Using the TPS2458EVM User's Guide Literature Number: SLUU348A February 2009 – Revised August 2009
User's Guide SLUU348A – February 2009 – Revised August 2009 TPS2458 ATCA™ AdvancedMC™ Controller 1 Introduction The AdvancedMC™ Controller Evaluation Module (EVM) is a PCB platform for users to learn about the features and operation of the TPS2458 integrated circuit (IC) from Texas Instruments (TI). The TPS2458 ATCA™ AdvancedMC™ Controller IC manages a 12-V and a 3.3-V power rail and features inrush and fault current limiting, FET OR’ing, input UVLO protection and logic-level enable inputs.
Electrical Specifications www.ti.com 2.
Schematic Diagrams 4 www.ti.com Schematic Diagrams + 1 + 1 + 1 + + + The schematic diagrams for the TPS2458EVM is shown in Figure 1. Figure 1.
Test Set-Up www.ti.com 5 Test Set-Up 5.1 Equipment Requirement 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 TPS2458EVM and test equipment as shown in Figure 2 for functional check-out of the board and a good starting point for user evaluation of device operation.
Test Set-Up 5.2 www.ti.com Jumper Installation The TPS2458EVM 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 4. For 3-pin headers, note the pin pairs to be connected. Reconfigure jumper connections if necessary. Table 4.
EVM Feature Details www.ti.com 6 EVM Feature Details 6.1 Test Points The TPS2458EVM contains numerous test points throughout the circuit for user monitoring of waveforms and voltage measurement. Table 6 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.
EVM Feature Details 6.2 www.ti.com Connecting Loads to the TPS2458EVM Each of the power rails of the TPS2458EVM 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.
Assembly Drawing and PCB Layout www.ti.com 7 Assembly Drawing and PCB Layout The top assembly drawing and individual PCB layers for the TPS2458EVM are shown in the following figures. Figure 5.
Assembly Drawing and PCB Layout www.ti.com Figure 6.
Assembly Drawing and PCB Layout www.ti.com Figure 7.
Assembly Drawing and PCB Layout www.ti.com Figure 8.
Assembly Drawing and PCB Layout www.ti.com Figure 9.
List of Materials 8 www.ti.com List of Materials Table 8. TPS2348 List of Materials (1) (2) (3) (4) (5) (6) (7) (8) (9) COUNT (1) (2) (3) (4) (5) (6) (7) (8) (9) 14 REF DES DESCRIPTION PART NUMBER MFR 3 C1, C2, C3 Capacitor, ceramic, 25 V, X7R, 20%, 0.1 µF, 0805 Std. Std. 1 C11 Capacitor, aluminum, SM, 10 V, ±20%, 150 µF, case D EEV-FK1A151P Panasonic 1 C12 Capacitor, ceramic, 10 V, X7R, 10%, 0.022 µF, 0805 Std. Std. 2 C13, C17 Capacitor, ceramic, 10 V, X7R, 10%, 0.
List of Materials www.ti.com Table 8. TPS2348 List of Materials (continued) COUNT REF DES DESCRIPTION PART NUMBER MFR 1 R1 Resistor, metal strip, 1 W, 1%, 0.005 Ω, 2512 WSL25125L000FEA Vishay-Dale 1 R2 Resistor, chip, 1/10 W, 1%, 422 Ω, 0805 Std Std 1 R3 Resistor, chip, 1/10 W, 1%, 6.81 kΩ, 0805 Std Std 1 R4 Resistor, chip, 1/10 W, 1%, 3.
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