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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. Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries.
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Object of Declaration: HV9805 230V SEPIC Evaluation Board 2015 Microchip Technology Inc. DS50002362A-page 3 Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from...
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NOTES: 2015 Microchip Technology Inc. DS50002362A-page 4 Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from...
• Recommended Reading • The Microchip Web Site • Customer Support • Revision History DOCUMENT LAYOUT This document describes how to use the HV9805 230V SEPIC Evaluation Board. The document is organized as follows: • – Includes general information about the Chapter 1.
SEPIC Evaluation Board. Other useful documents are listed below. The following Microchip document is avail- able and recommended as a supplemental reference resource. • HV9805 Data Sheet – “Off-Line LED Driver with True DC Output Current” (DS20005374). THE MICROCHIP WEB SITE Microchip provides online support via our web site at www.microchip.com.
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Preface NOTES: 2015 Microchip Technology Inc. DS50002362A-page 10 Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from...
The single-ended primary-inductor converter (SEPIC) configuration extends the appli- cation range of the HV9805 driver Integrated Circuit (IC) to lower LED load voltages than otherwise possible with the boost configuration. Many features of the boost con- figuration are retained, such as a true direct current drive of the LED load, high input power factor, high efficiency and simple magnetics.
HV9805 DEVICE SUMMARY The evaluation board features the HV9805 LED driver IC. The HV9805 device is described in the HV9805 Data Sheet – “Off-Line LED Driver with True DC Output Cur- rent” (DS20005374). The standard HV9805 application circuit supplies a true DC current to the LED load by using a converter for AC to DC power conversion, and a linear post regulator for con- stant current regulation of the LED load current.
• A power analyzer for measuring the AC power and the AC power factor • An oscilloscope for characterizing waveforms • A variable transformer for adjusting the AC line voltage • An isolation transformer (if an oscilloscope is attached to board circuitry) 2015 Microchip Technology Inc. DS50002362A-page 13 Arrow.com. Arrow.com.
The AC voltage can either be applied in full or be brought up gradually with a variable transformer. The external circuit for the HV9805’s BVS pin has been adapted to the SEPIC topology, offering protection against line undervoltage and against output overvoltage or an open load condition.
EVALUATION BOARD USER’S GUIDE Appendix A. Schematic and Layouts INTRODUCTION This appendix contains the following schematics and layouts for the HV9805 230V SEPIC Evaluation Board: • Board – Schematic • Board – Top Silk Screen, Paste Mask, Copper Pads • Board – Top Assembly, Copper Pads •...
RC0805FR-0733RL ppmC 1% 0805 33Ω The components listed in this Bill of Materials are representative of the PCB assembly. The Note: released BOM used in manufacturing uses all RoHS-compliant components. 2015 Microchip Technology Inc. DS50002362A-page 19 Arrow.com. Arrow.com. Arrow.com.
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Diodes Incorporated BZX84C4V7-7-F SOT23 The components listed in this Bill of Materials are representative of the PCB assembly. The Note: released BOM used in manufacturing uses all RoHS-compliant components. 2015 Microchip Technology Inc. DS50002362A-page 20 Arrow.com. Arrow.com. Arrow.com. Arrow.com.
FIGURE C-2: Total Harmonic Distortion vs. Line Voltage. 180 190 200 210 220 230 240 250 260 270 280 Line Voltage (V FIGURE C-3: Power Factor vs. Line Voltage. 2015 Microchip Technology Inc. DS50002362A-page 22 Arrow.com. Arrow.com. Arrow.com. Arrow.com.
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Performance Data NOTES: 2015 Microchip Technology Inc. DS50002362A-page 23 Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from...
The naming of test points on this board does not follow the TP1, TP2 format. Test points on the Note: board are identified by the names as given in Table D-1. 2015 Microchip Technology Inc. DS50002362A-page 24 Arrow.com. Arrow.com. Arrow.com.
77 mA Line Current 103 mA LED Current FIGURE D-1: AC Input Voltage at 190V 70 mA 103 mA FIGURE D-2: AC Input Voltage at 210V 2015 Microchip Technology Inc. DS50002362A-page 25 Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com.
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Test Points and Waveforms 64 mA 103 mA FIGURE D-3: AC Input Voltage at 230V 60 mA 103 mA FIGURE D-4: AC Input Voltage at 250V 2015 Microchip Technology Inc. DS50002362A-page 26 Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com.
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Test Points and Waveforms 56 mA 103 mA FIGURE D-5: AC Input Voltage at 270V 2015 Microchip Technology Inc. DS50002362A-page 27 Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com.
Test Points BUS, BVS and the Line Current at a Line Voltage of 230V D.2.3 DRN, CAP 480V Line Current DRN Voltage FIGURE D-7: Test Point DRN and the Line Current at a Line Voltage of 230V 2015 Microchip Technology Inc. DS50002362A-page 28 Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com.
D.2.4 DRN, REC Line Current DRN Voltage REC Voltage FIGURE D-9: Test Points DRN and REC and the Line Current at a Line Voltage of 230V 2015 Microchip Technology Inc. DS50002362A-page 29 Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com.
Test Points DRN and REC Near the Peak of the Line Voltage at a Line Voltage of 230V D.2.5 DRN, DRV DRN Voltage DRV Voltage FIGURE D-11: Test Points DRN and DRV at a Line Voltage of 230V 2015 Microchip Technology Inc. DS50002362A-page 30 Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com.
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D-11. M2, DRV Fet Off M2, Fet On DRV Fet On FIGURE D-13: Test Points DRN and DRV at Point B with Reference to Figure D-11. 2015 Microchip Technology Inc. DS50002362A-page 31 Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com.
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Test Points DRN and DRV at Point C with Reference to Figure D-11. FIGURE D-15: Test Points DRN and DRV at Point D with Reference to Figure D-11. 2015 Microchip Technology Inc. DS50002362A-page 32 Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com.
Test Points DRN and DRV at Point E with Reference to Figure D-11. D.2.6 Inductor Currents L51 Current 230V L50 Current FIGURE D-17: Inductor Currents L50 L51 Current at a Line Voltage of 230V 2015 Microchip Technology Inc. DS50002362A-page 33 Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com.
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Line Voltage of 230V L51 Current L50 Current FIGURE D-19: Inductor Currents L50 and L51 Near the 45° Point of the Line Voltage at a Line Voltage of 230V 2015 Microchip Technology Inc. DS50002362A-page 34 Arrow.com. Arrow.com. Arrow.com. Arrow.com.
BUS, REG, HVS, CRG, CRS BUS Voltage (BUS) LED Voltage (125V Line Current Headroom Voltage (REG) FIGURE D-21: Test Points BUS, REG and Line Current at a Line Voltage of 230V 2015 Microchip Technology Inc. DS50002362A-page 35 Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com.
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Test Points BUS, REG and Line Current at a Line Voltage of 230V Headroom Voltage at REG, HVS (REG) 3.125V 1.25V (HVS FIGURE D-23: Test Points REG and HVS at a Line Voltage of 230V 2015 Microchip Technology Inc. DS50002362A-page 36 Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com.
Test Points REG, CRG and CRS at a Line Voltage of 230V D.2.8 Line Current FIGURE D-25: Test Point HVR and the Line Current at a Line Voltage of 230V 2015 Microchip Technology Inc. DS50002362A-page 37 Arrow.com. Arrow.com. Arrow.com. Arrow.com.
Test Point CSH and the Line Current at a Line Voltage of 230V LED Current FIGURE D-27: Test Point CSH and the Line Current at a Line Voltage of 230V 2015 Microchip Technology Inc. DS50002362A-page 38 Arrow.com. Arrow.com. Arrow.com.
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Test Point CSH and the Line Current at a Line Voltage of 230V LED Current FIGURE D-29: Test Point CSH and the Line Current at a Line Voltage of 230V 2015 Microchip Technology Inc. DS50002362A-page 39 Arrow.com. Arrow.com. Arrow.com.
Line Current at a Line Voltage of 15V Line Current Supply Voltage FIGURE D-31: Test Point V and the Line Current at a Line Voltage of 30V 2015 Microchip Technology Inc. DS50002362A-page 40 Arrow.com. Arrow.com. Arrow.com. Arrow.com.
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Test Points and Waveforms Line Current Supply Voltage 8.2V FIGURE D-32: Test Point V and the Line Current at a Line Voltage of 230V 2015 Microchip Technology Inc. DS50002362A-page 41 Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com.
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