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Enpirion EP5358xUI DC/DC Converter
Module Evaluation Board
Introduction
Thank you for choosing Altera Enpirion power products!
This application note describes how to test the EP5358xUI (EP5358LUI,
EP5358HUI) converters using Altera's Enpirion 2.5mmx2.25mm Module 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 EP5358xUI converters are part of a new class of DC/DC converter products,
a complete power system on chip (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 an 0805 output capacitor.
• Pads are available to add up to one additional input capacitor and up to
one additional output capacitor for evaluation of performance over a wide
range of input/output capacitor combinations.
• Pads are available to populate an external resistor divider to enable output
voltage programming of values not available using the VID. The pads are
labeled R1 and R2. Pads are also available for placing an optional feed-
forward capacitor (labeled C9) across resistor R1. NOTE: The External
voltage divider option is available only with EP5358LUI.
• 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 an 0603
Page 1 of 10
www.altera.com/enpirion
EP5358xUI PowerSoC
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Summary of Contents for Altera Enpirion EP5358xUI Series
- Page 1 Enpirion EP5358xUI DC/DC Converter Module Evaluation Board Introduction Thank you for choosing Altera Enpirion power products! This application note describes how to test the EP5358xUI (EP5358LUI, EP5358HUI) converters using Altera’s Enpirion 2.5mmx2.25mm Module 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 (GND), as indicated in Figure 1.The same test points are also used to measure the DC output voltage. STEP 5: Move the ENABLE jumper to the enabled position, and power up the board. The EP5358xUI should now be operational. Page 2 of 10 www.altera.com/enpirion...
- Page 3 ® Enpirion Power Evaluation Board User Guide EP5358xUI PowerSoC Figure 1. Evaluation Board silk screen. Page 3 of 10 www.altera.com/enpirion...
- Page 4 The EP5358HQI has eight preset output voltage levels and no external programming capability. Table 1: EP5358LUI Output Voltage Select Logic Table VOUT 1.50 1.45 1.20 1.15 1.10 1.05 Table 2: EP5358HUI Output Voltage Select Logic Table VOUT Page 4 of 10 www.altera.com/enpirion...
- Page 5 Using The External Voltage Divider The EP5358xUI evaluation board is designed to provide a great deal of flexibility in evaluating the performance of Altera’s Enpirion DC/DC module. Pre-tinned pads are provided to place 0805 sized 1% resistors on the board to implement an external resistor divider for the EP5358LUI to choose an output voltage other than one of the seven pre-set voltages available on the VID.
- Page 6 The slew rate is defined in the datasheet. This feature can be tested by connecting the VSx jumper center pins to logic driver to toggle between the various V states. Page 6 of 10 www.altera.com/enpirion...
- Page 7 The output capacitor must use a X5R or X7R or equivalent dielectric formulation. Y5V or equivalent dielectric formulations lose capacitance with frequency, bias, and temperature and are not suitable for switch-mode DC-DC converter output filter applications. Page 7 of 10 www.altera.com/enpirion...
- Page 8 CONNECTOR, CUSTOM, VERTICAL HEADER, SMT Connector/Contact Jumper/Connector Array COMPONENT NOT USED ** DO NOT INSTALL ** C1,C4,C5,C9,R1,R2,R3,U2 Not Used TEST POINT SURFACE MOUNT TP5,TP6,TP7,TP8 Connector/Contact Test Point RESISTOR ZERO OHM 1/10W 5% 0402 SMD Resistor Zero Ohm Jumper Page 8 of 10 www.altera.com/enpirion...
- Page 9 ® Enpirion Power Evaluation Board User Guide EP5358xUI PowerSoC Figure 5. 2.5mmx2.25mm Module Evaluation Board Schematic Page 9 of 10 www.altera.com/enpirion...
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Page 10: 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.