Altera EP53A8LQI Operation & User’s Manual

EP53A8xQI PowerSoC Enpirion EP53A8xQI DC/DC Converter Module Evaluation Board Introduction Thank you for choosing Altera Enpirion power products! This application note describes how to test the EP53A8LQI and the EP53A8HQI converters using the Altera Enpirion EP53A8QI Eval Board shown in Fig. 1. In addition to this document you will also need the device datasheet for a thorough evaluation of the power converter m ...

EP53A8xQI PowerSoC Quick Start Guide STEP 1: Set the “ENABLE” jumper to the Disable Position. Set VS0, VS1 and VS2 pins for the desired output setting. CAUTION: The signal pins ENA, VS0, VS1 and VS2 must be connected to a logic “high”, jumper to the left, or a logic “low”, jumper to the right. If left floating the state is indeterminate. STEP 2: Connect a power supply to the input test points, TP8 ...

EP53A8xQI PowerSoC Figure 1. Evaluation Board Layout Output Voltage Select The EP53A8xQI utilizes a 3 pin output voltage select scheme. The output voltage is programmed by setting the VSx jumpers to either logic “1” or logic “0” as described in the Quick Start section. Tables 1 and 2 show the truth table for VOUT selection. There are seven preset output voltage levels for the EP53A8LQI, and eight prese ...

EP53A8xQI PowerSoC Table 2. EP53A8HQI Output Voltage Select Table VS2 VS1 VS0 VOUT 0 0 0 3.3 0 0 1 3.0 0 1 0 2.9 0 1 1 2.6 1 0 0 2.5 1 0 1 2.2 1 1 0 2.1 1 1 1 1.8 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 ...

EP53A8xQI PowerSoC Using the External Voltage Divider The EP53A8xQI evaluation board is designed to provide a great deal of flexibility in evaluating the performance of the Altera Enpirion DC/DC module. Pre-tinned pads are provided to place 0805 sized resistors on the board to implement an external resistor divider for the EP53A8LQI to choose an output voltage other than one of the pre-set voltages available on ...

EP53A8xQI PowerSoC Dynamically Adjustable Output The EP53A8xQI is designed to allow for dynamic switching between the predefined voltage levels by toggling the VID pins. The inter-voltage slew rate is optimized to prevent excess undershoot or overshoot as the output voltage levels transition. The slew rate is defined in the datasheet. This feature can be tested by connecting the VSx jumper center pins to logic ...

EP53A8xQI 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. A ...