User's Guide
SLVU464A – July 2011 – Revised October 2019
UCD90SEQ48EVM-560:
48-Pin Sequencer Development Board
This user's guide describes the 48-pin Sequencer Development Board – UCD90SEQ48EVM-560. This
development board contains a 48-pin socket and interface circuitry to support the UCD9090 and
UCD9090A.
1
2
3
4
5
6
Contents
Description .................................................................................................................... 2
1.1
General Features ................................................................................................... 2
1.2
Sequencer Applications ............................................................................................ 2
Quick Start .................................................................................................................... 2
2.1
Test Setup ........................................................................................................... 2
UCD90SEQ48EVM-560 GUI Setup ....................................................................................... 3
3.1
UCD90SEQ48EVM-560 GUI Installation ....................................................................... 3
3.2
UCD90SEQ48EVM-560 GUI Operation ......................................................................... 4
General-Use Features ...................................................................................................... 6
4.1
EVM Input/Output Connectors and Switches ................................................................... 6
4.2
EVM Test Jumpers ................................................................................................. 7
4.3
EVM Test Points .................................................................................................... 7
4.4
EVM Status LEDs................................................................................................... 8
Description .................................................................................................................... 8
5.1
Communication Interface .......................................................................................... 8
5.2
Input Power .......................................................................................................... 9
5.3
Status LEDs ......................................................................................................... 9
5.4
Analog Monitor Inputs .............................................................................................. 9
EVM Schematic, Assembly Drawings, Layout Guidelines, and Bill of Materials ................................... 10
6.1
Schematic .......................................................................................................... 10
6.2
Printed-Circuit Board Drawings .................................................................................. 12
6.3
Bill of Materials .................................................................................................... 16
List of Figures
1
Typical Test Setup ........................................................................................................... 3
2
UCD90SEQ48EVM-560 Schematic, Sheet 1 of 2 ..................................................................... 10
3
UCD90SEQ48EVM-560 Schematic, Sheet 2 of 2 ..................................................................... 11
4
Top-Side Layout/Routing .................................................................................................. 12
5
Layer-2 Routing
6
7
............................................................................................................
Layer-3 Routing ............................................................................................................
Bottom-Side Placement/Routing .........................................................................................
13
14
15
List of Tables
1
HPA560A Bill of Materials
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UCD90SEQ48EVM-560: 48-Pin Sequencer Development Board
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1
Description
1
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Description
The UCD90SEQ48EVM-560 allows the Texas Instruments UCD9090 and UCD9090A 48-pin sequencer to
be installed into the onboard socket for evaluation. Access to all of the user input/output (I/O) is provided
via strip connectors for integration into complex systems using clip-type jumper wires.
This development board also allows direct PMBus (power management bus) communication with the
sequencer via an onboard USB interface. This interface allows direct control of and feedback from the
sequencer when using the TI Fusion Digital Power Designer graphical user interface (GUI).
1.1
General Features
•
•
•
•
•
•
•
1.2
USB port powered or power with single 5-V supply
JTAG programming port for in-socket device configuration
Serial port for advanced debugging
Status LEDs on all GPIO
Strip connector I/O access
USB-PMBus interface for communication
UCD9090/UCD9090A (in socket) and mini-USB cable provided
Sequencer Applications
•
•
•
•
Industrial/ATE
Telecommunications and networking equipment
Servers and storage systems
Any system requiring sequencing and monitoring of multiple power rails
2
Quick Start
2.1
Test Setup
Figure 1 shows a typical test setup for the UCD90SEQ48EVM-560. All that is required is a personal
computer (PC) with a USB port and the TI Fusion Digital Power Designer GUI. The USB-EVM cable is
provided with the evaluation module (EVM) and is used for EVM power.
When installing the UCD9090/UCD9090A sequence devices into XU1, ensure that the device pin 1 is
oriented as shown in Figure 1.
2
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UCD90SEQ48EVM-560 GUI Setup
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5V INPUT
+
-
J5
ADDRESS
J1
J13
5V
Power
Supply
J10
LED ENABLE
J17
J18
RESET
J22
J16
r J15
r J24
J6
J19
J23
J27
D24
USB
JTAG
J20
J21
USB CABLE
J25
XU1 with
UCD9090
Installed
S1
HPA560
J11
J12
RS232
PC with GUI
Figure 1. Typical Test Setup
3
UCD90SEQ48EVM-560 GUI Setup
3.1
UCD90SEQ48EVM-560 GUI Installation
The UCD90SEQ48EVM-560 uses the TI Fusion Digital Power Designer GUI which may be downloaded
from the following Web site:
http://focus.ti.com/docs/toolsw/folders/print/fusion_digital_power_designer.html
Click the link for the official release for sequencers to start the download. Place the TI Fusion Digital
Power Designer zip file in a known location on the PC. Unzip the TI Fusion Digital Power Designer zip file.
Double-click the unzipped TI Fusion Digital Power Designer .exe file. Proceed through the installation by
accepting the installer prompts and the license agreement. Accept the GUI-suggested default PC
installation locations to complete the install.
Once the GUI completes the installation, the program starts. The first time the GUI is launched on a
particular PC, the user may be prompted to select a device. Choose UCD9xxx. Afterwards, the GUI may
be closed.
Note that the TI Fusion Digital Power Designer version 1.7.165 was used for the GUI figures in this
document.
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UCD90SEQ48EVM-560 GUI Setup
3.2
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UCD90SEQ48EVM-560 GUI Operation
The EVM comes preloaded with a 10-rail default project that illuminates the onboard GPIO LEDs at power
up. Export the default project to a file on the PC prior to making changes. To do this, go to the File menu
and select Save Project As …, then select a project file name and location.
3.2.1
Launch TI Fusion Digital Power Designer
Navigate to the location where the Fusion GUI is installed (Start → All Programs → Texas Instruments
Fusion Digital Power Designer → Fusion Digital Power Designer), and start it. A window similar to the
following illustration appears.
4
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UCD90SEQ48EVM-560 GUI Setup
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Most of the GUI control features are available from the Configure window. Monitor and Status information
is available from the respective buttons on the GUI lower left. A typical Monitor window follows.
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5
General-Use Features
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4
General-Use Features
4.1
EVM Input/Output Connectors and Switches
Connector/
Switch
Label
Description
J1
+5V POWER
5-Vdc jack
J5
+5V
5-V screw jack
J27
USB IN
USB input connector for communication and EVM power
J12
RS232
Serial debug connector
J6
JTAG
JTAG connector
XU1
Onboard socket for the 64-pin sequencer
PBRESET
Pushbutton reset
XU1
S1
6
J18
Sequencer I/O strip connector. Pin name silkscreened on EVM
J20
Sequencer I/O strip connector. Pin name silkscreened on EVM
J21
Sequencer I/O strip connector. Pin name silkscreened on EVM
J22
Sequencer I/O strip connector. Pin name silkscreened on EVM
J19
Sequencer I/O strip connector. Pin name silkscreened on EVM
J17
Sequencer I/O strip connector. Pin name silkscreened on EVM
J11
Sequencer I/O strip connector. Pin name silkscreened on EVM.
J10
Sequencer I/O strip connector. Pin name silkscreened on EVM.
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General-Use Features
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4.2
EVM Test Jumpers
The EVM is equipped with shunts on the jumper positions identified in the Default Pin Position shown in
the following table. Shunts can be moved and removed as required during use.
4.3
Jumper
Default Pin
Position
Label
J2
1-2
LDO 3.3V
J23
1-2
SCL
EEPROM SCL. For EVM manufacturing only.
J24
1-2
SDA
EEPROM SDA. For EVM manufacturing only.
Description
LDO 3.3V. Install for complete EVM operation. Remove to allow power access to
only the sequencer device.
J9
1-2
GPI1
General-purpose input #1. Install shunt to allow status LED operation.
J14
1-2
GPI2
General-purpose input #2. Install shunt to allow status LED operation.
J13
1-2,7-8
PM ADDR
PMBus address (default to 101). Remove shunts for JTAG operation at address 126.
J7
TCK
JTAG TCK. Install shunt when JTAG operation is desired.
J3
TDI
JTAG TDI. Install shunt when JTAG operation is desired.
J8
TDO
JTAG TDO. Install shunt when JTAG operation is desired.
J4
TMS
JTAG TMS. Install shunt when JTAG operation is desired.
J25
1-2
LEDEN
Status LED enable. Install to enable non-PWM GPIO status LEDs. Remove to
disable status LED loading on the GPIOs.
J26
1-2, 3-4, 5-6, 7-8,
9-10, 11-12, 1314, 15-16
LEDEN
Status LED enable for FPWMs (GPIO5-GPIO12). Install to enable FPWM GPIO
status LEDs. Remove to disable status LED loading on the FPWM GPIOs.
J15
GPIO14/TX
Debug port TX (used for debug)
J16
GPIO15/RX
Debug port RX (not used during debug)
EVM Test Points
TP
Color
Label
TP2
WHT
LDO 3.3V
Description
TP1
WHT
V33D
TP5
WHT
ADDR0
ADDRSENS0. EVM PMBus address.
TP6
ORG
ADDR1
ADDRSENS1. EVM PMBus address.
TP3
WHT
RIN
Receive input from terminal device.
TP4
WHT
TOUT
Transmit output to terminal device.
TP7
SM-SLV
GND
Surface mount GND
TP8
SM-SLV
GND
Surface mount GND
TP9
SM-SLV
GND
Surface mount GND (bottom)
TP10
SM-SLV
GND
Surface mount GND
TP11
SM-SLV
GND
Surface mount GND
TP12
SM-SLV
GND
Surface mount GND (bottom)
LDO 3.3V. EVM 3.3V
V33D. Sequencer 3.3V.
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General-Use Features
4.4
5
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EVM Status LEDs
LED
Color
Label
Description
D4
RED
5V ON
5VBUS ON indicator
D3
RED
V33D
Sequencer power ON
D10
RED
ALERT
D13
GREEN
CTRL
PMBus Control
D24
GREEN
USB ON
USB attached
D5
AMBER
GPI1
GPI1 input HIGH
D6
AMBER
GPI2
GPI2 input HIGH
D7
GREEN
GPIO1
GPIO1 HIGH
D8
GREEN
GPIO2
GPIO2 HIGH
D9
GREEN
GPIO3
GPIO3 HIGH
D11
GREEN
GPIO4
GPIO4 HIGH
D12
GREEN
GPIO13
GPIO13 HIGH
D14
GREEN
GPIO14/TX
GPIO14 HIGH
D15
GREEN
GPIO15/RX
GPIO15 HIGH
D16
GREEN
GPIO16
GPIO16 HIGH
D17
GREEN
GPIO17
GPIO17 HIGH
D18
GREEN
GPIO18
GPIO18 HIGH
D19
GREEN
GPIO19
GPIO19 HIGH
D20
GREEN
GPIO20
GPIO20 HIGH
D21
GREEN
GPIO21
GPIO21 HIGH
D22
AMBER
GPIO5
GPIO5 HIGH
D23
AMBER
GPIO6
GPIO6 HIGH
D25
AMBER
GPIO7
GPIO7 HIGH
D26
AMBER
GPIO8
GPIO8 HIGH
D27
AMBER
GPIO9
GPIO9 HIGH
D28
AMBER
GPIO10
GPIO10 HIGH
D30
AMBER
GPIO11
GPIO11 HIGH
D32
AMBER
GPIO12
GPIO12 HIGH
PMBus Alert
Description
The following paragraphs describe the UCD90SEQ48EVM-560 functionality and operation.
5.1
Communication Interface
Several communication interfaces to the sequencer are provided on the EVM.
5.1.1
USB Interface
An onboard USB-to-PMBus interface is provided through the USB Input (J27) connector. D24 provides
USB attach status. The EVM can be fully operated from USB input power only.
5.1.2
PMBus
Standard PMBus interface is provided to the sequencer from the onboard USB-PMBus circuitry. PMBus
addressing is set using the J13 jumper block for ADDRSENS1 and ADDRSENS0, respectively. ADDRx =
8 and ADDRx = 5 positions for each are provided. The EVM comes with PMBus address set to 101
decimal.
PMBus Address (decimal) = 12 x ADDR1 + ADDR0 jumper block setting.
8
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Description
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5.1.3
JTAG
Standard JTAG programming interface is provided to the sequencer through the J6 connector. The
sequencer address must be set to 126 decimal to invoke sequencer JTAG operation. Install shunts at J3,
J4, J7, and J8, and remove the shunts on J13 to use the JTAG interface.
5.1.4
RS232 Debug
A serial debug port is provided to the sequencer through the J12 connector. Install J15 when using the
RS232 interface. For debug, the terminal listens only to the sequencer.
5.2
Input Power
The 5-Vdc EVM input power is provided through the USB interface. For stand-alone operation without a
USB source, EVM input power can be provided at J1 (standard dc jack) or J5 (screw jack). A wall or
laptop adapter with 200-mA capability and 2.5-mm I.D. × 5.5-mm O.D. × 9.5-mm dc jack can power the
EVM.
5.3
Status LEDs
Visual status information for the GPI, GPIO, and PMBus signals (control and alert) is provided. Logic high
at GPI1-4 or GPIO1-21 illuminates the associated LED. The GPIO status LEDs can be enabled (J25 shunt
installed) or disabled (J25 shunt not installed) to prevent the LED bias from affecting the logic state of the
GPIO signal during device reset. In addition, the sequencer PWM signals PWM1, PWM2, and FPWM1FPWM8 can be disconnected from the status LEDs through the use of shunts when used for voltage
margining.
5.4
Analog Monitor Inputs
The sequencer monitor inputs can be used to monitor offboard voltages. Each monitor input has a 4-kΩ
resistor to ground. Ensure that the external source does not exceed 2.5 V.
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EVM Schematic, Assembly Drawings, Layout Guidelines, and Bill of Materials
6
EVM Schematic, Assembly Drawings, Layout Guidelines, and Bill of Materials
6.1
Schematic
www.ti.com
2
2
2
1
2
ADDRSENS0=5
ADDRSENS1=5
ADDRSENS0=8
ADDRSENS1=8
3
4
1
2
3
4
Figure 2. UCD90SEQ48EVM-560 Schematic, Sheet 1 of 2
10
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ALERT
CTRL
Figure 3. UCD90SEQ48EVM-560 Schematic, Sheet 2 of 2
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EVM Schematic, Assembly Drawings, Layout Guidelines, and Bill of Materials
6.2
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Printed-Circuit Board Drawings
TEXAS
INSTRUMENTS
Figure 4. Top-Side Layout/Routing
12
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EVM Schematic, Assembly Drawings, Layout Guidelines, and Bill of Materials
Figure 5. Layer-2 Routing
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EVM Schematic, Assembly Drawings, Layout Guidelines, and Bill of Materials
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Figure 6. Layer-3 Routing
14
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Figure 7. Bottom-Side Placement/Routing
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EVM Schematic, Assembly Drawings, Layout Guidelines, and Bill of Materials
6.3
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Bill of Materials
Table 1. HPA560A Bill of Materials
16
Count
RefDes
Value
Description
Size
Part Number
2
C1, C13
4.7 µF
Capacitor, Ceramic, 10V, X5R, 20%
0805
Std
1
C12
0.01 µF
Capacitor, Ceramic, 50V, X7R, 10%
0603
Std
1
C17
1000 pF
Capacitor, Ceramic, X7R, 16V, 10%
0603
Std
2
C19, C20
22 pF
Capacitor, Ceramic, 50V, C0G, 10%
0603
Std.
1
C2
100 µF
Capacitor, Tantalum, 10V, 10%
6032
TAJC107K010R
1
C21
1000 pF
Capacitor, Ceramic, 100V, C0G, 5%
0805
Std.
1
C25
1 µF
Capacitor, Tantalum, 16V, 20%
3216
293D105X0016A2T
3
C3, C26, C28
10 µF
Capacitor, Tantalum, 10V, 20%
3216
293D106X0010A2T
17
C4, C5, C6, C7, C8, C9,
C10, C11, C14, C15,
C16, C18, C22, C23,
C24, C27, C29
0.1 µF
Capacitor, Ceramic, X7R, 16V, 10%
0603
Std
1
D1
B340A
Diode, Schottky, 3A, 40V
SMA
B340A-13-F
1
D2
TLV1117-33CDCY
IC, 3.3 V, 800mA LDO Voltage Regulator
SOT-223
TLV1117-33CDCY
1
D24
SSF-LXH305GD-TR
Diode, LED, Green, 20 mA, 30 mcd
SMD
SSF-LXH305GD-TR
1
D29
MBRA130LT3G
Diode, Schottky, 1A, 30V
SMA
MBRA130LT3G
3
D3, D4, D10
SML-LXT0805SRW-TR
Diode, LED, Red, 100 mA
0805
SML-LXT0805SRW-TR
1
D31
7.5V
Diode, Zener, 7.5V, 3W
SMB
1SMB5922BT3G
10
D5, D6, D22, D23, D25,
D26, D27, D28, D30, D32
LN1471Y
Diode, LED, Amber, 20-mA, 0.4-mcd
0.114 X 0.049 inch
LN1471YTR
14
D7, D8, D9, D11, D12,
D13, D14, D15, D16,
D17, D18, D19, D20, D21
LN1371G
Diode, LED, Green, 20-mA, 0.9-mcd
SMD
LN1371G
1
FB1
220 Ohm
Ferrite Bead, 2A, 0.050 m-ohm
0805
BLM21PG221SN
1
J1
RAPC712X
Connector, DC Jack, Pin dia.2.5mm, Shell dia 5.5mm
0.57 x 0.35 inch
RAPC712X
8
J10, J11, J17, J18, J19,
J20, J21, J22
PEC08SAAN
Header, Male 8-pin, 100mil spacing,
0.100 inch x 8
PEC08SAAN
1
J12
182-009-213R171
Connector, 9-pin D, Right Angle, Female
1.213 x 0.510
182-009-213R171
1
J13
PEC04DAAN
Header, Male 2x4-pin, 100mil spacing
0.20 x 0.40 inch
PEC04DAAN
12
J2, J3, J4, J7, J8, J9, J14, PEC02SAAN
J15, J16, J23, J24, J25
Header, Male 2-pin, 100mil spacing,
0.100 inch x 2
PEC02SAAN
1
J26
PEC08DAAN
Header, Male 2x8 pin, 100mil spacing
0.100 inch X2X8
PEC08DAAN
1
J27
UX60-MB-5ST
Connector, Recpt, USB-B, Mini, 5-pins, SMT
0.354in. x 0.303in.
UX60-MB-5S8
1
J5
ED120/2DS
Terminal Block, 2-pin, 15-A, 5.1mm
0.40 x 0.35 inch
ED120/2DS
1
J6
PEC07DAAN
Header, Male 2x7 pin, 100mil spacing
0.100 inch x 2X7
PEC07DAAN
1
Q1
FDN5630
MOSFET, N-ch, 60-V,1.7-A, 100-milliohm
SSOT3
FDN5630
5
Q2, Q3, Q4, Q5, Q6
BSS84
Transistor, PFET, -50 V, 130 mA, Rds(ON) < 10 ohm at V(gs) = 5 V
SOT-23
BSS84
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Table 1. HPA560A Bill of Materials (continued)
Count
RefDes
Value
Description
Size
Part Number
1
Q7
MMBT2222A
Transistor, NPN, 40 V, 500 mA
SOT-23
MMBT2222A
1
R1
590
Resistor, Chip, 1/10W, 1%
0805
Std
24
R12,
R36,
R40,
R50,
R69,
R82,
332
Resistor, Chip, 1/10W, 1%
0805
Std
8
R13, R15, R48, R58,
R60, R61, R62, R84
100K
Resistor, Chip, 1/16W, 1%
0603
Std
2
R16, R18
90.9K
Resistor, Chip, 1/16W, 1%
0603
Std
2
R17, R19
41.2K
Resistor, Chip, 1/16W, 1%
0603
Std
2
R2, R79
200
Resistor, Chip, 1/16W, 5%
0603
Std
11
R20, R21, R22, R24,
R25, R26, R28, R29,
R30, R31, R32
4.02K
Resistor, Chip, 1/16W, 1%
0603
Std
1
R23
20K
Resistor, Chip, 1/16W, 1%
0603
Std
4
R27, R33, R65, R67
1K
Resistor, Chip, 1/16W, 1%
0603
Std
7
R3, R4, R5, R7, R8, R11,
R41
10K
Resistor, Chip, 1/16W, 1%
0603
Std
1
R43
300
Resistor, Chip, 1/10W, 1%
0805
Std
1
R44
1.00M
Resistor, Chip, 1/16 W, 1%
0603
Std.
3
R45, R46, R74
1.5K
Resistor, Chip, 1/16 W, 5%
0603
Std
11
R52, R53, R55, R56,
R68, R70, R72, R73,
R75, R76, R78
33
Resistor, Chip, 1/16W, 5%
0603
Std
2
R59, R81
15K
Resistor, Chip, 1/16 W, 5%
0603
Std.
2
R6, R9
0
Resistor, Chip, 1/16W, 1%
0603
Std
0
R10
0
Resistor, Chip, 1/16W, 1%
0603
Std
3
R63, R64, R66
2.2K
Resistor, Chip, 1/16 W, 5%
0603
Std.
1
RT1
5 Ohms
Inrush current limiter, 4.7A, 0.11 ohms
0.180 X 0.550
CL-150
1
S1
KT11P2JM34LFS
Switch, SPST, PB Momentary, Sealed Washable
0.245 X 0.251
KT11P2JM34LFS
5
TP1, TP2, TP3, TP4, TP5
5012
Test Point, White, Thru Hole
0.125 x 0.125 inch
5012
1
TP6
5013
Test Point, Orange, Thru Hole
0.125 x 0.125 inch
5013
6
TP7, TP8, TP9, TP10,
TP11, TP12
5016
Test Point, SM, 0.150 x 0.090""
0.185 x 0.135
5016
1
U1
SN74LVC2G04DBV
IC, Dual Schmitt-Trigger Inverter
SOT23-6
SN74LVC2G04DBV
1
U2
SN75C3221DBR
IC, RS-232 Transceivers with AutoShutdown
SSOP-16
SN75C3221DBR
1
U3
24LC64-I/SN
IC, Serial EEPROM, 64K, 2.5-5.5V, 400 kHz Max.
SO-8
24LC64-I/SN
1
U4
TUSB3210PM
IC, USB, General Purpose Device Controller
PQFP-64
TUSB3210PM**
1
U5
TPS76333DBV
IC, Micro-Power 100 mA LDO Regulator
SOT23-5
TPS76333DBV
R14,
R37,
R42,
R51,
R71,
R83,
R34,
R38,
R47,
R54,
R77,
R85,
R35,
R39,
R49,
R57,
R80,
R86
SLVU464A – July 2011 – Revised October 2019
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UCD90SEQ48EVM-560: 48-Pin Sequencer Development Board
Copyright © 2011–2019, Texas Instruments Incorporated
17
EVM Schematic, Assembly Drawings, Layout Guidelines, and Bill of Materials
www.ti.com
Table 1. HPA560A Bill of Materials (continued)
Count
RefDes
Value
Description
Size
Part Number
1
XU1
48QN50S17070
Socket, 48 pin TH, QFN Pack, Clam-shell
1.08 x 0.800 inch
48QN50S17070
1
Y1
12MHZ
Crystal, 12-MHz, 20 pF, ±50 PPM@25C
0.185 x 0.532
CY12BPSMD
1
NA
UCD9090ARGZ
IC, Digital PWM System Controller
PFC-48
UCD9090ARGZ
SJ-5003
BUMPON HEMISPHERE .44X.20 BLACK
4
16
18
Shunt, Black
SJ-5003
100-mil
929950-00
1
--
PCB, 5 In x 4 In x 0.062 In
HPA560
1
N/A
USB Cable, 5-pin, B-Mini Male to Type A Male, 2m
AK672M/2-2-R
UCD90SEQ48EVM-560: 48-Pin Sequencer Development Board
SLVU464A – July 2011 – Revised October 2019
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Copyright © 2011–2019, Texas Instruments Incorporated
Revision History
www.ti.com
Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Original (July 2011) to A Revision ........................................................................................................... Page
•
•
Added device number to include UCD9090A throughout ............................................................................ 2
Changed "UCD9090RGZ" to ""UCD9090ARGZ" in Table 1 ....................................................................... 18
SLVU464A – July 2011 – Revised October 2019
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Copyright © 2011–2019, Texas Instruments Incorporated
Revision History
19
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EVM Warnings and Restrictions
It is important to operate this EVM within the input voltage range of 0 V to 5.5 V and the output voltage range of 0 V to 3.8 V .
Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions
concerning the input range, please contact a TI field representative prior to connecting the input power.
Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the EVM.
Please consult the EVM User's Guide prior to connecting any load to the EVM output. If there is uncertainty as to the load specification,
please contact a TI field representative.
During normal operation, some circuit components may have case temperatures greater than 40°C. The EVM is designed to operate
properly with certain components above 70°C as long as the input and output ranges are maintained. These components include but are
not limited to linear regulators, switching transistors, pass transistors, and current sense resistors. These types of devices can be identified
using the EVM schematic located in the EVM User's Guide. When placing measurement probes near these devices during operation,
please be aware that these devices may be very warm to the touch.
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