EPC9102

EPC reserves the right at any time, without notice, to change said circuitry and specifications. Demonstration Board Notification The EPC9102 board is intended for product evaluation purposes only and is not intended for commercial use. As an evaluation tool, it is not designed for compliance with the European Union directive on electromagnetic compatibility or any other such directives or regulations. As board builds are at times subject to product availability, it is possible that boards may contain components or assembly materials that are not RoHS compliant. Efficient Power Conversion Corporation (EPC) makes no guarantee that the purchased board is 100% RoHS compliant. No Licenses are implied or granted under any patent right or other intellectual property whatsoever. EPC assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind. * Maximum limited by thermal considerations † Board placed vertical on long edge to aid convection – Do NOT operate horizontally without forced air cooling 750 kHz Peak Efficiency 36 VIN, 10 A IOUT 94.8 % Full Load Efficiency 48 VIN, 17 A IOUT 94 % Full Load Efficiency 60 VIN, 17 A IOUT 93.5 % 36 VIN, 17 A IOUT 94 % Full Load Efficiency Output ripple frequency EPC Products are distributed exclusively through Digi-Key. www.digikey.com IOUT Switch Node Output Current fSW Switching frequency 375 kHz Ta = 25 °C, no forced air cooling Ta = 25 °C, ~200 LFM Ta = 25 °C, ~400 LFM 8* 15* 17* † VIN Bus Input Voltage Range VOUT Switch Node Output Voltage SYMBOL PARAMETER 12 36 CONDITIONS MIN A A A V TYP MAX UNITS 48 60 V Table 1: Performance Summary (TA = 25 °C) Quick Start Procedure VIN GND Demonstration board EPC9102 is easy to set up to evaluate the performance of the EPC2001 eGaN FETs and LM5113 driver. Refer to Figure 2 for proper connect and measurement setup and follow the procedure below: 7.5k 1. With power off, connect the input power supply bus between VIN and INPUT RET banana jacks as shown. 0.1uF 2. Add input and output voltage measurements to the Kelvin connections provided as shown. 22pF 0.68uH 0.1uF 5V sec LM 5113 5V pri EPC2001 OUT1 5V pri EPC2001 10 4.7uF 0.1uF 4.7uF 5 turns EPC2001 EPC2001 Do not use probe ground lead LM 5113 10 OUT2 OUT1 Deadtime adjust Deadtime adjust 0.1uF 0.1uF 5V sec EPC2001 GND 4. Turn on the supply voltage to the required value. (do not exceed the absolute maximum voltage of 60 V on VIN). EPC EFFICIENT POWER CONVERSION 0.006 Ohm 2.0k 5V pri 2.2 LM 5113 HS HOL HOH HB Vdd 3. With power off, connect the active (constant current) load as desired between VOUT and OUT RET banana jacks as shown. EPC9102, EIGHTH BRICK CONVERTER 10 GND ER18 GND Isolated bias supply 22uF OUT2 2.2uF x 3 eGaN® FET © EPC 2011 10 5V pri LM 5030 RT VIN SS VCC COMP VFB OUT1 CS OUT2 GND HS HOL HOH HB Vdd HI LI VSS LOL LOH VDD HB HOH HOL HS LOH LOL VSS LI HI 2 turns EPC2001 1.1uF ER18 2.2 12V Minimize loop LM 5113 4.7uF 2.2 22uF x 3 2.2 EPC2001 Place probe tip in large via GND ER18 4.7uF VDD HB HOH HOL HS LOH LOL VSS LI HI HI LI VSS LOL LOH Isolation and logic Peter Cheng FAE Support, Asia Mobile: +886.938.009.706 peter.cheng@epc-co.com There are also various probe points to facilitate simple waveform measurement and efficiency calculation. A complete block diagram of the circuit is given in Figure 1. For more information on the EPC2001 eGaN FETs or LM5113 driver, please refer to the datasheet available from EPC at www.epc-co.com and www. TI.com. These datasheets, as well that of the LM5030 controller should be read in conjunction with this quick start guide. The EPC9102 demonstration board is oversized to allow connections for bench evaluation. 5. Measure the output voltage to make sure the board is fully functional and operating no-load. Stephen Tsang Sales, Asia Mobile: +852.9408.8351 stephen.tsang@epc-co.com 1/8 th Brick Converter featuring EPC2001 The EPC9102 demonstration board is a 12 V output, 375 kHz phase shifted full bridge (PSFB) eighth brick converter with 17 A maximum output current and 36 V to 60 V input voltage range. The demonstration board features the EPC2001 enhancement mode (eGaN®) field effect transistors (FETs), as well as the first eGaN FET specific integrated circuit driver – the National LM5113 from Texas Instruments. The EPC9102 board is intended to showcase the performance that can be achieved using the eGaN FETs and eGaN driver together. 6. Turn on active load to the desired load current while staying below the maximum current (This will depend on the cooling provided. If no forced air cooling, then keep the load current below 8 A) Bhasy Nair Global FAE Support Office: +1.972.805.8585 Mobile: +1.469.879.2424 bhasy.nair@epc-co.com Demonstration Board EPC9102 Quick Start Guide www.epc-co.com 7. Once operational, adjust the bus voltage and load current within the allowed operating range and observe the output switching behavior, efficiency and other parameters. Renee Yawger WW Marketing Office: +1.908.475.5702 Mobile: +1.908.619.9678 renee.yawger@epc-co.com www.epc-co.com Contact us: DESCRIPTION Figure 3: Proper Measurement of Switch Nodes or Output Voltage EPC2001 OV Deadtime adjust Deadtime adjust Isolation and feedback Figure 1: Block Diagram of EPC9102 Demonstration Board 8. For shutdown, please follow steps in reverse. NOTE. When measuring the high frequency content switch node voltage, care must be taken to avoid long ground leads. Measure these by placing the oscilloscope probe tip through the large vias provided and grounding the probe directly across the return vias provided. See Figure 3 for proper scope probe technique. Scope jacks can be soldered onto the board at these locations as desired. Please note that primary side switch node scope jacks are referenced to the TOP of the sense resistor and not GND. When measuring multiple signals ensure that they are always referenced to the same ‘ground’ potential to avoid potential circuit failure. EPC9102, EIGHTH BRICK CONVERTER eGaN® FET © EPC 2011 I IOUT IN A + A VIN Supply