Texas Instruments Dual-Slot ATCA AdvancedMC TPS2358 User manual

1 Introduction
2 Description
2.1 Module Overview
User's GuideSLUU328 – 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 learnabout the features and operation of the TPS2358 integrated circuit from Texas Instruments (TI). TheTPS2358 Dual-Slot ATCA™ AdvancedMC™ Controller manages two 12-V and two 3.3-V power rails, andfeatures 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 limitand 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 requirementsfor 12-V and 3.3-V control of Advanced Mezzanine Card (AdvancedMC™) modules. Each deviceincorporated onto a Carrier Card provides full control for two AdvancedMC™ slots according to therequirements 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 redundantsupply implementations in Micro Telecommunications Computing Architecture (MicroTCA™) systems.
The TPS2358EVM is a single-board evaluation platform consisting of two main sections. When orientedwith the board nomenclature and switch labels in a normal, upright reading position towards the user, thetop portion contains the TPS2358 device and typically required components. The bottom section containsmore 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 featureddevice, 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 ondriven AdvancedMC™ modules; alternatively, the user’s test loads can be connected at the output bananajacks. Various timing capacitor options, for each power rail, are available and user-selectable via DIPswitch 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 foractuation of the chip enable inputs are organized in a row along the bottom edge of the PCB.
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2.2 Typical Applications
2.3 Features
Description www.ti.com
The TPS2358EVM was designed with independent input and output banana jacks for up to two each 12-Vinput and 3.3-V input power supplies, and up to two each 12-V and 3.3-V output power rails. This providesthe 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 theapplication of a single 12-V supply and single 3.3-V supply to two AdvancedMC-like loads. Thisconfiguration allows users to learn about the device operation in non-redundant applications. Driving thesupply inputs independently while ganging together the common potential output nodes demonstratesoperation in redundant systems, albeit through a common controller IC. In either case, switch-selectabletiming capacitors complete device configuration for the target application.
As supplied from the factory, the EVM comes with current limits programmed for the requirements ofManagement Power and Payload Power control for AdvancedMC™ modules. However, limit thresholds onthe 12-V channels are programmable by the user; instructions for modifying current limits are includedbelow. This flexibility with the TPS2358 enables use in other, proprietary systems requiring 12-V and 3.3-Vsupply control.
Lastly, the EVM features two expansion ports and related jumpers needed to parallel multiple devicestogether to create a true redundant system. Additional EVM modules for this purpose can be ordereddirectly from the TI website at http://www.productfolderURL , or contact your local TI representative.
The TPS2358EVM includes the following features:•One TPS2358 Dual-Slot ATCA™ AdvancedMC™ Controller•Programming and sense resistors (12-V)•Low R
DS
(ON) pass and block FET’s (12-V)•Input and output power jacks for external supply and optional load connection•Up to 880 µF (4 ×220 µF) jumpered load capacitors (each channel) for simulated Payload Poweroutput bulk capacitance•150 µF jumpered load capacitor for each Management Power channel•Multiple, switch-selectable fault timer settings, each channel•Slide switch actuation of enable inputs•Expansion port headers
The use of these features is described in greater detail later in this document.
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3 Electrical Specifications
3.1 Absolute Maximum Ratings
3.2 Recommended Operating Conditions
www.ti.com Electrical Specifications
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 VInput voltage range, +3.3-V supply –0.3 V to 4 VApplied voltage, pins of J21, J22 EN12x, ORENx –0.3 V to (V
IN
(12VINx) + 0.5 V)Applied voltage, pins of J21, J22 SUMx, EN3x –0.3 V to (V
IN
(3V3INx) + 0.5 V)Output current, 12-V outputs TBDOutput current, 3.3-V outputs Internally limited by deviceOutput current, SUMx -5 mAStorage temperature range –55 °C to 150 °C
(1)
All voltages are with respect to the EVM GND node.(2)
Currents are positive into and negative out of the specified terminal.
The recommended operating conditions for the TPS2358EVM are given in Table 2 .
Table 2. Recommended Operating Conditions, TPS2358EVM
(1) (2)
PARAMETER MIN TYP MAX UNITS
Input supply voltage, +12-V 8.8 12 13.2 VInput supply voltage, +12-V (for specified V
OUT
) 11.3 12 13.2 VInput supply voltage, +3.3-V 2.85 3.3 3.5 VInput supply voltage, +3.3-V (for specified V
OUT
) 3.235 3.3 3.465 VLoad current, Payload Power Out (either channel) –7.4 ALoad current, Mgmt Power Out (either channel) –165 mA
(1)
All voltages are with respect to the EVM GND node.(2)
Currents are positive into and negative out of the specified terminal.
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3.3 Electrical Characteristics
Electrical Specifications www.ti.com
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: V
IN
(12VINx) and V
IN
(3V3INx) per Table 2 under (for specified V
OUT
). T
A
= 25 °CEN12x = HI, ORENx = HI,Output Voltage, Payload Power Out (either channel) 10.8 13.2 VI
LPWR
< I
LPWR_MAX
3.46Output Voltage, Mgmt Power Out (either channel) EN3x = HI, I
LMP
< I
LMP_MAX
3.135 V5Current limit threshold, Payload Power (either channel) 7.4 8.36 9.1 ACurrent limit threshold, Mgmt Power (either channel) 170 195 225 mAFast trip threshold, Payload Power (either channel) 24.5 AFast trip threshold, Mgmt Power (either channel) 400 mAOutput capacitance, Payload Power (C
L_PWR
) (each
All 4 load caps connected 704 880 1056 µFchannel)
Output capacitance, Mgmt Power (C
L_MP
) (each channel) Load cap connected 120 150 180 µFV
IN
= 12V–13.2V,Output ramp time, Payload Power V
O
= 0V to 98% ×V
IN
, 1.31 2.01 mSR
LOAD
= 1K, C
LOAD
= C
L_PWR
V
IN
= 3.3V–3.465V,Output ramp time, Mgmt Power V
O
= 0 V to 98% V
IN
, 2.57 3.74 mSR
LOAD
= 270, C
LOAD
= CL_MP
(1)
All voltages are with respect to the EVM GND node.
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4 Schematic Diagram
1
+
+
1
+
1
+
+ ++
+ +
+ ++
www.ti.com Schematic Diagram
The schematic diagram for the TPS2358EVM is shown in Figure 1 and Figure 2 .
Figure 1. TPS2358 Evaluation Module Schematic Diagram, Sheet 1
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1 1 1 1 1 1
1
1
1
Schematic Diagram www.ti.com
Figure 2. TPS2358 Evaluation Module Schematic Diagram, Sheet 2
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5 Test Set-Up
5.1 Equipment Requirements
TP3
TP1
TP2
TP7
TP9
TP8
TP11
TP12
TP10
TPS2358EVM-001
Dual-Slot ATCATM
AdvancedMC
TM Controller
12VIN1
GND
3V3IN1
3V3IN2
GND
12VIN2
12-V POWER
SUPPLY
+-
3.3-V POWER
SUPPLY
+-
OSCILLOSCOPE
CH 1
CH 2
CH 3
CH 4
VOLTS COM
DMM
VOLTS COM
DMM
VOLTS COM
DMM
TP30TP31TP32TP33
www.ti.com Test Set-Up
The following test and interface equipment (not supplied) is required to verify EVM module operation, andbegin 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 boardand a good starting point for user evaluation of device operation. Screen print labeling on the boardemploys a naming convention in keeping with the nomenclature of the target ATCA™ and MicroTCA™applications. Input 3.3-V supplies are connected to the 3V3INx jacks, and 12-V supplies are connected tothe 12VINx jacks. A cross-reference of power rail labeling to standards naming is shown in Table 4 .
Table 4. TPS2358EVM Output Net and Jack Naming
REF.DES. CONNECTOR LABEL DESCRIPTION
J8 SLOT A MP AdvancedMC™ Slot A Management PowerJ7 SLOT A PWR AdvancedMC™ Slot A Payload PowerJ9 GND Common load return node for Slot AJ11 SLOT B MP AdvancedMC™ Slot B Management PowerJ10 SLOT B PWR AdvancedMC™ Slot B Payload PowerJ12 GND Common load return node for Slot B
(1) The 3V3INx jacks can be jumpered together with a short test lead at the board, fed from a single lead fromthe power supply.(2) Run separate leads from the GND jacks back to a common return point made near the power supply outputterminals.
Figure 3. TPS2358EVM Set-up — Non-Redundant System Connection
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6 Test Procedure
6.1 Jumper Installation
Test Procedure www.ti.com
The following procedure can be used to verify functional operation of the EVM assembly upon receipt.
The TPS2358EVM makes use of various jumpers for quick change of functional configurations. Verify themodule was supplied with shunt jumpers installed across the headers listed in Table 5 . For 3-poinheaders, note the pin pairs to be connected.. Reconfigure jumper connections if necessary.
Table 5. Initial Jumper Settings
Signal and Control Jumpers
J13, J20J16-2 to J16-3, J19-2 to J19-3J24 – J28J29, J30J31, J32J33 - J37J38, J39
On the EVM board, place the ENABLE slide switches, located along the bottom edge of the PCB, in theinitial positions shown in Table 6 .
Table 6. ENABLE Switch Initial Positions
Section Switch Name Initial Position
SLOT A MP HIPWR HIPWR_OR LOSLOT B MP HIPWR HIPWR_OR LO
Set all 8 DIP positions of switch S7 to the CLOSED position.
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6.2 Check-Out Steps
www.ti.com Test Procedure
Turn the voltage adjust knobs of both power supplies fully CCW. Adjust the current limit control of the15-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 secondsupply, and adjust the output for 12 V 5% at TP1. Verify all STATUS LED’s (located just above the slideswitches) are OFF.
On the oscilloscope, set the Channel 1 and 2 amplifiers to the 2 V/div scale, and position the tracesappropriately in the top half of the display for viewing 3.3-V magnitude waveforms. Set the Channel 3amplifier scale to 100 or 200 mV/div, and position that trace about one division below center of the screen.Set the current pulse amplifier scale to 100 mA/div, and position that trace towards the bottom of thescope screen. Set the scope to trigger on the rising edge of Channel 1, at a threshold of about 1.5 V. Setthe time base to 1 mS/div, and set the trigger mode to NORMAL.
On the EVM board, place the SLOT A MP ENABLE switch in the LO position. The SLOT A MP greenSTATUS LED should illuminate. On the oscilloscope, verify a waveform capture was obtained similar tothe one shown in Figure 4 . The total voltage ramp time of the Channel 1 waveform, from 0 volts to about3.2 volts should be 2.6 0.6 mS. The Channel 3 waveform should attain a peak amplitude (prior to pullinglow again) of about 180 mV, for a nominal 2.6 ms output ramp time. The actual amplitude obtained varieslinearly with the ramp time, and has some inherent tolerance of its own. The peak amplitude of the currentpulse on Channel 4 should be 195 25 mA. A DVM can be used to verify the voltage at TP8 (with respectto ground at TP9) is within 10 mV of the 3.3-V input supply voltage at 3V3IN1 (TP2).
Figure 4. Output Ramp-Up Waveforms – 3.3-A Rail
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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 theEVM SLOT B MP ENABLE switch in the LO position. The SLOT B MP green STATUS LED shouldilluminate. 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 . ADVM can be used to verify the output voltage at TP11 (with respect to ground at TP12) is within 10 mV ofthe 3.3-V input supply setting.
Figure 5. Output Ramp-up Waveforms – 3.3B Rail
Change the oscilloscope probe connections and amplifier settings as shown below. It may be beneficial tomove the Channel 1 and 2 trace positions for viewing a couple of 12-V waveforms in the top half of thescreen.
•Chan. 1 -- TP7: 5 V/div•Chan. 2 -- TP10: 5 V/div•Chan. 3 -- TP32: 100 or 200 mV/div
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