Using the TPS2459EVM
User's Guide
Literature Number: SLUU349
March 2009
User's Guide
SLUU349 – March 2009
TPS2459 Full-Featured AdvancedMC™ Slot Controller
Evaluation Module
1
Introduction
The Full-Featured AdvancedMC™ Slot Controller Evaluation Module (EVM) is a PCB platform for users to
learn about the features and operation of the TPS2459 integrated circuit (IC) from Texas Instruments (TI).
The TPS2459 Full Featured AdvancedMC™ Slot Controller manages a single 12-V and single 3.3-V
power rails, and features inrush and fault current limiting, FET OR’ing, input UVLO protection, logic-level
enable inputs and an I2C interface. Current control on the 12-V rail has a high degree of programmability,
including independent current limit and fast trip thresholds. System level timing and other control
parameters are accessed via the I2C interface, along with readback of FET and output rail status. In
addition, current sense and pass and block FET’s for the 3.3-V channel are fully integrated into the device.
Power management applications based on the TPS2459 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 power control for an AdvancedMC™ slot 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 rail facilitates efficient redundant
supply implementations in Micro Telecommunications Computing Architecture (MicroTCA™) systems.
2
Description
2.1
Module Overview
The TPS2459EVM is a single-board evaluation platform consisting of two main sections. When oriented
with the board nomenclature in a normal, upright reading position towards the user, the top approximately
one-half of the board is the TPS2459 and related components. The bottom half contains a complete
USB-to-I2C interface adapter, allowing access to the device’s internal I2C registers directly from the USB
port of any Windows-based host PC. 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 featured device, input and output banana jacks
for connection of the user’s supplies and test loads (if desired), and some on-board load capacitance.
Numerous jumpers are provided throughout the circuit for maximum configuration flexibility. Test points
are available for voltage and waveform monitoring.
The EVM kit includes a USB cable with the mating connector for the Type B-Mini connector on the EVM.
The TPS2459 EVM GUI is available for download from the TPS2459 product folder on the TI website,
www.TI.com . The GUI enables access to the control and status registers of the TPS2459 for quick set-up
and operation of the EVM without having to write any code.
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Description
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2.2
Typical Applications
The TPS2459EVM contains the necessary input connectors and external components to demonstrate the
application of 12-V and 3.3-V supplies to an AdvancedMC™-like load (12-V and 3.3-V load rails). The
module can be used independantly with just the on-board load capacitance, or the user’s test loads can be
attached to the output connectors. The EVM GUI provides easy access to the internal control bits to
complete device configuration for the target application. This configuration provides a complete set-up for
testing the TPS2459 power management of a single AdvancedMC™ slot in a non-redundant application.
If used in conjunction with a second EVM, with the two 12-V and two 3.3-V outputs connected together,
the modules can be used to test and demonstrate operation in redundant systems. The EVM features two
expansion ports and related jumpers needed to evaluate redundancy support. Setup details for this type of
testing are provided below. Additional EVM modules for this purpose can be ordered directly from the TI
website or by contacting your local TI representative.
As supplied from the factory, the EVM comes with current limits programmed for the requirements of
Management Power and Payload Power control for AdvancedMC™ modules. However, limit thresholds on
the 12-V channels are programmable by the user; instructions for modifying current limits are included
below. This flexibility with the TPS2459 enables use in other, proprietary systems requiring 12-V and 3.3-V
supply control.
2.3
Features
The TPS2459EVM includes the following features:
• One TPS2459 Full Featured AdvancedMC™ Slot Controller Device
• USB- to-I2C Interface Adapter
• Programming and Sense Resistors (12-V)
• Low RDS(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 x 220 µF) Jumpered Load Capacitors for Simulated Payload Power Output Bulk
Capacitance
• 150-µF Jumpered Load Capacitor for the Management Power Channel
• Address-Setting DIP Switch
• Slide Switch Actuation of Enable Inputs
• Expansion Port Headers
• Windows-Compatible EVM GUI
The use of these features is described in greater detail later in this document.
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Electrical Specifications
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3
Electrical Specifications
3.1
Absolute Maximum Ratings
The absolute maximum ratings for the TPS2459EVM 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 J17, J18
-0.3 V to 5 V
SUMx
Applied voltage, pins of J17, J18
-0.3 V to 3.5 V
SCL, SDA
Output current, 12-V output
10A
Output current, 3.3-V output
Internally limited by device
Output current, SUMx
Output current, FLTx, PGx
5 mA
Storage temperature range
-55°C to 150 °C
(1)
(2)
3.2
-5 mA
All voltages are with respect to the EVM GND node.
Currents are positive into and negative out of the specified terminal.
Recommended Operating Conditions
The recommended operating conditions for the TPS2459EVM are given in Table 2.
Table 2. Recommended Operating Conditions, TPS2459EVM (1) (2)
PARAMETER
Input supply voltage, 12 V
TYP
MAX
UNITS
8.8
12
13.2
Input supply voltage, 12 V (for specified VOUT)
11.3
12
13.2
Input supply voltage, 3.3 V
2.85
3.3
3.5
3.235
3.3
3.465
Input supply voltage, 3.3 V (for specified VOUT)
V
Load current, payload power out (SLOT_PWR)
-7.4
A
Load current, mgmt power out (SLOT_MP)
-165
mA
(1)
(2)
4
MIN
All voltages are with respect to the EVM GND node.
Currents are positive into and negative out of the specified terminal.
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3.3
Electrical Characteristics
The electrical characteristics of the TPS2459EVM are as listed in Table 3.
Table 3. Electrical Characteristics, TPS2459EVM (1)
PARAMETER
CONDITIONS
Output voltage, payload power out
(SLOT_PWR)
ENx = OREN = HI, ILPWR < ILPWR_MAX
Output voltage, mgmt power out
(SLOT_MP)
EN3 = HI, ILMP < ILMP_MAX
MIN
TYP
MAX
10.8
13.2
3.135
3.465
UNITS
V
Current limit threshold, payload power
7.4
8.36
Current limit threshold, mgmt power
170
195
9.1
A
225
mA
Fast trip threshold, payload power
24.5
A
Fast trip threshold, mgmt power
400
mA
Output capacitance, payload power
(CL_PWR)
All four load caps connected
704
880
1056
Output capacitance, mgmt power
(CL_MP)
Load cap connected
120
150
180
Output ramp time, payload power
VIN = 12 V - 13.2 V, VO = 0 V to 98% x VIN,
RLOAD = 1 kΩ, CLOAD = CL_PWR
1.31
2.01
ms
Output ramp time, mgmt power
VIN = 3.3 V - 3.465 V, VO = 0 V to 98% VIN,
RLOAD = 270, CLOAD = CL_MP
2.57
3.74
ms
(1)
µF
All voltages are with respect to the EVM GND node.
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Schematic Diagram
4
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Schematic Diagram
+
+
1
1
+
+
+
+
The schematic diagram for the TPS2459EVM is shown in Figure 1 and Figure 2.
Figure 1. TPS2459 Evaluation Module Schematic Diagram
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Schematic Diagram
+
+
+
1
3.3V @ 100mA
1
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Figure 2. TPS2459 Evaluation Module Schematic Diagram
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Test Set-up
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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, 12 VDC, 10 A minimum.
• Oscilloscope, 4 channel, with current probe.
• Personal computer, running Windows OS (95/98/2000/NT/XP), with USB port.
Connect the TPS2459EVM 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. Screen print labeling on the board
employs a naming convention in keeping with the nomenclature of the target ATCA™ and MicroTCA™
applications. The input 3.3-V supply is connected to the 3V3IN jack, and the 12-V supply is connected to
the 12VIN jack. A cross-reference of power rail labeling to standards naming is shown in Table 4.
Table 4. TPS2459EVM Output Net and Jack Naming
REF DES
12 -V POWER
SUPPLY
-
CONNECTOR LABEL
DESCRIPTION
J5
SLOT MP
AdvancedMCTM slot Management Power
J4
SLOT PWR
J6
GND
AdvancedMCTM slot Payload Power
Common load return node
TPS 2459 EVM -001
TM
ATCA
AdvancedMC
2
Controller with I
C
+
TM
12 VIN
J1
3 .3 - V POWER
SUPPLY
GND
J3
TP 4
CH 1
-
+
3 V3 IN
J2
TP 5
CH 2
OSCILLOSCOPE
TP 6
CH 3
CH 4
USB
PORT
J 53
USB
NOTES :
1.
Run separate leads from the GND jacks back to a common return point made near the
power supply output terminals
.
Figure 3. TPS2459EVM Set-up -- Non-Redundant System Connection
Note:
8
Run separate leads from the GND jacks back to a common return point made near the
power supply output terminals.
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Test Procedure
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6
Test Procedure
The following procedure can be used to verify functional operation of the EVM assembly upon receipt.
6.1
GUI Installation
In an ATCA™ or µTCA™ application, the TPS2459 device may work in conjunction with an Intelligent
Platform Management Controller (IPMC) device, which in turn is in communication with shelf
management. The Shelf Management Controller (ShMC) configures slot power parameters, and enables
and disables rails in response to a dynamically changing system configuration. With the EVM, this control
function is realized with the TPS2459 EVM GUI, running on a Windows PC, via the on-board USB-to- I2C
interface.
The TPS2459 EVM GUI installation file is available in WinZip format as a free download from the TI
website at www.ti.com. Alternatively, the GUI may be obtained on diskette or via e-mail by contacting your
local authorized TI representative. Save the GUI .zip file to the desired directory on the local hard drive of
the target PC. Open the .zip, and extract the installation executable. The installer filename will be of the
form “TPS2459-EVM-GUI-1.0.x.y.exe”, where x and y are minor build revision numbers.
Launch the installer utility by double-clicking the name/icon in an Explorer window, or click on Start → Run
… → Browse …, and navigate to the folder which the .exe was saved to. Select the .exe file, click Open,
then click OK. The welcome window of the GUI Setup Wizard shown in Figure 3 will be displayed. Clicking
Next will bring up the “License Agreement” window. Note that the I accept the agreement radial button
must be selected in order to proceed.
Follow the installation instructions in this and subsequent Wizard windows, selecting the desired options,
and clicking Next each time. At the “Ready to Install” screen, click Install if the displayed settings are O.K.
The installer will verify system requirements, install GUI files, and create the selected icons and program
groups. When the “Installation Complete” window of Figure 4 appears, click the Finish button to exit the
Setup Wizard.
6.2
Jumper Installation
The TPS2459EVM makes use of various jumpers for quick change of functional configurations. Verify the
module was supplied with jumpers installed across the following two-pin headers, or reconfigure settings
as necessary.
Table 5. Initial Jumper Settings
JUMPER
STATUS/POSITION
J7, J9
Installed
J11, J12, J13
Installed
J14, J15
Installed
J16
Installed
J51
Installed
J54
Pin 3 - Pin 4
J54
Pin 5 - Pin 6
On the EVM board, place all three ENABLES slide switches (bottom left corner of PCB) to the ENA
position.
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Test Procedure
6.3
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Check-Out Steps
If not already done, connect the EVM and test equipment as shown in Figure 3. Once the EVM USB
PORT is connected to the PC, the green LED D51 on the EVM should illuminate.
Turn on the 3.3-V power supply then turn on the 12.0-V supply. Verify all four STATUS LED’s are off.
On the host PC, launch the EVM GUI from either the Start menu item or desktop icon. The GUI start-up
screen of Figure 4 will appear. The TPS2459 EVM GUI auto-detects devices present on the I2C bus. The
address of the current device for all read and write transactions is displayed in the “at address:” field at the
top of the GUI screen. The address of the TPS2459EVM is selectable using the four position DIP switch,
S4, on the board.
In the GUI window, in the AMC STATUS panel, verify both the 12V PASS FET and BLK FET indicators
display an OFF status (with red background). The 12V OUT>PG Threshold indicator should also be RED.
In the AMC STATUS panel, verify the 3.3V PASS/BLK FET indicator displays an OFF status (with red
background). The VOUT GOOD indicator should also be RED. In the 12V CONTROL panel, click on the
FAULT TIME SET up arrow to maximize the displayed value at 15.5 mS. Click on the field with this value
displayed (background color turns blue). Repeat this process for the 3.3V FAULT TIME field, being sure to
click on the displayed 15.5 ms value.
Figure 4. GUI Initial Control and Status Display at Launch
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On the oscilloscope, set the Channel 1 amplifier scale to 2 V/div, and the Channel 2 amplifier to 5 V/div.
Position the Channel 1 trace a couple divisions down from the top of the scope screen, and position the
Channel 2 trace about a division below it. Set the current probe amplifier scale to 50 mA/div, and position
that trace towards the bottom of the scope screen. Set the scope to trigger on the rising edge of Channel
1, at a threshold of about 1.5 V. Set the time base to 500 µs or 1 ms/div, and set the trigger mode to
NORMAL.
In the GUI 3.3V CONTROL panel, click on the PASS/BLK FET button. In the STATUS panel, verify the
3.3V PASS/BLK FET and VOUT GOOD indicator colors change to GREEN. On the EVM board, the MP
PGD green STATUS LED should be illuminated.
On the oscilloscope, verify a waveform was obtained similar to the one shown in Figure 5. The total ramp
time of the Channel 1 waveform, from 0 V to about 3.2 V should be 2.6 0.6 ms. The peak amplitude of the
current pulse on Channel 4 should be 195 25 mA. A DVM can be used to verify the voltage at TP5 (with
respect to ground at TP6) is within 10 mV of the 3.3-V input supply voltage at 3V3IN (TP2).
SLOT_MP
2V/div
SLOT_PWR
5V/div
Input Current
(3V3IN)
50mA/div
Figure 5. Output Ramp-Up waveforms - SLOT_MP Rail.
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Test Procedure
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Remove the current probe from the 3.3-V supply lead, and clamp it across the 12VIN supply lead. Change
the Channel 4 amplifier scale to 2 A/div. Set the scope to trigger on Channel 2, and adjust the scope
trigger threshold to about 3 V.
In the GUI 12V CONTROL panel, click on the PASS FET button. In the STATUS panel, verify the 12V
PASS FET, BLK FET, and OUT>PG Threshold indicators turn GREEN. On the EVM board, the PWR PGD
green STATUS LED should be illuminated.
On the scope, verify a waveform was obtained similar to that shown in Figure 6. The total ramp time of the
Channel 2 trace, from 0 V to about 11.8 V should be 1.3 0.3 ms. Note that the extent of variance of the
12-V supply setting from a nominal 12.0 V affects this timing result. The average amplitude of the current
pulse (i.e., across the flattest part of the peak) on Channel 4 should be 7.9 0.8 A. A DVM can be used to
verify the voltage at TP4 (with respect to ground at TP6) is essentially the same as the input supply
potential at 12VIN.
SLOT_MP
2V/div
SLOT_PWR
5V/div
Input Current
(12VIN)
2A/div
Figure 6. Output Ramp-Up Waveforms - SLOT_PWR Rail.
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On the EVM board, set the PWR_OR enable slide switch to the DIS position. Use a DVM to verify the
voltage at TP4 (SLOT_PWR), with respect to ground at TP6, drops to 11.4 0.6 V. Return the PWR_OR
switch to the ENA position.
After completing the above steps, the TPS2459 EVM GUI display should appear as shown in Figure 7.
Note that all the STATUS indicators are green.
Figure 7. TPS2459 EVM GUI Display – Both Channels Successfully Powered
Set the scope trigger mode to AUTO to get a real-time display of the waveforms. On the EVM board, set
both the PWR and MP enable switches to the DIS position. The STATUS LED’s on the board should
extinguish. On the scope, verify the output voltage waveforms decay towards 0 V. In the GUI screen, the
12V PASS FET and BLK FET, and the 3.3V PASS/BLK FET indicators should display OFF, with the
indicator background color changing to red. Both PG indicators (12V and 3.3V) should change to RED.
Module operation as indicated in the above steps, along with obtaining the indicated GUI responses, is a
good indication of a fully functional board and correct set-up. This is also a good starting point for further
test and user evaluation of the device. Note that the two power channels must be reset by setting the
PASS FET and PASS/BLK FET CONTROL buttons to DISABLED (and returning the ENABLES switches
to the HI position), in order to enable subsequent power-up events.
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EVM Feature Details
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7
EVM Feature Details
7.1
Test Points
The TPS2459EVM contains numerous test points throughout the circuit for monitoring 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. However, due to potentially high loading conditions on the Payload Power output
(SLOT_PWR), multiple ground test points are provided to mitigate the measurement impact of return
current drops. Therefore, where appropriate, certain test points are paired in the table with the pertinent
reference point for meter return connections.
Table 6. Module Test Points
TEST
POINT
TP1
TP2
TP4
REF POINT
TP3
TP6
DESCRIPTION
12VIN
Input 12-V supply
3V3IN
Input 3.3-V supply
SLOT_PW AdvancedMC™ slot Payload Power, 12-V output
R
TP5
SLOT_MP
TP7
EN3
Active-high enable input to TPS2459 for the 3.3-V output rail
EN12
Active-high enable input to TPS2459 for the 12-V output rail
OREN
Active high enable of the 12-V (POWER) supply OR’ing function
TP8
TP14 or TP15
TP9
TP10
TP12
TP13
TP11
TP14
AdvancedMC™ slot Management Power, 3.3 V output
AdvancedMC™ slot 12-V load current sense voltage
PASS
BLK
TPS2459 12-V pass FET gate drive output
TPS4359 12-V block/OR’ing FET gate drive output
TP16
FLT12
TPS2459 active-low payload power (12 V) fault output
TP17
PG12
TPS2459 active-low payload power (12 V) powergood signal
FLT3
TPS2459 active-low mgmt power (3.3 V) fault output
PG3
TPS2459 active-low mgmt power (3.3 V) powergood signal
TP18
TP19
14
SIGNAL
TP14
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7.2
Connecting Loads to the TPS2459EVM
Both output power rails of the TPS2459EVM are 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. These capacitors are
intended to simulate input bulk capacitance which may be encountered at the front ends of
AdvancedMC™ modules plugged into the card slots of the target application. The AdvancedMC™
standard specifies the maximum allowable input capacitance on both Management and Payload Power
rails. The TPS2459EVM provides up to 150 µF capacitance on the Management power output, in
accordance with the AdvancedMC™ maximum limit. The EVM also provides up to 880 µF of capacitance
on the Payload Power rail, to approximate the 800-µF limit of the standard. In addition, low-level (mA) load
resistors can be jumpered in across each output and return. These limited load resistors are intended
primarily as reset devices between output ramp events, particularly when loaded with significant
capacitance.
Table 7 lists the EVM module’s output voltage nodes, and for each one indicates the associated jumper
reference designators, and the resultant load value with jumper installed.
Table 7. EVM On-Board Loads
OUTPUT RAIL
JUMPER
DEVICE
VALUE
SLOT_MP
J15
C11
150 F
J14
R6
270 Ω
J12
C7, C8
440 F
J13
C9, C10
440 F
J11
R5
1 kΩ
SLOT_PWR
Banana jacks are provided along the right-hand edge of the board for connection of the user’s optional
test loads. The output banana jack reference designators are listed in Table 4 along with the voltage rail
available at each one. Also, the net names are screen printed on the PCB, adjacent to their respective
jacks.
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EVM Feature Details
7.3
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2
I C Address Selection
Three input pins on the TPS2459 are assigned for setting the device I2C address: A2, A1 and A0. These
pins are tri-level inputs, allowing the device to be assigned any one of 27 unique address values. These
pins can be tied to ground potential to generate a logic low (L), pulled up to the VINT pin to generate a
logic high (H), or left open to float to a mid-range, no-connect (NC) level. On the EVM, address selection
is performed using switch S4. However, S4 is a common 4-position, 2-throw DIP switch. The switch is
wired into the circuit to pull the corresponding input pin to ground (L) when its DIP position is closed.
When a DIP position is open (O), the corresponding pin floats. Therefore, the address space for the EVM
is limited to an 8-value subset of the addresses recognized by the TPS2459. Table 8 specifies the valid
address space of the TPS2459EVM. Note that switch position S4-4 is not connected to any of the device
pins.
Table 8. TPS2459EVM Valid I2C Addresses
S3 Position
16
Device Address
A2
A1
A0
Ternary
Decimal
L
L
L
0003 + 223
0+8=8
L
L
O
0013 + 223
1+8=9
L
O
L
0103 + 223
3 + 8 = 11
L
O
O
0113 + 223
4 + 8 = 12
O
L
L
1003 + 223
9 + 8 = 17
O
L
O
1013 + 223
10 + 8 = 18
O
O
L
1103 + 223
12 + 8 = 20
O
O
O
1113 + 223
13 + 8 = 21
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7.4
Using the EVM GUI
The TPS2459 EVM GUI comes packaged in an installer script/license agreement utility. Follow the
instruction in Section 6.1 GUI Installation to Install the GUI to the target PC/laptop.
7.4.1
General GUI Information
Once installed, and depending on the install options selected by the user, the GUI can be launced either
from the TPS2459 EVM GUI program group in the Windows Start menu, or from the desk-top icon. At
start-up, the GUI automatically scans the legitimate address space of the TPS2459 for any devices on the
bus. If one or more addreses are discovered, the numerically lowest address is displayed in the “at
address:” field at the top of the GUI screen. This device becomes the current device for all I2C read and
write transactions. the GUI then polls the entire register set of this device, and populates the fields with the
current contents.
The GUI is divided into two main panels of information display, AMC and SYSTEM. AMC isaplays and
modifies rail-specific information of the AMC slot being contolled. It is in turn divided into two sub-panels:
CONTROL, user access to register control bits and fields of the selected device, and STATUS, status
information from the read-only registers of the TPS2459. Note that these settings and values are specific
to the 12-V or 3.3-V channel. The SYSTEM panel at the bottom of the GUI display provides access to
“higher level” functions, in that they apply to both channels of the device, or control GUI operation.
With a few exceptions, the GUI generally uses a two-color coding scheme to provide quick visual
feedback to the user of control and status information. A red button background color is used to indicate
DISABLED, in the case of control, or OFF or FAULT, in the case of status information. A green
background is used to signal ENABLED, ON or GOOD (i.e., no fault). Fields which do not have a binary
value set are coded with either a blue or grey button background. All the control and some status buttons
also feature a text label reflecting the current setting.
The GUI has two status update modes, automatic and manual. The current mode is indicated in the
REFRESH block in the lower-right corner of the SYSTEM panel. By default, the GUI starts up in AUTO
mode. To change to manual mode, check the "Manual Refresh" option under the Tools pull-down menu at
the top of the GUI window. Un-checking the "Manual Refresh" option will enter automatic mode. In manual
refresh mode, the REFRESH, AMC STATUS button displays UPDATE. Click the UPDATE button to obtain
a status read of the of the device whose address is displayed at the top of the window. Regardless of
mode, REFRESH only polls the three status registers of the device, registers 7, 8 and 9. A status read
action decodes the returned information from the TPS2459, and populates the GUI fields accordingly.
AUTO REFRESH polls the device at about a 1-Hz rate.
Write transactions to the current device are only triggered by a GUI button or field mouse click. Binary slot
(e.g., “AMC”) and SYSTEM control buttons (e.g., 12V PASS FET, 3.3V PASS/BLK FET) are click to
toggle. Numeric fields are click to send the displayed field contents. When a control button or field is
clicked on, the new register contents are formed from the value(s) currently displayed on the GUI screen,
and the new value is written to the correspond device register.
7.4.2
GUI Control Fields and Buttons
Table 9 lists the primary controls for turning the output rails on and off, in the AMC CONTROL panel.
Table 9. Output Rails Primary Controls
GUI BUTTON
DEVICE BIT
(Register[Bit])
12V PASS FET
R4[5]
Enable/disable 12-V pass (and block) FET’s.
12V BLK FET
R3[7]
Enable/disable 12-V block (i.e, OR’ing) FET
3.3V PASS/BLK
FET
R5[5]
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OPERATION
Enable/disable internal 3.3-V FET.
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Assembly Drawing and PCB Layout
8
www.ti.com
Assembly Drawing and PCB Layout
The top assembly drawing and individual PCB layers for the TPS2459EVM are shown in Figure 8 through
Figure 12.
Figure 8. Top Assembly
18
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Assembly Drawing and PCB Layout
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Figure 9. Top Layer Routing
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Assembly Drawing and PCB Layout
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Figure 10. Layer 2 Routing
20
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Assembly Drawing and PCB Layout
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Figure 11. Layer 3 Routing
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Assembly Drawing and PCB Layout
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Figure 12. Bottom Layer Routing
22
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List of Materials
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9
List of Materials
Table 10. TPS2459EVM List of Materials (1) (2) (3) (4) (5) (6) (7) (8) (9)
COUNT
Std.
1
C11
Capacitor, aluminum, SM, 10V, 20%, 150 uF, Case D
EEV-FK1A151P
Panasonic
2
C4, C5
Capacitor, ceramic, 25V, X7R, 20%, 1 uF, 0805
Std.
Std.
6
C51, C55, C56, Capacitor, ceramic, 25V, X7R, 20%, 0.1uF, 0603
C58, C60, C61
Std.
Std.
2
C52, C53
Capacitor, ceramic, 50V, C0G, 10%, 22pF, 0603
Std.
Std.
1
C54
Capacitor, ceramic, 100V, C0G, 5%, 1000pF, 0805
Std.
Std.
1
C57
Capacitor, tantalum, 16V, 20%, 1uF, 3216
293D105X0016A2T
Vishay
2
C59, C62
Capacitor, tantalum, 10V, 20%, 10uF, 3216
293D106X0010A2T
Vishay
1
C6
Capacitor, aluminum, SM, 25V, 20%, 47 uF, Case D
EEV-FK1E470P
Panasonic
4
C7, C8, C9,
C10
Capacitor, aluminum, SM, 25V, 20%, 220 uF, Case F
EEV-FK1E221P
Panasonic
D1
Diode, TVS, V(RWM) = 13.6 V, 600 W Pk., SMB
P6SMB16A
"ON Semior
Vishayor Littelfuse"
1
D2
Diode, Zener, 4.3 V, 500 mW max., SOD-123
BZT52C4V3
Diodes
1
D3
Diode, Schottky, 1A, 20V, SMA
B120
Diodes
D4, D5
Diode, LED, red/green, 1210, 45/35 mcd @ 20 mA,
0.126 x 0.106in.
LTST-C155KGJRKT
Lite-On
1
D51
Diode, LED, green, 20 mA, 30 mcd, SMD
SSF-LXH305GD-TR
Lumex
1
D52
Diode, Schottky, 1A, 30V, SMA
MBRA130
IR
1
D53
Diode, Zener, 7.5V, 3W, SMB
1SMB5922BT3
On Semi
Vishay
8
D54, D55, D56, Diode, TVS, low cap., V(RM) = 5 V, 300 W Pk., SOT-23 GL05T
D57, D58, D59,
D60, D61
6
J1, J2, J3, J4,
J5, J6
Jack, banana, non-ins., PC mount, TH
3267
Pomona
J17, J18
Header, PCB mnt., vert., 2 x 7, 100 mil spacing, 0.100
in. x 2 x 7
2514-6002UB
3M
J52
Header, 2 x 5-pin, 100-mil spacing, 0.100 in. x 2 x 5
PEC36DAAN
Sullins
J53
Connector, recpt, USB-B, mini, 5-pins, SMT, 0.354in. x
0.303in.
UX60-MB-5S8
Hirose
J54
Header, 2 x 3-pin, 100-mil spacing, 0.100 in. x 2 x 3
PEC36DAAN
Sullins
0
1
1
(8)
(9)
MFR
Std.
2
(7)
PART NUMBER
Capacitor, ceramic, 25V, X7R, 20%, 0.1 uF, 0805
2
(6)
DESCRIPTION
C1, C2, C3
1
(1)
(2)
(3)
(4)
(5)
REF DES
3
These assemblies are ESD sensitive, ESD precautions shall be observed.
These assemblies must be clean and free from flux and all contaminants. Use of no clean flux is not acceptable.
These assemblies must comply with workmanship standards IPC-A-610 Class 2.
"TH" package designation indicates "thru-hole" (leaded ) component.
Part number information is for reference only to further illustrate component characteristics; substitution of other mfgrs' part of
equal or better specification is permissible. Substitution NOT allowed on part numbers marked with double asterisk (**).
Double pound sign ('##') after part number indicates preferred device. Acceptable substitutes are listed afterwards, in
decreasing order of preference.
If banana jacks (J1 - J6) are supplied with solder lugs, dispose of lugs prior to installation on PCB. Solder lugs are NOT to be
installed on assembly.
Spacers to be installed at each of the thru-holes at the four corners of the PCB assembly, using nylon screws.
Shunts installed in accordance with manufacturing test procedure during test.
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23
List of Materials
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Table 10. TPS2459EVM List of Materials (continued)
COUNT
REF DES
PART NUMBER
MFR
PEC36SAAN
Sullins
Q1
Transistor, NFET, 30V, 100A, Rds(ON) < 5 mohm,
TDSON-8
"BSC016N03LSG##
or BSC022N03SG"
Infineon
Q2
Transistor, NFET, 30V, Rds(ON) < 20 mohm, TDSON-8 "BSC057N03LSG##
or
BSC050N03LSGor
BSC042N03LSGor
BSC022N03SGor
BSC016N03LSG"
Infineon
1
Q51
Transistor, NPN, 40 V, 500 mA, SOT-23
MMBT2222A
Fairchild
5
Q52, Q53,
Transistor, PFET, -50 V, 130 mA, Rds(ON) < 10 ohm
Q54, Q55, Q56 @V(gs) = 5 V, SOT-23
BSS84
Fairchild
R1
Resistor, metal strip, 1 W, 1%, 0.005, 2512
WSL25125L000FEA
Vishay-Dale
1
R2
Resistor, chip, 1/10 W, 1%, 422, 0805
Std
Std
1
R3
Resistor, chip, 1/10 W, 1%, 6.81K, 0805
Std
Std
1
R4
Resistor, chip, 1/10 W, 1%, 3.32K, 0805
Std
Std
1
R5
Resistor, chip, 1/2 W, 5%, 1K, 2010
Std
Std
3
R51, R52, R77
Resistor, chip, 1/16 W, 5%, 1.5K, 0603
Std.
Std.
1
R53
Resistor, chip, 1/16 W, 1%, 1.00M, 0603
Std.
Std.
2
R54, R80
Resistor, chip, 1/16 W, 5%, 15K, 0603
Std.
Std.
5
R55, R64, R65, Resistor, chip, 1/16 W, 5%, 100K, 0603
R66, R82
Std.
Std.
Std.
Std.
15
R56, R57,
R59, R60,
R62, R63,
R73, R74,
R76, R78,
1
R6
Resistor, chip, 1/10 W, 5%, 270, 0805
Std
Std
3
R67, R68, R70
Resistor, chip, 1/16 W, 5%, 2.2K, 0603
Std.
Std.
2
R69, R71
Resistor, chip, 1/16 W, 5%, 1K, 0603
Std.
Std.
0
R7
Resistor, chip, 1/10 W, 5%, 0805
Std
Std
4
R8, R9, R10,
R11
Resistor, chip, 1/10 W, 5%, 470, 0805
Std.
Std.
1
R81
Resistor, chip, 1/16 W, 5%, 200, 0603
Std.
Std.
3
S1, S2, S3
Switch, slide, SPDT, Rt. angle, 200-mA, TH
EG1213**
E-Switch
S4
Switch, DIP, 4 pos., raised rocker, 0.38 x 0.48 inch
"76SB04S(T)or
BD04"
"Grayhillor C&K
Switch"
11
1
1
1
1
24
DESCRIPTION
J7, J8, J9, J10, Header, 2-pin, 100-mil spacing, 0.100 in. x 2
J11, J12, J13,
J14, J15, J16,
J51
R58, Resistor, chip, 1/16 W, 5%, 33, 0603
R61,
R72,
R75,
R79
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Table 10. TPS2459EVM List of Materials (continued)
COUNT
REF DES
DESCRIPTION
PART NUMBER
MFR
5012
Keystone
15
TP1, TP2, TP4, Test point, white, 0.062 in. Hole, 5012, TH
TP5, TP7, TP8,
TP9, TP10,
TP11, TP12,
TP13, TP16,
TP17, TP18,
TP19
4
TP3, TP6,
TP14, TP15
Test point, black, 0.062 in. hole, 5011, TH
5011
Keystone
1
U1
Full-Featured AdvancedMC Slot Controller, QFN-32
TPS2459RHB**
Texas Instruments
1
U51
Serial EEPROM, 64K, 2.5-5.5V, 400 kHz Max., SO-8
24LC64I-SN
Microchip
1
U52
USB, General Purpose Device Controller , PQFP-64
TUSB3210PM**
Texas Instruments
1
U53
Micro-Power 150 mA LDO Regulator, 3.3 V, SOT-23-5
TPS76333DBV**
Texas Instruments
Y51
Crystal, 12-MHz, 20 pF, +/- 50 PPM@25C, 12MHZ,
0.185 x 0.532
CY12BPSMD
Crystek
1
1
N/A
PCB, FR-4, 4-layer, SMOBC, 4.63" x 4.85" x .062"
HPA403**
Any
11
N/A
Shunt, open-top
151-8000
Kobiconn
4
N/A
SPACER, nylon, hex, #6-32, 0.625"
14HTSP020
Eagle
4
N/A
SCREW, nylon, rnd hd, #6-32, 0.25"
010632R025
Eagle
1
N/A
USB cable, 5-pin, b-mini male to type A male, 2m
AK672M/2-2
Assman
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