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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 module.
The EP53A8xQI converters are a complete power system on chip or PowerSoC.
• These devices are complete modules including magnetics, and require
only ceramic input and output capacitors.
• The evaluation board is designed to offer a wide range of engineering
evaluation capabilities.
input capacitor and a 0805 output capacitor.
• Pads are available to add up to one additional input capacitor and one
additional output capacitor for evaluation of performance over a wide
range of input/output capacitor combinations.
• Pads are available to populate an external voltage divider (for feedback) if
desired. The pads are labeled R1 and R2. Pads are also available for
placing an optional feed-forward capacitor (labeled C9) across resistor R1
to modify the compensation.
• Jumpers are provided for easy programming of the following signals:
o Enable
o VS0-VS2 output voltage selection pins
• 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 safeguard the device from common setup mishaps.
®
Enpirion
Power Evaluation Board User Guide
This includes the base configuration of a 0603
Page 1 of 7
www.altera.com/enpirion
EP53A8xQI PowerSoC
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Related Manuals for Altera EP53A8LQI
Summary of Contents for Altera EP53A8LQI
- Page 1 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 module.
- Page 2 CAUTION: The external resistor divider is not populated in the standard board configuration. Choosing the “EXT” option for the EP53A8LQI without the external resistors R1 and R2 will result in unpredictable behavior. STEP 4: Connect the load to the output connectors TP7 (+) and TP6 (-), as indicated in Figure 1.The same test points are also used to measure the DC...
- Page 3 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 selection. There are seven preset output voltage levels for the EP53A8LQI, and eight preset levels for the EP53A8HQI.
- Page 4 This minimizes probe loop inductance and stray noise pickup by the probe. Please contact Power Applications support (www.altera.com/mysupport) for any questions regarding this evaluation board. Page 4 of 7...
- Page 5 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 the VID. See Figure 3 for the basic circuit.
- Page 6 Vf b Vsense AGND EP53A8xQI NOTE: Input/Output capacitors 0805 must be X5R or X7R dielectric 1206 formulations. Do not use Y5V or any similar dielectric. Vout Schematic 03400 03401 Figure 4: EP53A8QI Evaluation Board Schematic Page 6 of 7 www.altera.com/enpirion...
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Page 7: Contact Information
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.