Board User’s Guide OUTPUT CURRENT WHEN DIMMING IS ACTIVE 50 mA/div 1 M 20 MHz 400 µs/div OUTPUT CURRENT AND VOLTAGE RIPPLE 5 mA/div 20 MHz 50 mV/div 20 MHz 4 µs/div 2020 Microchip Technology Inc. - Page 29 Typical Performance Data, Curves and Waveforms NOTES: 2020 Microchip Technology Inc. DS50002945A-page 29...
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Page 30: Worldwide Sales And Service
New York, NY Tel: 46-31-704-60-40 Tel: 631-435-6000 Sweden - Stockholm San Jose, CA Tel: 46-8-5090-4654 Tel: 408-735-9110 UK - Wokingham Tel: 408-436-4270 Tel: 44-118-921-5800 Canada - Toronto Fax: 44-118-921-5820 Tel: 905-695-1980 Fax: 905-695-2078 2020 Microchip Technology Inc. DS50002945A-page 30 05/14/19...
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