Texas Instruments UCC28810EVM-002 User Manual Download | Manualshive

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Using the UCC28810EVM-002

User's Guide

Literature Number: SLUU355A

March 2009 – Revised June 2009

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Summary of Contents for UCC28810EVM-002

Page 1: ...Using the UCC28810EVM 002 User s Guide Literature Number SLUU355A March 2009 Revised June 2009...

Page 2: ...voltage The second configuration requires removing some components and changing a resistor value see below for more details This second configuration removes the tracking element of the PFC circuit T...

Page 3: ...CHARACTERSTICS PFC Stage VOUT PFC output voltage 235 415 VDC LED Driver Stage POUT Output power 45 80 100 W IOUT Output current 0 84 0 9 0 96 A Line regulation 0 03 Frequency 60 128 kHz SYSTEMS CHARA...

Page 4: ...Schematic www ti com Figure 1 UCC28810EVM 002 PFC Stage Schematic 4 A 0 9 A Constant Current Supply with PFC for 100 W LED Lighting Applications SLUU355A March 2009 Revised June 2009 Submit Documentat...

Page 5: ...GND GDRV VDD www ti com Schematic Figure 2 UCC28810EVM 002 Buck Stage Schematic SLUU355A March 2009 Revised June 2009 A 0 9 A Constant Current Supply with PFC for 100 W LED Lighting Applications 5 Su...

Page 6: ...at 0 9 A The HB LED s should be connected in series Their voltage drop should be between 55 VDC and 110 VDC Alternatively a constant voltage electronic load could be used If using a constant voltage...

Page 7: ...D s Table 2 Test Point Functions TEST POINTS NAME DESCRIPTION TP1 Loop injection point TP2 Loop injection point PFC output TP3 VCC_BK Buck bias voltage output TP4 PFC PFC output voltage TP5 PFC PFC ou...

Page 8: ...acitor is not required on the output if using a HB LED string 5 Set AC source to 90 VRMS 6 Turn on AC source 7 Monitor PFC output voltage at TP4 and TP5 V2 8 Monitor output current at A1 9 Monitor out...

Page 9: ...rator a pulse from 0 V to 3 3 V at 200 Hz with variable duty cycle Note when the PWM signal is high the LED light is reduced 100 duty cycle will turn LED off 5 Apply power to the EVM per Section 6 1 6...

Page 10: ...oltage 0 5 A div Ch3 LED Current Ch1 Buck VIN TRANSITION MODE BUCK PWM RESPONSE Ch1 and Ch 4 share GND reference Ch2 Buck VDS Ch4 LED Voltage 0 5 A div Ch3 LED Current Ch1 Buck VIN TRANSITION MODE BUC...

Page 11: ...MODE BUCK PWM AND LINE INPUT CURRENT Ch1 and Ch4 share GND reference www ti com Performance Data and Typical Characteristic Curves Figure 8 SLUU355A March 2009 Revised June 2009 A 0 9 A Constant Curr...

Page 12: ...002 printed circuit board Figure 9 UCC28810EVM 002 Top Layer Assembly Drawing top view Figure 10 UCC28810EVM 002 Top Copper top view Figure 11 UCC28810EVM 002 Bottom Layer viewed through top layer A...

Page 13: ...F 25 V X7R 10 1210 Std Std 2 C19 C22 Capacitor ceramic 10 nF 50 V X7R 10 0805 Std Std 1 C24 Capacitor ceramic 100 pF 200 V NPO 5 0805 Std Std 1 C26 Capacitor ceramic 47 pF 50 V NPO 5 0805 Std Std 1 C...

Page 14: ...istor chip 301 k 1 4 W 1 1206 Std Std 2 R2 R5 Resistor chip 1 00 M 1 4 W 1 1206 Std Std 1 R4 Resistor chip 4 02 k 1 8 W 1 0805 Std Std 1 R6 Resistor chip 6 19 k 1 8 W 1 0805 Std Std 2 R7 R28 Resistor...

Page 15: ...21 k 1 4 W 1 1206 Std Std 1 U1 LED Lighting Power Controller TI UCC28810D 1 U2 Timer Low Power CMOS TI TLC555D 1 U3 LED Lighting Power Controller TI UCC28811D 1 PCB 10 4 in x 2 in x 0 062 in Any HPA43...

Page 16: ...This notice contains important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application engineer or...

Page 17: ...ce TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonabl...

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