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4.2 Bill of Materials

Table 4-1

 presents the bill of materials for the TPS54233EVM-373.

Table 4-1. TPS54233EVM-373 Bill of Materials

Count

RefDes

Value

Description

Size

Part Number

MFR

0

C1

Open

Capacitor, Ceramic

1206

1

C2

10 μF

Capacitor, Ceramic, 25V, X5R, 10%

1206

GRM31CR61E106KA
12

muRata

0

C3

Open

Capacitor, Ceramic

0603

1

C4

0.1 μF

Capacitor, Ceramic, 16V, X7R, 10%

0603

Std

Std

1

C5

0.015 μF

Capacitor, Ceramic, 16V, X7R, 10%

0603

Std

Std

2

C6, C7

220 pF

Capacitor, Ceramic, 16V, X7R, 10%

0603

Std

Std

1

C8

470 μF

Capacitor, Aluminum, 10V, ±20%

0.328 x 0.328 
inch

EEVFK1A471P

Panasonic

1

D1

B230A

Diode, Schottky, 2A, 40V

SMA

B240A

Diodes Inc

2

J1, J4

ED1514

Terminal Block, 2-pin, 6-A, 3,5mm

0.27 × 0.25 
inch

ED1514

OST

2

J2, J3

PTC36SA
AN

Header, 2-pin, 100mil spacing, (36-pin strip)

0.100 × 2

PTC36SAAN

1

L1

15 μH

Inductor, SMT, 3.7A, 41 mΩ

0.402 × 0.394 
inch

MSS1038-273NL

Coilcraft

1

R1

332k

Resistor, Chip, 1/16W, 1%

0603

Std

Std

1

R2

68.1k

Resistor, Chip, 1/16W, 1%

0603

Std

Std

1

R3

30.9k

Resistor, Chip, 1/16W, 1%

0603

Std

Std

1

R4

0

Resistor, Chip, 1/16W, 1%

0603

Std

Std

1

R5

10.2k

Resistor, Chip, 1/16W, 1%

0603

Std

Std

1

R6

3.24k

Resistor, Chip, 1/16W, 1%

0603

Std

Std

0

R7

Open

Resistor, Chip, 1/16W, 1%

0603

Std

Std

3

TP1, TP3, 
TP5

5000

Test Point, Red, Thru Hole Color Keyed

0.100 × 0.100 
inch

5000

Keystone

3

TP2, TP4, 
TP6

5001

Test Point, Black, Thru Hole Color Keyed

0.100 × 0.100 
inch

5001

Keystone

1

U1

TPS5423
3D

IC, DC-DC Converter, 28V, 2A

SO-8

TPS54233D

TI

1

PCB

2.0" x 2.0" x 
0.062"

HPA373

Any

1

Shunt, 100-mil, Black

0.100

929950-00

3M

Note

1. These assemblies are ESD sensitive, ESD precautions shall be observed
2. These assemblies must be clean and free from flux and all contaminants. Use of unclean flux is 

not acceptable.

3. These assemblies must comply with workmanship standards IPC-A-610 Class 2.
4. Ref designators marked with an asterisk ('**') cannot be substituted. All other components can be 

substituted with equivalent MFG's components.

5 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision * (November 2008) to Revision A (October 2021)

Page

• Updated the numbering format for tables, figures, and cross-references throughout the document. ................

2

• Updated the user's guide title.............................................................................................................................

2

www.ti.com

Schematic and Bill of Materials

SLVU264A – NOVEMBER 2008 – REVISED OCTOBER 2021

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TPS54233 Step-Down Converter Evaluation Module User's Guide

13

Copyright © 2021 Texas Instruments Incorporated

Содержание TPS54233

Страница 1: ...onse 6 Figure 2 6 TPS54233EVM 373 Loop Response 7 Figure 2 7 TPS54233EVM 373 Output Ripple 7 Figure 2 8 TPS54233EVM 373 Input Ripple 8 Figure 2 9 TPS54233EVM 373 Start Up Relative to VIN 8 Figure 2 10...

Страница 2: ...is 30 V for the TPS54233EVM 373 Table 1 1 Input Voltage and Output Current Summary EVM INPUT VOLTAGE RANGE OUTPUT CURRENT RANGE TPS54233EVM 373 VIN 8 V to 18 V 0 A to 2 A 1 2 Performance Specification...

Страница 3: ...ection describes how to properly connect set up and use the TPS54233EVM 373 evaluation module The section also includes test results typical for the evaluation module and covers efficiency output volt...

Страница 4: ...f this EVM peaks at a load current of about 0 5 A 1 A and then decreases as the load current increases towards full load Figure 2 1 shows the efficiency for the TPS54233EVM 373 at an ambient temperatu...

Страница 5: ...Load Regulation The load regulation for the TPS54233EVM 373 is shown in Figure 2 3 0 04 0 03 0 02 0 01 0 0 01 0 02 0 03 0 04 0 05 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 V 15 V IN V 18 V IN V 8 V IN Ou...

Страница 6: ...ransients The TPS54233EVM 373 response to load transients is shown in Figure 2 5 The current step is from 25 to 75 of maximum rated load Total peak to peak voltage variation is as shown including ripp...

Страница 7: ...op Response 2 7 Output Voltage Ripple The TPS54233EVM 373 output voltage ripple is shown in Figure 2 7 The output current is the rated full load of 2 A Voltage is measured directly across the output c...

Страница 8: ...ly applied and the output is inhibited by using a jumper at J2 to tie EN to GND When the jumper is removed EN is released When the EN voltage reaches the enable threshold voltage of 1 25 V the start u...

Страница 9: ...VOUT PH Figure 2 11 TPS54233EVM 373 Eco Mode Operation www ti com Test Setup and Results SLVU264A NOVEMBER 2008 REVISED OCTOBER 2021 Submit Document Feedback TPS54233 Step Down Converter Evaluation Mo...

Страница 10: ...d around the board including ten vias directly under the TPS54233 device to provide a thermal path from the top side ground plane to the bottom side ground plane The input decoupling capacitors C1 C2...

Страница 11: ...circuit board area for the components used in the design of this circuit is 0 72 in2 This area does not include test points or connectors www ti com Board Layout SLVU264A NOVEMBER 2008 REVISED OCTOBER...

Страница 12: ...matic Figure 4 1 is the schematic for the TPS54233EVM 373 Figure 4 1 TPS54233EVM 373 Schematic Schematic and Bill of Materials www ti com 12 TPS54233 Step Down Converter Evaluation Module User s Guide...

Страница 13: ...0603 Std Std 0 R7 Open Resistor Chip 1 16W 1 0603 Std Std 3 TP1 TP3 TP5 5000 Test Point Red Thru Hole Color Keyed 0 100 0 100 inch 5000 Keystone 3 TP2 TP4 TP6 5001 Test Point Black Thru Hole Color Key...

Страница 14: ...ther than TI b the nonconformity resulted from User s design specifications or instructions for such EVMs or improper system design or c User has not paid on time Testing and other quality control tec...

Страница 15: ...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 in...

Страница 16: ...instructions set forth by Radio Law of Japan which includes but is not limited to the instructions below with respect to EVMs which for the avoidance of doubt are stated strictly for convenience and s...

Страница 17: ...any interfaces electronic and or mechanical between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electr...

Страница 18: ...R DAMAGES ARE CLAIMED THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT 9 Return Policy Except as otherwise provided TI does not offer any refunds returns or exchanges Furthe...

Страница 19: ...change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reproduction and display of thes...

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