SP6134HVLEDEB

SP6134HVLED Evaluation Board Manual Ideal for 24V Bus Application Single Board for 1W, 3W and 5W Applications High Efficiency Small 10-Pin MSOP Package 600kHz Switching Frequency Enables Small Components Integrated Design with Minimal Components. Dual MOSFET for Spacing Saving DESCRIPTION AND BOARD SCHEMATIC The SP6134HVLED Evaluation Board is designed to help the user evaluate the performance of the SP6134H for use as a Luxeon 1W/3W/5W Driver. The evaluation board is a completely assembled and tested surface mount board which provides easy probe access points to all SP6134H inputs and outputs so that the user can quickly connect and measure electrical characteristics and waveforms. Rev 07/08/04 SP6134HVLED Evaluation Board Manual Copyright 2004 Sipex Corporation USING THE EVALUATION BOARD 1) Powering Up the SP6134HVLED Circuit The SP6134HVLED Evaluation Board can be powered from a 24V power supply. Connect with short leads directly to the “VIN” and “GND” posts. Plug the 1W/3W/5W Luxeon LumiLED between the “VOUT” and “VFB” posts. Refer to section 2 for Jumper (J1) setup for different LumiLED applications. 2) Using the J1 Jumper for different LumiLED Applications The SP6134HVLED Evaluation Board can be used to drive 1W, 3W or 5W LumiLED respectively, this can be done by using the J1 Jumper. When no hat was used for the J1, it is setup for 1W application. When the hat is put on 1 & 2 position, it is used for 5W application. When the hat is put on 2 & 3 position, it is used for 3W application. 3) Selecting the Bias Resistor The feedback voltage was programmed to be 200mV by using two divider resistors (R2 and R4) at the soft start pin. (The internal 0.8V reference was overwritten by the programmed 0.2V to reduce the sense voltage and increase the efficiency). The bias resistor is used to set the operating current of the LumiLED as equation V Rb = FB IF where VFB is set as 200mV, IF is the operating current of the LumiLED. For 1W application, IF=350mA, Rb=R1=0.56Ohm For 5W application, IF=700mA, Rb=R1//R5=0.28Ohm For 3W application, IF=1000mA, Rb=R1//R3=0.2Ohm POWER SUPPLY DATA For the standard evaluation board, the following chart shows the efficiency data for different applications. 100 95 90 Efficiency (%) 85 80 75 70 65 60 Single Two Three Four Five Six 1W 3W 5W Fig. 1 Efficiency data of the SP6134HVLED evaluation board 2 EVALUATION BOARD LAYOUT FIGURE 1: SP6134HVLEDEB COMPONENT PLACEMENT FIGURE 2: SP6134HVLEDEB PC LAYOUT TOP SIDE FIGURE 3: SP6134HVLEDEB PC LAYOUT BOTTOM SIDE 3 TABLE1: SP6134HVLEDEB LIST OF MATERIALS ORDERING INFORMATION Model Temperature Range Package Type SP6134HVLEDEB............................... -40°C to +85°C..............SP6134HVLED Evaluation Board SP6134HEU.......................................-40°C to +85°C...................................... 10-pin MSOP 4