This version is outdated by a newer approved version.
This version (17 Jan 2018 18:46) is a draft.
Approvals: 0/1
This version (17 Jan 2018 18:46) is a draft.Approvals: 0/1
This is an old revision of the document!
Table of Contents
EVALUATING THE ADUM3190S iCOUPLER ADuM3190s ISOLATED ERROR AMPLIFIER
Preface
The EVAL-ADUM3190S supports the ADuM3190s isolated error amplifier based on Analog Devices, Inc., iCoupler® technology. The ADUM3190S is ideal for linear feedback power supplies with primary side controllers enabling improvements in transient response, power density, and stability as compared to commonly used optocoupler and shunt regulator solutions. Included in the ADUM3190S is a wideband operational amplifier that can be used to set up a variety of commonly used power supply loop compensation techniques. The ADUM3190S is fast enough to allow a feedback loop to react to fast transient conditions and over current conditions. Also included is a high accuracy 1.225 V reference to compare with the supply output set point.
Complete specifications for the ADUM3190S are provided in the ADUM3190S data sheet available from Analog Devices, Inc., and should be consulted in conjunction with this Wiki user guide when using the evaluation board.
Overview
The EVAL-ADUM3190S board, shown in Figure 1, can be used to evaluate the performance and data sheet specifications of the ADUM3190S. Figure 2 shows the schematic of the EVAL-ADUM3190S circuit which can be used to test the accuracy of the ADUM3190S and perform other tests. The EVAL-ADUM3190S is a 4-layer PC board, complete with ground and power layers as shown in the Evaluation Board Schematics and Artwork section.
Evaluation Board
Figure 1. ADuM3190S Evaluation board—EVAL-ADUM3190S
Evaluation Board Schematic
Figure 1. ADuM3190S Evaluation board—EVAL-ADUM3190S
Figure 2 shows the ADuM3190 schematic of the EVAL-ADUM3190S evaluation board. U1 is the ADuM3190 in the center of the board and Pin 1 is the top-left pad with respect to the notch in the silkscreen’s package outline. C1, C2, C3, and C4 are ceramic 0603 1 μF bypass capacitors provided for proper bypassing of the ADuM3190 internal 3 V regulators on both sides of part. Also added to the board are 10 μF 0805 ceramic capacitors to the VDD1 and VDD2 connections to provide additional bypassing in case long wires are used from power supplies to the evaluation board. Test point connectors are provided for most of the important connections to pins of the ADuM3190. The following sections describe connections to make to power the EVAL-ADUM3190S and make performance tests.
Helpful Documents
- High speed ADC FIFO evaluation kits (HSC ADC Data Capture Boards)
- High speed ADC FIFO evaluation kit Wiki Page (HSC-ADC-EVALCZ)
- AN-905 Application Note, VisualAnalogTM Converter Evaluation Tool Version 1.0 User Manual
- AN-878 Application Note, High Speed ADC SPI Control Software
- AN-877 Application Note, Interfacing to High Speed ADCs via SPI
- AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation
Evaluation Board Files
The evaluation board layout, BOM, and schematic files for the EVAL-AD9246S board can be downloaded from the links below.
DISCLAIMER: The footprint used for layout on the evaluation board is provided for general reference only. The exact footprint required for mounting this device onto a printed circuit board will depend on the device lead forming and may differ from what is provided herein. It is recommended to generate specific footprint information from the users lead forming specifications when placing this device on the application printed circuit board.
Artwork:
BOM:
Schematic:
Equipment Needed
- Analog signal source and antialiasing filter
- Sample clock source
- (1) 6.0 V, 2.5 A switching power supply, CUI EPS060250UH-PHP-SZ provided
- (1) 6.0 V, 2 A switching power supply, RAI S060S200A1 provided
- PC running Windows®
- USB 2.0 port
- EVAL-AD9246S board
- HSC-ADC-EVALCZ FPGA-based data capture kit
Visual Analog Canvases and FPGA File Needed
The canvas files required to run the EVAL-AD9246S board need to be downloaded, unzipped, and saved to an accessible location.
The canvas files can be downloaded from here:
ad9246s_va_canvases.zip
The FPGa file can be download from here:
ad9265_cmos.zip
Getting Started
This section provides quick start procedures for using the EVAL-AD9246S board. Both the default and optional settings are described.
resources/eval/eval-adum3190s.1516211199.txt.gz · Last modified: 17 Jan 2018 18:46 by Jonathan Harris