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1 Introduction

2 Description

2.1 Module Overview

User's Guide

SLUU328 – August 2008

TPS2358 Dual-Slot ATCA™ AdvancedMC™ Controller

Evaluation Module

The Dual-Slot AdvancedMC™ Controller Evaluation Module (EVM) is a PCB platform for users to learn

about the features and operation of the TPS2358 integrated circuit from Texas Instruments (TI). The

TPS2358 Dual-Slot ATCA™ AdvancedMC™ Controller manages two 12-V and two 3.3-V power rails, and

features inrush and fault current limiting, FET OR’ing, input UVLO protection and logic-level enable inputs.

Current control on the 12-V rails has a high degree of programmability, including independent current limit

and fast trip thresholds. Overcurrent fault timing is managed with user-programmable shut-down delays,

and each of the four power channels has dedicated fault and power good reporting outputs. In addition,

current sense and pass and block FET’s for the 3.3-V channels are fully integrated into the device.

Power management applications based on the TPS2358 are easily configured to meet the requirements

for 12-V and 3.3-V control of Advanced Mezzanine Card (AdvancedMC™) modules. Each device

incorporated onto a Carrier Card provides full control for two AdvancedMC™ slots according to the

requirements of the Advanced Telecommunications Computing Architecture (ATCA™) specification,

PICMG 3.0. In addition, the input supply FET OR’ing control for the 12-V rails facilitates efficient redundant

supply implementations in Micro Telecommunications Computing Architecture (MicroTCA™) systems.

The TPS2358EVM is a single-board evaluation platform consisting of two main sections. When oriented

with the board nomenclature and switch labels in a normal, upright reading position towards the user, the

top portion contains the TPS2358 device and typically required components. The bottom section contains

more ancillary circuitry intended to facilitate exercising the device through various application scenarios.

Power connectors are organized with inputs along the left edge of the board, outputs along the right.

The main (upper) section of the board is comprised of the four power channels, including the featured

device, support passives, input and output banana jacks, control FET’s (for 12-V rails), and power planes.

The board contains various capacitors for simulation of input bulk capacitance as may be present on

driven AdvancedMC™ modules; alternatively, the user’s test loads can be connected at the output banana

jacks. Various timing capacitor options, for each power rail, are available and user-selectable via DIP

switch S7. Numerous jumpers are provided throughout the circuit for maximum configuration flexibility.

Test points are available for voltage and waveform monitoring.

The bottom section contains two expansion port connectors and the status LED’s. Slide switches for

actuation of the chip enable inputs are organized in a row along the bottom edge of the PCB.

All trademarks are the property of their respective owners.

SLUU328 – August 2008 TPS2358 Dual-Slot ATCA™ AdvancedMC™ Controller Evaluation Module 1

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Summary of content (23 pages)

PAGE 1
User's Guide SLUU328 – August 2008 TPS2358 Dual-Slot ATCA™ AdvancedMC™ Controller Evaluation Module 1 Introduction The Dual-Slot AdvancedMC™ Controller Evaluation Module (EVM) is a PCB platform for users to learn about the features and operation of the TPS2358 integrated circuit from Texas Instruments (TI). The TPS2358 Dual-Slot ATCA™ AdvancedMC™ Controller manages two 12-V and two 3.
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Description 2.2 www.ti.com Typical Applications The TPS2358EVM was designed with independent input and output banana jacks for up to two each 12-V input and 3.3-V input power supplies, and up to two each 12-V and 3.3-V output power rails. This provides the greatest flexibility for configuring the EVM for either ATCA™ or MicroTCA™ applications. By connecting the two 12-V inputs and two 3.3-V inputs together, the TPS2358EVM can manage the application of a single 12-V supply and single 3.
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Electrical Specifications www.ti.com 3 Electrical Specifications 3.1 Absolute Maximum Ratings The absolute maximum ratings for the TPS2358EVM are given below in Table 1. Table 1. Absolute Maximum Ratings (1) (2) PARAMETER RATING Input voltage range, +12-V supply –0.3 V to 13.8 V Input voltage range, +3.3-V supply –0.3 V to 4 V Applied voltage, pins of J21, J22 EN12x, ORENx –0.3 V to (VIN(12VINx) + 0.5 V) Applied voltage, pins of J21, J22 SUMx, EN3x –0.3 V to (VIN(3V3INx) + 0.
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Electrical Specifications 3.3 www.ti.com Electrical Characteristics The electrical characteristics of the TPS2358EVM are as listed in Table 3. Table 3. Electrical Characteristics, TPS2358EVM (1) PARAMETER CONDITIONS MIN TYP MAX UNITS UNLESS OTHERWISE NOTED: VIN(12VINx) and VIN(3V3INx) per Table 2 under (for specified VOUT). TA = 25°C Output Voltage, Payload Power Out (either channel) EN12x = HI, ORENx = HI, ILPWR < ILPWR_MAX 10.8 13.
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Schematic Diagram www.ti.com 4 Schematic Diagram + + + 1 + 1 + + + + 1 + + + + The schematic diagram for the TPS2358EVM is shown in Figure 1 and Figure 2. Figure 1.
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Schematic Diagram 1 1 1 1 1 1 1 1 1 www.ti.com Figure 2.
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Test Set-Up www.ti.com 5 Test Set-Up 5.1 Equipment Requirements The following test and interface equipment (not supplied) is required to verify EVM module operation, and begin using the EVM. • Power supply, 3.3 VDC, 500 mA minimum • Power supply, 15 VDC, 10 A minimum • Digital multimeters • Oscilloscope, 4 channel, with current probe Connect the TPS2358EVM and test equipment as shown in Figure 3 for functional check-out of the board and a good starting point for user evaluation of device operation.
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Test Procedure 6 www.ti.com Test Procedure The following procedure can be used to verify functional operation of the EVM assembly upon receipt. 6.1 Jumper Installation The TPS2358EVM makes use of various jumpers for quick change of functional configurations. Verify the module was supplied with shunt jumpers installed across the headers listed in Table 5. For 3-poin headers, note the pin pairs to be connected.. Reconfigure jumper connections if necessary. Table 5.
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Test Procedure www.ti.com 6.2 Check-Out Steps Turn the voltage adjust knobs of both power supplies fully CCW. Adjust the current limit control of the 15-V supply for 10 amps minimum output. If not already done, connect the EVM and test equipment as shown in Figure 3. Turn on the 3.3-V power supply, and adjust the output for 3.3 V 5% at test point TP2. Turn on the second supply, and adjust the output for 12 V 5% at TP1. Verify all STATUS LED’s (located just above the slide switches) are OFF.
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Test Procedure www.ti.com Move the Channel 3 scope probe to test point TP30. Set the scope to trigger on Channel 2. Place the EVM SLOT B MP ENABLE switch in the LO position. The SLOT B MP green STATUS LED should illuminate. On the scope screen, verify a waveform capture was obtained similar to that shown in Figure 5. The Channel 2, 3 and 4 waveform parameters should be similar to those indicated above for Figure 4.
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Test Procedure www.ti.com Remove the current probe from the 3.3 V supply lead, and clamp it across the 12VIN2 supply lead. Change the Channel 4 amplifier setting to 5 A/div. Set the time base to 500 S/div, and adjust the scope trigger threshold to about 3 volts. On the EVM board, place the SLOT B PWR ENABLE switch to the LO position. The SLOT B PWR green LED should illuminate. On the scope, verify a waveform capture was obtained similar to that shown in Figure 6.
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Test Procedure www.ti.com Reconnect the Channel 3 scope probe to test point TP33. Set the scope to trigger on Channel 1. Disconnect the current probe and reconnect it across the 12VIN1 supply lead. Move the probe ground lead to test point TP9. Set the SLOT A PWR ENABLE switch to the LO position. The SLOT A PWR green STATUS LED should illuminate. On the scope, verify a waveform capture was obtained similar to that shown in Figure 7.
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EVM Feature Details www.ti.com 7 EVM Feature Details 7.1 Test Points The TPS2358EVM contains numerous test points throughout the circuit for user monitoring of waveforms and voltage measurement. Table 7 lists the module test points and the signal available at each one. The EVM PCB layout connects all ground nodes and supply returns to a common GND node, via several power plane areas.
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EVM Feature Details 7.2 www.ti.com Connecting Loads to the TPS2358EVM Each of the four power rails of the TPS2358EVM is supplied with some amount of load capacitance in the form of discrete electrolytics. The capacitors can be connected to or disconnected from their associated output nodes using 100-mil, 2-pin shunt jumpers across the on-board PCB headers.
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Assembly Drawing and PCB Layout www.ti.com 8 Assembly Drawing and PCB Layout The top assembly drawing and individual PCB layers for the TPS2358EVM are shown in the following figures. Figure 8.
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Assembly Drawing and PCB Layout www.ti.com Figure 9.
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Assembly Drawing and PCB Layout www.ti.com Figure 10.
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Assembly Drawing and PCB Layout www.ti.com Figure 11.
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Assembly Drawing and PCB Layout www.ti.com Figure 12.
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Assembly Drawing and PCB Layout www.ti.com Figure 13.
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List of Materials www.ti.com 9 List of Materials Table 9. List of Materials (1) COUNT (1) REF DES DESCRIPTION PART NUMBER MFR 5 C1, C2, C3, C4, C5 Capacitor, ceramic, 25 V, X7R, 20%, 0.1 µF, 0805 Std. Std.
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List of Materials www.ti.com Table 9. List of Materials (continued) COUNT 22 REF DES DESCRIPTION PART NUMBER MFR 2 R12, R13 Resistor, chip, 1/10 W, 5%, 270 Ω, 0805 Std. Std. 8 R17, R18, R19, R20, R21, R22, R23, R24 Resistor, chip, 1/10 W, 5%, 470 Ω, 0805 Std. Std. 2 R2, R4 Resistor, chip, 1/10 W, 1%, 422 Ω, 0805 Std. Std. 0 R5, R14, R15, R16, R25, R26, R27, R28 Resistor, chip, 1/10 W, 5%, 0805, Std. Std. 2 R6, R7 Resistor, chip, 1/10 W, 1%, 6.81 kΩ, 0805 Std. Std.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.