EVB-EP53F8QI

Enpirion® Power Evaluation Board User Guide EP53F8QI PowerSoC Enpirion EP53F8QI 1.5A Synchronous DCDC Converter Module Evaluation Board Introduction Thank you for choosing Altera Enpirion power products! You are evaluating a new class of DCDC converter product, a complete power system on silicon: • • • • • • • The EP53F8QI is a complete module with integrated magnetics. The evaluation board is designed to offer a wide range of engineering evaluation capabilities. Pads are available to add up to one additional input capacitor and up to one additional output capacitors to allow for evaluation of performance over a wide range of input/output capacitor combinations. Output voltage is programmed using a resistor divider. The board comes populated with four pre-placed resistors and a jumper to choose one of four preset output voltages. Easy jumpers are provided for the following signals: o Enable o VOUT Numerous test points are provided as well as clip leads for input and output connections The board comes with input decoupling and input reverse polarity protection to protect the device from common setup mishaps. Quick Start Guide Figure 1 shows a top view of the evaluation board. STEP 1: Set the “ENABLE” jumper to the Disable Position. ENABLE STEP 2: Set the output voltage by setting jumper “J2” to one of the pre selected output voltage settings. STEP 3: Connect Power Supply to the input power connectors, VIN (+) and GND (-). Page 1 of 8 www.altera.com/enpirion DISABLE Enpirion® Power Evaluation Board User Guide EP53F8QI PowerSoC CAUTION: be mindful of the polarity. Even though the evaluation board comes with reverse polarity protection diodes, it is rarely a good idea to reverse the input polarity. STEP 4: Connect the load to the output connectors VOUT (+) and GND (-). STEP 5: Power up the board and move the ENABLE jumper to the enabled position. The EP53F8QI is now powered up. Figure 1. Evaluation Board Layout. Page 2 of 8 www.altera.com/enpirion Enpirion® Power Evaluation Board User Guide EP53F8QI PowerSoC Output Voltage Select The output voltage of the EP53F8QI is programmed using a simple resistor divider. The evaluation board comes pre-populated with a set of four jumpers that allow the user to choose one of four preset voltages. Refer to Figure 1 and Figure 2 for the specific settings. If no jumper is populated the default voltage setting will be 0.6V. It is also possible to remove one of the preset resistors and replace with another value to generate any desired output within the devices operating range. Refer to the product data sheet for further information on setting the output voltage. Figure 2 shows a close-up of the jumper on the evaluation board. Figure 2. Close up of the VOUT setting jumpers, J2. Page 3 of 8 www.altera.com/enpirion Enpirion® Power Evaluation Board User Guide EP53F8QI PowerSoC Test Recommendations Recommendations To guarantee measurement accuracy, the following precautions should be observed: 1. Make all input and output voltage measurements at the board using the test points provided. This will eliminate voltage drop across the line and load cables that can produce false readings. 2. Measure input and output current with series ammeters or accurate shunt resistors. This is especially important when measuring efficiency. 3. Use a balanced impedance probe tip across COUT to measure VOUT Ripple to avoid noise coupling into the probe ground lead. The recommended probe configuration is shown in Figure 3. Figure 3. Recommended probe configuration. Input and Output Capacitors The input capacitance requirement is a 10 uF and a 680pF MLCC capacitor in parallel. The smaller valued capacitor, the 680pF, must be placed closest to the EP53F8QI. Both capacitors have been placed as close to the device as possible to minimize the physical area of the input AC current loop. There is a pre-tinned pad that allows for an additional 0805 case size MLCC capacitor to experiment with input filter performance. The output capacitance requirement is a minimum of 22uF. The evaluation board comes populated with a single 22uF 0805 case size MLCC capacitor. The board has a pre-tinned pad for up to 1 additional 0805 case size output capacitor. NOTE: Capacitors must be X5R or X7R dielectric formulations. Page 4 of 8 www.altera.com/enpirion Enpirion® Power Evaluation Board User Guide EP53F8QI PowerSoC Evaluation Board Metal Layers Figure 4. Top layer metal with silkscreen. Figure 5. Top layer metal. Page 5 of 8 www.altera.com/enpirion Enpirion® Power Evaluation Board User Guide EP53F8QI PowerSoC Figure 6. Bottom layer metal. Page 6 of 8 www.altera.com/enpirion Enpirion® Power Evaluation Board User Guide EP53F8QI PowerSoC Evaluation Board Schematic R5 = 237k R3 = 46.4k for 3.7V VOUT for VIN = 5V R4 = 118k for 1.8V VOUT for VIN = 5V R6 = 237k for 1.2V VOUT for VIN = 5V R7 = 357k for 1.0V VOUT for VIN = 5V C6 = 5.0pF C2 = 680pF C1 = 10uF C5 = 22uF Page 7 of 8 www.altera.com/enpirion Enpirion® Power Evaluation Board User Guide EP53F8QI PowerSoC Contact Information Altera Corporation 101 Innovation Drive San Jose, CA 95134 Phone: 408-544-7000 www.altera.com © 2013 Altera Corporation—Confidential. All rights reserved. ALTERA, ARRIA, CYCLONE, ENPIRION, HARDCOPY, MAX, MEGACORE, NIOS, QUARTUS and STRATIX words and logos are trademarks of Altera Corporation and registered in the U.S. Patent and Trademark Office and in other countries. All other words and logos identified as trademarks or service marks are the property of their respective holders as described at www.altera.com/common/legal.html. Altera warrants performance of its semiconductor products to current specifications in accordance with Altera's standard warranty, but reserves the right to make changes to any products and services at any time without notice. Altera assumes no responsibility or liability arising out of the application or use of any information, product, or service described herein except as expressly agreed to in writing by Altera. Altera customers are advised to obtain the latest version of device specifications before relying on any published information and before placing orders for products or services. Page 8 of 8 www.altera.com/enpirion