Texas Instruments TPIC74101EVM Manual de usuario

User’s Guide

TPIC74101EVM User's Guide

Table of Contents

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

2 Setup........................................................................................................................................................................................3

2.1 Input/Output Connector Description...................................................................................................................................3

2.2 Setup..................................................................................................................................................................................4

2.3 Operation........................................................................................................................................................................... 4

3 Board Layout...........................................................................................................................................................................6

4 Schematic................................................................................................................................................................................8

5 Revision History......................................................................................................................................................................9

List of Figures

Figure 2-1. Slew Rate Jumper Settings....................................................................................................................................... 3

Figure 2-2. Low Power Mode Jumper Settings............................................................................................................................4

Figure 2-3. Enable Jumper Settings............................................................................................................................................ 4

Figure 2-4. 5Vg Regulated Output Jumper Settings....................................................................................................................4

Figure 2-5. Low Pass Filter Inductor Bypass Jumper Settings.................................................................................................... 4

Figure 3-1. Top Assembly Layer.................................................................................................................................................. 6

Figure 3-2. Bottom Assembly Layer (viewed from bottom)..........................................................................................................6

Figure 3-3. Top Layer Routing..................................................................................................................................................... 7

Figure 3-4. Bottom Layer Routing (viewed from bottom).............................................................................................................7

Figure 4-1. TPIC74101EVM Schematic.......................................................................................................................................8

List of Tables

Table 1-1. Device and Package Configurations...........................................................................................................................2

Table 4-1. TPIC74101EVM Bill of Materials.................................................................................................................................9

Trademarks

PowerPAD™ is a trademark of Texas Instruments.

All trademarks are the property of their respective owners.

www.ti.com Table of Contents

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TPIC74101EVM User's Guide 1

1 Introduction

The Texas Instruments TPIC74101EVM evaluation module (EVM) helps designers evaluate the operation and

performance of the TPIC74101 Switch Mode Power Supply – Buck Regulator. The EVM contains one DC / DC

converter (See Table 1-1).

Table 1-1. Device and Package Configurations

CONVERTER IC PACKAGE

U1 TPIC74101QPWPRQ1 PWP-20

Introduction www.ti.com

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2 Setup

This section describes the jumpers and connectors on the EVM as well and how to properly connect, set up, and

use the TPIC74101EVM.

2.1 Input/Output Connector Description

J1 – VBAT is the power input terminal for the converter. The terminal provides power (Vbat).

J2 – GND is the ground terminal for the EVM.

J3 – 5Vg is the power output terminal for the 5Vg regulator output.

J4 – VOUT is the regulated output voltage for the converter.

J5 – GND is a ground terminal for the EVM.

JP1, JP2 – SCR1, SCR0 are jumpers used to set the slew rate of the switching transistor for the L1 terminal

switch pin. Jumpers allow the slew rate to be set to four set points.

SCR1

slow

SCR0

SCR1

medium -slow

SCR0

SCR1

medium-fast

SCR0

SCR1

fast

SCR0

Figure 2-1. Slew Rate Jumper Settings

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TPIC74101EVM User's Guide 3

JP3 – LPM is the jumper used to enable Low Power Mode (LPM). The jumper allows LPM to be enabled or

disabled. The device will operate in Normal mode when LPM is disabled.

LPM

disabled

LPM

enabled

Figure 2-2. Low Power Mode Jumper Settings

JP4 – Enable is the jumper used to enable the converter. The converter is enabled when the Enable is high and

disabled when low. The jumper placement allows the converter to be enabled or disabled.

disabled

enabled

Figure 2-3. Enable Jumper Settings

JP5 – 5VgEN is the jumper used to enable switched 5 V regulated output. The output is enabled when the

Enable is high and disabled when low. The jumper placement allows the converter to be enabled or disabled.

5Vg

disabled

5Vg

enabled

Figure 2-4. 5Vg Regulated Output Jumper Settings

JP6 – Bypass is the jumper used to bypass the low pass filter inductor on the power supply input to the device.

This allows the user to remove the filter from the circuit. The jumper placement allows the inductor to be active or

shorted.

BYPASS

active

BYPASS

shorted

Figure 2-5. Low Pass Filter Inductor Bypass Jumper Settings

2.2 Setup

The input voltage range for the converter is 1.5 V to 40 V. The input voltage must be at least 5 V during start up.

2.3 Operation

For proper operation of the TPIC74101, JP1, JP2, JP3, JP4, JP5, and JP6 should be properly configured. The

recommended setting, using shorting blocks:

JP1 and JP2 to Fast

JP3 to Enabled

Setup www.ti.com

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JP4 to Enabled

JP5 to Enabled, if 5Vg is used

JP6 to Shorted

In this configuration, the device powers up when power is applied.

JP1, JP2 SCR0, SCR1 select how switch pin slew rate is set: slow, medium-slow, medium-fast, or fast. JP3 LPM

selects how Low Power Mode is set: Enabled or Disabled. JP4 EN turns the device on or off. JP5 5Vg turns the

regulated 5-V output on or off. JP6 Bypass disables the low-pass filter located on the input supply to the device.

www.ti.com Setup

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TPIC74101EVM User's Guide 5

3 Board Layout

Figure 3-1, Figure 3-2, Figure 3-3, and Figure 3-4 show the board layout for the TPIC74101EVM PWB. The

EVM offers resistors, capacitors, and jumpers to program the switch pin slew rate and regulator turn-on Delay.

Jumpers are also provided to enable the device and to enable the low-power mode option.

The TPIC74101 offers high efficiency but does dissipate power. The PowerPAD™ package offers an exposed

thermal pad to enhance thermal performance. This must be soldered to the copper landing on the PCB for

optimal performance. The PCB provides 1-oz copper planes on the top and bottom to dissipate heat.

Figure 3-1. Top Assembly Layer

Figure 3-2. Bottom Assembly Layer (viewed from bottom)

Board Layout www.ti.com

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Figure 3-3. Top Layer Routing

Figure 3-4. Bottom Layer Routing (viewed from bottom)

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TPIC74101EVM User's Guide 7

4 Schematic

Figure 4-1. TPIC74101EVM Schematic

Schematic www.ti.com

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Table 4-1. TPIC74101EVM Bill of Materials

COUNT REF

DES DESCRIPTION SIZE MFR PART NO.

2 C1, C2 Capacitor, ceramic, 4.7 nF, 50

V, 10% 0603 muRata GRM188R71H472KA01B

1 C3 Capacitor, ceramic, 470 nF, 16

V, 10% 0603 muRata GRM188R71C474KA88B

2 C4, C7 Capacitor, ceramic, 100 nF, 16

V, 10% 0603 muRata GRM188R71C104KA01J

1 C5 Capacitor, ceramic, 100 nF, 50

V, 10% 1206 muRata GCM319R71H104KA37B

1 C6 Capacitor, electrolytic, 470 uF,

50 V, 20% 10mm Panasonic EEU-FC1H471L

1 C8 Capacitor, tantalum, 47 uF, 16

V, 10% 2917 Kyocera AVX TPSD476K016T0100V

1 C9 Capacitor, ceramic, 1 uF, 16 V,

10% 0603 muRata GRM188R71C105KA12B

1 C10 Capacitor, ceramic, 10 nF, 16

V, 10% 0603 muRata GRM188R71C103KA01B

2 D1, D2 Diode, Schottky, 3 A, 100 V SMC IR 30BQ100

5 J1, J2, J3, J4, J5 Test point, 42-mil 0.042 Std Std

5JP1, JP2, JP3, JP4,

JP5

Header, 3-pin, 100-mil

spacing, (36-pin strip) 0.100 x 3 Sullins PTC36CAAN

1 JP6 Header, 2-pin, 100-mil

spacing, (36-pin strip) 0.100 x 2 Sullins PTC36CAAN

2 L1, L2 Inductor, SMT, 33 uH, 4.3 A,

54.9 mΩ 12.3mm x 12.3mm Coilcraft MSS1260T-333

1 R1 Resistor, chip, 12.1-kΩ,

1/16W, 1% 0603 Std Std

1 R2 Resistor, chip, 68.1-kΩ,

1/16W, 1% 0603 Std Std

2 R3, R4 Resistor, chip, 20-kΩ, 1/16W,

1% 0603 Std Std

1 R5 Resistor, chip, 33.2-kΩ,

1/16W, 1% 0603 Std Std

1 U1 IC, TPIC74101QPWPRQ1 TI TPIC74101QPWP

5 Revision History

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

Changes from Revision * (December 2011) to Revision A (October 2022) Page

• Updated the numbering format for tables, figures, and cross-references throughout the document..................2

• Updated layout figures to match physical board Rev. E..................................................................................... 6

• Updated BoM to match components of board Rev. E.........................................................................................8

www.ti.com Revision History

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TPIC74101EVM 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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