Texas Instruments TPS25921XEVM-637 User Manual

User's Guide

SLUUB50–August 2014

TPS25921X-637EVM: Evaluation Module for TPS25921X

This user’s guide describes the evaluation module (EVM) for the TPS25921. The TPS25921X is an eFuse
with precision current limit, 4.5-V to 18-V supply voltage operation, programmable undervoltage,
overvoltage, overcurrent and inrush current protection features.

Contents

1 Introduction ................................................................................................................... 2

1.1 EVM Features....................................................................................................... 2

1.2 EVM Applications................................................................................................... 2

2 Description.................................................................................................................... 3

3 Schematics ................................................................................................................... 4

4 General Configurations ..................................................................................................... 5

4.1 Physical Access..................................................................................................... 5

4.2 Test Equipment and Setup ....................................................................................... 6

4.3 Test Setup and Procedures ....................................................................................... 7

5 EVM Assembly Drawings and Layout Guidelines...................................................................... 11

5.1 PCB Drawings ..................................................................................................... 11

6 Bill of Materials (BOM)..................................................................................................... 14

List of Figures

1 TPS25921X EVM Schematic............................................................................................... 4

2 EVM Setup with Test Equipment .......................................................................................... 7

3 J3= No Jumper Current Limit (1.5 A) Test Auto Retry (CH1) ........................................................ 10

4 J7 = No Jumper Current Limit (1.5A) Test with Latch (CH2)......................................................... 10

5 Top Side Placement ....................................................................................................... 11

6 Top Layer ................................................................................................................... 12

7 Bottom Layer................................................................................................................ 13

List of Tables

1 TPS25921X EVM Options and Settings .................................................................................. 3

2 Input and Output Connector Functionality................................................................................ 5

3 Test Points Description ..................................................................................................... 5

4 Jumper and LEDs Descriptions............................................................................................ 6

5 Power Supply Setting for PWR637........................................................................................ 8

6 Default Jumper Setting for PWR637 ...................................................................................... 8

7 PWR637 DMM Readings at Different Test Points....................................................................... 8

8 PWR637 Oscilloscope Setting for Current Limit Test................................................................... 9

9 PWR637 Jumper Settings for Current Limits ............................................................................ 9

10 TPS25921XEVM-637 Bill of Materials .................................................................................. 14

SLUUB50–August 2014 TPS25921X-637EVM: Evaluation Module for TPS25921X

Submit Documentation Feedback

Copyright © 2014, Texas Instruments Incorporated

1

Introduction

1 Introduction

The TPS25921XEVM allows reference circuit evaluation of TI's TPS25921X devices. The TPS25921X
devices are available with both latching and auto-retry operation.

1.1 EVM Features

• General TPS25921XEVM features include:

– 4.5-V to 18.0-V (TYP) operation

• CH1 Rising input voltage turn-on threshold – 4.5 V (TYP)

• CH1 rising input voltage turn-off threshold (OVP) – 17 V (TYP)

• CH1 Falling Input voltage turn-off threshold (UVLO) –4.2 V (TYP)

• CH2 Rising Input voltage turn-on threshold – 4.5 V (TYP)

• CH2 Rising Input voltage turn-off threshold (OVP) – 17 V (TYP)

• CH2 Falling Input voltage turn-off threshold (UVLO) – 4.2 V (TYP)

– 0.5-A to 1.5-A programmable current limit
– Programmable undervoltage lockout/overvoltage
– Programmable VOUT slew rate
– Latched-off TPS25921LD
– Auto-retry TPS25921AD

• Push button RESET signal

• On-board transorb is for overvoltage input protection

• Common diode at output prevents a negative spike when the load is removed

www.ti.com

1.2 EVM Applications

• Set-top boxes, DVD and Blu-ray™ units

• HDD and SSD drives

• Thunderbolt host ports

• Hot-swap boards

• PCI/PCIe cards

• White goods/appliances

• Servers

Blu-ray is a trademark of Blu-ray Disc Association.
All other trademarks are the property of their respective owners.

2

TPS25921X-637EVM: Evaluation Module for TPS25921X SLUUB50–August 2014

Copyright © 2014, Texas Instruments Incorporated

Submit Documentation Feedback

www.ti.com

2 Description

The TPS25921XEVM-637 enables full evaluation of the TPS25921X devices. The EVM supports two
versions (Auto-Retry and Latched) of the devices on two Channels (CH1 and CH2, respectively). Input
power is applied at J1 (CH1) and, J5 (CH2) while J2 and (CH1)/J6 (CH2) provide the output connection to
the load. Refer to the schematic in Figure 1, and EVM test setup in Figure 2.

D1/C1(CH1), D5/C9 (CH2) provide input protection for the TPS25921X (U1 and U2, respectively) while
D2/C2-C6 (CH1), D6/C10-C14 (CH2) provide output protection and inrush current demand from the load.
S1 and S2 allow U1 and U2, respectively, to be RESET or disabled. A power good (PG) indicator is
provided by D3, D7 for CH1 and CH2, respectively, and circuit faults can be observed with D4. Scaled
channel current can be monitored at TP10 and TP20 with a scale factor of approximately 1 V/A.

Description

Table 1. TPS25921X EVM Options and Settings

Part Number EVM Function OVP

TPS25921XE 4.5 V–18 Auto-

VM-637 V retry

eFuse with

Precision Current 4.2 V 4.2 V 17 V 0.5 A 1.5 A 1:00 AM Latched

Limit

VIN

Range

UVLO Current Limit Fault Response

CH1 CH2 Lo Setting CH1 CH2

No Middle

Jumper Setting

SLUUB50–August 2014 TPS25921X-637EVM: Evaluation Module for TPS25921X

Submit Documentation Feedback

Copyright © 2014, Texas Instruments Incorporated

3

S1

4.7µF

C5

4.7µF

C3

0.1µF

C2

TP6
VIN1

TP8

TP5
VOUT1

TP3
EN1

TP10
ILIM1

TP7

TP1

1000pF

C7

D1

COMMON GROUND

VIN1

FAULT1

1
2
3

J3

TP4
FLTb1

1000pF

C8

0.47µF

C1

VOUT-1=4.5V-18V

IOUT-1=0.4A -1.6A

Red

D3

D2

J2

J1

4.7µF

C4

TP2

GND

1

SS

2

EN/UVLO

3

VIN4OUT

5

FLTb

6

ILIM

7

OVP

8

U1

TPS25921AD

100k

R1

12.1k

R6

24.9k

R3

DNP

95.3k

R2

45.3k

R4

S2

34.8k

R14

4.7µF

C13

4.7µF

C11

0.1µF

C10

TP19
VIN2

TP11

TP18
VOUT2

TP16
EN2

TP20
ILIM2

TP13

TP12

1000pF

C15

D5

COMMON GROUND

VIN2

FAULT2

45.3k

R15

1
2
3

J7

TP17
FLTb2

1000pF

C16

100k

R11

0.47µF

C9

95.3k

R12

VIN=4.5V-18V

IIN=0.4A-1.6A

VOUT-2=4.5V-18V

IOUT-2=0.4A -1.6A

Red

D7

D6

J6

J5

24.9k

R13

DNP

4.7µF

C12

TP21

GND

1

SS

2

EN/UVLO

3

VIN4OUT

5

FLTb

6

ILIM

7

OVP

8

U2

TPS25921LD

VOUT2

123

J4

330µF

C14

330µF

C6

34.8k

R5

12.1k

R16

24.3k

R17

24.3k

R7

0.1

R10

TP14

P-LOAD

P-LOAD-RTN

ON

TP15

I-LOAD

TP9

Green

D4

100k

R9

10.0k

R8

VOUT1

VIN=4.5V-18V

IIN=0.4A-1.6A

TP22
OVP1

TP23
OVP2

1000pF

C17

1000pF

C18

VOUT1VOUT2

4

7,8

1,2,3

5,6,

Q1

Schematics

3 Schematics

Figure 1 illustrates the schematic for this EVM.

4

TPS25921X-637EVM: Evaluation Module for TPS25921X SLUUB50–August 2014

www.ti.com

Figure 1. TPS25921X EVM Schematic

Copyright © 2014, Texas Instruments Incorporated

Submit Documentation Feedback

www.ti.com

4 General Configurations

This section describes the physical access, test equipment and set up, and the test setup and procedures
for this EVM.

4.1 Physical Access

Table 2 lists the TPS25921XEVM-637 input and output connector functionality.

Table 2. Input and Output Connector Functionality

Connector Label Description

J1 CH1 VIN1(+), GND(–) CH1 Input power supply to the EVM
J2 VOUT1(+),GND(–) CH1 Output power from the EVM
J5 CH2 VIN2(+), GND(–) CH2 Input power supply to the EVM
J6 VOUT2(+),GND(–) CH2 Output power from the EVM

Table 3 describes the test point availability.

Channel Test Points Label Description

CH1 TP6 VIN1 CH1 Input power supply to the EVM

TP3 EN1 CH1 Active high enable and under voltage input
TP22 OVP1 CH1, Active high overvoltage input
TP10 IMON1 CH1 Current monitor. Load current ≈1 × voltage on TP10

TP5 VOUT1 CH1 Output from the EVM

TP4 FLTb1 CH1, Fault test point

TP1 GND GND

TP2 GND GND

TP7 GND GND

TP8 GND GND

CH2 TP19 VIN2 CH2 Input power supply to the EVM

TP16 EN2 CH2 Active high enable and under voltage input
TP23 OVP2 CH2, Active high overvoltage input
TP20 IMON2 CH2 Current monitor. Load current ≈1 × voltage on TP20
TP18 VOUT2 CH2 Output from the EVM
TP20 FLTb2 CH2, Fault test point
TP11 GND GND
TP12 GND GND
TP13 GND GND
TP21 GND GND

General Configurations

Table 3. Test Points Description

SLUUB50–August 2014 TPS25921X-637EVM: Evaluation Module for TPS25921X

Submit Documentation Feedback

Copyright © 2014, Texas Instruments Incorporated

5

General Configurations

Table 4 describes the jumper functionality.

Jumper Label Description

J3 0.5 A−1.0 A CH1 current setting (no jumper sets 1.5 A)
J7 0.5 A−1.0 A CH2 current setting (no jumper sets 1.5 A)

D3 (Red) D2 CH1 circuit fault indicator. LED turns on when the internal MOSFET is disabled due to a fault

D7 (Red) D3 CH2 circuit fault indicator. LED turns on when the internal MOSFET is disabled due to a fault

D4 (Green) D4

condition such as overload, short circuit, or undervoltage and so forth.

condition such as overload, short circuit, or undervoltage and so forth.
CH1 and CH2 power good indicator.

This LED turns on from:
VOUT1, if the jumper is installed in position 2-3
VOUT2, if the jumper is installed in position 1-2

4.2 Test Equipment and Setup

4.2.1 Power Supplies

One adjustable power supply: 0- to 20-V output, 0- to 3-A output current limit.

4.2.2 Meters

One DMM minimum needed and may require more, if simultaneous measurements are needed.

www.ti.com

Table 4. Jumper and LEDs Descriptions

4.2.3 Oscilloscope

A DPO2024 or Lecroy 424 oscilloscope or equivalent, three 10X voltage probes, and a DC current probe

4.2.4 Loads

One resistive load or equivalent which can tolerate up to 3 ADC load at 12 V and are capable of the
output short.

6

TPS25921X-637EVM: Evaluation Module for TPS25921X SLUUB50–August 2014

Copyright © 2014, Texas Instruments Incorporated

Submit Documentation Feedback

+ -

J6

J2

D1

Positive

Load

Negative

J5

Negative

Power

Supply

Positive

Negative

Power

Supply

Positive

J1

TP

13

TP

12

TP

7

TP

1

U2

U1

DUT

PWR637

Positive

Load

Negative

Voltmeter

PRINT
HELP

ALPHA

SHIFT

ENTER

RUN

DGERF

I

AJBKC

L

7M8N9

O

DGDGD

G

D

G T3U

0V.WX

Y

Z

TAB

% UTILIZATION

HUB/MAU NIC

2

BNC

4Mb/s

Voltmeter

PRINT
HELP

ALPHA

SHIFT

ENTER

RUN

DGERF

I

AJBKC

L

7M8N9

O

DGDGD

G

D

G T3U

0V.WX

Y

Z

TAB

% UTILIZATION

HUB/MAU NIC

2

BNC

4Mb/s

Oscilloscope

Texas

Instruments

S2

S1

D4

D7

D3

D5

www.ti.com

4.3 Test Setup and Procedures

Figure 2 shows a typical test setup for the TPS25921XEVM. Connect J3/J8 to the power supply and J2/J7

to the load.

General Configurations

Figure 2. EVM Setup with Test Equipment

SLUUB50–August 2014 TPS25921X-637EVM: Evaluation Module for TPS25921X

Submit Documentation Feedback

Copyright © 2014, Texas Instruments Incorporated

7

General Configurations

4.3.1 Test Procedure

Use the following steps to test the EVM:

1. Set the power-supply output VIN to 0 V.

2. Turn on the power supply and set the output voltage and current limit according to Table 5.

www.ti.com

Table 5. Power Supply Setting for PWR637

EVM Channel Voltage Set Point

PWR637 12 ±0.2 VDC 3 A ±0.25 ADC

CH1(J1)
CH2(J5)

Power Supply Current

Limit

3. Turn off the power supply. Hook up CH1 and CH2 of the PWR637 assembly as shown in Figure 2.

4. The default EVM jumper setting is shown in Table 6.

Table 6. Default Jumper Setting for PWR637

J3 (CH1) J7 (CH2) J4 (VOUT1)

2-3 2-3 2-3

5. CH1 and CH2 can be tested one by one for PWR637.

6. Ensure that the output load is disabled and the power supply is set properly for the design under test
(DUT). Connect the negative probe of DMM to TP1, TP7, TP12, or TP13 (GND). Turn on the power
supply, and verify that the voltages shown in Table 7 are obtained.

Table 7. PWR637 DMM Readings at Different Test Points

Voltage Test on (CH1) Measured Voltage Reading Measured Voltage Reading

VIN1 (TP6) 12 ±0.5 VDC VIN2 (TP19) 12 ±0.5 VDC

EN1 (TP3) 3.84 ±0.3 VDC EN2 (TP16) 3.84 ±0.3 VDC
OVP1 (TP22) 0.988 ±0.2 VDC OVP2 (TP23) 0.988 ±0.2VDC
VOUT1 (TP5) 12 ±0.5 VDC VOUT2 (TP16) 12 ±0.5 VDC

FLTb1 (TP4) 10.6 ±0.6 VDC FLTb2 (TP17) 10.6 ±0.6VDC

0.451 ±0.1 VDC (for J3 jumper in 2-3)

ILIM1(TP10) 1 ±0.1 VDC (for J3 jumper in 1-2 ) ILIM2(TP20) 1 ±0.1 VDC (for J7 jumper in 1-2 )

1.43 ±0.15 VDC (for no jumper in J3)

Voltage Test on

(CH2)

0.451 ±0.1 VDC (for J7 jumper in
2-3)

1.43 ±0.15 VDC (for no jumper in

J7)

4.3.1.1 CH1 (J1)

Use the following steps to test CH1 (J1).

1. Press the EVM RST switch, S1, and verify that the voltage at VOUT1 (TP5) starts falling slowly below
12 V and the FLTb1 red LED (D3) turns ON. Release S1.

2. Reduce the input voltage on VIN1 and monitor VOUT1. Verify that VOUT1 (TP5) starts falling and is
fully turned off when VIN1 (TP6) reaches 4.2 V (M 0.3 V). Verify that the FLTb1 red LED (D3) turns
ON.

3. Adjust the power supply voltage to 12 V.

4. Increase the input voltage on VIN1 and monitor VOUT1. Verify that VOUT1 (TP5) starts increasing and
then turns off when VIN1 (TP6) exceeds 17 V (M 1 V). Verify that the FLTb1 red LED (D3) turns ON.

5. Adjust the power supply voltage to 12 V.

6. Turn off the power supply.

8

TPS25921X-637EVM: Evaluation Module for TPS25921X SLUUB50–August 2014

Copyright © 2014, Texas Instruments Incorporated

Submit Documentation Feedback

www.ti.com

4.3.1.2 For CH2 (J5)

Use the following steps to test CH2 (J5).

1. Press the EVM RST switch, S2 and verify that the voltage at VOUT2 (TP16) starts falling slowly below
12 V and the red FLTb2 LED (D7) turns ON. Release S2.

2. Reduce the input voltage on VIN2 and monitor VOUT2. Verify that VOUT2 (TP16) starts falling and is
fully turned off when VIN2 (TP15) reaches 4.2 V (±0.3 V). Verify that FLTb2 red LED (D7) turns ON.

3. Adjust the power supply voltage to 12 V.

4. Increase the input voltage on VIN2 and monitor VOUT2. Verify that VOUT2 (TP16) starts increasing
and then turns off when VIN2 (TP19) exceeds 17 V (±1 V). Verify that the FLTb2 red LED (D7) turns
ON.

5. Adjust the power supply voltage to 12 V.

6. Turn off the power supply.

4.3.1.3 Current Limit Test

Use the following steps to conduct the current limit test.

1. Verify all three current limits (CH1 and CH2, with only 1 channel powered at a time) and verify the latch
and auto-retry feature. Setup the oscilloscope as shown in Table 8.

General Configurations

Table 8. PWR637 Oscilloscope Setting for Current Limit Test

Oscilloscope Setting CH1 Probe Points CH2 Probe Points

Channel 1 = 5 V/div TP5 = VOUT1 TP18 = VOUT2
Channel 2 = 5 V/div TP6 = VIN1 TP19 = VIN2
Channel 4 = 1 A/div Input current into J1 +ve wire Input current into J5 +ve wire
Trigger source = Channel 4
Trigger level = 0.6 A ±0.1 A
Trigger polarity = +ve
Trigger mode = Single sequence
Time base 200 ms/div 40 ms/div

(1)

If an electronic load is used, ensure that the output load is set to constant resistance mode and not constant current mode.

(2)

Measuring current limit values on the oscilloscope can easily cause 8% error from anticipated values listed in Table 8.

(1)(2)

2. The jumper setting for the different current limit test is shown in Table 9.

Table 9. PWR637 Jumper Settings for Current Limits

Jumper Position

J3 (CH1) J7 (CH2)

2-3 2-3 1.0 A ±0.08 A
1-2 1-2 0.5 A ±0.04 A

No jumper No jumper 1.50 A ±0.12 A

Load Current Limit

3. Set the output load at 5.0 Ω ±0.5Ω on CH1 and then enable the load. Turn on the VIN1 power supply
and verify that input current is limited, as per the setting in the Table 9. Verify the device is in auto-retry
mode and that the FLTb1 RED LED (D3) turns on and off as shown in Figure 3. The level of the
current pulse should match with the load current limit (based on the respective jumper setting), as
shown in Table 9.

SLUUB50–August 2014 TPS25921X-637EVM: Evaluation Module for TPS25921X

Submit Documentation Feedback

Copyright © 2014, Texas Instruments Incorporated

9

General Configurations

4. Set the output load at 5.0 Ω ±0.5Ω on CH2 and then enable the load. Turn on the VIN2 power supply
and verify that input/output current is limited as per the setting in Table 9. Verify the device is in
latched-off mode and that the FLTb2 RED LED (D7) turns ON as shown in Figure 4. The level of the
current pulse should match with the load current limit (based on the respective jumper setting) as
shown in Table 9.

www.ti.com

Figure 3. J3= No Jumper Current Limit (1.5 A) Test Auto Retry (CH1)

10

Figure 4. J7 = No Jumper Current Limit (1.5A) Test with Latch (CH2)

5. Set the input power supply to zero volts and disconnect all equipment from the DUT.

TPS25921X-637EVM: Evaluation Module for TPS25921X SLUUB50–August 2014

Copyright © 2014, Texas Instruments Incorporated

Submit Documentation Feedback

www.ti.com

5 EVM Assembly Drawings and Layout Guidelines

5.1 PCB Drawings

Figure 5 through Figure 7 show component placement and layout of the EVM.

EVM Assembly Drawings and Layout Guidelines

Figure 5. Top Side Placement

SLUUB50–August 2014 TPS25921X-637EVM: Evaluation Module for TPS25921X

Submit Documentation Feedback

Copyright © 2014, Texas Instruments Incorporated

11

EVM Assembly Drawings and Layout Guidelines

www.ti.com

Figure 6. Top Layer

12

TPS25921X-637EVM: Evaluation Module for TPS25921X SLUUB50–August 2014

Copyright © 2014, Texas Instruments Incorporated

Submit Documentation Feedback

www.ti.com

EVM Assembly Drawings and Layout Guidelines

Figure 7. Bottom Layer

SLUUB50–August 2014 TPS25921X-637EVM: Evaluation Module for TPS25921X

Submit Documentation Feedback

Copyright © 2014, Texas Instruments Incorporated

13

Bill of Materials (BOM)

6 Bill of Materials (BOM)

Table 10 lists the BOM for this EVM.

www.ti.com

Table 10. TPS25921XEVM-637 Bill of Materials

Designator Qty Value Description PackageReference PartNumber Manufacturer Alternate Alternate

PCB 1 Printed Circuit Board PWR637 Any - ­C1, C9 2 0.47uF CAP, CERM, 0.47uF, 50V, +/-10%, X7R, 1206 1206 12065C474KAT2A AVX
C2, C10 2 0.1uF CAP, CERM, 0.1uF, 25V, +/-10%, X7R, 0805 0805 08053C104KAT2A AVX
C3, C4, C5, C11, C12, C13 6 4.7uF CAP, CERM, 4.7uF, 25V, +/-10%, X5R, 0805 0805 C2012X5R1E475K125AB TDK
C6, C14 2 330uF CAP, AL, 330uF, 25V, +/-20%, 0.16 ohm, SMD HA0 EMZA250ADA331MHA0G Nippon Chemi-Con
C7, C8, C15, C16 4 1000pF CAP, CERM, 1000pF, 50V, +/-10%, X7R, 0805 0805 08055C102KAT2A AVX
D1, D5 2 18V Diode, TVS, Uni, 18V, 600W, SMB SMB SMBJ18A-13-F Diodes Inc. - ­D2, D6 2 20V Diode, Schottky, 20V, 3A, SMA SMA B320A-13-F Diodes Inc.
D3, D7 2 Red LED, Red, SMD Red LED, 1.6x0.8x0.8mm LTST-C190CKT Lite-On
D4 1 Green LED, Green, SMD 1.6x0.8x0.8mm LTST-C190GKT Lite-On
H1, H2, H3, H4 4 Bumpon, Cylindrical, 0.312 X 0.200, Black Black Bumpon SJ61A1 3M
J1, J2, J5, J6 4 Terminal Block, 2x1, 5.08mm, TH 10.16x15.2x9mm 282841-2 TE Connectivity
J3, J4, J7 3 1x3 Header, TH, 100mil, 1x3, Gold plated, 230 mil above PBC03SAAN PBC03SAAN Sullins Connector Equivalent Any

LBL1 1 Thermal Transfer Printable Labels, 0.650" W x 0.200" H - PCB Label 0.650"H x 0.200"W THT-14-423-10 Brady

Q1 1 30V MOSFET, N-CH, 30V, 100A, SON 5x6mm SON 5x6mm CSD17301Q5A Texas Instruments None
R1, R11 2 100k RES, 100k ohm, 1%, 0.125W, 0805 0805 CRCW0805100KFKEA Vishay-Dale
R2, R12 2 95.3k RES, 95.3k ohm, 1%, 0.125W, 0805 0805 CRCW080595K3FKEA Vishay-Dale
R4, R15 2 45.3k RES, 45.3k ohm, 1%, 0.125W, 0805 0805 CRCW080545K3FKEA Vishay-Dale
R5, R14 2 34.8k RES, 34.8k ohm, 1%, 0.125W, 0805 0805 CRCW080534K8FKEA Vishay-Dale
R6, R16 2 12.1k RES, 12.1k ohm, 1%, 0.125W, 0805 0805 CRCW080512K1FKEA Vishay-Dale
R7, R17 2 10.0k RES, 10.0k ohm, 1%, 0.125W, 0805 0805 CRCW080510K0FKEA Vishay-Dale
R8 1 10.0k RES, 10.0k ohm, 1%, 0.125W, 0805 0805 CRCW080510K0FKEA Vishay-Dale
R9 1 10.0k RES, 10.0k ohm, 1%, 0.125W, 0805 0805 CRCW080510K0FKEA Vishay-Dale
R10 1 0.1 RES, 0.1E, 1%, 0.5W, 2010 2010 WSL2010R1000FEA Vishay-Dale Equivalent Any
S1, S2 2 Switch, Push Button, SMD 2.9x2x3.9mm SMD SKRKAEE010 Alps Equivalent Any
SH-J3, SH-J4, SH-J7 3 1x2 Shunt, 100mil, Gold plated, Black Shunt 969102-0000-DA 3M SNT-100-BK-G Samtec
TP1, TP7, TP12, TP13 4 SMT Test Point, SMT, Compact Testpoint_Keystone_Compact 5016 Keystone Equivalent Any
TP2, TP8, TP11, TP14, TP21 5 Black Test Point, TH, Multipurpose, Black Keystone5011 5011 Keystone Equivalent Any
TP3, TP4, TP9, TP10, TP16, 9 White Test Point, TH, Multipurpose, White Keystone5012 5012 Keystone Equivalent Any

TP17, TP20, TP22, TP23
TP5, TP6, TP18, TP19 4 Red Test Point, TH, Multipurpose, Red Keystone5010 5010 Keystone Equivalent Any
TP15 1 Orange Test Point, TH, Multipurpose, Orange Keystone5013 5013 Keystone Equivalent Any
U1 1 4.5-18V eFuse with Precision Current Limit, D0008A D0008A TPS25921AD Texas Instruments None
U2 1 4.5-18V eFuse with Precision Current Limit, D0008A D0008A TPS25921LD Texas Instruments None

insulator Solutions

10,000 per roll

(1)

PartNumber Manufacturer

(1)

Unless otherwise noted in the Alternate Part Number and/or Alternate Manufacturer columns, all parts may be substituted with equivalents.

14

TPS25921X-637EVM: Evaluation Module for TPS25921X SLUUB50–August 2014

Submit Documentation Feedback

Copyright © 2014, Texas Instruments Incorporated

www.ti.com

Bill of Materials (BOM)

Table 10. TPS25921XEVM-637 Bill of Materials

Designator Qty Value Description PackageReference PartNumber Manufacturer Alternate Alternate

C17, C18 2 1000pF CAP, CERM, 1000pF, 50V, +/-10%, X7R, 0805 0805 08055C102KAT2A AVX
FID1, FID2, FID3 0 Fiducial mark. There is nothing to buy or mount. Fiducial N/A N/A
R3, R13 0 24.9k RES, 24.9k ohm, 1%, 0.125W, 0805 0805 CRCW080524K9FKEA Vishay-Dale

(1)

(continued)

PartNumber Manufacturer

SLUUB50–August 2014 TPS25921X-637EVM: Evaluation Module for TPS25921X

Submit Documentation Feedback

Copyright © 2014, Texas Instruments Incorporated

15

ADDITIONAL TERMS AND CONDITIONS, WARNINGS, RESTRICTIONS, AND DISCLAIMERS FOR

EVALUATION MODULES

Texas Instruments Incorporated (TI) markets, sells, and loans all evaluation boards, kits, and/or modules (EVMs) pursuant to, and user
expressly acknowledges, represents, and agrees, and takes sole responsibility and risk with respect to, the following:

1. User agrees and acknowledges that EVMs are intended to be handled and used for feasibility evaluation only in laboratory and/or
development environments. Notwithstanding the foregoing, in certain instances, TI makes certain EVMs available to users that do not
handle and use EVMs solely for feasibility evaluation only in laboratory and/or development environments, but may use EVMs in a
hobbyist environment. All EVMs made available to hobbyist users are FCC certified, as applicable. Hobbyist users acknowledge, agree,
and shall comply with all applicable terms, conditions, warnings, and restrictions in this document and are subject to the disclaimer and
indemnity provisions included in this document.

2. Unless otherwise indicated, EVMs are not finished products and not intended for consumer use. EVMs are intended solely for use by
technically qualified electronics experts who are familiar with the dangers and application risks associated with handling electrical
mechanical components, systems, and subsystems.

3. User agrees that EVMs shall not be used as, or incorporated into, all or any part of a finished product.

4. User agrees and acknowledges that certain EVMs may not be designed or manufactured by TI.

5. User must read the user's guide and all other documentation accompanying EVMs, including without limitation any warning or
restriction notices, prior to handling and/or using EVMs. Such notices contain important safety information related to, for example,
temperatures and voltages. For additional information on TI's environmental and/or safety programs, please visit www.ti.com/esh or
contact TI.

6. User assumes all responsibility, obligation, and any corresponding liability for proper and safe handling and use of EVMs.

7. Should any EVM not meet the specifications indicated in the user’s guide or other documentation accompanying such EVM, the EVM
may be returned to TI within 30 days from the date of delivery for a full refund. THE FOREGOING LIMITED WARRANTY IS THE
EXCLUSIVE WARRANTY MADE BY TI TO USER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR
STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. TI SHALL
NOT BE LIABLE TO USER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES RELATED TO THE
HANDLING OR USE OF ANY EVM.

8. No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine, process, or
combination in which EVMs might be or are used. TI currently deals with a variety of customers, and therefore TI’s arrangement with
the user is not exclusive. TI assumes no liability for applications assistance, customer product design, software performance, or
infringement of patents or services with respect to the handling or use of EVMs.

9. User assumes sole responsibility to determine whether EVMs may be subject to any applicable federal, state, or local laws and
regulatory requirements (including but not limited to U.S. Food and Drug Administration regulations, if applicable) related to its handling
and use of EVMs and, if applicable, compliance in all respects with such laws and regulations.

10. User has sole responsibility to ensure the safety of any activities to be conducted by it and its employees, affiliates, contractors or
designees, with respect to handling and using EVMs. Further, user is responsible to ensure that any interfaces (electronic and/or
mechanical) between EVMs and any human body are designed with suitable isolation and means to safely limit accessible leakage
currents to minimize the risk of electrical shock hazard.

11. User shall employ reasonable safeguards to ensure that user’s use of EVMs will not result in any property damage, injury or death,
even if EVMs should fail to perform as described or expected.

12. User shall be solely responsible for proper disposal and recycling of EVMs consistent with all applicable federal, state, and local
requirements.

Certain Instructions. User shall operate EVMs within TI’s recommended specifications and environmental considerations per the user’s
guide, accompanying documentation, and any other applicable requirements. Exceeding the specified ratings (including but not limited to
input and output voltage, current, power, and environmental ranges) for EVMs may cause property damage, personal injury or death. If
there are questions concerning these ratings, user should contact a TI field representative prior to connecting interface electronics including
input power and intended loads. Any loads applied outside of the specified output range may result in unintended and/or inaccurate
operation and/or possible permanent damage to the EVM and/or interface electronics. Please consult the applicable 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 60°C as long as the input and output are maintained
at a normal ambient operating temperature. These components include but are not limited to linear regulators, switching transistors, pass
transistors, and current sense resistors which can be identified using EVMs’ schematics located in the applicable EVM user's guide. When
placing measurement probes near EVMs during normal operation, please be aware that EVMs may become very warm. As with all
electronic evaluation tools, only qualified personnel knowledgeable in electronic measurement and diagnostics normally found in
development environments should use EVMs.

Agreement to Defend, Indemnify and Hold Harmless. User agrees to defend, indemnify, and hold TI, its directors, officers, employees,
agents, representatives, affiliates, licensors and their representatives harmless from and against any and all claims, damages, losses,
expenses, costs and liabilities (collectively, "Claims") arising out of, or in connection with, any handling and/or use of EVMs. User’s
indemnity shall apply whether Claims arise under law of tort or contract or any other legal theory, and even if EVMs fail to perform as
described or expected.

Safety-Critical or Life-Critical Applications. If user intends to use EVMs in evaluations of safety critical applications (such as life support),
and a failure of a TI product considered for purchase by user for use in user’s product would reasonably be expected to cause severe
personal injury or death such as devices which are classified as FDA Class III or similar classification, then user must specifically notify TI
of such intent and enter into a separate Assurance and Indemnity Agreement.

RADIO FREQUENCY REGULATORY COMPLIANCE INFORMATION FOR EVALUATION MODULES

Texas Instruments Incorporated (TI) evaluation boards, kits, and/or modules (EVMs) and/or accompanying hardware that is marketed, sold,
or loaned to users may or may not be subject to radio frequency regulations in specific countries.

General Statement for EVMs Not Including a Radio

For EVMs not including a radio and not subject to the U.S. Federal Communications Commission (FCC) or Industry Canada (IC)
regulations, TI intends EVMs to be used only for engineering development, demonstration, or evaluation purposes. EVMs are not finished
products typically fit for general consumer use. EVMs may nonetheless generate, use, or radiate radio frequency energy, but have not been
tested for compliance with the limits of computing devices pursuant to part 15 of FCC or the ICES-003 rules. Operation of such EVMs may
cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may
be required to correct this interference.

General Statement for EVMs including a radio

User Power/Frequency Use Obligations: For EVMs including a radio, the radio included in such EVMs is intended for development and/or
professional use only in legally allocated frequency and power limits. Any use of radio frequencies and/or power availability in such EVMs
and their development application(s) must comply with local laws governing radio spectrum allocation and power limits for such EVMs. It is
the user’s sole responsibility to only operate this radio in legally acceptable frequency space and within legally mandated power limitations.
Any exceptions to this are strictly prohibited and unauthorized by TI unless user has obtained appropriate experimental and/or development
licenses from local regulatory authorities, which is the sole responsibility of the user, including its acceptable authorization.

U.S. Federal Communications Commission Compliance
For EVMs Annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant
Caution

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause
harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Changes or modifications could void the user's authority to operate the equipment.

FCC Interference Statement for Class A EVM devices

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to
cause harmful interference in which case the user will be required to correct the interference at its own expense.

FCC Interference Statement for Class B EVM devices

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

Industry Canada Compliance (English)
For EVMs Annotated as IC – INDUSTRY CANADA Compliant:

This Class A or B digital apparatus complies with Canadian ICES-003.
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the

equipment.

Concerning EVMs Including Radio Transmitters

This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this
device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired
operation of the device.

Concerning EVMs Including Detachable Antennas

Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain
approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should
be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication.

This radio transmitter has been approved by Industry Canada to operate with the antenna types listed in the user guide with the maximum
permissible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a gain
greater than the maximum gain indicated for that type, are strictly prohibited for use with this device.

Canada Industry Canada Compliance (French)

Cet appareil numérique de la classe A ou B est conforme à la norme NMB-003 du Canada
Les changements ou les modifications pas expressément approuvés par la partie responsable de la conformité ont pu vider l’autorité de

l'utilisateur pour actionner l'équipement.

Concernant les EVMs avec appareils radio

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est
autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout
brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

Concernant les EVMs avec antennes détachables

Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain
maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à
l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente
(p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante.

Le présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le manuel
d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne non inclus dans
cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de l'émetteur.

Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265

Copyright © 2014, Texas Instruments Incorporated

spacer

Important Notice for Users of EVMs Considered “Radio Frequency Products” in Japan

EVMs entering Japan are NOT certified by TI as conforming to Technical Regulations of Radio Law of Japan.

If user uses EVMs in Japan, user is required by Radio Law of Japan to follow the instructions below with respect to EVMs:

1. Use EVMs in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and
Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry’s Rule for Enforcement of Radio Law of
Japan,

2. Use EVMs only after user obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to EVMs, or

3. Use of EVMs only after user obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan with respect
to EVMs. Also, do not transfer EVMs, unless user gives the same notice above to the transferee. Please note that if user does not
follow the instructions above, user will be subject to penalties of Radio Law of Japan.

http://www.tij.co.jp

【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 本開発キットは技術基準適合証明を受けておりません。 本製品の
ご使用に際しては、電波法遵守のため、以下のいずれかの措置を取っていただく必要がありますのでご注意ください。

1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用いただく。

2. 実験局の免許を取得後ご使用いただく。

3. 技術基準適合証明を取得後ご使用いただく。。

なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします

上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。

日本テキサス・インスツルメンツ株式会社
東京都新宿区西新宿６丁目２４番１号
西新宿三井ビル

http://www.tij.co.jp

Texas Instruments Japan Limited

(address) 24-1, Nishi-Shinjuku 6 chome, Shinjuku-ku, Tokyo, Japan

IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other
changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest
issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and
complete. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale
supplied at the time of order acknowledgment.

TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms
and conditions of sale of semiconductor products. Testing and other quality control techniques are used to the extent TI deems necessary
to support this warranty. Except where mandated by applicable law, testing of all parameters of each component is not necessarily
performed.

TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and
applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide
adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or
other intellectual property right relating to any combination, machine, or process in which TI components or services are used. Information
published by TI regarding third-party products or services does not constitute a license to use such products or services or a warranty or
endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the
third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration
and is accompanied by all associated warranties, conditions, limitations, and notices. TI is not responsible or liable for such altered
documentation. Information of third parties may be subject to additional restrictions.

Resale of TI components or services with statements different from or beyond the parameters stated by TI for that component or service
voids all express and any implied warranties for the associated TI component or service and is an unfair and deceptive business practice.
TI is not responsible or liable for any such statements.

Buyer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety-related requirements
concerning its products, and any use of TI components in its applications, notwithstanding any applications-related information or support
that may be provided by TI. Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which
anticipate dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause
harm and take appropriate remedial actions. Buyer will fully indemnify TI and its representatives against any damages arising out of the use
of any TI components in safety-critical applications.

In some cases, TI components may be promoted specifically to facilitate safety-related applications. With such components, TI’s goal is to
help enable customers to design and create their own end-product solutions that meet applicable functional safety standards and
requirements. Nonetheless, such components are subject to these terms.

No TI components are authorized for use in FDA Class III (or similar life-critical medical equipment) unless authorized officers of the parties
have executed a special agreement specifically governing such use.

Only those TI components which TI has specifically designated as military grade or “enhanced plastic” are designed and intended for use in
military/aerospace applications or environments. Buyer acknowledges and agrees that any military or aerospace use of TI components
which have not been so designated is solely at the Buyer's risk, and that Buyer is solely responsible for compliance with all legal and
regulatory requirements in connection with such use.

TI has specifically designated certain components as meeting ISO/TS16949 requirements, mainly for automotive use. In any case of use of
non-designated products, TI will not be responsible for any failure to meet ISO/TS16949.

Products Applications

Audio www.ti.com/audio Automotive and Transportation www.ti.com/automotive
Amplifiers amplifier.ti.com Communications and Telecom www.ti.com/communications
Data Converters dataconverter.ti.com Computers and Peripherals www.ti.com/computers
DLP® Products www.dlp.com Consumer Electronics www.ti.com/consumer-apps
DSP dsp.ti.com Energy and Lighting www.ti.com/energy
Clocks and Timers www.ti.com/clocks Industrial www.ti.com/industrial
Interface interface.ti.com Medical www.ti.com/medical
Logic logic.ti.com Security www.ti.com/security
Power Mgmt power.ti.com Space, Avionics and Defense www.ti.com/space-avionics-defense
Microcontrollers microcontroller.ti.com Video and Imaging www.ti.com/video
RFID www.ti-rfid.com
OMAP Applications Processors www.ti.com/omap TI E2E Community e2e.ti.com
Wireless Connectivity www.ti.com/wirelessconnectivity

Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265

Copyright © 2014, Texas Instruments Incorporated

Mouser Electronics

Authorized Distributor

Click to View Pricing, Inventory, Delivery & Lifecycle Information:

Texas Instruments:
TPS25921EVM-637