Microchip Technology MCP1633 SEPIC User Manual Download Page 28

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MCP1633 SEPIC LED Driver Demonstration Board User’s Guide

DS50002945A-page 28



2020 Microchip Technology Inc.

C.4

OUTPUT CURRENT WHEN DIMMING IS ACTIVE

C.5

OUTPUT CURRENT AND VOLTAGE RIPPLE

50 mA/div
1 M



20 MHz

OUT

400 µs/div

4 µs/div

OUT

50 mV/div
20 MHz

5 mA/div
20 MHz

Summary of Contents for MCP1633 SEPIC

Page 1: ...2020 Microchip Technology Inc DS50002945A MCP1633 SEPIC LED Driver Demonstration Board User s Guide...

Page 2: ...may have a right to sue for relief under that Act Trademarks The Microchip name and logo the Microchip logo Adaptec AnyRate AVR AVR logo AVR Freaks BesTime BitCloud chipKIT chipKIT logo CryptoMemory...

Page 3: ...Tools 13 2 1 2 Setup Procedure 13 2 1 3 Board Testing 13 2 2 Evaluating the Application 15 2 3 Firmware Description 15 Appendix A Schematic and Layouts 17 A 1 Introduction 17 A 2 Board Schematic 18 A...

Page 4: ...MCP1633 SEPIC LED Driver Demonstration Board User s Guide DS50002945A page 4 2020 Microchip Technology Inc NOTES...

Page 5: ...he schematic and layout diagrams for the MCP1633 SEPIC LED Driver Demonstration Board Appendix B Bill of Materials BOM Lists the parts used to build the MCP1633 SEPIC LED Driver Demonstration Board Ap...

Page 6: ...e Save Bold characters A dialog button Click OK A tab Click the Power tab N Rnnnn A number in verilog format where N is the total number of digits R is the radix and n is a digit 4 b0010 2 hF1 Text in...

Page 7: ...ochip Product selector and ordering guides latest Microchip press releases listing of seminars and events listings of Microchip sales offices distributors and factory representatives PRODUCT CHANGE NO...

Page 8: ...MCP1633 SEPIC LED Driver Demonstration Board User s Guide DS50002945A page 8 2020 Microchip Technology Inc NOTES...

Page 9: ...uck mode step down or Boost mode step up Sustains voltage stresses typically found in automotive products 42V in for 180 ms High efficiency over entire operating input and output voltage ranges 85 typ...

Page 10: ...lt thresholds Load disconnect protection Typical output current 200 mA with hardware adjustments Maximum output current 1500 mA Fully protected against short circuit and no load conditions Figure 1 1...

Page 11: ...ge at the output necessary for LED driver applications The average current in the L1B inductor which is also the output current of the converter is sensed using a 0 1 shunt resistor RS As the voltage...

Page 12: ...MCP1633 SEPIC LED Driver Demonstration Board User s Guide DS50002945A page 12 2020 Microchip Technology Inc NOTES...

Page 13: ...connector J the positive and negative connector pins are marked on the board s silkscreen 2 Attach the jumper to the load connector in order to connect the LED from the bottom side 3 Connect the jumpe...

Page 14: ...Setup TABLE 2 1 TEST POINT DESCRIPTION Test Point Label Description TP1 VIN Input Voltage TP2 TP9 GND Board GND TP3 VOUT Converter s Positive Output TP4 SW Main Switch Node drain of Q1 MOSFET TP5 DR...

Page 15: ...d to the CCP1CON 5 4 bits Up to 10 bit resolution is available The CCPR1L contains the eight MSbs Most Significant bits and the CCP1CON 5 4 bits contains the two LSbs Least Significant bits This 10 bi...

Page 16: ...45A page 16 2020 Microchip Technology Inc FIGURE 2 2 State Machine Description Start Check Input Voltage Good Check Fault High Check DIMM Level potentiometer Check Temperature 60 80 Set Dimming up to...

Page 17: ...7 Appendix A Schematic and Layouts A 1 INTRODUCTION This appendix contains the following schematics and layouts for the MCP1633 SEPIC LED Driver Demonstration Board Board Schematic Board Top Silk Boar...

Page 18: ...3 5V GND in_temp 100 pF C18 GND SDRV SDRV ISN ISN ISN ISN OVP OVP in_temp dimming_duty_cycle dimming_duty_cycle CLK DAT CLK DAT CLK LOCAL_DIMMING LD1 LD2 LD3 LD4 LD5 TP5 TP4 TP8 1 F 50V 0805 C1 1 F 50...

Page 19: ...Schematic and Layouts 2020 Microchip Technology Inc DS50002945A page 19 A 3 BOARD TOP SILK A 4 BOARD TOP COPPER AND SILK...

Page 20: ...MCP1633 SEPIC LED Driver Demonstration Board User s Guide DS50002945A page 20 2020 Microchip Technology Inc A 5 BOARD TOP COPPER A 6 BOARD BOTTOM COOPER...

Page 21: ...Schematic and Layouts 2020 Microchip Technology Inc DS50002945A page 21 A 7 BOARD BOTTOM COPPER AND SILK A 8 BOARD BOTTOM SILK...

Page 22: ...MCP1633 SEPIC LED Driver Demonstration Board User s Guide DS50002945A page 22 2020 Microchip Technology Inc NOTES...

Page 23: ...5 NP0 Surface Mount 0603 Cal Chip Electronics Inc GMC10CG101J50NTLF 1 C19 Aluminum Capacitor 33 F 20 50V Surface Mount D8 Nichicon Corporation UWT1H330MCL1GS 5 C2 C3 C7 C8 C9 Ceramic Capacitor 10 F 5...

Page 24: ...poration RC0603FR 07220RL 1 R19 Resistor Thick Film 10R 1 1 10W Surface Mount 0603 Panasonic ECG ERJ3EKF10R0V 1 R24 Resistor Thick Film 24 k 1 1 10W Surface Mount 0603 Panasonic ECG ERJ 3EKF2402V 1 R2...

Page 25: ...Description Manufacturer Part Number 1 LABEL1 Label Assembly w Rev Level Small Modules per MTS 0002 4 PAD1 PAD2 PAD3 PAD4 Mechanical Headers and Wires Rubber Pad Cylindrical D7 9 H5 3 Black 3M 7000643...

Page 26: ...MCP1633 SEPIC LED Driver Demonstration Board User s Guide DS50002945A page 26 2020 Microchip Technology Inc NOTES...

Page 27: ...page 27 Appendix C Typical Performance Data Curves and Waveforms C 1 INTRODUCTION This chapter shows some of the typical performance parameters and curves of the MCP1633 SEPIC LED Driver Demonstration...

Page 28: ...n Board User s Guide DS50002945A page 28 2020 Microchip Technology Inc C 4 OUTPUT CURRENT WHEN DIMMING IS ACTIVE C 5 OUTPUT CURRENT AND VOLTAGE RIPPLE 50 mA div 1 M 20 MHz IOUT 400 s div 4 s div IOUT...

Page 29: ...Typical Performance Data Curves and Waveforms 2020 Microchip Technology Inc DS50002945A page 29 NOTES...

Page 30: ...00 China Xian Tel 86 29 8833 7252 China Xiamen Tel 86 592 2388138 China Zhuhai Tel 86 756 3210040 ASIA PACIFIC India Bangalore Tel 91 80 3090 4444 India New Delhi Tel 91 11 4160 8631 India Pune Tel 91...

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