Texas Instruments TPS552892EVM-111 Manuale utente

User’s Guide

TPS552892EVM-111 EVM User's Guide

ABSTRACT

This user's guide describes the characteristics, operation, and the use of the TPS552892EVM-111 evaluation

module (EVM). The EVM contains the TPS552892 device, which is a high-performance, high-efficiency

synchronous buck-boost converter which integrates four MOSFETs. The user's guide includes EVM

specifications, recommended test setup, test result, schematic diagram, bill of materials, and the board layout.

Table of Contents

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

1.1 Performance Specification................................................................................................................................................. 2

1.2 Modification........................................................................................................................................................................ 2

2 Connector, Test Point and Jumper Descriptions.................................................................................................................2

2.1 Connector and Test Point Descriptions.............................................................................................................................. 2

2.2 Jumper Configuration.........................................................................................................................................................2

3 Test Procedure........................................................................................................................................................................3

4 Schematic, Bill of Materials, and Board Layout...................................................................................................................4

4.1 Schematic.......................................................................................................................................................................... 4

4.2 Bill of Materials...................................................................................................................................................................5

4.3 Board Layout......................................................................................................................................................................7

List of Figures

Figure 4-1. TPS552892EVM-111 Schematic............................................................................................................................... 4

Figure 4-2. TPS552892EVM-111 Top-Side Layout...................................................................................................................... 7

Figure 4-3. TPS552892EVM-111 Inner Layer1............................................................................................................................8

Figure 4-4. TPS552892EVM-111 Inner Layer2............................................................................................................................8

Figure 4-5. TPS552892EVM-111 Bottom-Side Layout................................................................................................................ 9

List of Tables

Table 1-1. Performance Specification Summary..........................................................................................................................2

Table 2-1. Connectors and Test Points........................................................................................................................................ 2

Table 4-1. Bill of Materials............................................................................................................................................................5

Trademarks

All trademarks are the property of their respective owners.

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TPS552892EVM-111 EVM User's Guide 1

1 Introduction

1.1 Performance Specification

Table 1-1 provides a summary of the TPS552892 EVM performance specifications. All specifications are given

for an ambient temperature of 25°C.

Table 1-1. Performance Specification Summary

Parameter Test Condition Value Unit

Input Voltage N/A 3 - 36 V

Output Voltage N/A 12 V

Maximum Output Current

VIN ≥ 6 V 3

AVIN ≥ 9V 4

VIN ≥ 12V 5

Default Switching Frequency N/A 400 KHz

1.2 Modification

The printed-circuit board (PCB) for this EVM is designed to accommodate some modifications by the user. The

external component can be changed according to the real application.

2 Connector, Test Point and Jumper Descriptions

This section describes how to properly connect, set up, and use the TPS552882EVM-400kHz.

2.1 Connector and Test Point Descriptions

This EVM includes I/O connectors and test points as shown in Table 2-1. The power supply must be connected

to input connectors, J1 and J2. The load must be connected to output connectors, J3 and J4.

Table 2-1. Connectors and Test Points

Reference

Designator

Description

J1 Input voltage positive connection

J2 Input voltage return connection

J3 Output voltage connection

J4 Output voltage return connection

2.2 Jumper Configuration

2.2.1 JP1 (ENABLE)

The JP1 jumper enables the device. By default, this jumper is set to the ON position. Put this jumper in the OFF

position to disable the output.

2.2.2 JP5(SYNC)

The JP5 jumper is for the frequency dithering selection. Placing a jumper across JP5 disables the frequency

dithering function. Left JP5 opens when using frequency dithering function.

2.2.3 JP6 (MODE)

MODE pin input jumper. Place a jumper across MODE and VCC to set in forced PWM mode, place a jumper

across MODE and GND to set in auto PFM mode.

2.2.4 JP7 (EXTVCC)

EXTVCC pin input jumper. Place a jumper across EXTVCC and VCC to select internal LDO. To minimize the

power dissipation of the internal LDO when both input voltage and output voltage are high, an external 5-V

power source can be applied at the VCC pin (JP4) to supply the TPS55289 and place a jumper across EXTVCC

and GND .

Introduction www.ti.com

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3 Test Procedure

Use the following steps for the test procedure:

1. Set the power supply current limit to 10 A. Set the power supply to something around 12 V. Turn off the

power supply. Connect the positive output of the power supply to J1 and the negative output to J2.

2. Connect the load to J3 for the positive connection and J4 for the negative connection.

3. Turn on the power supply.

4. Slowly increase the load while monitoring the output voltage between J3 and J4. It must remain in regulation

when the load current is lower than 4 A.

5. Slowly sweep the input voltage from 9 V to 20 V. The output voltage must remain in regulation when the load

current is lower than the maximum load current specified in Table 2-1.

6. Turn off the load, turn off the power supply. Then turn on the load to discharge the output capacitors.

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TPS552892EVM-111 EVM User's Guide 3

4 Schematic, Bill of Materials, and Board Layout

This section provides the TPS552892EVM-111 schematic, bill of materials (BOM), and board layout.

4.1 Schematic

Figure 4-1 shows the EVM schematic.

4.7uH

68uF C6

1µF

10µF

10µF 0.1uF

0.1µF

C11

0.1µF

C10

4.7µF

4700pF

C25

100pF

C24

49.9k

R10C23

0.01uF

C18

10µF

0.1uF

C14 C16

10µF

C17

10µF

10m

TP1

TP2

3 - 36V

C20

1µF

TP3

TP4

0.8-20V

TP5 TP6

2.20

GND

VOUT

0.1uF

C22

JP1

115k

VIN

VCC

AGND

SYNC

JP5

AGND

SYNC

AGND

11.3k

R15

102k

R12

49.9

TP7

AGND

High

Low

JP4

GND

GND GND

GND

0.1uF

C13 C15

1µF

147k

GND

AGND

VCC

JP7

AGND

EXTVCC

VCC

JP6

AGND

MODE

VCC

0.1uF

C12

AGND

0.1uF

C26

AGND

10.0

MODE

SYNC

0.1uF

C21

VCC

EXTVCC

AGND

MODE

VCC

AGND

VCC_EXT

GND

21 EXTVCC

18 VCC

7VIN

SW1

SW2 10

BOOT1

BOOT2

CDC

COMP

5DITH/SYNC

1EN/UVLO

FB 14

6FSW

ISN

ISP

2MODE

VOUT

AGND 9

PGND

TPS552892RYQR

150k

R11

CDC

VCC

EXTVCC

BOOT1

SW1

SW2

BOOT2

ISP

COMP

ISN

FSW

102k

R13

102k

R14

VCC

JP2

JP3

AGND

100uF

C19

2.2nF 2.2nF

15.0k

C27

0.01uF

C28

0.01uF

Figure 4-1. TPS552892EVM-111 Schematic

Schematic, Bill of Materials, and Board Layout www.ti.com

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4.2 Bill of Materials

Table 4-1 lists the EVM bill of materials.

Table 4-1. Bill of Materials

Designator Quant

ity

Value Description PackageRefere

nce

PartNumber Manufacturer

C3 1 68uF CAP, Polymer Hybrid, 68 uF, 50 V, +/- 20%, 30 ohm, 8x10 SMD 8x10 EEHZA1H680P Panasonic

C4, C5, C16,

C17, C18

5 10uF CAP, CERM, 10 µF, 50 V,+/- 10%, X7R, AEC-Q200 Grade 1, 1206 1206 CGA5L1X7R1H106K160AC TDK

C6, C15, C20 3 1uF CAP, CERM, 1 µF, 50 V,+/- 20%, X5R, AEC-Q200 Grade 3, 0603 0603 GRT188R61H105ME13D MuRata

C7, C8, C13,

C14

4 0.1uF CAP, CERM, 0.1 uF, 50 V, +/- 20%, X7R, 0402 0402 GRM155R71H104ME14D MuRata

C9, C11 2 0.1µF ±10% 50V Ceramic Capacitor X8L 0603 (1608 Metric) 0603 GCM188L81H104KA57D Murata Electronics

North America

C10 1 4.7uF CAP, CERM, 4.7 µF, 16 V,+/- 10%, X5R, AEC-Q200 Grade 3, 0603 0603 GRT188R61C475KE13D MuRata

C12, C21, C22,

C26

4 0.1uF CAP, CERM, 0.1 uF, 50 V, +/- 10%, X7R, AEC-Q200 Grade 1, 0402 0402 CGA2B3X7R1H104K050BB TDK

C19 1 100uF CAP, AL, 100 uF, 35 V, AEC-Q200 Grade 2, SMD D6.3xL5.8mm EEHZK1V101XP Panasonic

C23, C27, C28 3 0.01uF CAP, CERM, 0.01 uF, 50 V, +/- 10%, X7R, AEC-Q200 Grade 1, 0402 0402 CGA2B3X7R1H103K050BB TDK

C24 1 100pF CAP, CERM, 100 pF, 50 V, +/- 5%, C0G/NP0, AEC-Q200 Grade 1, 0402 0402 CGA2B2C0G1H101J050BA TDK

C25 1 4700pF CAP, CERM, 4700 pF, 50 V, +/- 10%, X7R, AEC-Q200 Grade 1, 0402 0402 CGA2B2X7R1H472K050BA TDK

FID4, FID5,

FID6

3 Fiducial mark. There is nothing to buy or mount. N/A N/A N/A

J1, J2, J3, J4 4 Terminal, Turret, TH, Double Keystone1502-

1502-2 Keystone

JP1, JP6, JP7 3 Header, 2.54 mm, 3x1, Gold, TH Header,

2.54mm, 3x1,

61300311121 Wurth Elektronik

JP2, JP3, JP4,

JP5

4 Header, 2.54 mm, 2x1, Gold, TH Header,

2.54mm, 2x1,

61300211121 Wurth Elektronik

L1 1 4.7uH Inductor, Shielded, Composite, 4.7 uH, 13.6 A, 0.01 ohm, SMD 7.2x7x7.5mm XAL7070-472MEB Coilcraft

R3 1 147k RES, 147 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402 CRCW0402147KFKED Vishay-Dale

R4 1 10 mOhms ±1% 1W Chip Resistor 1206 (3216 Metric) Automotive AEC-Q200,

Current Sense, Moisture Resistant Metal Element

1206 CRF1206-FZ-R010ELF Bourns

R5 1 115k RES, 115 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402 CRCW0402115KFKED Vishay-Dale

R6 1 49.9 RES, 49.9, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402 CRCW040249R9FKED Vishay-Dale

R7, R9 2 10 RES, 10.0, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402 CRCW040210R0FKED Vishay-Dale

R8 1 15.0k RES, 15.0 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402 CRCW040215K0FKED Vishay-Dale

R10 1 49.9k RES, 49.9 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402 CRCW040249K9FKED Vishay-Dale

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TPS552892EVM-111 EVM User's Guide 5

Table 4-1. Bill of Materials (continued)

Designator Quant

ity

Value Description PackageRefere

nce

PartNumber Manufacturer

R11 1 150k RES, 150 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402 CRCW0402150KFKED Vishay-Dale

R12, R13, R14 3 102k RES, 102 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402 CRCW0402102KFKED Vishay-Dale

R15 1 11.3k RES, 11.3 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402 CRCW040211K3FKED Vishay-Dale

SH-JP1, SH-

JP2, SH-JP3,

SH-JP4

4 Shunt, 100mil, Gold plated, Black Shunt 2 pos.

100 mil

881545-2 TE Connectivity

TP1, TP2, TP3,

TP4, TP5, TP6,

TP7

7 Test Point, Miniature, Orange, TH Orange

Miniature

Testpoint

5003 Keystone

Electronics

U1 1 36-V, 8-A Buck-boost Converter VQFN21 +125C VQFN21 TPS552892RYQR Texas Instruments

C1, C2 0 2200pF CAP, CERM, 2200 pF, 250 V, +/- 10%, X7R, 0805 0805 GRM21AR72E222KW01D MuRata

FID1, FID2,

FID3

0 Fiducial mark. There is nothing to buy or mount. N/A N/A N/A

R1, R2 0 2.2 RES, 2.20, 1%, 0.25 W, AEC-Q200 Grade 0, 1206 1206 ERJ-8RQF2R2V Panasonic

Schematic, Bill of Materials, and Board Layout www.ti.com

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4.3 Board Layout

Figure 4-2 through Figure 4-5 illustrate the EVM board layouts.

Figure 4-2. TPS552892EVM-111 Top-Side Layout

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TPS552892EVM-111 EVM User's Guide 7

Figure 4-3. TPS552892EVM-111 Inner Layer1

Figure 4-4. TPS552892EVM-111 Inner Layer2

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Figure 4-5. TPS552892EVM-111 Bottom-Side Layout

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TPS552892EVM-111 EVM User's Guide 9

STANDARD TERMS FOR EVALUATION MODULES

1. Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or

documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance

with the terms set forth herein. User's acceptance of the EVM is expressly subject to the following terms.

1.1 EVMs are intended solely for product or software developers for use in a research and development setting to facilitate feasibility

evaluation, experimentation, or scientific analysis of TI semiconductors products. EVMs have no direct function and are not

finished products. EVMs shall not be directly or indirectly assembled as a part or subassembly in any finished product. For

clarification, any software or software tools provided with the EVM (“Software”) shall not be subject to the terms and conditions

set forth herein but rather shall be subject to the applicable terms that accompany such Software

1.2 EVMs are not intended for consumer or household use. EVMs may not be sold, sublicensed, leased, rented, loaned, assigned,

or otherwise distributed for commercial purposes by Users, in whole or in part, or used in any finished product or production

system.

2Limited Warranty and Related Remedies/Disclaimers:

2.1 These terms do not apply to Software. The warranty, if any, for Software is covered in the applicable Software License

Agreement.

2.2 TI warrants that the TI EVM will conform to TI's published specifications for ninety (90) days after the date TI delivers such EVM

to User. Notwithstanding the foregoing, TI shall not be liable for a nonconforming EVM if (a) the nonconformity was caused by

neglect, misuse or mistreatment by an entity other than TI, including improper installation or testing, or for any EVMs that have

been altered or modified in any way by an entity other 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

techniques are used to the extent TI deems necessary. TI does not test all parameters of each EVM.

User's claims against TI under this Section 2 are void if User fails to notify TI of any apparent defects in the EVMs within ten (10)

business days after delivery, or of any hidden defects with ten (10) business days after the defect has been detected.

2.3 TI's sole liability shall be at its option to repair or replace EVMs that fail to conform to the warranty set forth above, or credit

User's account for such EVM. TI's liability under this warranty shall be limited to EVMs that are returned during the warranty

period to the address designated by TI and that are determined by TI not to conform to such warranty. If TI elects to repair or

replace such EVM, TI shall have a reasonable time to repair such EVM or provide replacements. Repaired EVMs shall be

warranted for the remainder of the original warranty period. Replaced EVMs shall be warranted for a new full ninety (90) day

warranty period.

WARNING

Evaluation Kits are intended solely for use by technically qualified,

professional electronics experts who are familiar with the dangers

and application risks associated with handling electrical mechanical

components, systems, and subsystems.

User shall operate the Evaluation Kit within TI’s recommended

guidelines and any applicable legal or environmental requirements

as well as reasonable and customary safeguards. Failure to set up

and/or operate the Evaluation Kit within TI’s recommended

guidelines may result in personal injury or death or property

damage. Proper set up entails following TI’s instructions for

electrical ratings of interface circuits such as input, output and

electrical loads.

NOTE:

EXPOSURE TO ELECTROSTATIC DISCHARGE (ESD) MAY CAUSE DEGREDATION OR FAILURE OF THE EVALUATION

KIT; TI RECOMMENDS STORAGE OF THE EVALUATION KIT IN A PROTECTIVE ESD BAG.

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