Texas Instruments TPS2458 Hot Swap/ORing Controller Evaluation Module TPS2458EVM TPS2458EVM Hoja De Datos
Los códigos de productos
TPS2458EVM
1
Introduction
2
Description
2.1
Module Overview
User's Guide
SLUU348A – February 2009 – Revised August 2009
TPS2458 ATCA™ AdvancedMC™ Controller
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. Current control on
the 12-V rail 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 two 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 channel is fully integrated into the device.
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. Current control on
the 12-V rail 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 two 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 channel is fully integrated into the device.
Power management applications based on the TPS2458 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 an AdvancedMC™ slot according to the
requirements of the Advanced Telecommunications Computing Architecture (ATCA™) specification,
PICMG 3.0.
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 an AdvancedMC™ slot according to the
requirements of the Advanced Telecommunications Computing Architecture (ATCA™) specification,
PICMG 3.0.
The TPS2458EVM 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 TPS2458 IC 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.
with the board nomenclature and switch labels in a normal, upright reading position towards the user, the
top portion contains the TPS2458 IC 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 two power channels, including the featured
device, support passives, input and output banana jacks, control FET’s (for 12-V rail), 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 S4. Numerous jumpers are provided throughout the circuit for maximum configuration flexibility.
Test points are available for voltage and waveform monitoring.
device, support passives, input and output banana jacks, control FET’s (for 12-V rail), 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 S4. Numerous jumpers are provided throughout the circuit for maximum configuration flexibility.
Test points are available for voltage and waveform monitoring.
The bottom section contains 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.
of the chip enable inputs are organized in a row along the bottom edge of the PCB.
TPS2458 ATCA™ AdvancedMC™ Controller
2
SLUU348A – February 2009 – Revised August 2009